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PERLDIAG(1)	       Perl Programmers Reference Guide		   PERLDIAG(1)

NAME
       perldiag - various Perl diagnostics

DESCRIPTION
       These messages are classified as follows (listed in increasing order of
       desperation):

	   (W) A warning (optional).
	   (D) A deprecation (enabled by default).
	   (S) A severe warning (enabled by default).
	   (F) A fatal error (trappable).
	   (P) An internal error you should never see (trappable).
	   (X) A very fatal error (nontrappable).
	   (A) An alien error message (not generated by Perl).

       The majority of messages from the first three classifications above (W,
       D & S) can be controlled using the "warnings" pragma.

       If a message can be controlled by the "warnings" pragma, its warning
       category is included with the classification letter in the description
       below.

       Optional warnings are enabled by using the "warnings" pragma or the -w
       and -W switches. Warnings may be captured by setting $SIG{__WARN__} to
       a reference to a routine that will be called on each warning instead of
       printing it.  See perlvar.

       Severe warnings are always enabled, unless they are explicitly disabled
       with the "warnings" pragma or the -X switch.

       Trappable errors may be trapped using the eval operator.	 See "eval" in
       perlfunc.  In almost all cases, warnings may be selectively disabled or
       promoted to fatal errors using the "warnings" pragma.  See warnings.

       The messages are in alphabetical order, without regard to upper or
       lower-case.  Some of these messages are generic.	 Spots that vary are
       denoted with a %s or other printf-style escape.	These escapes are
       ignored by the alphabetical order, as are all characters other than
       letters.	 To look up your message, just ignore anything that is not a
       letter.

       accept() on closed socket %s
	   (W closed) You tried to do an accept on a closed socket.  Did you
	   forget to check the return value of your socket() call?  See
	   "accept" in perlfunc.

       Allocation too large: %lx
	   (X) You can't allocate more than 64K on an MS-DOS machine.

       '%c' allowed only after types %s
	   (F) The modifiers '!', '<' and '>' are allowed in pack() or
	   unpack() only after certain types.  See "pack" in perlfunc.

       Ambiguous call resolved as CORE::%s(), qualify as such or use &
	   (W ambiguous) A subroutine you have declared has the same name as a
	   Perl keyword, and you have used the name without qualification for
	   calling one or the other.  Perl decided to call the builtin because
	   the subroutine is not imported.

	   To force interpretation as a subroutine call, either put an
	   ampersand before the subroutine name, or qualify the name with its
	   package.  Alternatively, you can import the subroutine (or pretend
	   that it's imported with the "use subs" pragma).

	   To silently interpret it as the Perl operator, use the "CORE::"
	   prefix on the operator (e.g. "CORE::log($x)") or declare the
	   subroutine to be an object method (see "Subroutine Attributes" in
	   perlsub or attributes).

       Ambiguous range in transliteration operator
	   (F) You wrote something like "tr/a-z-0//" which doesn't mean
	   anything at all.  To include a "-" character in a transliteration,
	   put it either first or last.	 (In the past, "tr/a-z-0//" was
	   synonymous with "tr/a-y//", which was probably not what you would
	   have expected.)

       Ambiguous use of %s resolved as %s
	   (W ambiguous)(S) You said something that may not be interpreted the
	   way you thought.  Normally it's pretty easy to disambiguate it by
	   supplying a missing quote, operator, parenthesis pair or
	   declaration.

       '|' and '<' may not both be specified on command line
	   (F) An error peculiar to VMS.  Perl does its own command line
	   redirection, and found that STDIN was a pipe, and that you also
	   tried to redirect STDIN using '<'.  Only one STDIN stream to a
	   customer, please.

       '|' and '>' may not both be specified on command line
	   (F) An error peculiar to VMS.  Perl does its own command line
	   redirection, and thinks you tried to redirect stdout both to a file
	   and into a pipe to another command.	You need to choose one or the
	   other, though nothing's stopping you from piping into a program or
	   Perl script which 'splits' output into two streams, such as

	       open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!";
	       while (<STDIN>) {
		   print;
		   print OUT;
	       }
	       close OUT;

       Applying %s to %s will act on scalar(%s)
	   (W misc) The pattern match ("//"), substitution ("s///"), and
	   transliteration ("tr///") operators work on scalar values.  If you
	   apply one of them to an array or a hash, it will convert the array
	   or hash to a scalar value (the length of an array, or the
	   population info of a hash) and then work on that scalar value.
	   This is probably not what you meant to do.  See "grep" in perlfunc
	   and "map" in perlfunc for alternatives.

       Args must match #! line
	   (F) The setuid emulator requires that the arguments Perl was
	   invoked with match the arguments specified on the #! line.  Since
	   some systems impose a one-argument limit on the #! line, try
	   combining switches; for example, turn "-w -U" into "-wU".

       Arg too short for msgsnd
	   (F) msgsnd() requires a string at least as long as sizeof(long).

       %s argument is not a HASH or ARRAY element or a subroutine
	   (F) The argument to exists() must be a hash or array element or a
	   subroutine with an ampersand, such as:

	       $foo{$bar}
	       $ref->{"susie"}[12]
	       &do_something

       %s argument is not a HASH or ARRAY element or slice
	   (F) The argument to delete() must be either a hash or array
	   element, such as:

	       $foo{$bar}
	       $ref->{"susie"}[12]

	   or a hash or array slice, such as:

	       @foo[$bar, $baz, $xyzzy]
	       @{$ref->[12]}{"susie", "queue"}

       %s argument is not a subroutine name
	   (F) The argument to exists() for "exists &sub" must be a subroutine
	   name, and not a subroutine call.  "exists &sub()" will generate
	   this error.

       Argument "%s" isn't numeric%s
	   (W numeric) The indicated string was fed as an argument to an
	   operator that expected a numeric value instead.  If you're
	   fortunate the message will identify which operator was so
	   unfortunate.

       Argument list not closed for PerlIO layer "%s"
	   (W layer) When pushing a layer with arguments onto the Perl I/O
	   system you forgot the ) that closes the argument list.  (Layers
	   take care of transforming data between external and internal
	   representations.)  Perl stopped parsing the layer list at this
	   point and did not attempt to push this layer.  If your program
	   didn't explicitly request the failing operation, it may be the
	   result of the value of the environment variable PERLIO.

       Array @%s missing the @ in argument %d of %s()
	   (D deprecated) Really old Perl let you omit the @ on array names in
	   some spots.	This is now heavily deprecated.

       assertion botched: %s
	   (P) The malloc package that comes with Perl had an internal
	   failure.

       Assertion failed: file "%s"
	   (P) A general assertion failed.  The file in question must be
	   examined.

       Assignment to both a list and a scalar
	   (F) If you assign to a conditional operator, the 2nd and 3rd
	   arguments must either both be scalars or both be lists.  Otherwise
	   Perl won't know which context to supply to the right side.

       A thread exited while %d threads were running
	   (W threads)(S) When using threaded Perl, a thread (not necessarily
	   the main thread) exited while there were still other threads
	   running.  Usually it's a good idea to first collect the return
	   values of the created threads by joining them, and only then exit
	   from the main thread.  See threads.

       Attempt to access disallowed key '%s' in a restricted hash
	   (F) The failing code has attempted to get or set a key which is not
	   in the current set of allowed keys of a restricted hash.

       Attempt to bless into a reference
	   (F) The CLASSNAME argument to the bless() operator is expected to
	   be the name of the package to bless the resulting object into.
	   You've supplied instead a reference to something: perhaps you wrote

	       bless $self, $proto;

	   when you intended

	       bless $self, ref($proto) || $proto;

	   If you actually want to bless into the stringified version of the
	   reference supplied, you need to stringify it yourself, for example
	   by:

	       bless $self, "$proto";

       Attempt to delete disallowed key '%s' from a restricted hash
	   (F) The failing code attempted to delete from a restricted hash a
	   key which is not in its key set.

       Attempt to delete readonly key '%s' from a restricted hash
	   (F) The failing code attempted to delete a key whose value has been
	   declared readonly from a restricted hash.

       Attempt to free non-arena SV: 0x%lx
	   (P internal) All SV objects are supposed to be allocated from
	   arenas that will be garbage collected on exit.  An SV was
	   discovered to be outside any of those arenas.

       Attempt to free nonexistent shared string
	   (P internal) Perl maintains a reference counted internal table of
	   strings to optimize the storage and access of hash keys and other
	   strings.  This indicates someone tried to decrement the reference
	   count of a string that can no longer be found in the table.

       Attempt to free temp prematurely
	   (W debugging) Mortalized values are supposed to be freed by the
	   free_tmps() routine.	 This indicates that something else is freeing
	   the SV before the free_tmps() routine gets a chance, which means
	   that the free_tmps() routine will be freeing an unreferenced scalar
	   when it does try to free it.

       Attempt to free unreferenced glob pointers
	   (P internal) The reference counts got screwed up on symbol aliases.

       Attempt to free unreferenced scalar
	   (W internal) Perl went to decrement the reference count of a scalar
	   to see if it would go to 0, and discovered that it had already gone
	   to 0 earlier, and should have been freed, and in fact, probably was
	   freed.  This could indicate that SvREFCNT_dec() was called too many
	   times, or that SvREFCNT_inc() was called too few times, or that the
	   SV was mortalized when it shouldn't have been, or that memory has
	   been corrupted.

       Attempt to join self
	   (F) You tried to join a thread from within itself, which is an
	   impossible task.  You may be joining the wrong thread, or you may
	   need to move the join() to some other thread.

       Attempt to pack pointer to temporary value
	   (W pack) You tried to pass a temporary value (like the result of a
	   function, or a computed expression) to the "p" pack() template.
	   This means the result contains a pointer to a location that could
	   become invalid anytime, even before the end of the current
	   statement.  Use literals or global values as arguments to the "p"
	   pack() template to avoid this warning.

       Attempt to reload %s aborted.
	   (F) You tried to load a file with "use" or "require" that failed to
	   compile once already.  Perl will not try to compile this file again
	   unless you delete its entry from %INC.  See "require" in perlfunc
	   and "%INC" in perlvar.

       Attempt to set length of freed array
	   (W) You tried to set the length of an array which has been freed.
	   You can do this by storing a reference to the scalar representing
	   the last index of an array and later assigning through that
	   reference. For example

	       $r = do {my @a; \$#a};
	       $$r = 503

       Attempt to use reference as lvalue in substr
	   (W substr) You supplied a reference as the first argument to
	   substr() used as an lvalue, which is pretty strange.	 Perhaps you
	   forgot to dereference it first.  See "substr" in perlfunc.

       Attribute "locked" is deprecated
	   (D deprecated) You have used the attributes pragam to modify the
	   "locked" attribute on a code reference. The :locked attribute is
	   obsolete, has had no effect since 5005 threads were removed, and
	   will be removed in the next major release of Perl 5.

       Attribute "unique" is deprecated
	   (D deprecated) You have used the attributes pragam to modify the
	   "unique" attribute on an array, hash or scalar reference. The
	   :unique attribute has had no effect since Perl 5.8.8, and will be
	   removed in the next major release of Perl 5.

       Bad arg length for %s, is %d, should be %d
	   (F) You passed a buffer of the wrong size to one of msgctl(),
	   semctl() or shmctl().  In C parlance, the correct sizes are,
	   respectively, sizeof(struct msqid_ds *), sizeof(struct semid_ds *),
	   and sizeof(struct shmid_ds *).

       Bad evalled substitution pattern
	   (F) You've used the "/e" switch to evaluate the replacement for a
	   substitution, but perl found a syntax error in the code to
	   evaluate, most likely an unexpected right brace '}'.

       Bad filehandle: %s
	   (F) A symbol was passed to something wanting a filehandle, but the
	   symbol has no filehandle associated with it.	 Perhaps you didn't do
	   an open(), or did it in another package.

       Bad free() ignored
	   (S malloc) An internal routine called free() on something that had
	   never been malloc()ed in the first place. Mandatory, but can be
	   disabled by setting environment variable "PERL_BADFREE" to 0.

	   This message can be seen quite often with DB_File on systems with
	   "hard" dynamic linking, like "AIX" and "OS/2". It is a bug of
	   "Berkeley DB" which is left unnoticed if "DB" uses forgiving system
	   malloc().

       Bad hash
	   (P) One of the internal hash routines was passed a null HV pointer.

       Badly placed ()'s
	   (A) You've accidentally run your script through csh instead of
	   Perl.  Check the #! line, or manually feed your script into Perl
	   yourself.

       Bad name after %s::
	   (F) You started to name a symbol by using a package prefix, and
	   then didn't finish the symbol.  In particular, you can't
	   interpolate outside of quotes, so

	       $var = 'myvar';
	       $sym = mypack::$var;

	   is not the same as

	       $var = 'myvar';
	       $sym = "mypack::$var";

       Bad plugin affecting keyword '%s'
	   (F) An extension using the keyword plugin mechanism violated the
	   plugin API.

       Bad realloc() ignored
	   (S malloc) An internal routine called realloc() on something that
	   had never been malloc()ed in the first place. Mandatory, but can be
	   disabled by setting environment variable "PERL_BADFREE" to 1.

       Bad symbol for array
	   (P) An internal request asked to add an array entry to something
	   that wasn't a symbol table entry.

       Bad symbol for dirhandle
	   (P) An internal request asked to add a dirhandle entry to something
	   that wasn't a symbol table entry.

       Bad symbol for filehandle
	   (P) An internal request asked to add a filehandle entry to
	   something that wasn't a symbol table entry.

       Bad symbol for hash
	   (P) An internal request asked to add a hash entry to something that
	   wasn't a symbol table entry.

       Bareword found in conditional
	   (W bareword) The compiler found a bareword where it expected a
	   conditional, which often indicates that an || or && was parsed as
	   part of the last argument of the previous construct, for example:

	       open FOO || die;

	   It may also indicate a misspelled constant that has been
	   interpreted as a bareword:

	       use constant TYPO => 1;
	       if (TYOP) { print "foo" }

	   The "strict" pragma is useful in avoiding such errors.

       Bareword "%s" not allowed while "strict subs" in use
	   (F) With "strict subs" in use, a bareword is only allowed as a
	   subroutine identifier, in curly brackets or to the left of the "=>"
	   symbol.  Perhaps you need to predeclare a subroutine?

       Bareword "%s" refers to nonexistent package
	   (W bareword) You used a qualified bareword of the form "Foo::", but
	   the compiler saw no other uses of that namespace before that point.
	   Perhaps you need to predeclare a package?

       BEGIN failedO-compilation aborted
	   (F) An untrapped exception was raised while executing a BEGIN
	   subroutine.	Compilation stops immediately and the interpreter is
	   exited.

       BEGIN not safe after errorsO-compilation aborted
	   (F) Perl found a "BEGIN {}" subroutine (or a "use" directive, which
	   implies a "BEGIN {}") after one or more compilation errors had
	   already occurred.  Since the intended environment for the "BEGIN
	   {}" could not be guaranteed (due to the errors), and since
	   subsequent code likely depends on its correct operation, Perl just
	   gave up.

       \1 better written as $1
	   (W syntax) Outside of patterns, backreferences live on as
	   variables.  The use of backslashes is grandfathered on the
	   right-hand side of a substitution, but stylistically it's better to
	   use the variable form because other Perl programmers will expect
	   it, and it works better if there are more than 9 backreferences.

       Binary number > 0b11111111111111111111111111111111 non-portable
	   (W portable) The binary number you specified is larger than 2**32-1
	   (4294967295) and therefore non-portable between systems.  See
	   perlport for more on portability concerns.

       bind() on closed socket %s
	   (W closed) You tried to do a bind on a closed socket.  Did you
	   forget to check the return value of your socket() call?  See "bind"
	   in perlfunc.

       binmode() on closed filehandle %s
	   (W unopened) You tried binmode() on a filehandle that was never
	   opened.  Check you control flow and number of arguments.

       Bit vector size > 32 non-portable
	   (W portable) Using bit vector sizes larger than 32 is non-portable.

       Bizarre copy of %s in %s
	   (P) Perl detected an attempt to copy an internal value that is not
	   copyable.

       Buffer overflow in prime_env_iter: %s
	   (W internal) A warning peculiar to VMS.  While Perl was preparing
	   to iterate over %ENV, it encountered a logical name or symbol
	   definition which was too long, so it was truncated to the string
	   shown.

       Callback called exit
	   (F) A subroutine invoked from an external package via call_sv()
	   exited by calling exit.

       %s() called too early to check prototype
	   (W prototype) You've called a function that has a prototype before
	   the parser saw a definition or declaration for it, and Perl could
	   not check that the call conforms to the prototype.  You need to
	   either add an early prototype declaration for the subroutine in
	   question, or move the subroutine definition ahead of the call to
	   get proper prototype checking.  Alternatively, if you are certain
	   that you're calling the function correctly, you may put an
	   ampersand before the name to avoid the warning.  See perlsub.

       Cannot compress integer in pack
	   (F) An argument to pack("w",...) was too large to compress.	The
	   BER compressed integer format can only be used with positive
	   integers, and you attempted to compress Infinity or a very large
	   number (> 1e308).  See "pack" in perlfunc.

       Cannot compress negative numbers in pack
	   (F) An argument to pack("w",...) was negative.  The BER compressed
	   integer format can only be used with positive integers.  See "pack"
	   in perlfunc.

       Cannot convert a reference to %s to typeglob
	   (F) You manipulated Perl's symbol table directly, stored a
	   reference in it, then tried to access that symbol via conventional
	   Perl syntax. The access triggers Perl to autovivify that typeglob,
	   but it there is no legal conversion from that type of reference to
	   a typeglob.

       Cannot copy to %s in %s
	   (P) Perl detected an attempt to copy a value to an internal type
	   that cannot be directly assigned not.

       Cannot find encoding "%s"
	   (S io) You tried to apply an encoding that did not exist to a
	   filehandle, either with open() or binmode().

       Can only compress unsigned integers in pack
	   (F) An argument to pack("w",...) was not an integer.	 The BER
	   compressed integer format can only be used with positive integers,
	   and you attempted to compress something else.  See "pack" in
	   perlfunc.

       Can't bless non-reference value
	   (F) Only hard references may be blessed.  This is how Perl
	   "enforces" encapsulation of objects.	 See perlobj.

       Can't "break" in a loop topicalizer
	   (F) You called "break", but you're in a "foreach" block rather than
	   a "given" block. You probably meant to use "next" or "last".

       Can't "break" outside a given block
	   (F) You called "break", but you're not inside a "given" block.

       Can't call method "%s" in empty package "%s"
	   (F) You called a method correctly, and it correctly indicated a
	   package functioning as a class, but that package doesn't have
	   ANYTHING defined in it, let alone methods.  See perlobj.

       Can't call method "%s" on an undefined value
	   (F) You used the syntax of a method call, but the slot filled by
	   the object reference or package name contains an undefined value.
	   Something like this will reproduce the error:

	       $BADREF = undef;
	       process $BADREF 1,2,3;
	       $BADREF->process(1,2,3);

       Can't call method "%s" on unblessed reference
	   (F) A method call must know in what package it's supposed to run.
	   It ordinarily finds this out from the object reference you supply,
	   but you didn't supply an object reference in this case.  A
	   reference isn't an object reference until it has been blessed.  See
	   perlobj.

       Can't call method "%s" without a package or object reference
	   (F) You used the syntax of a method call, but the slot filled by
	   the object reference or package name contains an expression that
	   returns a defined value which is neither an object reference nor a
	   package name.  Something like this will reproduce the error:

	       $BADREF = 42;
	       process $BADREF 1,2,3;
	       $BADREF->process(1,2,3);

       Can't chdir to %s
	   (F) You called "perl -x/foo/bar", but "/foo/bar" is not a directory
	   that you can chdir to, possibly because it doesn't exist.

       Can't check filesystem of script "%s" for nosuid
	   (P) For some reason you can't check the filesystem of the script
	   for nosuid.

       Can't coerce array into hash
	   (F) You used an array where a hash was expected, but the array has
	   no information on how to map from keys to array indices.  You can
	   do that only with arrays that have a hash reference at index 0.

       Can't coerce %s to integer in %s
	   (F) Certain types of SVs, in particular real symbol table entries
	   (typeglobs), can't be forced to stop being what they are.  So you
	   can't say things like:

	       *foo += 1;

	   You CAN say

	       $foo = *foo;
	       $foo += 1;

	   but then $foo no longer contains a glob.

       Can't coerce %s to number in %s
	   (F) Certain types of SVs, in particular real symbol table entries
	   (typeglobs), can't be forced to stop being what they are.

       Can't coerce %s to string in %s
	   (F) Certain types of SVs, in particular real symbol table entries
	   (typeglobs), can't be forced to stop being what they are.

       Can't "continue" outside a when block
	   (F) You called "continue", but you're not inside a "when" or
	   "default" block.

       Can't create pipe mailbox
	   (P) An error peculiar to VMS.  The process is suffering from
	   exhausted quotas or other plumbing problems.

       Can't declare class for non-scalar %s in "%s"
	   (F) Currently, only scalar variables can be declared with a
	   specific class qualifier in a "my", "our" or "state" declaration.
	   The semantics may be extended for other types of variables in
	   future.

       Can't declare %s in "%s"
	   (F) Only scalar, array, and hash variables may be declared as "my",
	   "our" or "state" variables.	They must have ordinary identifiers as
	   names.

       Can't do inplace edit: %s is not a regular file
	   (S inplace) You tried to use the -i switch on a special file, such
	   as a file in /dev, or a FIFO.  The file was ignored.

       Can't do inplace edit on %s: %s
	   (S inplace) The creation of the new file failed for the indicated
	   reason.

       Can't do inplace edit without backup
	   (F) You're on a system such as MS-DOS that gets confused if you try
	   reading from a deleted (but still opened) file.  You have to say
	   "-i.bak", or some such.

       Can't do inplace edit: %s would not be unique
	   (S inplace) Your filesystem does not support filenames longer than
	   14 characters and Perl was unable to create a unique filename
	   during inplace editing with the -i switch.  The file was ignored.

       Can't do {n,m} with n > m in regex; marked by <-- HERE in m/%s/
	   (F) Minima must be less than or equal to maxima. If you really want
	   your regexp to match something 0 times, just put {0}. The <-- HERE
	   shows in the regular expression about where the problem was
	   discovered. See perlre.

       Can't do waitpid with flags
	   (F) This machine doesn't have either waitpid() or wait4(), so only
	   waitpid() without flags is emulated.

       Can't emulate -%s on #! line
	   (F) The #! line specifies a switch that doesn't make sense at this
	   point.  For example, it'd be kind of silly to put a -x on the #!
	   line.

       Can't %s %s-endian %ss on this platform
	   (F) Your platform's byte-order is neither big-endian nor
	   little-endian, or it has a very strange pointer size.  Packing and
	   unpacking big- or little-endian floating point values and pointers
	   may not be possible.	 See "pack" in perlfunc.

       Can't exec "%s": %s
	   (W exec) A system(), exec(), or piped open call could not execute
	   the named program for the indicated reason.	Typical reasons
	   include: the permissions were wrong on the file, the file wasn't
	   found in $ENV{PATH}, the executable in question was compiled for
	   another architecture, or the #! line in a script points to an
	   interpreter that can't be run for similar reasons.  (Or maybe your
	   system doesn't support #! at all.)

       Can't exec %s
	   (F) Perl was trying to execute the indicated program for you
	   because that's what the #! line said.  If that's not what you
	   wanted, you may need to mention "perl" on the #! line somewhere.

       Can't execute %s
	   (F) You used the -S switch, but the copies of the script to execute
	   found in the PATH did not have correct permissions.

       Can't find an opnumber for "%s"
	   (F) A string of a form "CORE::word" was given to prototype(), but
	   there is no builtin with the name "word".

       Can't find %s character property "%s"
	   (F) You used "\p{}" or "\P{}" but the character property by that
	   name could not be found. Maybe you misspelled the name of the
	   property?  See "Properties accessible through \p{} and \P{}" in
	   perluniprops for a complete list of available properties.

       Can't find label %s
	   (F) You said to goto a label that isn't mentioned anywhere that
	   it's possible for us to go to.  See "goto" in perlfunc.

       Can't find %s on PATH
	   (F) You used the -S switch, but the script to execute could not be
	   found in the PATH.

       Can't find %s on PATH, '.' not in PATH
	   (F) You used the -S switch, but the script to execute could not be
	   found in the PATH, or at least not with the correct permissions.
	   The script exists in the current directory, but PATH prohibits
	   running it.

       Can't find string terminator %s anywhere before EOF
	   (F) Perl strings can stretch over multiple lines.  This message
	   means that the closing delimiter was omitted.  Because bracketed
	   quotes count nesting levels, the following is missing its final
	   parenthesis:

	       print q(The character '(' starts a side comment.);

	   If you're getting this error from a here-document, you may have
	   included unseen whitespace before or after your closing tag. A good
	   programmer's editor will have a way to help you find these
	   characters.

       Can't find Unicode property definition "%s"
	   (F) You may have tried to use "\p" which means a Unicode property
	   (for example "\p{Lu}" matches all uppercase letters).  If you did
	   mean to use a Unicode property, see "Properties accessible through
	   \p{} and \P{}" in perluniprops for a complete list of available
	   properties.	If you didn't mean to use a Unicode property, escape
	   the "\p", either by "\\p" (just the "\p") or by "\Q\p" (the rest of
	   the string, until possible "\E").

       Can't fork: %s
	   (F) A fatal error occurred while trying to fork while opening a
	   pipeline.

       Can't fork, trying again in 5 seconds
	   (W pipe) A fork in a piped open failed with EAGAIN and will be
	   retried after five seconds.

       Can't get filespec - stale stat buffer?
	   (S) A warning peculiar to VMS.  This arises because of the
	   difference between access checks under VMS and under the Unix model
	   Perl assumes.  Under VMS, access checks are done by filename,
	   rather than by bits in the stat buffer, so that ACLs and other
	   protections can be taken into account.  Unfortunately, Perl assumes
	   that the stat buffer contains all the necessary information, and
	   passes it, instead of the filespec, to the access checking routine.
	   It will try to retrieve the filespec using the device name and FID
	   present in the stat buffer, but this works only if you haven't made
	   a subsequent call to the CRTL stat() routine, because the device
	   name is overwritten with each call.	If this warning appears, the
	   name lookup failed, and the access checking routine gave up and
	   returned FALSE, just to be conservative.  (Note: The access
	   checking routine knows about the Perl "stat" operator and file
	   tests, so you shouldn't ever see this warning in response to a Perl
	   command; it arises only if some internal code takes stat buffers
	   lightly.)

       Can't get pipe mailbox device name
	   (P) An error peculiar to VMS.  After creating a mailbox to act as a
	   pipe, Perl can't retrieve its name for later use.

       Can't get SYSGEN parameter value for MAXBUF
	   (P) An error peculiar to VMS.  Perl asked $GETSYI how big you want
	   your mailbox buffers to be, and didn't get an answer.

       Can't "goto" into the middle of a foreach loop
	   (F) A "goto" statement was executed to jump into the middle of a
	   foreach loop.  You can't get there from here.  See "goto" in
	   perlfunc.

       Can't "goto" out of a pseudo block
	   (F) A "goto" statement was executed to jump out of what might look
	   like a block, except that it isn't a proper block.  This usually
	   occurs if you tried to jump out of a sort() block or subroutine,
	   which is a no-no.  See "goto" in perlfunc.

       Can't goto subroutine from a sort sub (or similar callback)
	   (F) The "goto subroutine" call can't be used to jump out of the
	   comparison sub for a sort(), or from a similar callback (such as
	   the reduce() function in List::Util).

       Can't goto subroutine from an eval-%s
	   (F) The "goto subroutine" call can't be used to jump out of an eval
	   "string" or block.

       Can't goto subroutine outside a subroutine
	   (F) The deeply magical "goto subroutine" call can only replace one
	   subroutine call for another.	 It can't manufacture one out of whole
	   cloth.  In general you should be calling it out of only an AUTOLOAD
	   routine anyway.  See "goto" in perlfunc.

       Can't ignore signal CHLD, forcing to default
	   (W signal) Perl has detected that it is being run with the SIGCHLD
	   signal (sometimes known as SIGCLD) disabled.	 Since disabling this
	   signal will interfere with proper determination of exit status of
	   child processes, Perl has reset the signal to its default value.
	   This situation typically indicates that the parent program under
	   which Perl may be running (e.g. cron) is being very careless.

       Can't kill a non-numeric process ID
	   (F) Process identifiers must be (signed) integers.  It is a fatal
	   error to attempt to kill() an undefined, empty-string or otherwise
	   non-numeric process identifier.

       Can't "last" outside a loop block
	   (F) A "last" statement was executed to break out of the current
	   block, except that there's this itty bitty problem called there
	   isn't a current block.  Note that an "if" or "else" block doesn't
	   count as a "loopish" block, as doesn't a block given to sort(),
	   map() or grep().  You can usually double the curlies to get the
	   same effect though, because the inner curlies will be considered a
	   block that loops once.  See "last" in perlfunc.

       Can't linearize anonymous symbol table
	   (F) Perl tried to calculate the method resolution order (MRO) of a
	   package, but failed because the package stash has no name.

       Can't load '%s' for module %s
	   (F) The module you tried to load failed to load a dynamic
	   extension. This may either mean that you upgraded your version of
	   perl to one that is incompatible with your old dynamic extensions
	   (which is known to happen between major versions of perl), or (more
	   likely) that your dynamic extension was built against an older
	   version of the library that is installed on your system. You may
	   need to rebuild your old dynamic extensions.

       Can't localize lexical variable %s
	   (F) You used local on a variable name that was previously declared
	   as a lexical variable using "my" or "state".	 This is not allowed.
	   If you want to localize a package variable of the same name,
	   qualify it with the package name.

       Can't localize through a reference
	   (F) You said something like "local $$ref", which Perl can't
	   currently handle, because when it goes to restore the old value of
	   whatever $ref pointed to after the scope of the local() is
	   finished, it can't be sure that $ref will still be a reference.

       Can't locate %s
	   (F) You said to "do" (or "require", or "use") a file that couldn't
	   be found. Perl looks for the file in all the locations mentioned in
	   @INC, unless the file name included the full path to the file.
	   Perhaps you need to set the PERL5LIB or PERL5OPT environment
	   variable to say where the extra library is, or maybe the script
	   needs to add the library name to @INC.  Or maybe you just
	   misspelled the name of the file.  See "require" in perlfunc and
	   lib.

       Can't locate auto/%s.al in @INC
	   (F) A function (or method) was called in a package which allows
	   autoload, but there is no function to autoload.  Most probable
	   causes are a misprint in a function/method name or a failure to
	   "AutoSplit" the file, say, by doing "make install".

       Can't locate loadable object for module %s in @INC
	   (F) The module you loaded is trying to load an external library,
	   like for example, "foo.so" or "bar.dll", but the DynaLoader module
	   was unable to locate this library.  See DynaLoader.

       Can't locate object method "%s" via package "%s"
	   (F) You called a method correctly, and it correctly indicated a
	   package functioning as a class, but that package doesn't define
	   that particular method, nor does any of its base classes.  See
	   perlobj.

       Can't locate package %s for @%s::ISA
	   (W syntax) The @ISA array contained the name of another package
	   that doesn't seem to exist.

       Can't locate PerlIO%s
	   (F) You tried to use in open() a PerlIO layer that does not exist,
	   e.g. open(FH, ">:nosuchlayer", "somefile").

       Can't make list assignment to \%ENV on this system
	   (F) List assignment to %ENV is not supported on some systems,
	   notably VMS.

       Can't modify %s in %s
	   (F) You aren't allowed to assign to the item indicated, or
	   otherwise try to change it, such as with an auto-increment.

       Can't modify nonexistent substring
	   (P) The internal routine that does assignment to a substr() was
	   handed a NULL.

       Can't modify non-lvalue subroutine call
	   (F) Subroutines meant to be used in lvalue context should be
	   declared as such, see "Lvalue subroutines" in perlsub.

       Can't msgrcv to read-only var
	   (F) The target of a msgrcv must be modifiable to be used as a
	   receive buffer.

       Can't "next" outside a loop block
	   (F) A "next" statement was executed to reiterate the current block,
	   but there isn't a current block.  Note that an "if" or "else" block
	   doesn't count as a "loopish" block, as doesn't a block given to
	   sort(), map() or grep().  You can usually double the curlies to get
	   the same effect though, because the inner curlies will be
	   considered a block that loops once.	See "next" in perlfunc.

       Can't open %s: %s
	   (S inplace) The implicit opening of a file through use of the "<>"
	   filehandle, either implicitly under the "-n" or "-p" command-line
	   switches, or explicitly, failed for the indicated reason.  Usually
	   this is because you don't have read permission for a file which you
	   named on the command line.

       Can't open a reference
	   (W io) You tried to open a scalar reference for reading or writing,
	   using the 3-arg open() syntax :

	       open FH, '>', $ref;

	   but your version of perl is compiled without perlio, and this form
	   of open is not supported.

       Can't open bidirectional pipe
	   (W pipe) You tried to say "open(CMD, "|cmd|")", which is not
	   supported.  You can try any of several modules in the Perl library
	   to do this, such as IPC::Open2.  Alternately, direct the pipe's
	   output to a file using ">", and then read it in under a different
	   file handle.

       Can't open error file %s as stderr
	   (F) An error peculiar to VMS.  Perl does its own command line
	   redirection, and couldn't open the file specified after '2>' or
	   '2>>' on the command line for writing.

       Can't open input file %s as stdin
	   (F) An error peculiar to VMS.  Perl does its own command line
	   redirection, and couldn't open the file specified after '<' on the
	   command line for reading.

       Can't open output file %s as stdout
	   (F) An error peculiar to VMS.  Perl does its own command line
	   redirection, and couldn't open the file specified after '>' or '>>'
	   on the command line for writing.

       Can't open output pipe (name: %s)
	   (P) An error peculiar to VMS.  Perl does its own command line
	   redirection, and couldn't open the pipe into which to send data
	   destined for stdout.

       Can't open perl script%s
	   (F) The script you specified can't be opened for the indicated
	   reason.

	   If you're debugging a script that uses #!, and normally relies on
	   the shell's $PATH search, the -S option causes perl to do that
	   search, so you don't have to type the path or "`which
	   $scriptname`".

       Can't read CRTL environ
	   (S) A warning peculiar to VMS.  Perl tried to read an element of
	   %ENV from the CRTL's internal environment array and discovered the
	   array was missing.  You need to figure out where your CRTL
	   misplaced its environ or define PERL_ENV_TABLES (see perlvms) so
	   that environ is not searched.

       Can't "redo" outside a loop block
	   (F) A "redo" statement was executed to restart the current block,
	   but there isn't a current block.  Note that an "if" or "else" block
	   doesn't count as a "loopish" block, as doesn't a block given to
	   sort(), map() or grep().  You can usually double the curlies to get
	   the same effect though, because the inner curlies will be
	   considered a block that loops once.	See "redo" in perlfunc.

       Can't remove %s: %s, skipping file
	   (S inplace) You requested an inplace edit without creating a backup
	   file.  Perl was unable to remove the original file to replace it
	   with the modified file.  The file was left unmodified.

       Can't rename %s to %s: %s, skipping file
	   (S inplace) The rename done by the -i switch failed for some
	   reason, probably because you don't have write permission to the
	   directory.

       Can't reopen input pipe (name: %s) in binary mode
	   (P) An error peculiar to VMS.  Perl thought stdin was a pipe, and
	   tried to reopen it to accept binary data.  Alas, it failed.

       Can't resolve method "%s" overloading "%s" in package "%s"
	   (F|P) Error resolving overloading specified by a method name (as
	   opposed to a subroutine reference): no such method callable via the
	   package. If method name is "???", this is an internal error.

       Can't return %s from lvalue subroutine
	   (F) Perl detected an attempt to return illegal lvalues (such as
	   temporary or readonly values) from a subroutine used as an lvalue.
	   This is not allowed.

       Can't return outside a subroutine
	   (F) The return statement was executed in mainline code, that is,
	   where there was no subroutine call to return out of.	 See perlsub.

       Can't return %s to lvalue scalar context
	   (F) You tried to return a complete array or hash from an lvalue
	   subroutine, but you called the subroutine in a way that made Perl
	   think you meant to return only one value. You probably meant to
	   write parentheses around the call to the subroutine, which tell
	   Perl that the call should be in list context.

       Can't stat script "%s"
	   (P) For some reason you can't fstat() the script even though you
	   have it open already.  Bizarre.

       Can't take log of %g
	   (F) For ordinary real numbers, you can't take the logarithm of a
	   negative number or zero. There's a Math::Complex package that comes
	   standard with Perl, though, if you really want to do that for the
	   negative numbers.

       Can't take sqrt of %g
	   (F) For ordinary real numbers, you can't take the square root of a
	   negative number.  There's a Math::Complex package that comes
	   standard with Perl, though, if you really want to do that.

       Can't undef active subroutine
	   (F) You can't undefine a routine that's currently running.  You
	   can, however, redefine it while it's running, and you can even
	   undef the redefined subroutine while the old routine is running.
	   Go figure.

       Can't unshift
	   (F) You tried to unshift an "unreal" array that can't be unshifted,
	   such as the main Perl stack.

       Can't upgrade %s (%d) to %d
	   (P) The internal sv_upgrade routine adds "members" to an SV, making
	   it into a more specialized kind of SV.  The top several SV types
	   are so specialized, however, that they cannot be interconverted.
	   This message indicates that such a conversion was attempted.

       Can't use anonymous symbol table for method lookup
	   (F) The internal routine that does method lookup was handed a
	   symbol table that doesn't have a name.  Symbol tables can become
	   anonymous for example by undefining stashes: "undef
	   %Some::Package::".

       Can't use an undefined value as %s reference
	   (F) A value used as either a hard reference or a symbolic reference
	   must be a defined value.  This helps to delurk some insidious
	   errors.

       Can't use bareword ("%s") as %s ref while "strict refs" in use
	   (F) Only hard references are allowed by "strict refs".  Symbolic
	   references are disallowed.  See perlref.

       Can't use %! because Errno.pm is not available
	   (F) The first time the %! hash is used, perl automatically loads
	   the Errno.pm module. The Errno module is expected to tie the %!
	   hash to provide symbolic names for $! errno values.

       Can't use both '<' and '>' after type '%c' in %s
	   (F) A type cannot be forced to have both big-endian and
	   little-endian byte-order at the same time, so this combination of
	   modifiers is not allowed.  See "pack" in perlfunc.

       Can't use %s for loop variable
	   (F) Only a simple scalar variable may be used as a loop variable on
	   a foreach.

       Can't use global %s in "%s"
	   (F) You tried to declare a magical variable as a lexical variable.
	   This is not allowed, because the magic can be tied to only one
	   location (namely the global variable) and it would be incredibly
	   confusing to have variables in your program that looked like
	   magical variables but weren't.

       Can't use '%c' in a group with different byte-order in %s
	   (F) You attempted to force a different byte-order on a type that is
	   already inside a group with a byte-order modifier.  For example you
	   cannot force little-endianness on a type that is inside a
	   big-endian group.

       Can't use "my %s" in sort comparison
	   (F) The global variables $a and $b are reserved for sort
	   comparisons.	 You mentioned $a or $b in the same line as the <=> or
	   cmp operator, and the variable had earlier been declared as a
	   lexical variable.  Either qualify the sort variable with the
	   package name, or rename the lexical variable.

       Can't use %s ref as %s ref
	   (F) You've mixed up your reference types.  You have to dereference
	   a reference of the type needed.  You can use the ref() function to
	   test the type of the reference, if need be.

       Can't use string ("%s") as %s ref while "strict refs" in use
	   (F) Only hard references are allowed by "strict refs".  Symbolic
	   references are disallowed.  See perlref.

       Can't use subscript on %s
	   (F) The compiler tried to interpret a bracketed expression as a
	   subscript.  But to the left of the brackets was an expression that
	   didn't look like a hash or array reference, or anything else
	   subscriptable.

       Can't use \%c to mean $%c in expression
	   (W syntax) In an ordinary expression, backslash is a unary operator
	   that creates a reference to its argument.  The use of backslash to
	   indicate a backreference to a matched substring is valid only as
	   part of a regular expression pattern.  Trying to do this in
	   ordinary Perl code produces a value that prints out looking like
	   SCALAR(0xdecaf).  Use the $1 form instead.

       Can't use "when" outside a topicalizer
	   (F) You have used a when() block that is neither inside a "foreach"
	   loop nor a "given" block. (Note that this error is issued on exit
	   from the "when" block, so you won't get the error if the match
	   fails, or if you use an explicit "continue".)

       Can't weaken a nonreference
	   (F) You attempted to weaken something that was not a reference.
	   Only references can be weakened.

       Can't x= to read-only value
	   (F) You tried to repeat a constant value (often the undefined
	   value) with an assignment operator, which implies modifying the
	   value itself.  Perhaps you need to copy the value to a temporary,
	   and repeat that.

       Character in 'C' format wrapped in pack
	   (W pack) You said

	       pack("C", $x)

	   where $x is either less than 0 or more than 255; the "C" format is
	   only for encoding native operating system characters (ASCII,
	   EBCDIC, and so on) and not for Unicode characters, so Perl behaved
	   as if you meant

	       pack("C", $x & 255)

	   If you actually want to pack Unicode codepoints, use the "U" format
	   instead.

       Character in 'W' format wrapped in pack
	   (W pack) You said

	       pack("U0W", $x)

	   where $x is either less than 0 or more than 255. However, "U0"-mode
	   expects all values to fall in the interval [0, 255], so Perl
	   behaved as if you meant:

	       pack("U0W", $x & 255)

       Character in 'c' format wrapped in pack
	   (W pack) You said

	       pack("c", $x)

	   where $x is either less than -128 or more than 127; the "c" format
	   is only for encoding native operating system characters (ASCII,
	   EBCDIC, and so on) and not for Unicode characters, so Perl behaved
	   as if you meant

	       pack("c", $x & 255);

	   If you actually want to pack Unicode codepoints, use the "U" format
	   instead.

       Character in '%c' format wrapped in unpack
	   (W unpack) You tried something like

	      unpack("H", "\x{2a1}")

	   where the format expects to process a byte (a character with a
	   value below 256), but a higher value was provided instead. Perl
	   uses the value modulus 256 instead, as if you had provided:

	      unpack("H", "\x{a1}")

       Character(s) in '%c' format wrapped in pack
	   (W pack) You tried something like

	      pack("u", "\x{1f3}b")

	   where the format expects to process a sequence of bytes (character
	   with a value below 256), but some of the characters had a higher
	   value. Perl uses the character values modulus 256 instead, as if
	   you had provided:

	      pack("u", "\x{f3}b")

       Character(s) in '%c' format wrapped in unpack
	   (W unpack) You tried something like

	      unpack("s", "\x{1f3}b")

	   where the format expects to process a sequence of bytes (character
	   with a value below 256), but some of the characters had a higher
	   value. Perl uses the character values modulus 256 instead, as if
	   you had provided:

	      unpack("s", "\x{f3}b")

       close() on unopened filehandle %s
	   (W unopened) You tried to close a filehandle that was never opened.

       closedir() attempted on invalid dirhandle %s
	   (W io) The dirhandle you tried to close is either closed or not
	   really a dirhandle.	Check your control flow.

       Code missing after '/'
	   (F) You had a (sub-)template that ends with a '/'. There must be
	   another template code following the slash. See "pack" in perlfunc.

       %s: Command not found
	   (A) You've accidentally run your script through csh instead of
	   Perl.  Check the #! line, or manually feed your script into Perl
	   yourself.

       Compilation failed in require
	   (F) Perl could not compile a file specified in a "require"
	   statement.  Perl uses this generic message when none of the errors
	   that it encountered were severe enough to halt compilation
	   immediately.

       Complex regular subexpression recursion limit (%d) exceeded
	   (W regexp) The regular expression engine uses recursion in complex
	   situations where back-tracking is required.	Recursion depth is
	   limited to 32766, or perhaps less in architectures where the stack
	   cannot grow arbitrarily.  ("Simple" and "medium" situations are
	   handled without recursion and are not subject to a limit.)  Try
	   shortening the string under examination; looping in Perl code (e.g.
	   with "while") rather than in the regular expression engine; or
	   rewriting the regular expression so that it is simpler or
	   backtracks less.  (See perlfaq2 for information on Mastering
	   Regular Expressions.)

       cond_broadcast() called on unlocked variable
	   (W threads) Within a thread-enabled program, you tried to call
	   cond_broadcast() on a variable which wasn't locked. The
	   cond_broadcast() function  is used to wake up another thread that
	   is waiting in a cond_wait(). To ensure that the signal isn't sent
	   before the other thread has a chance to enter the wait, it is usual
	   for the signaling thread to first wait for a lock on variable. This
	   lock attempt will only succeed after the other thread has entered
	   cond_wait() and thus relinquished the lock.

       cond_signal() called on unlocked variable
	   (W threads) Within a thread-enabled program, you tried to call
	   cond_signal() on a variable which wasn't locked. The cond_signal()
	   function  is used to wake up another thread that is waiting in a
	   cond_wait(). To ensure that the signal isn't sent before the other
	   thread has a chance to enter the wait, it is usual for the
	   signaling thread to first wait for a lock on variable. This lock
	   attempt will only succeed after the other thread has entered
	   cond_wait() and thus relinquished the lock.

       connect() on closed socket %s
	   (W closed) You tried to do a connect on a closed socket.  Did you
	   forget to check the return value of your socket() call?  See
	   "connect" in perlfunc.

       Constant(%s)%s: %s
	   (F) The parser found inconsistencies either while attempting to
	   define an overloaded constant, or when trying to find the character
	   name specified in the "\N{...}" escape.  Perhaps you forgot to load
	   the corresponding "overload" or "charnames" pragma?	See charnames
	   and overload.

       Constant(%s)%s: %s in regex; marked by <-- HERE in m/%s/
	   (F) The parser found inconsistencies while attempting to find the
	   character name specified in the "\N{...}" escape.  Perhaps you
	   forgot to load the corresponding "charnames" pragma?	 See
	   charnames.

       Constant is not %s reference
	   (F) A constant value (perhaps declared using the "use constant"
	   pragma) is being dereferenced, but it amounts to the wrong type of
	   reference.  The message indicates the type of reference that was
	   expected. This usually indicates a syntax error in dereferencing
	   the constant value.	See "Constant Functions" in perlsub and
	   constant.

       Constant subroutine %s redefined
	   (S) You redefined a subroutine which had previously been eligible
	   for inlining.  See "Constant Functions" in perlsub for commentary
	   and workarounds.

       Constant subroutine %s undefined
	   (W misc) You undefined a subroutine which had previously been
	   eligible for inlining.  See "Constant Functions" in perlsub for
	   commentary and workarounds.

       Copy method did not return a reference
	   (F) The method which overloads "=" is buggy. See "Copy Constructor"
	   in overload.

       CORE::%s is not a keyword
	   (F) The CORE:: namespace is reserved for Perl keywords.

       corrupted regexp pointers
	   (P) The regular expression engine got confused by what the regular
	   expression compiler gave it.

       corrupted regexp program
	   (P) The regular expression engine got passed a regexp program
	   without a valid magic number.

       Corrupt malloc ptr 0x%lx at 0x%lx
	   (P) The malloc package that comes with Perl had an internal
	   failure.

       Count after length/code in unpack
	   (F) You had an unpack template indicating a counted-length string,
	   but you have also specified an explicit size for the string.	 See
	   "pack" in perlfunc.

       Deep recursion on subroutine "%s"
	   (W recursion) This subroutine has called itself (directly or
	   indirectly) 100 times more than it has returned.  This probably
	   indicates an infinite recursion, unless you're writing strange
	   benchmark programs, in which case it indicates something else.

	   This threshold can be changed from 100, by recompiling the perl
	   binary, setting the C pre-processor macro "PERL_SUB_DEPTH_WARN" to
	   the desired value.

       defined(@array) is deprecated
	   (D deprecated) defined() is not usually useful on arrays because it
	   checks for an undefined scalar value.  If you want to see if the
	   array is empty, just use "if (@array) { # not empty }" for example.

       defined(%hash) is deprecated
	   (D deprecated) defined() is not usually useful on hashes because it
	   checks for an undefined scalar value.  If you want to see if the
	   hash is empty, just use "if (%hash) { # not empty }" for example.

       %s defines neither package nor VERSIONO-version check failed
	   (F) You said something like "use Module 42" but in the Module file
	   there are neither package declarations nor a $VERSION.

       Delimiter for here document is too long
	   (F) In a here document construct like "<<FOO", the label "FOO" is
	   too long for Perl to handle.	 You have to be seriously twisted to
	   write code that triggers this error.

       Deprecated character(s) in \\N{...} starting at '%s'
	   (D deprecated) Just about anything is legal for the "..." in
	   "\N{...}".  But starting in 5.12, non-reasonable ones that don't
	   look like names are deprecated.  A reasonable name begins with an
	   alphabetic character and continues with any combination of
	   alphanumerics, dashes, spaces, parentheses or colons.

       Deprecated use of my() in false conditional
	   (D deprecated) You used a declaration similar to "my $x if 0".
	   There has been a long-standing bug in Perl that causes a lexical
	   variable not to be cleared at scope exit when its declaration
	   includes a false conditional. Some people have exploited this bug
	   to achieve a kind of static variable. Since we intend to fix this
	   bug, we don't want people relying on this behavior. You can achieve
	   a similar static effect by declaring the variable in a separate
	   block outside the function, eg

	       sub f { my $x if 0; return $x++ }

	   becomes

	       { my $x; sub f { return $x++ } }

	   Beginning with perl 5.9.4, you can also use "state" variables to
	   have lexicals that are initialized only once (see feature):

	       sub f { state $x; return $x++ }

       DESTROY created new reference to dead object '%s'
	   (F) A DESTROY() method created a new reference to the object which
	   is just being DESTROYed. Perl is confused, and prefers to abort
	   rather than to create a dangling reference.

       Did not produce a valid header
	   See Server error.

       %s did not return a true value
	   (F) A required (or used) file must return a true value to indicate
	   that it compiled correctly and ran its initialization code
	   correctly.  It's traditional to end such a file with a "1;", though
	   any true value would do.  See "require" in perlfunc.

       (Did you mean &%s instead?)
	   (W) You probably referred to an imported subroutine &FOO as $FOO or
	   some such.

       (Did you mean "local" instead of "our"?)
	   (W misc) Remember that "our" does not localize the declared global
	   variable.  You have declared it again in the same lexical scope,
	   which seems superfluous.

       (Did you mean $ or @ instead of %?)
	   (W) You probably said %hash{$key} when you meant $hash{$key} or
	   @hash{@keys}.  On the other hand, maybe you just meant %hash and
	   got carried away.

       Died
	   (F) You passed die() an empty string (the equivalent of "die """)
	   or you called it with no args and both $@ and $_ were empty.

       Document contains no data
	   See Server error.

       %s does not define %s::VERSIONO-version check failed
	   (F) You said something like "use Module 42" but the Module did not
	   define a "$VERSION."

       '/' does not take a repeat count
	   (F) You cannot put a repeat count of any kind right after the '/'
	   code.  See "pack" in perlfunc.

       Don't know how to handle magic of type '%s'
	   (P) The internal handling of magical variables has been cursed.

       do_study: out of memory
	   (P) This should have been caught by safemalloc() instead.

       (Do you need to predeclare %s?)
	   (S syntax) This is an educated guess made in conjunction with the
	   message "%s found where operator expected".	It often means a
	   subroutine or module name is being referenced that hasn't been
	   declared yet.  This may be because of ordering problems in your
	   file, or because of a missing "sub", "package", "require", or "use"
	   statement.  If you're referencing something that isn't defined yet,
	   you don't actually have to define the subroutine or package before
	   the current location.  You can use an empty "sub foo;" or "package
	   FOO;" to enter a "forward" declaration.

       dump() better written as CORE::dump()
	   (W misc) You used the obsolescent "dump()" built-in function,
	   without fully qualifying it as "CORE::dump()".  Maybe it's a typo.
	   See "dump" in perlfunc.

       dump is not supported
	   (F) Your machine doesn't support dump/undump.

       Duplicate free() ignored
	   (S malloc) An internal routine called free() on something that had
	   already been freed.

       Duplicate modifier '%c' after '%c' in %s
	   (W) You have applied the same modifier more than once after a type
	   in a pack template.	See "pack" in perlfunc.

       elseif should be elsif
	   (S syntax) There is no keyword "elseif" in Perl because Larry
	   thinks it's ugly. Your code will be interpreted as an attempt to
	   call a method named "elseif" for the class returned by the
	   following block.  This is unlikely to be what you want.

       Empty %s
	   (F) "\p" and "\P" are used to introduce a named Unicode property,
	   as described in perlunicode and perlre. You used "\p" or "\P" in a
	   regular expression without specifying the property name.

       entering effective %s failed
	   (F) While under the "use filetest" pragma, switching the real and
	   effective uids or gids failed.

       %ENV is aliased to %s
	   (F) You're running under taint mode, and the %ENV variable has been
	   aliased to another hash, so it doesn't reflect anymore the state of
	   the program's environment. This is potentially insecure.

       Error converting file specification %s
	   (F) An error peculiar to VMS.  Because Perl may have to deal with
	   file specifications in either VMS or Unix syntax, it converts them
	   to a single form when it must operate on them directly.  Either
	   you've passed an invalid file specification to Perl, or you've
	   found a case the conversion routines don't handle.  Drat.

       %s: Eval-group in insecure regular expression
	   (F) Perl detected tainted data when trying to compile a regular
	   expression that contains the "(?{ ... })" zero-width assertion,
	   which is unsafe.  See "(?{ code })" in perlre, and perlsec.

       %s: Eval-group not allowed at runtime, use re 'eval'
	   (F) Perl tried to compile a regular expression containing the "(?{
	   ... })" zero-width assertion at run time, as it would when the
	   pattern contains interpolated values.  Since that is a security
	   risk, it is not allowed.  If you insist, you may still do this by
	   explicitly building the pattern from an interpolated string at run
	   time and using that in an eval().  See "(?{ code })" in perlre.

       %s: Eval-group not allowed, use re 'eval'
	   (F) A regular expression contained the "(?{ ... })" zero-width
	   assertion, but that construct is only allowed when the "use re
	   'eval'" pragma is in effect.	 See "(?{ code })" in perlre.

       EVAL without pos change exceeded limit in regex; marked by <-- HERE in
	    m/%s/
	   (F) You used a pattern that nested too many EVAL calls without
	   consuming any text. Restructure the pattern so that text is
	   consumed.

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.

       Excessively long <> operator
	   (F) The contents of a <> operator may not exceed the maximum size
	   of a Perl identifier.  If you're just trying to glob a long list of
	   filenames, try using the glob() operator, or put the filenames into
	   a variable and glob that.

       exec? I'm not *that* kind of operating system
	   (F) The "exec" function is not implemented in MacPerl. See
	   perlport.

       Execution of %s aborted due to compilation errors.
	   (F) The final summary message when a Perl compilation fails.

       Exiting eval via %s
	   (W exiting) You are exiting an eval by unconventional means, such
	   as a goto, or a loop control statement.

       Exiting format via %s
	   (W exiting) You are exiting a format by unconventional means, such
	   as a goto, or a loop control statement.

       Exiting pseudo-block via %s
	   (W exiting) You are exiting a rather special block construct (like
	   a sort block or subroutine) by unconventional means, such as a
	   goto, or a loop control statement.  See "sort" in perlfunc.

       Exiting subroutine via %s
	   (W exiting) You are exiting a subroutine by unconventional means,
	   such as a goto, or a loop control statement.

       Exiting substitution via %s
	   (W exiting) You are exiting a substitution by unconventional means,
	   such as a return, a goto, or a loop control statement.

       Explicit blessing to '' (assuming package main)
	   (W misc) You are blessing a reference to a zero length string.
	   This has the effect of blessing the reference into the package
	   main.  This is usually not what you want.  Consider providing a
	   default target package, e.g. bless($ref, $p || 'MyPackage');

       %s: Expression syntax
	   (A) You've accidentally run your script through csh instead of
	   Perl.  Check the #! line, or manually feed your script into Perl
	   yourself.

       %s failedO-call queue aborted
	   (F) An untrapped exception was raised while executing a UNITCHECK,
	   CHECK, INIT, or END subroutine.  Processing of the remainder of the
	   queue of such routines has been prematurely ended.

       False [] range "%s" in regex; marked by <-- HERE in m/%s/
	   (W regexp) A character class range must start and end at a literal
	   character, not another character class like "\d" or "[:alpha:]".
	   The "-" in your false range is interpreted as a literal "-".
	   Consider quoting the "-", "\-".  The <-- HERE shows in the regular
	   expression about where the problem was discovered.  See perlre.

       Fatal VMS error at %s, line %d
	   (P) An error peculiar to VMS.  Something untoward happened in a VMS
	   system service or RTL routine; Perl's exit status should provide
	   more details.  The filename in "at %s" and the line number in "line
	   %d" tell you which section of the Perl source code is distressed.

       fcntl is not implemented
	   (F) Your machine apparently doesn't implement fcntl().  What is
	   this, a PDP-11 or something?

       FETCHSIZE returned a negative value
	   (F) A tied array claimed to have a negative number of elements,
	   which is not possible.

       Field too wide in 'u' format in pack
	   (W pack) Each line in an uuencoded string start with a length
	   indicator which can't encode values above 63. So there is no point
	   in asking for a line length bigger than that. Perl will behave as
	   if you specified "u63" as format.

       Filehandle %s opened only for input
	   (W io) You tried to write on a read-only filehandle.	 If you
	   intended it to be a read-write filehandle, you needed to open it
	   with "+<" or "+>" or "+>>" instead of with "<" or nothing.  If you
	   intended only to write the file, use ">" or ">>".  See "open" in
	   perlfunc.

       Filehandle %s opened only for output
	   (W io) You tried to read from a filehandle opened only for writing,
	   If you intended it to be a read/write filehandle, you needed to
	   open it with "+<" or "+>" or "+>>" instead of with "<" or nothing.
	   If you intended only to read from the file, use "<".	 See "open" in
	   perlfunc.  Another possibility is that you attempted to open
	   filedescriptor 0 (also known as STDIN) for output (maybe you closed
	   STDIN earlier?).

       Filehandle %s reopened as %s only for input
	   (W io) You opened for reading a filehandle that got the same
	   filehandle id as STDOUT or STDERR. This occurred because you closed
	   STDOUT or STDERR previously.

       Filehandle STDIN reopened as %s only for output
	   (W io) You opened for writing a filehandle that got the same
	   filehandle id as STDIN. This occurred because you closed STDIN
	   previously.

       Final $ should be \$ or $name
	   (F) You must now decide whether the final $ in a string was meant
	   to be a literal dollar sign, or was meant to introduce a variable
	   name that happens to be missing.  So you have to put either the
	   backslash or the name.

       flock() on closed filehandle %s
	   (W closed) The filehandle you're attempting to flock() got itself
	   closed some time before now.	 Check your control flow.  flock()
	   operates on filehandles.  Are you attempting to call flock() on a
	   dirhandle by the same name?

       Format not terminated
	   (F) A format must be terminated by a line with a solitary dot.
	   Perl got to the end of your file without finding such a line.

       Format %s redefined
	   (W redefine) You redefined a format.	 To suppress this warning, say

	       {
		   no warnings 'redefine';
		   eval "format NAME =...";
	       }

       Found = in conditional, should be ==
	   (W syntax) You said

	       if ($foo = 123)

	   when you meant

	       if ($foo == 123)

	   (or something like that).

       %s found where operator expected
	   (S syntax) The Perl lexer knows whether to expect a term or an
	   operator.  If it sees what it knows to be a term when it was
	   expecting to see an operator, it gives you this warning.  Usually
	   it indicates that an operator or delimiter was omitted, such as a
	   semicolon.

       gdbm store returned %d, errno %d, key "%s"
	   (S) A warning from the GDBM_File extension that a store failed.

       gethostent not implemented
	   (F) Your C library apparently doesn't implement gethostent(),
	   probably because if it did, it'd feel morally obligated to return
	   every hostname on the Internet.

       get%sname() on closed socket %s
	   (W closed) You tried to get a socket or peer socket name on a
	   closed socket.  Did you forget to check the return value of your
	   socket() call?

       getpwnam returned invalid UIC %#o for user "%s"
	   (S) A warning peculiar to VMS.  The call to "sys$getuai" underlying
	   the "getpwnam" operator returned an invalid UIC.

       getsockopt() on closed socket %s
	   (W closed) You tried to get a socket option on a closed socket.
	   Did you forget to check the return value of your socket() call?
	   See "getsockopt" in perlfunc.

       Global symbol "%s" requires explicit package name
	   (F) You've said "use strict" or "use strict vars", which indicates
	   that all variables must either be lexically scoped (using "my" or
	   "state"), declared beforehand using "our", or explicitly qualified
	   to say which package the global variable is in (using "::").

       glob failed (%s)
	   (W glob) Something went wrong with the external program(s) used for
	   "glob" and "<*.c>".	Usually, this means that you supplied a "glob"
	   pattern that caused the external program to fail and exit with a
	   nonzero status.  If the message indicates that the abnormal exit
	   resulted in a coredump, this may also mean that your csh (C shell)
	   is broken.  If so, you should change all of the csh-related
	   variables in config.sh:  If you have tcsh, make the variables refer
	   to it as if it were csh (e.g.  "full_csh='/usr/bin/tcsh'");
	   otherwise, make them all empty (except that "d_csh" should be
	   'undef') so that Perl will think csh is missing.  In either case,
	   after editing config.sh, run "./Configure -S" and rebuild Perl.

       Glob not terminated
	   (F) The lexer saw a left angle bracket in a place where it was
	   expecting a term, so it's looking for the corresponding right angle
	   bracket, and not finding it.	 Chances are you left some needed
	   parentheses out earlier in the line, and you really meant a "less
	   than".

       gmtime(%.0f) too large
	   (W overflow) You called "gmtime" with an number that was larger
	   than it can reliably handle and "gmtime" probably returned the
	   wrong date. This warning is also triggered with nan (the special
	   not-a-number value).

       gmtime(%.0f) too small
	   (W overflow) You called "gmtime" with an number that was smaller
	   than it can reliably handle and "gmtime" probably returned the
	   wrong date. This warning is also triggered with nan (the special
	   not-a-number value).

       Got an error from DosAllocMem
	   (P) An error peculiar to OS/2.  Most probably you're using an
	   obsolete version of Perl, and this should not happen anyway.

       goto must have label
	   (F) Unlike with "next" or "last", you're not allowed to goto an
	   unspecified destination.  See "goto" in perlfunc.

       ()-group starts with a count
	   (F) A ()-group started with a count.	 A count is supposed to follow
	   something: a template character or a ()-group.
	    See "pack" in perlfunc.

       %s had compilation errors.
	   (F) The final summary message when a "perl -c" fails.

       Had to create %s unexpectedly
	   (S internal) A routine asked for a symbol from a symbol table that
	   ought to have existed already, but for some reason it didn't, and
	   had to be created on an emergency basis to prevent a core dump.

       Hash %%s missing the % in argument %d of %s()
	   (D deprecated) Really old Perl let you omit the % on hash names in
	   some spots.	This is now heavily deprecated.

       %s has too many errors
	   (F) The parser has given up trying to parse the program after 10
	   errors.  Further error messages would likely be uninformative.

       Hexadecimal number > 0xffffffff non-portable
	   (W portable) The hexadecimal number you specified is larger than
	   2**32-1 (4294967295) and therefore non-portable between systems.
	   See perlport for more on portability concerns.

       Identifier too long
	   (F) Perl limits identifiers (names for variables, functions, etc.)
	   to about 250 characters for simple names, and somewhat more for
	   compound names (like $A::B).	 You've exceeded Perl's limits.
	   Future versions of Perl are likely to eliminate these arbitrary
	   limitations.

       Ignoring zero length \N{} in character class
	   (W) Named Unicode character escapes (\N{...}) may return a zero
	   length sequence.  When such an escape is used in a character class
	   its behaviour is not well defined. Check that the correct escape
	   has been used, and the correct charname handler is in scope.

       Illegal binary digit %s
	   (F) You used a digit other than 0 or 1 in a binary number.

       Illegal binary digit %s ignored
	   (W digit) You may have tried to use a digit other than 0 or 1 in a
	   binary number.  Interpretation of the binary number stopped before
	   the offending digit.

       Illegal character %s (carriage return)
	   (F) Perl normally treats carriage returns in the program text as it
	   would any other whitespace, which means you should never see this
	   error when Perl was built using standard options.  For some reason,
	   your version of Perl appears to have been built without this
	   support.  Talk to your Perl administrator.

       Illegal character in prototype for %s : %s
	   (W illegalproto) An illegal character was found in a prototype
	   declaration.	 Legal characters in prototypes are $, @, %, *, ;, [,
	   ], &, and \.

       Illegal declaration of anonymous subroutine
	   (F) When using the "sub" keyword to construct an anonymous
	   subroutine, you must always specify a block of code. See perlsub.

       Illegal declaration of subroutine %s
	   (F) A subroutine was not declared correctly. See perlsub.

       Illegal division by zero
	   (F) You tried to divide a number by 0.  Either something was wrong
	   in your logic, or you need to put a conditional in to guard against
	   meaningless input.

       Illegal hexadecimal digit %s ignored
	   (W digit) You may have tried to use a character other than 0 - 9 or
	   A - F, a - f in a hexadecimal number.  Interpretation of the
	   hexadecimal number stopped before the illegal character.

       Illegal modulus zero
	   (F) You tried to divide a number by 0 to get the remainder.	Most
	   numbers don't take to this kindly.

       Illegal number of bits in vec
	   (F) The number of bits in vec() (the third argument) must be a
	   power of two from 1 to 32 (or 64, if your platform supports that).

       Illegal octal digit %s
	   (F) You used an 8 or 9 in an octal number.

       Illegal octal digit %s ignored
	   (W digit) You may have tried to use an 8 or 9 in an octal number.
	   Interpretation of the octal number stopped before the 8 or 9.

       Illegal switch in PERL5OPT: -%c
	   (X) The PERL5OPT environment variable may only be used to set the
	   following switches: -[CDIMUdmtw].

       Ill-formed CRTL environ value "%s"
	   (W internal) A warning peculiar to VMS.  Perl tried to read the
	   CRTL's internal environ array, and encountered an element without
	   the "=" delimiter used to separate keys from values.	 The element
	   is ignored.

       Ill-formed message in prime_env_iter: |%s|
	   (W internal) A warning peculiar to VMS.  Perl tried to read a
	   logical name or CLI symbol definition when preparing to iterate
	   over %ENV, and didn't see the expected delimiter between key and
	   value, so the line was ignored.

       (in cleanup) %s
	   (W misc) This prefix usually indicates that a DESTROY() method
	   raised the indicated exception.  Since destructors are usually
	   called by the system at arbitrary points during execution, and
	   often a vast number of times, the warning is issued only once for
	   any number of failures that would otherwise result in the same
	   message being repeated.

	   Failure of user callbacks dispatched using the "G_KEEPERR" flag
	   could also result in this warning.  See "G_KEEPERR" in perlcall.

       Inconsistent hierarchy during C3 merge of class '%s': merging failed on
	    parent '%s'
	   (F) The method resolution order (MRO) of the given class is not
	   C3-consistent, and you have enabled the C3 MRO for this class.  See
	   the C3 documentation in mro for more information.

       In EBCDIC the v-string components cannot exceed 2147483647
	   (F) An error peculiar to EBCDIC.  Internally, v-strings are stored
	   as Unicode code points, and encoded in EBCDIC as UTF-EBCDIC.	 The
	   UTF-EBCDIC encoding is limited to code points no larger than
	   2147483647 (0x7FFFFFFF).

       Infinite recursion in regex; marked by <-- HERE in m/%s/
	   (F) You used a pattern that references itself without consuming any
	   input text. You should check the pattern to ensure that recursive
	   patterns either consume text or fail.

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.

       Initialization of state variables in list context currently forbidden
	   (F) Currently the implementation of "state" only permits the
	   initialization of scalar variables in scalar context. Re-write
	   "state ($a) = 42" as "state $a = 42" to change from list to scalar
	   context. Constructions such as "state (@a) = foo()" will be
	   supported in a future perl release.

       Insecure dependency in %s
	   (F) You tried to do something that the tainting mechanism didn't
	   like.  The tainting mechanism is turned on when you're running
	   setuid or setgid, or when you specify -T to turn it on explicitly.
	   The tainting mechanism labels all data that's derived directly or
	   indirectly from the user, who is considered to be unworthy of your
	   trust.  If any such data is used in a "dangerous" operation, you
	   get this error.  See perlsec for more information.

       Insecure directory in %s
	   (F) You can't use system(), exec(), or a piped open in a setuid or
	   setgid script if $ENV{PATH} contains a directory that is writable
	   by the world.  Also, the PATH must not contain any relative
	   directory.  See perlsec.

       Insecure $ENV{%s} while running %s
	   (F) You can't use system(), exec(), or a piped open in a setuid or
	   setgid script if any of $ENV{PATH}, $ENV{IFS}, $ENV{CDPATH},
	   $ENV{ENV}, $ENV{BASH_ENV} or $ENV{TERM} are derived from data
	   supplied (or potentially supplied) by the user.  The script must
	   set the path to a known value, using trustworthy data.  See
	   perlsec.

       Integer overflow in %s number
	   (W overflow) The hexadecimal, octal or binary number you have
	   specified either as a literal or as an argument to hex() or oct()
	   is too big for your architecture, and has been converted to a
	   floating point number.  On a 32-bit architecture the largest
	   hexadecimal, octal or binary number representable without overflow
	   is 0xFFFFFFFF, 037777777777, or 0b11111111111111111111111111111111
	   respectively.  Note that Perl transparently promotes all numbers to
	   a floating point representation internallyO-subject to loss of
	   precision errors in subsequent operations.

       Integer overflow in format string for %s
	   (F) The indexes and widths specified in the format string of
	   "printf()" or "sprintf()" are too large.  The numbers must not
	   overflow the size of integers for your architecture.

       Integer overflow in version
	   (F) Some portion of a version initialization is too large for the
	   size of integers for your architecture.  This is not a warning
	   because there is no rational reason for a version to try and use a
	   element larger than typically 2**32.	 This is usually caused by
	   trying to use some odd mathematical operation as a version, like
	   100/9.

       Internal disaster in regex; marked by <-- HERE in m/%s/
	   (P) Something went badly wrong in the regular expression parser.
	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.

       Internal inconsistency in tracking vforks
	   (S) A warning peculiar to VMS.  Perl keeps track of the number of
	   times you've called "fork" and "exec", to determine whether the
	   current call to "exec" should affect the current script or a
	   subprocess (see "exec LIST" in perlvms).  Somehow, this count has
	   become scrambled, so Perl is making a guess and treating this
	   "exec" as a request to terminate the Perl script and execute the
	   specified command.

       Internal urp in regex; marked by <-- HERE in m/%s/
	   (P) Something went badly awry in the regular expression parser. The
	   <-- HERE shows in the regular expression about where the problem
	   was discovered.

       %s (...) interpreted as function
	   (W syntax) You've run afoul of the rule that says that any list
	   operator followed by parentheses turns into a function, with all
	   the list operators arguments found inside the parentheses.  See
	   "Terms and List Operators (Leftward)" in perlop.

       Invalid %s attribute: %s
	   The indicated attribute for a subroutine or variable was not
	   recognized by Perl or by a user-supplied handler.  See attributes.

       Invalid %s attributes: %s
	   The indicated attributes for a subroutine or variable were not
	   recognized by Perl or by a user-supplied handler.  See attributes.

       Invalid conversion in %s: "%s"
	   (W printf) Perl does not understand the given format conversion.
	   See "sprintf" in perlfunc.

       Invalid escape in the specified encoding in regex; marked by <-- HERE
	    in m/%s/
	   (W regexp) The numeric escape (for example "\xHH") of value < 256
	   didn't correspond to a single character through the conversion from
	   the encoding specified by the encoding pragma.  The escape was
	   replaced with REPLACEMENT CHARACTER (U+FFFD) instead.  The <-- HERE
	   shows in the regular expression about where the escape was
	   discovered.

       Invalid mro name: '%s'
	   (F) You tried to "mro::set_mro("classname", "foo")" or "use mro
	   'foo'", where "foo" is not a valid method resolution order (MRO).
	   (Currently, the only valid ones are "dfs" and "c3"). See mro.

       Invalid [] range "%s" in regex; marked by <-- HERE in m/%s/
	   (F) The range specified in a character class had a minimum
	   character greater than the maximum character.  One possibility is
	   that you forgot the "{}" from your ending "\x{}" - "\x" without the
	   curly braces can go only up to "ff".	 The <-- HERE shows in the
	   regular expression about where the problem was discovered.  See
	   perlre.

       Invalid range "%s" in transliteration operator
	   (F) The range specified in the tr/// or y/// operator had a minimum
	   character greater than the maximum character.  See perlop.

       Invalid separator character %s in attribute list
	   (F) Something other than a colon or whitespace was seen between the
	   elements of an attribute list.  If the previous attribute had a
	   parenthesised parameter list, perhaps that list was terminated too
	   soon.  See attributes.

       Invalid separator character %s in PerlIO layer specification %s
	   (W layer) When pushing layers onto the Perl I/O system, something
	   other than a colon or whitespace was seen between the elements of a
	   layer list.	If the previous attribute had a parenthesised
	   parameter list, perhaps that list was terminated too soon.

       Invalid type '%s' in %s
	   (F) The given character is not a valid pack or unpack type.	See
	   "pack" in perlfunc.	(W) The given character is not a valid pack or
	   unpack type but used to be silently ignored.

       Invalid version format (multiple underscores)
	   (F) Versions may contain at most a single underscore, which signals
	   that the version is a beta release.	See version for the allowed
	   version formats.

       Invalid version format (underscores before decimal)
	   (F) Versions may not contain decimals after the optional
	   underscore.	See version for the allowed version formats.

       ioctl is not implemented
	   (F) Your machine apparently doesn't implement ioctl(), which is
	   pretty strange for a machine that supports C.

       ioctl() on unopened %s
	   (W unopened) You tried ioctl() on a filehandle that was never
	   opened.  Check you control flow and number of arguments.

       IO layers (like '%s') unavailable
	   (F) Your Perl has not been configured to have PerlIO, and therefore
	   you cannot use IO layers.  To have PerlIO Perl must be configured
	   with 'useperlio'.

       IO::Socket::atmark not implemented on this architecture
	   (F) Your machine doesn't implement the sockatmark() functionality,
	   neither as a system call or an ioctl call (SIOCATMARK).

       $* is no longer supported
	   (D deprecated, syntax) The special variable $*, deprecated in older
	   perls, has been removed as of 5.9.0 and is no longer supported. In
	   previous versions of perl the use of $* enabled or disabled
	   multi-line matching within a string.

	   Instead of using $* you should use the "/m" (and maybe "/s") regexp
	   modifiers. (In older versions: when $* was set to a true value then
	   all regular expressions behaved as if they were written using
	   "/m".)

       $# is no longer supported
	   (D deprecated, syntax) The special variable $#, deprecated in older
	   perls, has been removed as of 5.9.3 and is no longer supported. You
	   should use the printf/sprintf functions instead.

       `%s' is not a code reference
	   (W overload) The second (fourth, sixth, ...) argument of
	   overload::constant needs to be a code reference. Either an
	   anonymous subroutine, or a reference to a subroutine.

       `%s' is not an overloadable type
	   (W overload) You tried to overload a constant type the overload
	   package is unaware of.

       junk on end of regexp
	   (P) The regular expression parser is confused.

       Label not found for "last %s"
	   (F) You named a loop to break out of, but you're not currently in a
	   loop of that name, not even if you count where you were called
	   from.  See "last" in perlfunc.

       Label not found for "next %s"
	   (F) You named a loop to continue, but you're not currently in a
	   loop of that name, not even if you count where you were called
	   from.  See "last" in perlfunc.

       Label not found for "redo %s"
	   (F) You named a loop to restart, but you're not currently in a loop
	   of that name, not even if you count where you were called from.
	   See "last" in perlfunc.

       leaving effective %s failed
	   (F) While under the "use filetest" pragma, switching the real and
	   effective uids or gids failed.

       length/code after end of string in unpack
	   (F) While unpacking, the string buffer was already used up when an
	   unpack length/code combination tried to obtain more data. This
	   results in an undefined value for the length. See "pack" in
	   perlfunc.

       Lexing code attempted to stuff non-Latin-1 character into Latin-1 input
	   (F) An extension is attempting to insert text into the current
	   parse (using lex_stuff_pvn_flags or similar), but tried to insert a
	   character that couldn't be part of the current input.  This is an
	   inherent pitfall of the stuffing mechanism, and one of the reasons
	   to avoid it.	 Where it is necessary to stuff, stuffing only plain
	   ASCII is recommended.

       Lexing code internal error (%s)
	   (F) Lexing code supplied by an extension violated the lexer's API
	   in a detectable way.

       listen() on closed socket %s
	   (W closed) You tried to do a listen on a closed socket.  Did you
	   forget to check the return value of your socket() call?  See
	   "listen" in perlfunc.

       localtime(%.0f) too large
	   (W overflow) You called "localtime" with an number that was larger
	   than it can reliably handle and "localtime" probably returned the
	   wrong date. This warning is also triggered with nan (the special
	   not-a-number value).

       localtime(%.0f) too small
	   (W overflow) You called "localtime" with an number that was smaller
	   than it can reliably handle and "localtime" probably returned the
	   wrong date. This warning is also triggered with nan (the special
	   not-a-number value).

       Lookbehind longer than %d not implemented in regex m/%s/
	   (F) There is currently a limit on the length of string which
	   lookbehind can handle. This restriction may be eased in a future
	   release.

       Lost precision when %s %f by 1
	   (W) The value you attempted to increment or decrement by one is too
	   large for the underlying floating point representation to store
	   accurately, hence the target of "++" or "--" is unchanged. Perl
	   issues this warning because it has already switched from integers
	   to floating point when values are too large for integers, and now
	   even floating point is insufficient.	 You may wish to switch to
	   using Math::BigInt explicitly.

       lstat() on filehandle %s
	   (W io) You tried to do an lstat on a filehandle.  What did you mean
	   by that?  lstat() makes sense only on filenames.  (Perl did a
	   fstat() instead on the filehandle.)

       lvalue attribute ignored after the subroutine has been defined
	   (W misc) Making a subroutine an lvalue subroutine after it has been
	   defined by declaring the subroutine with a lvalue attribute is not
	   possible. To make the the subroutine a lvalue subroutine add the
	   lvalue attribute to the definition, or put the the declaration
	   before the definition.

       Lvalue subs returning %s not implemented yet
	   (F) Due to limitations in the current implementation, array and
	   hash values cannot be returned in subroutines used in lvalue
	   context.  See "Lvalue subroutines" in perlsub.

       Malformed integer in [] in  pack
	   (F) Between the  brackets enclosing a numeric repeat count only
	   digits are permitted.  See "pack" in perlfunc.

       Malformed integer in [] in unpack
	   (F) Between the  brackets enclosing a numeric repeat count only
	   digits are permitted.  See "pack" in perlfunc.

       Malformed PERLLIB_PREFIX
	   (F) An error peculiar to OS/2.  PERLLIB_PREFIX should be of the
	   form

	       prefix1;prefix2

	   or
	       prefix1 prefix2

	   with nonempty prefix1 and prefix2.  If "prefix1" is indeed a prefix
	   of a builtin library search path, prefix2 is substituted.  The
	   error may appear if components are not found, or are too long.  See
	   "PERLLIB_PREFIX" in perlos2.

       Malformed prototype for %s: %s
	   (F) You tried to use a function with a malformed prototype.	The
	   syntax of function prototypes is given a brief compile-time check
	   for obvious errors like invalid characters.	A more rigorous check
	   is run when the function is called.

       Malformed UTF-8 character (%s)
	   (S utf8) (F) Perl detected a string that didn't comply with UTF-8
	   encoding rules, even though it had the UTF8 flag on.

	   One possible cause is that you set the UTF8 flag yourself for data
	   that you thought to be in UTF-8 but it wasn't (it was for example
	   legacy 8-bit data). To guard against this, you can use
	   Encode::decode_utf8.

	   If you use the ":encoding(UTF-8)" PerlIO layer for input, invalid
	   byte sequences are handled gracefully, but if you use ":utf8", the
	   flag is set without validating the data, possibly resulting in this
	   error message.

	   See also "Handling Malformed Data" in Encode.

       Malformed UTF-16 surrogate
	   (F) Perl thought it was reading UTF-16 encoded character data but
	   while doing it Perl met a malformed Unicode surrogate.

       Malformed UTF-8 returned by \N
	   (F) The charnames handler returned malformed UTF-8.

       Malformed UTF-8 string in pack
	   (F) You tried to pack something that didn't comply with UTF-8
	   encoding rules and perl was unable to guess how to make more
	   progress.

       Malformed UTF-8 string in unpack
	   (F) You tried to unpack something that didn't comply with UTF-8
	   encoding rules and perl was unable to guess how to make more
	   progress.

       Malformed UTF-8 string in '%c' format in unpack
	   (F) You tried to unpack something that didn't comply with UTF-8
	   encoding rules and perl was unable to guess how to make more
	   progress.

       Maximal count of pending signals (%d) exceeded
	   (F) Perl aborted due to a too high number of signals pending. This
	   usually indicates that your operating system tried to deliver
	   signals too fast (with a very high priority), starving the perl
	   process from resources it would need to reach a point where it can
	   process signals safely. (See "Deferred Signals (Safe Signals)" in
	   perlipc.)

       %s matches null string many times in regex; marked by <-- HERE in m/%s/
	   (W regexp) The pattern you've specified would be an infinite loop
	   if the regular expression engine didn't specifically check for
	   that.  The <-- HERE shows in the regular expression about where the
	   problem was discovered.  See perlre.

       "%s" may clash with future reserved word
	   (W) This warning may be due to running a perl5 script through a
	   perl4 interpreter, especially if the word that is being warned
	   about is "use" or "my".

       % may not be used in pack
	   (F) You can't pack a string by supplying a checksum, because the
	   checksumming process loses information, and you can't go the other
	   way.	 See "unpack" in perlfunc.

       Method for operation %s not found in package %s during blessing
	   (F) An attempt was made to specify an entry in an overloading table
	   that doesn't resolve to a valid subroutine.	See overload.

       Method %s not permitted
	   See Server error.

       Might be a runaway multi-line %s string starting on line %d
	   (S) An advisory indicating that the previous error may have been
	   caused by a missing delimiter on a string or pattern, because it
	   eventually ended earlier on the current line.

       Misplaced _ in number
	   (W syntax) An underscore (underbar) in a numeric constant did not
	   separate two digits.

       Missing argument in %s
	   (W uninitialized) A printf-type format required more arguments than
	   were supplied.

       Missing argument to -%c
	   (F) The argument to the indicated command line switch must follow
	   immediately after the switch, without intervening spaces.

       Missing braces on \N{}
	   (F) Wrong syntax of character name literal "\N{charname}" within
	   double-quotish context.  This can also happen when there is a space
	   (or comment) between the "\N" and the "{" in a regex with the "/x"
	   modifier.  This modifier does not change the requirement that the
	   brace immediately follow the "\N".

       Missing comma after first argument to %s function
	   (F) While certain functions allow you to specify a filehandle or an
	   "indirect object" before the argument list, this ain't one of them.

       Missing command in piped open
	   (W pipe) You used the "open(FH, "| command")" or "open(FH, "command
	   |")" construction, but the command was missing or blank.

       Missing control char name in \c
	   (F) A double-quoted string ended with "\c", without the required
	   control character name.

       Missing name in "my sub"
	   (F) The reserved syntax for lexically scoped subroutines requires
	   that they have a name with which they can be found.

       Missing $ on loop variable
	   (F) Apparently you've been programming in csh too much.  Variables
	   are always mentioned with the $ in Perl, unlike in the shells,
	   where it can vary from one line to the next.

       (Missing operator before %s?)
	   (S syntax) This is an educated guess made in conjunction with the
	   message "%s found where operator expected".	Often the missing
	   operator is a comma.

       Missing right brace on %s
	   (F) Missing right brace in "\x{...}", "\p{...}", "\P{...}", or
	   "\N{...}".

       Missing right brace on \\N{} or unescaped left brace after \\N
	   (F) "\N" has two meanings.

	   The traditional one has it followed by a name enclosed in braces,
	   meaning the character (or sequence of characters) given by that
	   name.  Thus "\N{ASTERISK}" is another way of writing "*", valid in
	   both double-quoted strings and regular expression patterns.	In
	   patterns, it doesn't have the meaning an unescaped "*" does.

	   Starting in Perl 5.12.0, "\N" also can have an additional meaning
	   (only) in patterns, namely to match a non-newline character.	 (This
	   is short for "[^\n]", and like "." but is not affected by the "/s"
	   regex modifier.)

	   This can lead to some ambiguities.  When "\N" is not followed
	   immediately by a left brace, Perl assumes the "[^\n]" meaning.
	   Also, if the braces form a valid quantifier such as "\N{3}" or
	   "\N{5,}", Perl assumes that this means to match the given quantity
	   of non-newlines (in these examples, 3; and 5 or more,
	   respectively).  In all other case, where there is a "\N{" and a
	   matching "}", Perl assumes that a character name is desired.

	   However, if there is no matching "}", Perl doesn't know if it was
	   mistakenly omitted, or if "[^\n]{" was desired, and raises this
	   error.  If you meant the former, add the right brace; if you meant
	   the latter, escape the brace with a backslash, like so: "\N\{"

       Missing right curly or square bracket
	   (F) The lexer counted more opening curly or square brackets than
	   closing ones.  As a general rule, you'll find it's missing near the
	   place you were last editing.

       (Missing semicolon on previous line?)
	   (S syntax) This is an educated guess made in conjunction with the
	   message "%s found where operator expected".	Don't automatically
	   put a semicolon on the previous line just because you saw this
	   message.

       Modification of a read-only value attempted
	   (F) You tried, directly or indirectly, to change the value of a
	   constant.  You didn't, of course, try "2 = 1", because the compiler
	   catches that.  But an easy way to do the same thing is:

	       sub mod { $_[0] = 1 }
	       mod(2);

	   Another way is to assign to a substr() that's off the end of the
	   string.

	   Yet another way is to assign to a "foreach" loop VAR when VAR is
	   aliased to a constant in the look LIST:

		   $x = 1;
		   foreach my $n ($x, 2) {
		       $n *= 2; # modifies the $x, but fails on attempt to modify the 2
		   }

       Modification of non-creatable array value attempted, %s
	   (F) You tried to make an array value spring into existence, and the
	   subscript was probably negative, even counting from end of the
	   array backwards.

       Modification of non-creatable hash value attempted, %s
	   (P) You tried to make a hash value spring into existence, and it
	   couldn't be created for some peculiar reason.

       Module name must be constant
	   (F) Only a bare module name is allowed as the first argument to a
	   "use".

       Module name required with -%c option
	   (F) The "-M" or "-m" options say that Perl should load some module,
	   but you omitted the name of the module.  Consult perlrun for full
	   details about "-M" and "-m".

       More than one argument to '%s' open
	   (F) The "open" function has been asked to open multiple files. This
	   can happen if you are trying to open a pipe to a command that takes
	   a list of arguments, but have forgotten to specify a piped open
	   mode.  See "open" in perlfunc for details.

       msg%s not implemented
	   (F) You don't have System V message IPC on your system.

       Multidimensional syntax %s not supported
	   (W syntax) Multidimensional arrays aren't written like $foo[1,2,3].
	   They're written like $foo[1][2][3], as in C.

       '/' must follow a numeric type in unpack
	   (F) You had an unpack template that contained a '/', but this did
	   not follow some unpack specification producing a numeric value.
	   See "pack" in perlfunc.

       "my sub" not yet implemented
	   (F) Lexically scoped subroutines are not yet implemented.  Don't
	   try that yet.

       "%s" variable %s can't be in a package
	   (F) Lexically scoped variables aren't in a package, so it doesn't
	   make sense to try to declare one with a package qualifier on the
	   front.  Use local() if you want to localize a package variable.

       \\N in a character class must be a named character: \\N{...}
	   (F) The new (5.12) meaning of "\N" as "[^\n]" is not valid in a
	   bracketed character class, for the same reason that "." in a
	   character class loses its specialness: it matches almost
	   everything, which is probably not what you want.

       \\N{NAME} must be resolved by the lexer
	   (F) When compiling a regex pattern, an unresolved named character
	   or sequence was encountered.	 This can happen in any of several
	   ways that bypass the lexer, such as using single-quotish context,
	   or an extra backslash in double quotish:

	       $re = '\N{SPACE}';  # Wrong!
	       $re = "\\N{SPACE}"; # Wrong!
	       /$re/;

	   Instead, use double-quotes with a single backslash:

	       $re = "\N{SPACE}";  # ok
	       /$re/;

	   The lexer can be bypassed as well by creating the pattern from
	   smaller components:

	       $re = '\N';
	       /${re}{SPACE}/;	   # Wrong!

	   It's not a good idea to split a construct in the middle like this,
	   and it doesn't work here.  Instead use the solution above.

	   Finally, the message also can happen under the "/x" regex modifier
	   when the "\N" is separated by spaces from the "{", in which case,
	   remove the spaces.

	       /\N {SPACE}/x;	   # Wrong!
	       /\N{SPACE}/x;	   # ok

       Name "%s::%s" used only once: possible typo
	   (W once) Typographical errors often show up as unique variable
	   names.  If you had a good reason for having a unique name, then
	   just mention it again somehow to suppress the message.  The "our"
	   declaration is provided for this purpose.

	   NOTE: This warning detects symbols that have been used only once so
	   $c, @c, %c, *c, &c, sub c{}, c(), and c (the filehandle or format)
	   are considered the same; if a program uses $c only once but also
	   uses any of the others it will not trigger this warning.

       Invalid hexadecimal number in \\N{U+...}
	   (F) The character constant represented by "..." is not a valid
	   hexadecimal number.	Either it is empty, or you tried to use a
	   character other than 0 - 9 or A - F, a - f in a hexadecimal number.

       Negative '/' count in unpack
	   (F) The length count obtained from a length/code unpack operation
	   was negative.  See "pack" in perlfunc.

       Negative length
	   (F) You tried to do a read/write/send/recv operation with a buffer
	   length that is less than 0.	This is difficult to imagine.

       Negative offset to vec in lvalue context
	   (F) When "vec" is called in an lvalue context, the second argument
	   must be greater than or equal to zero.

       Nested quantifiers in regex; marked by <-- HERE in m/%s/
	   (F) You can't quantify a quantifier without intervening
	   parentheses. So things like ** or +* or ?* are illegal. The <--
	   HERE shows in the regular expression about where the problem was
	   discovered.

	   Note that the minimal matching quantifiers, "*?", "+?", and "??"
	   appear to be nested quantifiers, but aren't.	 See perlre.

       %s never introduced
	   (S internal) The symbol in question was declared but somehow went
	   out of scope before it could possibly have been used.

       next::method/next::can/maybe::next::method cannot find enclosing method
	   (F) "next::method" needs to be called within the context of a real
	   method in a real package, and it could not find such a context.
	   See mro.

       No %s allowed while running setuid
	   (F) Certain operations are deemed to be too insecure for a setuid
	   or setgid script to even be allowed to attempt.  Generally speaking
	   there will be another way to do what you want that is, if not
	   secure, at least securable.	See perlsec.

       No comma allowed after %s
	   (F) A list operator that has a filehandle or "indirect object" is
	   not allowed to have a comma between that and the following
	   arguments.  Otherwise it'd be just another one of the arguments.

	   One possible cause for this is that you expected to have imported a
	   constant to your name space with use or import while no such
	   importing took place, it may for example be that your operating
	   system does not support that particular constant. Hopefully you did
	   use an explicit import list for the constants you expect to see,
	   please see "use" in perlfunc and "import" in perlfunc. While an
	   explicit import list would probably have caught this error earlier
	   it naturally does not remedy the fact that your operating system
	   still does not support that constant. Maybe you have a typo in the
	   constants of the symbol import list of use or import or in the
	   constant name at the line where this error was triggered?

       No command into which to pipe on command line
	   (F) An error peculiar to VMS.  Perl handles its own command line
	   redirection, and found a '|' at the end of the command line, so it
	   doesn't know where you want to pipe the output from this command.

       No DB::DB routine defined
	   (F) The currently executing code was compiled with the -d switch,
	   but for some reason the  current debugger (e.g. perl5db.pl or a
	   "Devel::" module) didn't define a routine to be called at the
	   beginning of each statement.

       No dbm on this machine
	   (P) This is counted as an internal error, because every machine
	   should supply dbm nowadays, because Perl comes with SDBM.  See
	   SDBM_File.

       No DB::sub routine defined
	   (F) The currently executing code was compiled with the -d switch,
	   but for some reason the current debugger (e.g. perl5db.pl or a
	   "Devel::" module) didn't define a "DB::sub" routine to be called at
	   the beginning of each ordinary subroutine call.

       No -e allowed in setuid scripts
	   (F) A setuid script can't be specified by the user.

       No error file after 2> or 2>> on command line
	   (F) An error peculiar to VMS.  Perl handles its own command line
	   redirection, and found a '2>' or a '2>>' on the command line, but
	   can't find the name of the file to which to write data destined for
	   stderr.

       No group ending character '%c' found in template
	   (F) A pack or unpack template has an opening '(' or '[' without its
	   matching counterpart. See "pack" in perlfunc.

       No input file after < on command line
	   (F) An error peculiar to VMS.  Perl handles its own command line
	   redirection, and found a '<' on the command line, but can't find
	   the name of the file from which to read data for stdin.

       No #! line
	   (F) The setuid emulator requires that scripts have a well-formed #!
	   line even on machines that don't support the #! construct.

       No next::method '%s' found for %s
	   (F) "next::method" found no further instances of this method name
	   in the remaining packages of the MRO of this class.	If you don't
	   want it throwing an exception, use "maybe::next::method" or
	   "next::can". See mro.

       "no" not allowed in expression
	   (F) The "no" keyword is recognized and executed at compile time,
	   and returns no useful value.	 See perlmod.

       No output file after > on command line
	   (F) An error peculiar to VMS.  Perl handles its own command line
	   redirection, and found a lone '>' at the end of the command line,
	   so it doesn't know where you wanted to redirect stdout.

       No output file after > or >> on command line
	   (F) An error peculiar to VMS.  Perl handles its own command line
	   redirection, and found a '>' or a '>>' on the command line, but
	   can't find the name of the file to which to write data destined for
	   stdout.

       No package name allowed for variable %s in "our"
	   (F) Fully qualified variable names are not allowed in "our"
	   declarations, because that doesn't make much sense under existing
	   semantics.  Such syntax is reserved for future extensions.

       No Perl script found in input
	   (F) You called "perl -x", but no line was found in the file
	   beginning with #! and containing the word "perl".

       No setregid available
	   (F) Configure didn't find anything resembling the setregid() call
	   for your system.

       No setreuid available
	   (F) Configure didn't find anything resembling the setreuid() call
	   for your system.

       No %s specified for -%c
	   (F) The indicated command line switch needs a mandatory argument,
	   but you haven't specified one.

       No such class field "%s" in variable %s of type %s
	   (F) You tried to access a key from a hash through the indicated
	   typed variable but that key is not allowed by the package of the
	   same type.  The indicated package has restricted the set of allowed
	   keys using the fields pragma.

       No such class %s
	   (F) You provided a class qualifier in a "my", "our" or "state"
	   declaration, but this class doesn't exist at this point in your
	   program.

       No such hook: %s
	   (F) You specified a signal hook that was not recognized by Perl.
	   Currently, Perl accepts "__DIE__" and "__WARN__" as valid signal
	   hooks

       No such pipe open
	   (P) An error peculiar to VMS.  The internal routine my_pclose()
	   tried to close a pipe which hadn't been opened.  This should have
	   been caught earlier as an attempt to close an unopened filehandle.

       No such signal: SIG%s
	   (W signal) You specified a signal name as a subscript to %SIG that
	   was not recognized.	Say "kill -l" in your shell to see the valid
	   signal names on your system.

       Not a CODE reference
	   (F) Perl was trying to evaluate a reference to a code value (that
	   is, a subroutine), but found a reference to something else instead.
	   You can use the ref() function to find out what kind of ref it
	   really was.	See also perlref.

       Not a format reference
	   (F) I'm not sure how you managed to generate a reference to an
	   anonymous format, but this indicates you did, and that it didn't
	   exist.

       Not a GLOB reference
	   (F) Perl was trying to evaluate a reference to a "typeglob" (that
	   is, a symbol table entry that looks like *foo), but found a
	   reference to something else instead.	 You can use the ref()
	   function to find out what kind of ref it really was.	 See perlref.

       Not a HASH reference
	   (F) Perl was trying to evaluate a reference to a hash value, but
	   found a reference to something else instead.	 You can use the ref()
	   function to find out what kind of ref it really was.	 See perlref.

       Not an ARRAY reference
	   (F) Perl was trying to evaluate a reference to an array value, but
	   found a reference to something else instead.	 You can use the ref()
	   function to find out what kind of ref it really was.	 See perlref.

       Not a perl script
	   (F) The setuid emulator requires that scripts have a well-formed #!
	   line even on machines that don't support the #! construct.  The
	   line must mention perl.

       Not a SCALAR reference
	   (F) Perl was trying to evaluate a reference to a scalar value, but
	   found a reference to something else instead.	 You can use the ref()
	   function to find out what kind of ref it really was.	 See perlref.

       Not a subroutine reference
	   (F) Perl was trying to evaluate a reference to a code value (that
	   is, a subroutine), but found a reference to something else instead.
	   You can use the ref() function to find out what kind of ref it
	   really was.	See also perlref.

       Not a subroutine reference in overload table
	   (F) An attempt was made to specify an entry in an overloading table
	   that doesn't somehow point to a valid subroutine.  See overload.

       Not enough arguments for %s
	   (F) The function requires more arguments than you specified.

       Not enough format arguments
	   (W syntax) A format specified more picture fields than the next
	   line supplied.  See perlform.

       %s: not found
	   (A) You've accidentally run your script through the Bourne shell
	   instead of Perl.  Check the #! line, or manually feed your script
	   into Perl yourself.

       no UTC offset information; assuming local time is UTC
	   (S) A warning peculiar to VMS.  Perl was unable to find the local
	   timezone offset, so it's assuming that local system time is
	   equivalent to UTC.  If it's not, define the logical name
	   SYS$TIMEZONE_DIFFERENTIAL to translate to the number of seconds
	   which need to be added to UTC to get local time.

       Non-string passed as bitmask
	   (W misc) A number has been passed as a bitmask argument to
	   select().  Use the vec() function to construct the file descriptor
	   bitmasks for select. See "select" in perlfunc

       Null filename used
	   (F) You can't require the null filename, especially because on many
	   machines that means the current directory!  See "require" in
	   perlfunc.

       NULL OP IN RUN
	   (P debugging) Some internal routine called run() with a null opcode
	   pointer.

       Null picture in formline
	   (F) The first argument to formline must be a valid format picture
	   specification.  It was found to be empty, which probably means you
	   supplied it an uninitialized value.	See perlform.

       Null realloc
	   (P) An attempt was made to realloc NULL.

       NULL regexp argument
	   (P) The internal pattern matching routines blew it big time.

       NULL regexp parameter
	   (P) The internal pattern matching routines are out of their gourd.

       Number too long
	   (F) Perl limits the representation of decimal numbers in programs
	   to about 250 characters.  You've exceeded that length.  Future
	   versions of Perl are likely to eliminate this arbitrary limitation.
	   In the meantime, try using scientific notation (e.g. "1e6" instead
	   of "1_000_000").

       Octal number in vector unsupported
	   (F) Numbers with a leading 0 are not currently allowed in vectors.
	   The octal number interpretation of such numbers may be supported in
	   a future version.

       Octal number > 037777777777 non-portable
	   (W portable) The octal number you specified is larger than 2**32-1
	   (4294967295) and therefore non-portable between systems.  See
	   perlport for more on portability concerns.

	   See also perlport for writing portable code.

       Odd number of arguments for overload::constant
	   (W overload) The call to overload::constant contained an odd number
	   of arguments. The arguments should come in pairs.

       Odd number of elements in anonymous hash
	   (W misc) You specified an odd number of elements to initialize a
	   hash, which is odd, because hashes come in key/value pairs.

       Odd number of elements in hash assignment
	   (W misc) You specified an odd number of elements to initialize a
	   hash, which is odd, because hashes come in key/value pairs.

       Offset outside string
	   (F, W layer) You tried to do a read/write/send/recv/seek operation
	   with an offset pointing outside the buffer.	This is difficult to
	   imagine.  The sole exceptions to this are that zero padding will
	   take place when going past the end of the string when either
	   "sysread()"ing a file, or when seeking past the end of a scalar
	   opened for I/O (in anticipation of future reads and to imitate the
	   behaviour with real files).

       %s() on unopened %s
	   (W unopened) An I/O operation was attempted on a filehandle that
	   was never initialized.  You need to do an open(), a sysopen(), or a
	   socket() call, or call a constructor from the FileHandle package.

       -%s on unopened filehandle %s
	   (W unopened) You tried to invoke a file test operator on a
	   filehandle that isn't open.	Check your control flow.  See also
	   "-X" in perlfunc.

       oops: oopsAV
	   (S internal) An internal warning that the grammar is screwed up.

       oops: oopsHV
	   (S internal) An internal warning that the grammar is screwed up.

       Opening dirhandle %s also as a file
	   (W io deprecated) You used open() to associate a filehandle to a
	   symbol (glob or scalar) that already holds a dirhandle.  Although
	   legal, this idiom might render your code confusing and is
	   deprecated.

       Opening filehandle %s also as a directory
	   (W io deprecated) You used opendir() to associate a dirhandle to a
	   symbol (glob or scalar) that already holds a filehandle.  Although
	   legal, this idiom might render your code confusing and is
	   deprecated.

       Operation "%s": no method found, %s
	   (F) An attempt was made to perform an overloaded operation for
	   which no handler was defined.  While some handlers can be
	   autogenerated in terms of other handlers, there is no default
	   handler for any operation, unless "fallback" overloading key is
	   specified to be true.  See overload.

       Operator or semicolon missing before %s
	   (S ambiguous) You used a variable or subroutine call where the
	   parser was expecting an operator.  The parser has assumed you
	   really meant to use an operator, but this is highly likely to be
	   incorrect.  For example, if you say "*foo *foo" it will be
	   interpreted as if you said "*foo * 'foo'".

       "our" variable %s redeclared
	   (W misc) You seem to have already declared the same global once
	   before in the current lexical scope.

       Out of memory!
	   (X) The malloc() function returned 0, indicating there was
	   insufficient remaining memory (or virtual memory) to satisfy the
	   request.  Perl has no option but to exit immediately.

	   At least in Unix you may be able to get past this by increasing
	   your process datasize limits: in csh/tcsh use "limit" and "limit
	   datasize n" (where "n" is the number of kilobytes) to check the
	   current limits and change them, and in ksh/bash/zsh use "ulimit -a"
	   and "ulimit -d n", respectively.

       Out of memory during %s extend
	   (X) An attempt was made to extend an array, a list, or a string
	   beyond the largest possible memory allocation.

       Out of memory during "large" request for %s
	   (F) The malloc() function returned 0, indicating there was
	   insufficient remaining memory (or virtual memory) to satisfy the
	   request. However, the request was judged large enough (compile-time
	   default is 64K), so a possibility to shut down by trapping this
	   error is granted.

       Out of memory during request for %s
	   (X|F) The malloc() function returned 0, indicating there was
	   insufficient remaining memory (or virtual memory) to satisfy the
	   request.

	   The request was judged to be small, so the possibility to trap it
	   depends on the way perl was compiled.  By default it is not
	   trappable.  However, if compiled for this, Perl may use the
	   contents of $^M as an emergency pool after die()ing with this
	   message.  In this case the error is trappable once, and the error
	   message will include the line and file where the failed request
	   happened.

       Out of memory during ridiculously large request
	   (F) You can't allocate more than 2^31+"small amount" bytes.	This
	   error is most likely to be caused by a typo in the Perl program.
	   e.g., $arr[time] instead of $arr[$time].

       Out of memory for yacc stack
	   (F) The yacc parser wanted to grow its stack so it could continue
	   parsing, but realloc() wouldn't give it more memory, virtual or
	   otherwise.

       '.' outside of string in pack
	   (F) The argument to a '.' in your template tried to move the
	   working position to before the start of the packed string being
	   built.

       '@' outside of string in unpack
	   (F) You had a template that specified an absolute position outside
	   the string being unpacked.  See "pack" in perlfunc.

       '@' outside of string with malformed UTF-8 in unpack
	   (F) You had a template that specified an absolute position outside
	   the string being unpacked. The string being unpacked was also
	   invalid UTF-8. See "pack" in perlfunc.

       Overloaded dereference did not return a reference
	   (F) An object with an overloaded dereference operator was
	   dereferenced, but the overloaded operation did not return a
	   reference. See overload.

       Overloaded qr did not return a REGEXP
	   (F) An object with a "qr" overload was used as part of a match, but
	   the overloaded operation didn't return a compiled regexp. See
	   overload.

       %s package attribute may clash with future reserved word: %s
	   (W reserved) A lowercase attribute name was used that had a
	   package-specific handler.  That name might have a meaning to Perl
	   itself some day, even though it doesn't yet.	 Perhaps you should
	   use a mixed-case attribute name, instead.  See attributes.

       pack/unpack repeat count overflow
	   (F) You can't specify a repeat count so large that it overflows
	   your signed integers.  See "pack" in perlfunc.

       page overflow
	   (W io) A single call to write() produced more lines than can fit on
	   a page.  See perlform.

       panic: %s
	   (P) An internal error.

       panic: attempt to call %s in %s
	   (P) One of the file test operators entered a code branch that calls
	   an ACL related-function, but that function is not available on this
	   platform.  Earlier checks mean that it should not be possible to
	   enter this branch on this platform.

       panic: ck_grep
	   (P) Failed an internal consistency check trying to compile a grep.

       panic: ck_split
	   (P) Failed an internal consistency check trying to compile a split.

       panic: corrupt saved stack index
	   (P) The savestack was requested to restore more localized values
	   than there are in the savestack.

       panic: del_backref
	   (P) Failed an internal consistency check while trying to reset a
	   weak reference.

       panic: Devel::DProf inconsistent subroutine return
	   (P) Devel::DProf called a subroutine that exited using goto(LABEL),
	   last(LABEL) or next(LABEL). Leaving that way a subroutine called
	   from an XSUB will lead very probably to a crash of the interpreter.
	   This is a bug that will hopefully one day get fixed.

       panic: die %s
	   (P) We popped the context stack to an eval context, and then
	   discovered it wasn't an eval context.

       panic: do_subst
	   (P) The internal pp_subst() routine was called with invalid
	   operational data.

       panic: do_trans_%s
	   (P) The internal do_trans routines were called with invalid
	   operational data.

       panic: fold_constants JMPENV_PUSH returned %d
	   (P) While attempting folding constants an exception other than an
	   "eval" failure was caught.

       panic: frexp
	   (P) The library function frexp() failed, making printf("%f")
	   impossible.

       panic: goto
	   (P) We popped the context stack to a context with the specified
	   label, and then discovered it wasn't a context we know how to do a
	   goto in.

       panic: hfreeentries failed to free hash
	   (P) The internal routine used to clear a hashes entries tried
	   repeatedly, but each time something added more entries to the hash.
	   Most likely the hash contains an object with a reference back to
	   the hash and a destructor that adds a new object to the hash.

       panic: INTERPCASEMOD
	   (P) The lexer got into a bad state at a case modifier.

       panic: INTERPCONCAT
	   (P) The lexer got into a bad state parsing a string with brackets.

       panic: kid popen errno read
	   (F) forked child returned an incomprehensible message about its
	   errno.

       panic: last
	   (P) We popped the context stack to a block context, and then
	   discovered it wasn't a block context.

       panic: leave_scope clearsv
	   (P) A writable lexical variable became read-only somehow within the
	   scope.

       panic: leave_scope inconsistency
	   (P) The savestack probably got out of sync.	At least, there was an
	   invalid enum on the top of it.

       panic: magic_killbackrefs
	   (P) Failed an internal consistency check while trying to reset all
	   weak references to an object.

       panic: malloc
	   (P) Something requested a negative number of bytes of malloc.

       panic: memory wrap
	   (P) Something tried to allocate more memory than possible.

       panic: pad_alloc
	   (P) The compiler got confused about which scratch pad it was
	   allocating and freeing temporaries and lexicals from.

       panic: pad_free curpad
	   (P) The compiler got confused about which scratch pad it was
	   allocating and freeing temporaries and lexicals from.

       panic: pad_free po
	   (P) An invalid scratch pad offset was detected internally.

       panic: pad_reset curpad
	   (P) The compiler got confused about which scratch pad it was
	   allocating and freeing temporaries and lexicals from.

       panic: pad_sv po
	   (P) An invalid scratch pad offset was detected internally.

       panic: pad_swipe curpad
	   (P) The compiler got confused about which scratch pad it was
	   allocating and freeing temporaries and lexicals from.

       panic: pad_swipe po
	   (P) An invalid scratch pad offset was detected internally.

       panic: pp_iter
	   (P) The foreach iterator got called in a non-loop context frame.

       panic: pp_match%s
	   (P) The internal pp_match() routine was called with invalid
	   operational data.

       panic: pp_split
	   (P) Something terrible went wrong in setting up for the split.

       panic: realloc
	   (P) Something requested a negative number of bytes of realloc.

       panic: restartop
	   (P) Some internal routine requested a goto (or something like it),
	   and didn't supply the destination.

       panic: return
	   (P) We popped the context stack to a subroutine or eval context,
	   and then discovered it wasn't a subroutine or eval context.

       panic: scan_num
	   (P) scan_num() got called on something that wasn't a number.

       panic: sv_chop %s
	   (P) The sv_chop() routine was passed a position that is not within
	   the scalar's string buffer.

       panic: sv_insert
	   (P) The sv_insert() routine was told to remove more string than
	   there was string.

       panic: top_env
	   (P) The compiler attempted to do a goto, or something weird like
	   that.

       panic: unimplemented op %s (#%d) called
	   (P) The compiler is screwed up and attempted to use an op that
	   isn't permitted at run time.

       panic: utf16_to_utf8: odd bytelen
	   (P) Something tried to call utf16_to_utf8 with an odd (as opposed
	   to even) byte length.

       panic: utf16_to_utf8_reversed: odd bytelen
	   (P) Something tried to call utf16_to_utf8_reversed with an odd (as
	   opposed to even) byte length.

       panic: yylex
	   (P) The lexer got into a bad state while processing a case
	   modifier.

       Pattern subroutine nesting without pos change exceeded limit in regex;
	    marked by <-- HERE in m/%s/
	   (F) You used a pattern that uses too many nested subpattern calls
	   without consuming any text. Restructure the pattern so text is
	   consumed before the nesting limit is exceeded.

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.

       Parentheses missing around "%s" list
	   (W parenthesis) You said something like

	       my $foo, $bar = @_;

	   when you meant

	       my ($foo, $bar) = @_;

	   Remember that "my", "our", "local" and "state" bind tighter than
	   comma.

       "-p" destination: %s
	   (F) An error occurred during the implicit output invoked by the
	   "-p" command-line switch.  (This output goes to STDOUT unless
	   you've redirected it with select().)

       (perhaps you forgot to load "%s"?)
	   (F) This is an educated guess made in conjunction with the message
	   "Can't locate object method \"%s\" via package \"%s\"".  It often
	   means that a method requires a package that has not been loaded.

       Perl_my_%s() not available
	   (F) Your platform has very uncommon byte-order and integer size, so
	   it was not possible to set up some or all fixed-width byte-order
	   conversion functions.  This is only a problem when you're using the
	   '<' or '>' modifiers in (un)pack templates.	See "pack" in
	   perlfunc.

       Perl_pmflag() is deprecated, and will be removed from the XS API
	   (D deprecated) XS code called the C function "Perl_pmflag". This
	   was part of Perl's listed public API for extending or embedding the
	   perl interpreter. It has now been removed from the public API, and
	   will be removed in a future release, hence XS code should be
	   re-written not to use it.

       Perl %s requiredO-this is only version %s, stopped
	   (F) The module in question uses features of a version of Perl more
	   recent than the currently running version.  How long has it been
	   since you upgraded, anyway?	See "require" in perlfunc.

       PERL_SH_DIR too long
	   (F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find
	   the "sh"-shell in.  See "PERL_SH_DIR" in perlos2.

       PERL_SIGNALS illegal: "%s"
	   See "PERL_SIGNALS" in perlrun for legal values.

       perl: warning: Setting locale failed.
	   (S) The whole warning message will look something like:

		   perl: warning: Setting locale failed.
		   perl: warning: Please check that your locale settings:
			   LC_ALL = "En_US",
			   LANG = (unset)
		       are supported and installed on your system.
		   perl: warning: Falling back to the standard locale ("C").

	   Exactly what were the failed locale settings varies.	 In the above
	   the settings were that the LC_ALL was "En_US" and the LANG had no
	   value.  This error means that Perl detected that you and/or your
	   operating system supplier and/or system administrator have set up
	   the so-called locale system but Perl could not use those settings.
	   This was not dead serious, fortunately: there is a "default locale"
	   called "C" that Perl can and will use, the script will be run.
	   Before you really fix the problem, however, you will get the same
	   error message each time you run Perl.  How to really fix the
	   problem can be found in perllocale section LOCALE PROBLEMS.

       pid %x not a child
	   (W exec) A warning peculiar to VMS.	Waitpid() was asked to wait
	   for a process which isn't a subprocess of the current process.
	   While this is fine from VMS' perspective, it's probably not what
	   you intended.

       'P' must have an explicit size in unpack
	   (F) The unpack format P must have an explicit size, not "*".

       POSIX class [:%s:] unknown in regex; marked by <-- HERE in m/%s/
	   (F) The class in the character class [: :] syntax is unknown.  The
	   <-- HERE shows in the regular expression about where the problem
	   was discovered.  Note that the POSIX character classes do not have
	   the "is" prefix the corresponding C interfaces have: in other
	   words, it's "[[:print:]]", not "isprint".  See perlre.

       POSIX getpgrp can't take an argument
	   (F) Your system has POSIX getpgrp(), which takes no argument,
	   unlike the BSD version, which takes a pid.

       POSIX syntax [%s] belongs inside character classes in regex; marked by
	    <-- HERE in m/%s/
	   (W regexp) The character class constructs [: :], [= =], and [. .]
	   go inside character classes, the [] are part of the construct, for
	   example: /[012[:alpha:]345]/.  Note that [= =] and [. .] are not
	   currently implemented; they are simply placeholders for future
	   extensions and will cause fatal errors.  The <-- HERE shows in the
	   regular expression about where the problem was discovered.  See
	   perlre.

       POSIX syntax [. .] is reserved for future extensions in regex; marked
	    by <-- HERE in m/%s/
	   (F regexp) Within regular expression character classes ([]) the
	   syntax beginning with "[." and ending with ".]" is reserved for
	   future extensions.  If you need to represent those character
	   sequences inside a regular expression character class, just quote
	   the square brackets with the backslash: "\[." and ".\]".  The <--
	   HERE shows in the regular expression about where the problem was
	   discovered.	See perlre.

       POSIX syntax [= =] is reserved for future extensions in regex; marked
	    by <-- HERE in m/%s/
	   (F) Within regular expression character classes ([]) the syntax
	   beginning with "[=" and ending with "=]" is reserved for future
	   extensions.	If you need to represent those character sequences
	   inside a regular expression character class, just quote the square
	   brackets with the backslash: "\[=" and "=\]".  The <-- HERE shows
	   in the regular expression about where the problem was discovered.
	   See perlre.

       Possible attempt to put comments in qw() list
	   (W qw) qw() lists contain items separated by whitespace; as with
	   literal strings, comment characters are not ignored, but are
	   instead treated as literal data.  (You may have used different
	   delimiters than the parentheses shown here; braces are also
	   frequently used.)

	   You probably wrote something like this:

	       @list = qw(
		   a # a comment
		   b # another comment
	       );

	   when you should have written this:

	       @list = qw(
		   a
		   b
	       );

	   If you really want comments, build your list the old-fashioned way,
	   with quotes and commas:

	       @list = (
		   'a',	   # a comment
		   'b',	   # another comment
	       );

       Possible attempt to separate words with commas
	   (W qw) qw() lists contain items separated by whitespace; therefore
	   commas aren't needed to separate the items.	(You may have used
	   different delimiters than the parentheses shown here; braces are
	   also frequently used.)

	   You probably wrote something like this:

	       qw! a, b, c !;

	   which puts literal commas into some of the list items.  Write it
	   without commas if you don't want them to appear in your data:

	       qw! a b c !;

       Possible memory corruption: %s overflowed 3rd argument
	   (F) An ioctl() or fcntl() returned more than Perl was bargaining
	   for.	 Perl guesses a reasonable buffer size, but puts a sentinel
	   byte at the end of the buffer just in case.	This sentinel byte got
	   clobbered, and Perl assumes that memory is now corrupted.  See
	   "ioctl" in perlfunc.

       Possible precedence problem on bitwise %c operator
	   (W precedence) Your program uses a bitwise logical operator in
	   conjunction with a numeric comparison operator, like this :

	       if ($x & $y == 0) { ... }

	   This expression is actually equivalent to "$x & ($y == 0)", due to
	   the higher precedence of "==". This is probably not what you want.
	   (If you really meant to write this, disable the warning, or,
	   better, put the parentheses explicitly and write "$x & ($y == 0)").

       Possible unintended interpolation of %s in string
	   (W ambiguous) You said something like `@foo' in a double-quoted
	   string but there was no array @foo in scope at the time. If you
	   wanted a literal @foo, then write it as \@foo; otherwise find out
	   what happened to the array you apparently lost track of.

       Possible unintended interpolation of $\ in regex
	   (W ambiguous) You said something like "m/$\/" in a regex.  The
	   regex "m/foo$\s+bar/m" translates to: match the word 'foo', the
	   output record separator (see "$\" in perlvar) and the letter 's'
	   (one time or more) followed by the word 'bar'.

	   If this is what you intended then you can silence the warning by
	   using "m/${\}/" (for example: "m/foo${\}s+bar/").

	   If instead you intended to match the word 'foo' at the end of the
	   line followed by whitespace and the word 'bar' on the next line
	   then you can use "m/$(?)\/" (for example: "m/foo$(?)\s+bar/").

       Precedence problem: open %s should be open(%s)
	   (S precedence) The old irregular construct

	       open FOO || die;

	   is now misinterpreted as

	       open(FOO || die);

	   because of the strict regularization of Perl 5's grammar into unary
	   and list operators.	(The old open was a little of both.)  You must
	   put parentheses around the filehandle, or use the new "or" operator
	   instead of "||".

       Premature end of script headers
	   See Server error.

       printf() on closed filehandle %s
	   (W closed) The filehandle you're writing to got itself closed
	   sometime before now.	 Check your control flow.

       print() on closed filehandle %s
	   (W closed) The filehandle you're printing on got itself closed
	   sometime before now.	 Check your control flow.

       Process terminated by SIG%s
	   (W) This is a standard message issued by OS/2 applications, while
	   *nix applications die in silence.  It is considered a feature of
	   the OS/2 port.  One can easily disable this by appropriate
	   sighandlers, see "Signals" in perlipc.  See also "Process
	   terminated by SIGTERM/SIGINT" in perlos2.

       Prototype after '%c' for %s : %s
	   (W illegalproto) A character follows % or @ in a prototype. This is
	   useless, since % and @ gobble the rest of the subroutine arguments.

       Prototype mismatch: %s vs %s
	   (S prototype) The subroutine being declared or defined had
	   previously been declared or defined with a different function
	   prototype.

       Prototype not terminated
	   (F) You've omitted the closing parenthesis in a function prototype
	   definition.

       Quantifier follows nothing in regex; marked by <-- HERE in m/%s/
	   (F) You started a regular expression with a quantifier. Backslash
	   it if you meant it literally. The <-- HERE shows in the regular
	   expression about where the problem was discovered. See perlre.

       Quantifier in {,} bigger than %d in regex; marked by <-- HERE in m/%s/
	   (F) There is currently a limit to the size of the min and max
	   values of the {min,max} construct. The <-- HERE shows in the
	   regular expression about where the problem was discovered. See
	   perlre.

       Quantifier unexpected on zero-length expression; marked by <-- HERE in
	    m/%s/
	   (W regexp) You applied a regular expression quantifier in a place
	   where it makes no sense, such as on a zero-width assertion.	Try
	   putting the quantifier inside the assertion instead.	 For example,
	   the way to match "abc" provided that it is followed by three
	   repetitions of "xyz" is "/abc(?=(?:xyz){3})/", not
	   "/abc(?=xyz){3}/".

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.

       Range iterator outside integer range
	   (F) One (or both) of the numeric arguments to the range operator
	   ".." are outside the range which can be represented by integers
	   internally.	One possible workaround is to force Perl to use
	   magical string increment by prepending "0" to your numbers.

       readdir() attempted on invalid dirhandle %s
	   (W io) The dirhandle you're reading from is either closed or not
	   really a dirhandle.	Check your control flow.

       readline() on closed filehandle %s
	   (W closed) The filehandle you're reading from got itself closed
	   sometime before now.	 Check your control flow.

       read() on closed filehandle %s
	   (W closed) You tried to read from a closed filehandle.

       read() on unopened filehandle %s
	   (W unopened) You tried to read from a filehandle that was never
	   opened.

       Reallocation too large: %lx
	   (F) You can't allocate more than 64K on an MS-DOS machine.

       realloc() of freed memory ignored
	   (S malloc) An internal routine called realloc() on something that
	   had already been freed.

       Recompile perl with -DDEBUGGING to use -D switch
	   (F debugging) You can't use the -D option unless the code to
	   produce the desired output is compiled into Perl, which entails
	   some overhead, which is why it's currently left out of your copy.

       Recursive inheritance detected in package '%s'
	   (F) While calculating the method resolution order (MRO) of a
	   package, Perl believes it found an infinite loop in the @ISA
	   hierarchy.  This is a crude check that bails out after 100 levels
	   of @ISA depth.

       Recursive inheritance detected while looking for method %s
	   (F) More than 100 levels of inheritance were encountered while
	   invoking a method.  Probably indicates an unintended loop in your
	   inheritance hierarchy.

       Reference found where even-sized list expected
	   (W misc) You gave a single reference where Perl was expecting a
	   list with an even number of elements (for assignment to a hash).
	   This usually means that you used the anon hash constructor when you
	   meant to use parens. In any case, a hash requires key/value pairs.

	       %hash = { one => 1, two => 2, };	   # WRONG
	       %hash = [ qw/ an anon array / ];	   # WRONG
	       %hash = ( one => 1, two => 2, );	   # right
	       %hash = qw( one 1 two 2 );		   # also fine

       Reference is already weak
	   (W misc) You have attempted to weaken a reference that is already
	   weak.  Doing so has no effect.

       Reference miscount in sv_replace()
	   (W internal) The internal sv_replace() function was handed a new SV
	   with a reference count of other than 1.

       Reference to invalid group 0
	   (F) You used "\g0" or similar in a regular expression. You may
	   refer to capturing parentheses only with strictly positive integers
	   (normal backreferences) or with strictly negative integers
	   (relative backreferences), but using 0 does not make sense.

       Reference to nonexistent group in regex; marked by <-- HERE in m/%s/
	   (F) You used something like "\7" in your regular expression, but
	   there are not at least seven sets of capturing parentheses in the
	   expression. If you wanted to have the character with value 7
	   inserted into the regular expression, prepend a zero to make the
	   number at least two digits: "\07"

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.

       Reference to nonexistent or unclosed group in regex; marked by <-- HERE
	    in m/%s/
	   (F) You used something like "\g{-7}" in your regular expression,
	   but there are not at least seven sets of closed capturing
	   parentheses in the expression before where the "\g{-7}" was
	   located.

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.

       Reference to nonexistent named group in regex; marked by <-- HERE in
	    m/%s/
	   (F) You used something like "\k'NAME'" or "\k<NAME>" in your
	   regular expression, but there is no corresponding named capturing
	   parentheses such as "(?'NAME'...)" or "(?<NAME"...). Check if the
	   name has been spelled correctly both in the backreference and the
	   declaration.

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.

       (?(DEFINE)....) does not allow branches in regex; marked by <-- HERE in
	    m/%s/
	   (F) You used something like "(?(DEFINE)...|..)" which is illegal.
	   The most likely cause of this error is that you left out a
	   parenthesis inside of the "...." part.

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.

       regexp memory corruption
	   (P) The regular expression engine got confused by what the regular
	   expression compiler gave it.

       Regexp out of space
	   (P) A "can't happen" error, because safemalloc() should have caught
	   it earlier.

       Repeated format line will never terminate (~~ and @# incompatible)
	   (F) Your format contains the ~~ repeat-until-blank sequence and a
	   numeric field that will never go blank so that the repetition never
	   terminates. You might use ^# instead.  See perlform.

       Replacement list is longer than search list
	   (W misc) You have used a replacement list that is longer than the
	   search list. So the additional elements in the replacement list are
	   meaningless.

       Reversed %s= operator
	   (W syntax) You wrote your assignment operator backwards.  The =
	   must always comes last, to avoid ambiguity with subsequent unary
	   operators.

       rewinddir() attempted on invalid dirhandle %s
	   (W io) The dirhandle you tried to do a rewinddir() on is either
	   closed or not really a dirhandle.  Check your control flow.

       Scalars leaked: %d
	   (P) Something went wrong in Perl's internal bookkeeping of scalars:
	   not all scalar variables were deallocated by the time Perl exited.
	   What this usually indicates is a memory leak, which is of course
	   bad, especially if the Perl program is intended to be long-running.

       Scalar value @%s[%s] better written as $%s[%s]
	   (W syntax) You've used an array slice (indicated by @) to select a
	   single element of an array.	Generally it's better to ask for a
	   scalar value (indicated by $).  The difference is that $foo[&bar]
	   always behaves like a scalar, both when assigning to it and when
	   evaluating its argument, while @foo[&bar] behaves like a list when
	   you assign to it, and provides a list context to its subscript,
	   which can do weird things if you're expecting only one subscript.

	   On the other hand, if you were actually hoping to treat the array
	   element as a list, you need to look into how references work,
	   because Perl will not magically convert between scalars and lists
	   for you.  See perlref.

       Scalar value @%s{%s} better written as $%s{%s}
	   (W syntax) You've used a hash slice (indicated by @) to select a
	   single element of a hash.  Generally it's better to ask for a
	   scalar value (indicated by $).  The difference is that $foo{&bar}
	   always behaves like a scalar, both when assigning to it and when
	   evaluating its argument, while @foo{&bar} behaves like a list when
	   you assign to it, and provides a list context to its subscript,
	   which can do weird things if you're expecting only one subscript.

	   On the other hand, if you were actually hoping to treat the hash
	   element as a list, you need to look into how references work,
	   because Perl will not magically convert between scalars and lists
	   for you.  See perlref.

       Search pattern not terminated
	   (F) The lexer couldn't find the final delimiter of a // or m{}
	   construct.  Remember that bracketing delimiters count nesting
	   level.  Missing the leading "$" from a variable $m may cause this
	   error.

	   Note that since Perl 5.9.0 a // can also be the defined-or
	   construct, not just the empty search pattern.  Therefore code
	   written in Perl 5.9.0 or later that uses the // as the defined-or
	   can be misparsed by pre-5.9.0 Perls as a non-terminated search
	   pattern.

       Search pattern not terminated or ternary operator parsed as search
	    pattern
	   (F) The lexer couldn't find the final delimiter of a "?PATTERN?"
	   construct.

	   The question mark is also used as part of the ternary operator (as
	   in "foo ? 0 : 1") leading to some ambiguous constructions being
	   wrongly parsed. One way to disambiguate the parsing is to put
	   parentheses around the conditional expression, i.e. "(foo) ? 0 :
	   1".

       %sseek() on unopened filehandle
	   (W unopened) You tried to use the seek() or sysseek() function on a
	   filehandle that was either never opened or has since been closed.

       seekdir() attempted on invalid dirhandle %s
	   (W io) The dirhandle you are doing a seekdir() on is either closed
	   or not really a dirhandle.  Check your control flow.

       select not implemented
	   (F) This machine doesn't implement the select() system call.

       Self-ties of arrays and hashes are not supported
	   (F) Self-ties are of arrays and hashes are not supported in the
	   current implementation.

       Semicolon seems to be missing
	   (W semicolon) A nearby syntax error was probably caused by a
	   missing semicolon, or possibly some other missing operator, such as
	   a comma.

       semi-panic: attempt to dup freed string
	   (S internal) The internal newSVsv() routine was called to duplicate
	   a scalar that had previously been marked as free.

       sem%s not implemented
	   (F) You don't have System V semaphore IPC on your system.

       send() on closed socket %s
	   (W closed) The socket you're sending to got itself closed sometime
	   before now.	Check your control flow.

       Sequence (? incomplete in regex; marked by <-- HERE in m/%s/
	   (F) A regular expression ended with an incomplete extension (?. The
	   <-- HERE shows in the regular expression about where the problem
	   was discovered. See perlre.

       Sequence (?%s...) not implemented in regex; marked by <-- HERE in m/%s/
	   (F) A proposed regular expression extension has the character
	   reserved but has not yet been written. The <-- HERE shows in the
	   regular expression about where the problem was discovered. See
	   perlre.

       Sequence (?%s...) not recognized in regex; marked by <-- HERE in m/%s/
	   (F) You used a regular expression extension that doesn't make
	   sense.  The <-- HERE shows in the regular expression about where
	   the problem was discovered.	See perlre.

       Sequence \\%s... not terminated in regex; marked by <-- HERE in m/%s/
	   (F) The regular expression expects a mandatory argument following
	   the escape sequence and this has been omitted or incorrectly
	   written.

       Sequence (?#... not terminated in regex; marked by <-- HERE in m/%s/
	   (F) A regular expression comment must be terminated by a closing
	   parenthesis.	 Embedded parentheses aren't allowed.  The <-- HERE
	   shows in the regular expression about where the problem was
	   discovered. See perlre.

       Sequence (?{...}) not terminated or not {}-balanced in regex; marked by
	    <-- HERE in m/%s/
	   (F) If the contents of a (?{...}) clause contains braces, they must
	   balance for Perl to properly detect the end of the clause. The <--
	   HERE shows in the regular expression about where the problem was
	   discovered. See perlre.

       500 Server error
	   See Server error.

       Server error
	   This is the error message generally seen in a browser window when
	   trying to run a CGI program (including SSI) over the web. The
	   actual error text varies widely from server to server. The most
	   frequently-seen variants are "500 Server error", "Method
	   (something) not permitted", "Document contains no data", "Premature
	   end of script headers", and "Did not produce a valid header".

	   This is a CGI error, not a Perl error.

	   You need to make sure your script is executable, is accessible by
	   the user CGI is running the script under (which is probably not the
	   user account you tested it under), does not rely on any environment
	   variables (like PATH) from the user it isn't running under, and
	   isn't in a location where the CGI server can't find it, basically,
	   more or less.  Please see the following for more information:

		   http://www.perl.org/CGI_MetaFAQ.html
		   http://www.htmlhelp.org/faq/cgifaq.html
		   http://www.w3.org/Security/Faq/

	   You should also look at perlfaq9.

       setegid() not implemented
	   (F) You tried to assign to $), and your operating system doesn't
	   support the setegid() system call (or equivalent), or at least
	   Configure didn't think so.

       seteuid() not implemented
	   (F) You tried to assign to $>, and your operating system doesn't
	   support the seteuid() system call (or equivalent), or at least
	   Configure didn't think so.

       setpgrp can't take arguments
	   (F) Your system has the setpgrp() from BSD 4.2, which takes no
	   arguments, unlike POSIX setpgid(), which takes a process ID and
	   process group ID.

       setrgid() not implemented
	   (F) You tried to assign to $(, and your operating system doesn't
	   support the setrgid() system call (or equivalent), or at least
	   Configure didn't think so.

       setruid() not implemented
	   (F) You tried to assign to $<, and your operating system doesn't
	   support the setruid() system call (or equivalent), or at least
	   Configure didn't think so.

       setsockopt() on closed socket %s
	   (W closed) You tried to set a socket option on a closed socket.
	   Did you forget to check the return value of your socket() call?
	   See "setsockopt" in perlfunc.

       Setuid/gid script is writable by world
	   (F) The setuid emulator won't run a script that is writable by the
	   world, because the world might have written on it already.

       Setuid script not plain file
	   (F) The setuid emulator won't run a script that isn't read from a
	   file, but from a socket, a pipe or another device.

       shm%s not implemented
	   (F) You don't have System V shared memory IPC on your system.

       !=~ should be !~
	   (W syntax) The non-matching operator is !~, not !=~.	 !=~ will be
	   interpreted as the != (numeric not equal) and ~ (1's complement)
	   operators: probably not what you intended.

       <> should be quotes
	   (F) You wrote "require <file>" when you should have written
	   "require 'file'".

       /%s/ should probably be written as "%s"
	   (W syntax) You have used a pattern where Perl expected to find a
	   string, as in the first argument to "join".	Perl will treat the
	   true or false result of matching the pattern against $_ as the
	   string, which is probably not what you had in mind.

       shutdown() on closed socket %s
	   (W closed) You tried to do a shutdown on a closed socket.  Seems a
	   bit superfluous.

       SIG%s handler "%s" not defined
	   (W signal) The signal handler named in %SIG doesn't, in fact,
	   exist.  Perhaps you put it into the wrong package?

       Smart matching a non-overloaded object breaks encapsulation
	   (F) You should not use the "~~" operator on an object that does not
	   overload it: Perl refuses to use the object's underlying structure
	   for the smart match.

       sort is now a reserved word
	   (F) An ancient error message that almost nobody ever runs into
	   anymore.  But before sort was a keyword, people sometimes used it
	   as a filehandle.

       Sort subroutine didn't return single value
	   (F) A sort comparison subroutine may not return a list value with
	   more or less than one element.  See "sort" in perlfunc.

       splice() offset past end of array
	   (W misc) You attempted to specify an offset that was past the end
	   of the array passed to splice(). Splicing will instead commence at
	   the end of the array, rather than past it. If this isn't what you
	   want, try explicitly pre-extending the array by assigning $#array =
	   $offset. See "splice" in perlfunc.

       Split loop
	   (P) The split was looping infinitely.  (Obviously, a split
	   shouldn't iterate more times than there are characters of input,
	   which is what happened.) See "split" in perlfunc.

       Statement unlikely to be reached
	   (W exec) You did an exec() with some statement after it other than
	   a die().  This is almost always an error, because exec() never
	   returns unless there was a failure.	You probably wanted to use
	   system() instead, which does return.	 To suppress this warning, put
	   the exec() in a block by itself.

       stat() on unopened filehandle %s
	   (W unopened) You tried to use the stat() function on a filehandle
	   that was either never opened or has since been closed.

       Stub found while resolving method "%s" overloading "%s" in package "%s"
	   (P) Overloading resolution over @ISA tree may be broken by
	   importation stubs.  Stubs should never be implicitly created, but
	   explicit calls to "can" may break this.

       Subroutine %s redefined
	   (W redefine) You redefined a subroutine.  To suppress this warning,
	   say

	       {
		   no warnings 'redefine';
		   eval "sub name { ... }";
	       }

       Substitution loop
	   (P) The substitution was looping infinitely.	 (Obviously, a
	   substitution shouldn't iterate more times than there are characters
	   of input, which is what happened.)  See the discussion of
	   substitution in "Regexp Quote-Like Operators" in perlop.

       Substitution pattern not terminated
	   (F) The lexer couldn't find the interior delimiter of an s/// or
	   s{}{} construct.  Remember that bracketing delimiters count nesting
	   level.  Missing the leading "$" from variable $s may cause this
	   error.

       Substitution replacement not terminated
	   (F) The lexer couldn't find the final delimiter of an s/// or s{}{}
	   construct.  Remember that bracketing delimiters count nesting
	   level.  Missing the leading "$" from variable $s may cause this
	   error.

       substr outside of string
	   (W substr),(F) You tried to reference a substr() that pointed
	   outside of a string.	 That is, the absolute value of the offset was
	   larger than the length of the string.  See "substr" in perlfunc.
	   This warning is fatal if substr is used in an lvalue context (as
	   the left hand side of an assignment or as a subroutine argument for
	   example).

       sv_upgrade from type %d down to type %d
	   (P) Perl tried to force the upgrade an SV to a type which was
	   actually inferior to its current type.

       Switch (?(condition)... contains too many branches in regex; marked by
	    <-- HERE in m/%s/
	   (F) A (?(condition)if-clause|else-clause) construct can have at
	   most two branches (the if-clause and the else-clause). If you want
	   one or both to contain alternation, such as using
	   "this|that|other", enclose it in clustering parentheses:

	       (?(condition)(?:this|that|other)|else-clause)

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered. See perlre.

       Switch condition not recognized in regex; marked by <-- HERE in m/%s/
	   (F) If the argument to the (?(...)if-clause|else-clause) construct
	   is a number, it can be only a number. The <-- HERE shows in the
	   regular expression about where the problem was discovered. See
	   perlre.

       switching effective %s is not implemented
	   (F) While under the "use filetest" pragma, we cannot switch the
	   real and effective uids or gids.

       %s syntax
	   (F) The final summary message when a "perl -c" succeeds.

       syntax error
	   (F) Probably means you had a syntax error.  Common reasons include:

	       A keyword is misspelled.
	       A semicolon is missing.
	       A comma is missing.
	       An opening or closing parenthesis is missing.
	       An opening or closing brace is missing.
	       A closing quote is missing.

	   Often there will be another error message associated with the
	   syntax error giving more information.  (Sometimes it helps to turn
	   on -w.)  The error message itself often tells you where it was in
	   the line when it decided to give up.	 Sometimes the actual error is
	   several tokens before this, because Perl is good at understanding
	   random input.  Occasionally the line number may be misleading, and
	   once in a blue moon the only way to figure out what's triggering
	   the error is to call "perl -c" repeatedly, chopping away half the
	   program each time to see if the error went away.  Sort of the
	   cybernetic version of 20 questions.

       syntax error at line %d: `%s' unexpected
	   (A) You've accidentally run your script through the Bourne shell
	   instead of Perl.  Check the #! line, or manually feed your script
	   into Perl yourself.

       syntax error in file %s at line %d, next 2 tokens "%s"
	   (F) This error is likely to occur if you run a perl5 script through
	   a perl4 interpreter, especially if the next 2 tokens are "use
	   strict" or "my $var" or "our $var".

       sysread() on closed filehandle %s
	   (W closed) You tried to read from a closed filehandle.

       sysread() on unopened filehandle %s
	   (W unopened) You tried to read from a filehandle that was never
	   opened.

       System V %s is not implemented on this machine
	   (F) You tried to do something with a function beginning with "sem",
	   "shm", or "msg" but that System V IPC is not implemented in your
	   machine.  In some machines the functionality can exist but be
	   unconfigured.  Consult your system support.

       syswrite() on closed filehandle %s
	   (W closed) The filehandle you're writing to got itself closed
	   sometime before now.	 Check your control flow.

       "-T" and "-B" not implemented on filehandles
	   (F) Perl can't peek at the stdio buffer of filehandles when it
	   doesn't know about your kind of stdio.  You'll have to use a
	   filename instead.

       Target of goto is too deeply nested
	   (F) You tried to use "goto" to reach a label that was too deeply
	   nested for Perl to reach.  Perl is doing you a favor by refusing.

       tell() on unopened filehandle
	   (W unopened) You tried to use the tell() function on a filehandle
	   that was either never opened or has since been closed.

       telldir() attempted on invalid dirhandle %s
	   (W io) The dirhandle you tried to telldir() is either closed or not
	   really a dirhandle.	Check your control flow.

       That use of $[ is unsupported
	   (F) Assignment to $[ is now strictly circumscribed, and interpreted
	   as a compiler directive.  You may say only one of

	       $[ = 0;
	       $[ = 1;
	       ...
	       local $[ = 0;
	       local $[ = 1;
	       ...

	   This is to prevent the problem of one module changing the array
	   base out from under another module inadvertently.  See "$[" in
	   perlvar.

       The crypt() function is unimplemented due to excessive paranoia
	   (F) Configure couldn't find the crypt() function on your machine,
	   probably because your vendor didn't supply it, probably because
	   they think the U.S. Government thinks it's a secret, or at least
	   that they will continue to pretend that it is.  And if you quote me
	   on that, I will deny it.

       The %s function is unimplemented
	   The function indicated isn't implemented on this architecture,
	   according to the probings of Configure.

       The stat preceding %s wasn't an lstat
	   (F) It makes no sense to test the current stat buffer for symbolic
	   linkhood if the last stat that wrote to the stat buffer already
	   went past the symlink to get to the real file.  Use an actual
	   filename instead.

       The 'unique' attribute may only be applied to 'our' variables
	   (F) This attribute was never supported on "my" or "sub"
	   declarations.

       This Perl can't reset CRTL environ elements (%s)

       This Perl can't set CRTL environ elements (%s=%s)
	   (W internal) Warnings peculiar to VMS.  You tried to change or
	   delete an element of the CRTL's internal environ array, but your
	   copy of Perl wasn't built with a CRTL that contained the setenv()
	   function.  You'll need to rebuild Perl with a CRTL that does, or
	   redefine PERL_ENV_TABLES (see perlvms) so that the environ array
	   isn't the target of the change to %ENV which produced the warning.

       thread failed to start: %s
	   (W threads)(S) The entry point function of threads->create() failed
	   for some reason.

       times not implemented
	   (F) Your version of the C library apparently doesn't do times().  I
	   suspect you're not running on Unix.

       "-T" is on the #! line, it must also be used on the command line
	   (X) The #! line (or local equivalent) in a Perl script contains the
	   -T option (or the -t option), but Perl was not invoked with -T in
	   its command line.  This is an error because, by the time Perl
	   discovers a -T in a script, it's too late to properly taint
	   everything from the environment.  So Perl gives up.

	   If the Perl script is being executed as a command using the #!
	   mechanism (or its local equivalent), this error can usually be
	   fixed by editing the #! line so that the -%c option is a part of
	   Perl's first argument: e.g. change "perl -n -%c" to "perl -%c -n".

	   If the Perl script is being executed as "perl scriptname", then the
	   -%c option must appear on the command line: "perl -%c scriptname".

       To%s: illegal mapping '%s'
	   (F) You tried to define a customized To-mapping for lc(), lcfirst,
	   uc(), or ucfirst() (or their string-inlined versions), but you
	   specified an illegal mapping.  See "User-Defined Character
	   Properties" in perlunicode.

       Too deeply nested ()-groups
	   (F) Your template contains ()-groups with a ridiculously deep
	   nesting level.

       Too few args to syscall
	   (F) There has to be at least one argument to syscall() to specify
	   the system call to call, silly dilly.

       Too late for "-%s" option
	   (X) The #! line (or local equivalent) in a Perl script contains the
	   -M, -m or -C option.

	   In the case of -M and -m, this is an error because those options
	   are not intended for use inside scripts.  Use the "use" pragma
	   instead.

	   The -C option only works if it is specified on the command line as
	   well (with the same sequence of letters or numbers following).
	   Either specify this option on the command line, or, if your system
	   supports it, make your script executable and run it directly
	   instead of passing it to perl.

       Too late to run %s block
	   (W void) A CHECK or INIT block is being defined during run time
	   proper, when the opportunity to run them has already passed.
	   Perhaps you are loading a file with "require" or "do" when you
	   should be using "use" instead.  Or perhaps you should put the
	   "require" or "do" inside a BEGIN block.

       Too many args to syscall
	   (F) Perl supports a maximum of only 14 args to syscall().

       Too many arguments for %s
	   (F) The function requires fewer arguments than you specified.

       Too many )'s
	   (A) You've accidentally run your script through csh instead of
	   Perl.  Check the #! line, or manually feed your script into Perl
	   yourself.

       Too many ('s
	   (A) You've accidentally run your script through csh instead of
	   Perl.  Check the #! line, or manually feed your script into Perl
	   yourself.

       Trailing \ in regex m/%s/
	   (F) The regular expression ends with an unbackslashed backslash.
	   Backslash it.   See perlre.

       Transliteration pattern not terminated
	   (F) The lexer couldn't find the interior delimiter of a tr/// or
	   tr[][] or y/// or y[][] construct.  Missing the leading "$" from
	   variables $tr or $y may cause this error.

       Transliteration replacement not terminated
	   (F) The lexer couldn't find the final delimiter of a tr///, tr[][],
	   y/// or y[][] construct.

       '%s' trapped by operation mask
	   (F) You tried to use an operator from a Safe compartment in which
	   it's disallowed. See Safe.

       truncate not implemented
	   (F) Your machine doesn't implement a file truncation mechanism that
	   Configure knows about.

       Type of arg %d to %s must be %s (not %s)
	   (F) This function requires the argument in that position to be of a
	   certain type.  Arrays must be @NAME or "@{EXPR}".  Hashes must be
	   %NAME or "%{EXPR}".	No implicit dereferencing is allowedO-use the
	   {EXPR} forms as an explicit dereference.  See perlref.

       umask not implemented
	   (F) Your machine doesn't implement the umask function and you tried
	   to use it to restrict permissions for yourself (EXPR & 0700).

       Unable to create sub named "%s"
	   (F) You attempted to create or access a subroutine with an illegal
	   name.

       Unbalanced context: %d more PUSHes than POPs
	   (W internal) The exit code detected an internal inconsistency in
	   how many execution contexts were entered and left.

       Unbalanced saves: %d more saves than restores
	   (W internal) The exit code detected an internal inconsistency in
	   how many values were temporarily localized.

       Unbalanced scopes: %d more ENTERs than LEAVEs
	   (W internal) The exit code detected an internal inconsistency in
	   how many blocks were entered and left.

       Unbalanced tmps: %d more allocs than frees
	   (W internal) The exit code detected an internal inconsistency in
	   how many mortal scalars were allocated and freed.

       Undefined format "%s" called
	   (F) The format indicated doesn't seem to exist.  Perhaps it's
	   really in another package?  See perlform.

       Undefined sort subroutine "%s" called
	   (F) The sort comparison routine specified doesn't seem to exist.
	   Perhaps it's in a different package?	 See "sort" in perlfunc.

       Undefined subroutine &%s called
	   (F) The subroutine indicated hasn't been defined, or if it was, it
	   has since been undefined.

       Undefined subroutine called
	   (F) The anonymous subroutine you're trying to call hasn't been
	   defined, or if it was, it has since been undefined.

       Undefined subroutine in sort
	   (F) The sort comparison routine specified is declared but doesn't
	   seem to have been defined yet.  See "sort" in perlfunc.

       Undefined top format "%s" called
	   (F) The format indicated doesn't seem to exist.  Perhaps it's
	   really in another package?  See perlform.

       Undefined value assigned to typeglob
	   (W misc) An undefined value was assigned to a typeglob, a la "*foo
	   = undef".  This does nothing.  It's possible that you really mean
	   "undef *foo".

       %s: Undefined variable
	   (A) You've accidentally run your script through csh instead of
	   Perl.  Check the #! line, or manually feed your script into Perl
	   yourself.

       unexec of %s into %s failed!
	   (F) The unexec() routine failed for some reason.  See your local
	   FSF representative, who probably put it there in the first place.

       Unicode non-character %s is illegal for interchange
	   (W utf8) Certain codepoints, such as U+FFFE and U+FFFF, are defined
	   by the Unicode standard to be non-characters. Those are legal
	   codepoints, but are reserved for internal use; so, applications
	   shouldn't attempt to exchange them.	In some cases, this message is
	   also given if you use a codepoint that isn't in UnicodeO-that is it
	   is above the legal maximum of U+10FFFF.  These aren't legal at all
	   in Unicode, so they are illegal for interchange, but can be used
	   internally in a Perl program.  If you know what you are doing you
	   can turn off this warning by "no warnings 'utf8';".

       Unknown BYTEORDER
	   (F) There are no byte-swapping functions for a machine with this
	   byte order.

       Unknown open() mode '%s'
	   (F) The second argument of 3-argument open() is not among the list
	   of valid modes: "<", ">", ">>", "+<", "+>", "+>>", "-|", "|-",
	   "<&", ">&".

       Unknown PerlIO layer "%s"
	   (W layer) An attempt was made to push an unknown layer onto the
	   Perl I/O system.  (Layers take care of transforming data between
	   external and internal representations.)  Note that some layers,
	   such as "mmap", are not supported in all environments.  If your
	   program didn't explicitly request the failing operation, it may be
	   the result of the value of the environment variable PERLIO.

       Unknown process %x sent message to prime_env_iter: %s
	   (P) An error peculiar to VMS.  Perl was reading values for %ENV
	   before iterating over it, and someone else stuck a message in the
	   stream of data Perl expected.  Someone's very confused, or perhaps
	   trying to subvert Perl's population of %ENV for nefarious purposes.

       Unknown "re" subpragma '%s' (known ones are: %s)
	   You tried to use an unknown subpragma of the "re" pragma.

       Unknown switch condition (?(%.2s in regex; marked by <-- HERE in m/%s/
	   (F) The condition part of a (?(condition)if-clause|else-clause)
	   construct is not known. The condition may be lookahead or
	   lookbehind (the condition is true if the lookahead or lookbehind is
	   true), a (?{...})  construct (the condition is true if the code
	   evaluates to a true value), or a number (the condition is true if
	   the set of capturing parentheses named by the number matched).

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered.  See perlre.

       Unknown Unicode option letter '%c'
	   You specified an unknown Unicode option.  See perlrun documentation
	   of the "-C" switch for the list of known options.

       Unknown Unicode option value %x
	   You specified an unknown Unicode option.  See perlrun documentation
	   of the "-C" switch for the list of known options.

       Unknown warnings category '%s'
	   (F) An error issued by the "warnings" pragma. You specified a
	   warnings category that is unknown to perl at this point.

	   Note that if you want to enable a warnings category registered by a
	   module (e.g. "use warnings 'File::Find'"), you must have imported
	   this module

       Unknown verb pattern '%s' in regex; marked by <-- HERE in m/%s/
	   (F) You either made a typo or have incorrectly put a "*" quantifier
	   after an open brace in your pattern.	 Check the pattern and review
	   perlre for details on legal verb patterns.

	   first.

       unmatched [ in regex; marked by <-- HERE in m/%s/
	   (F) The brackets around a character class must match. If you wish
	   to include a closing bracket in a character class, backslash it or
	   put it first. The <-- HERE shows in the regular expression about
	   where the problem was discovered. See perlre.

       unmatched ( in regex; marked by <-- HERE in m/%s/
	   (F) Unbackslashed parentheses must always be balanced in regular
	   expressions. If you're a vi user, the % key is valuable for finding
	   the matching parenthesis. The <-- HERE shows in the regular
	   expression about where the problem was discovered. See perlre.

       Unmatched right %s bracket
	   (F) The lexer counted more closing curly or square brackets than
	   opening ones, so you're probably missing a matching opening
	   bracket.  As a general rule, you'll find the missing one (so to
	   speak) near the place you were last editing.

       Unquoted string "%s" may clash with future reserved word
	   (W reserved) You used a bareword that might someday be claimed as a
	   reserved word.  It's best to put such a word in quotes, or
	   capitalize it somehow, or insert an underbar into it.  You might
	   also declare it as a subroutine.

       Unrecognized character %s; marked by <-- HERE after %s near column %d
	   (F) The Perl parser has no idea what to do with the specified
	   character in your Perl script (or eval) near the specified column.
	   Perhaps you tried to run a compressed script, a binary program, or
	   a directory as a Perl program.

       Unrecognized escape \\%c in character class passed through in regex;
	    marked by <-- HERE in m/%s/
	   (W regexp) You used a backslash-character combination which is not
	   recognized by Perl inside character classes.	 The character was
	   understood literally, but this may change in a future version of
	   Perl.  The <-- HERE shows in the regular expression about where the
	   escape was discovered.

       Unrecognized escape \\%c passed through
	   (W misc) You used a backslash-character combination which is not
	   recognized by Perl.	The character was understood literally, but
	   this may change in a future version of Perl.

       Unrecognized escape \\%c passed through in regex; marked by <-- HERE in
	    m/%s/
	   (W regexp) You used a backslash-character combination which is not
	   recognized by Perl.	The character was understood literally, but
	   this may change in a future version of Perl.	 The <-- HERE shows in
	   the regular expression about where the escape was discovered.

       Unrecognized signal name "%s"
	   (F) You specified a signal name to the kill() function that was not
	   recognized.	Say "kill -l" in your shell to see the valid signal
	   names on your system.

       Unrecognized switch: -%s	 (-h will show valid options)
	   (F) You specified an illegal option to Perl.	 Don't do that.	 (If
	   you think you didn't do that, check the #! line to see if it's
	   supplying the bad switch on your behalf.)

       Unsuccessful %s on filename containing newline
	   (W newline) A file operation was attempted on a filename, and that
	   operation failed, PROBABLY because the filename contained a
	   newline, PROBABLY because you forgot to chomp() it off.  See
	   "chomp" in perlfunc.

       Unsupported directory function "%s" called
	   (F) Your machine doesn't support opendir() and readdir().

       Unsupported function %s
	   (F) This machine doesn't implement the indicated function,
	   apparently.	At least, Configure doesn't think so.

       Unsupported function fork
	   (F) Your version of executable does not support forking.

	   Note that under some systems, like OS/2, there may be different
	   flavors of Perl executables, some of which may support fork, some
	   not. Try changing the name you call Perl by to "perl_", "perl__",
	   and so on.

       Unsupported script encoding %s
	   (F) Your program file begins with a Unicode Byte Order Mark (BOM)
	   which declares it to be in a Unicode encoding that Perl cannot
	   read.

       Unsupported socket function "%s" called
	   (F) Your machine doesn't support the Berkeley socket mechanism, or
	   at least that's what Configure thought.

       Unterminated attribute list
	   (F) The lexer found something other than a simple identifier at the
	   start of an attribute, and it wasn't a semicolon or the start of a
	   block.  Perhaps you terminated the parameter list of the previous
	   attribute too soon.	See attributes.

       Unterminated attribute parameter in attribute list
	   (F) The lexer saw an opening (left) parenthesis character while
	   parsing an attribute list, but the matching closing (right)
	   parenthesis character was not found.	 You may need to add (or
	   remove) a backslash character to get your parentheses to balance.
	   See attributes.

       Unterminated compressed integer
	   (F) An argument to unpack("w",...) was incompatible with the BER
	   compressed integer format and could not be converted to an integer.
	   See "pack" in perlfunc.

       Unterminated verb pattern in regex; marked by <-- HERE in m/%s/
	   (F) You used a pattern of the form "(*VERB)" but did not terminate
	   the pattern with a ")". Fix the pattern and retry.

       Unterminated verb pattern argument in regex; marked by <-- HERE in
	    m/%s/
	   (F) You used a pattern of the form "(*VERB:ARG)" but did not
	   terminate the pattern with a ")". Fix the pattern and retry.

       Unterminated \g{...} pattern in regex; marked by <-- HERE in m/%s/
	   (F) You missed a close brace on a \g{..} pattern (group reference)
	   in a regular expression. Fix the pattern and retry.

       Unterminated <> operator
	   (F) The lexer saw a left angle bracket in a place where it was
	   expecting a term, so it's looking for the corresponding right angle
	   bracket, and not finding it.	 Chances are you left some needed
	   parentheses out earlier in the line, and you really meant a "less
	   than".

       untie attempted while %d inner references still exist
	   (W untie) A copy of the object returned from "tie" (or "tied") was
	   still valid when "untie" was called.

       Usage: POSIX::%s(%s)
	   (F) You called a POSIX function with incorrect arguments.  See
	   "FUNCTIONS" in POSIX for more information.

       Usage: Win32::%s(%s)
	   (F) You called a Win32 function with incorrect arguments.  See
	   Win32 for more information.

       Useless (?-%s) - don't use /%s modifier in regex; marked by <-- HERE in
	    m/%s/
	   (W regexp) You have used an internal modifier such as (?-o) that
	   has no meaning unless removed from the entire regexp:

	       if ($string =~ /(?-o)$pattern/o) { ... }

	   must be written as

	       if ($string =~ /$pattern/) { ... }

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered. See perlre.

       Useless localization of %s
	   (W syntax) The localization of lvalues such as "local($x=10)" is
	   legal, but in fact the local() currently has no effect. This may
	   change at some point in the future, but in the meantime such code
	   is discouraged.

       Useless (?%s) - use /%s modifier in regex; marked by <-- HERE in m/%s/
	   (W regexp) You have used an internal modifier such as (?o) that has
	   no meaning unless applied to the entire regexp:

	       if ($string =~ /(?o)$pattern/) { ... }

	   must be written as

	       if ($string =~ /$pattern/o) { ... }

	   The <-- HERE shows in the regular expression about where the
	   problem was discovered. See perlre.

       Useless use of /d modifier in transliteration operator
	   (W misc) You have used the /d modifier where the searchlist has the
	   same length as the replacelist. See perlop for more information
	   about the /d modifier.

       Useless use of %s in void context
	   (W void) You did something without a side effect in a context that
	   does nothing with the return value, such as a statement that
	   doesn't return a value from a block, or the left side of a scalar
	   comma operator.  Very often this points not to stupidity on your
	   part, but a failure of Perl to parse your program the way you
	   thought it would.  For example, you'd get this if you mixed up your
	   C precedence with Python precedence and said

	       $one, $two = 1, 2;

	   when you meant to say

	       ($one, $two) = (1, 2);

	   Another common error is to use ordinary parentheses to construct a
	   list reference when you should be using square or curly brackets,
	   for example, if you say

	       $array = (1,2);

	   when you should have said

	       $array = [1,2];

	   The square brackets explicitly turn a list value into a scalar
	   value, while parentheses do not.  So when a parenthesized list is
	   evaluated in a scalar context, the comma is treated like C's comma
	   operator, which throws away the left argument, which is not what
	   you want.  See perlref for more on this.

	   This warning will not be issued for numerical constants equal to 0
	   or 1 since they are often used in statements like

	       1 while sub_with_side_effects();

	   String constants that would normally evaluate to 0 or 1 are warned
	   about.

       Useless use of "re" pragma
	   (W) You did "use re;" without any arguments.	  That isn't very
	   useful.

       Useless use of sort in scalar context
	   (W void) You used sort in scalar context, as in :

	       my $x = sort @y;

	   This is not very useful, and perl currently optimizes this away.

       Useless use of %s with no values
	   (W syntax) You used the push() or unshift() function with no
	   arguments apart from the array, like "push(@x)" or "unshift(@foo)".
	   That won't usually have any effect on the array, so is completely
	   useless. It's possible in principle that push(@tied_array) could
	   have some effect if the array is tied to a class which implements a
	   PUSH method. If so, you can write it as "push(@tied_array,())" to
	   avoid this warning.

       "use" not allowed in expression
	   (F) The "use" keyword is recognized and executed at compile time,
	   and returns no useful value.	 See perlmod.

       Use of assignment to $[ is deprecated
	   (D deprecated) The $[ variable (index of the first element in an
	   array) is deprecated. See "$[" in perlvar.

       Use of bare << to mean <<"" is deprecated
	   (D deprecated) You are now encouraged to use the explicitly quoted
	   form if you wish to use an empty line as the terminator of the
	   here-document.

       Use of comma-less variable list is deprecated
	   (D deprecated) The values you give to a format should be separated
	   by commas, not just aligned on a line.

       Use of chdir('') or chdir(undef) as chdir() deprecated
	   (D deprecated) chdir() with no arguments is documented to change to
	   $ENV{HOME} or $ENV{LOGDIR}.	chdir(undef) and chdir('') share this
	   behavior, but that has been deprecated.  In future versions they
	   will simply fail.

	   Be careful to check that what you pass to chdir() is defined and
	   not blank, else you might find yourself in your home directory.

       Use of /c modifier is meaningless in s///
	   (W regexp) You used the /c modifier in a substitution.  The /c
	   modifier is not presently meaningful in substitutions.

       Use of /c modifier is meaningless without /g
	   (W regexp) You used the /c modifier with a regex operand, but
	   didn't use the /g modifier.	Currently, /c is meaningful only when
	   /g is used.	(This may change in the future.)

       Use of := for an empty attribute list is deprecated
	   (D deprecated) The construction "my $x := 42" currently parses
	   correctly in perl, being equivalent to "my $x : = 42" (applying an
	   empty attribute list to $x). This useless construct is now
	   deprecated, so ":=" can be reclaimed as a new operator in the
	   future.

       Use of freed value in iteration
	   (F) Perhaps you modified the iterated array within the loop?	 This
	   error is typically caused by code like the following:

	       @a = (3,4);
	       @a = () for (1,2,@a);

	   You are not supposed to modify arrays while they are being iterated
	   over.  For speed and efficiency reasons, Perl internally does not
	   do full reference-counting of iterated items, hence deleting such
	   an item in the middle of an iteration causes Perl to see a freed
	   value.

       Use of *glob{FILEHANDLE} is deprecated
	   (D deprecated) You are now encouraged to use the shorter *glob{IO}
	   form to access the filehandle slot within a typeglob.

       Use of /g modifier is meaningless in split
	   (W regexp) You used the /g modifier on the pattern for a "split"
	   operator.  Since "split" always tries to match the pattern
	   repeatedly, the "/g" has no effect.

       Use of "goto" to jump into a construct is deprecated
	   (D deprecated) Using "goto" to jump from an outer scope into an
	   inner scope is deprecated and should be avoided.

       Use of inherited AUTOLOAD for non-method %s() is deprecated
	   (D deprecated) As an (ahem) accidental feature, "AUTOLOAD"
	   subroutines are looked up as methods (using the @ISA hierarchy)
	   even when the subroutines to be autoloaded were called as plain
	   functions (e.g.  "Foo::bar()"), not as methods (e.g. "Foo->bar()"
	   or "$obj->bar()").

	   This bug will be rectified in future by using method lookup only
	   for methods' "AUTOLOAD"s.  However, there is a significant base of
	   existing code that may be using the old behavior.  So, as an
	   interim step, Perl currently issues an optional warning when
	   non-methods use inherited "AUTOLOAD"s.

	   The simple rule is:	Inheritance will not work when autoloading
	   non-methods.	 The simple fix for old code is:  In any module that
	   used to depend on inheriting "AUTOLOAD" for non-methods from a base
	   class named "BaseClass", execute "*AUTOLOAD =
	   \&BaseClass::AUTOLOAD" during startup.

	   In code that currently says "use AutoLoader; @ISA =
	   qw(AutoLoader);" you should remove AutoLoader from @ISA and change
	   "use AutoLoader;" to "use AutoLoader 'AUTOLOAD';".

       Use of octal value above 377 is deprecated
	   (D deprecated, W regexp) There is a constant in the regular
	   expression whose value is interpeted by Perl as octal and larger
	   than 377 (255 decimal, 0xFF hex).  Perl may take this to mean
	   different things depending on the rest of the regular expression.
	   If you meant such an octal value, convert it to hexadecimal and use
	   "\xHH" or "\x{HH}" instead.	If you meant to have part of it mean a
	   backreference, use "\g" for that.  See perlre.

       Use of %s in printf format not supported
	   (F) You attempted to use a feature of printf that is accessible
	   from only C.	 This usually means there's a better way to do it in
	   Perl.

       Use of %s is deprecated
	   (D deprecated) The construct indicated is no longer recommended for
	   use, generally because there's a better way to do it, and also
	   because the old way has bad side effects.

       Use of -l on filehandle %s
	   (W io) A filehandle represents an opened file, and when you opened
	   the file it already went past any symlink you are presumably trying
	   to look for.	 The operation returned "undef".  Use a filename
	   instead.

       Use of "package" with no arguments is deprecated
	   (D deprecated) You used the "package" keyword without specifying a
	   package name. So no namespace is current at all. Using this can
	   cause many otherwise reasonable constructs to fail in baffling
	   ways. "use strict;" instead.

       Use of reference "%s" as array index
	   (W misc) You tried to use a reference as an array index; this
	   probably isn't what you mean, because references in numerical
	   context tend to be huge numbers, and so usually indicates
	   programmer error.

	   If you really do mean it, explicitly numify your reference, like
	   so: $array[0+$ref].	This warning is not given for overloaded
	   objects, either, because you can overload the numification and
	   stringification operators and then you assumably know what you are
	   doing.

       Use of reserved word "%s" is deprecated
	   (D deprecated) The indicated bareword is a reserved word.  Future
	   versions of perl may use it as a keyword, so you're better off
	   either explicitly quoting the word in a manner appropriate for its
	   context of use, or using a different name altogether.  The warning
	   can be suppressed for subroutine names by either adding a "&"
	   prefix, or using a package qualifier, e.g. "&our()", or
	   "Foo::our()".

       Use of tainted arguments in %s is deprecated
	   (W taint, deprecated) You have supplied "system()" or "exec()" with
	   multiple arguments and at least one of them is tainted.  This used
	   to be allowed but will become a fatal error in a future version of
	   perl.  Untaint your arguments.  See perlsec.

       Use of uninitialized value%s
	   (W uninitialized) An undefined value was used as if it were already
	   defined.  It was interpreted as a "" or a 0, but maybe it was a
	   mistake.  To suppress this warning assign a defined value to your
	   variables.

	   To help you figure out what was undefined, perl will try to tell
	   you the name of the variable (if any) that was undefined. In some
	   cases it cannot do this, so it also tells you what operation you
	   used the undefined value in.	 Note, however, that perl optimizes
	   your program and the operation displayed in the warning may not
	   necessarily appear literally in your program.  For example, "that
	   $foo" is usually optimized into ""that " . $foo", and the warning
	   will refer to the "concatenation (.)" operator, even though there
	   is no "." in your program.

       Using a hash as a reference is deprecated
	   (D deprecated) You tried to use a hash as a reference, as in
	   "%foo->{"bar"}" or "%$ref->{"hello"}".  Versions of perl <= 5.6.1
	   used to allow this syntax, but shouldn't have. It is now
	   deprecated, and will be removed in a future version.

       Using an array as a reference is deprecated
	   (D deprecated) You tried to use an array as a reference, as in
	   "@foo->[23]" or "@$ref->[99]".  Versions of perl <= 5.6.1 used to
	   allow this syntax, but shouldn't have. It is now deprecated, and
	   will be removed in a future version.

       Using just the first character returned by \N{} in character class
	   (W) A charnames handler may return a sequence of more than one
	   character.  Currently all but the first one are discarded when used
	   in a regular expression pattern bracketed character class.

       Using just the first characters returned by \N{}
	   (W) A charnames handler may return a sequence of characters.	 There
	   is a finite limit as to the number of characters that can be used,
	   which this sequence exceeded.  In the message, the characters in
	   the sequence are separated by dots, and each is shown by its
	   ordinal in hex.  Anything to the left of the "HERE" was retained;
	   anything to the right was discarded.

       UTF-16 surrogate %s
	   (W utf8) You tried to generate half of a UTF-16 surrogate by
	   requesting a Unicode character between the code points 0xD800 and
	   0xDFFF (inclusive).	That range is reserved exclusively for the use
	   of UTF-16 encoding (by having two 16-bit UCS-2 characters); but
	   Perl encodes its characters in UTF-8, so what you got is a very
	   illegal character.  If you really really know what you are doing
	   you can turn off this warning by "no warnings 'utf8';".

       Value of %s can be "0"; test with defined()
	   (W misc) In a conditional expression, you used <HANDLE>, <*>
	   (glob), "each()", or "readdir()" as a boolean value.	 Each of these
	   constructs can return a value of "0"; that would make the
	   conditional expression false, which is probably not what you
	   intended.  When using these constructs in conditional expressions,
	   test their values with the "defined" operator.

       Value of CLI symbol "%s" too long
	   (W misc) A warning peculiar to VMS.	Perl tried to read the value
	   of an %ENV element from a CLI symbol table, and found a resultant
	   string longer than 1024 characters.	The return value has been
	   truncated to 1024 characters.

       Variable "%s" is not available
	   (W closure) During compilation, an inner named subroutine or eval
	   is attempting to capture an outer lexical that is not currently
	   available.  This can happen for one of two reasons. First, the
	   outer lexical may be declared in an outer anonymous subroutine that
	   has not yet been created.  (Remember that named subs are created at
	   compile time, while anonymous subs are created at run-time.) For
	   example,

	       sub { my $a; sub f { $a } }

	   At the time that f is created, it can't capture the current value
	   of $a, since the anonymous subroutine hasn't been created yet.
	   Conversely, the following won't give a warning since the anonymous
	   subroutine has by now been created and is live:

	       sub { my $a; eval 'sub f { $a }' }->();

	   The second situation is caused by an eval accessing a variable that
	   has gone out of scope, for example,

	       sub f {
		   my $a;
		   sub { eval '$a' }
	       }
	       f()->();

	   Here, when the '$a' in the eval is being compiled, f() is not
	   currently being executed, so its $a is not available for capture.

       Variable "%s" is not imported%s
	   (F) While "use strict" in effect, you referred to a global variable
	   that you apparently thought was imported from another module,
	   because something else of the same name (usually a subroutine) is
	   exported by that module.  It usually means you put the wrong funny
	   character on the front of your variable.

       Variable length lookbehind not implemented in m/%s/
	   (F) Lookbehind is allowed only for subexpressions whose length is
	   fixed and known at compile time.  See perlre.

       "%s" variable %s masks earlier declaration in same %s
	   (W misc) A "my", "our" or "state" variable has been redeclared in
	   the current scope or statement, effectively eliminating all access
	   to the previous instance.  This is almost always a typographical
	   error.  Note that the earlier variable will still exist until the
	   end of the scope or until all closure referents to it are
	   destroyed.

       Variable syntax
	   (A) You've accidentally run your script through csh instead of
	   Perl.  Check the #! line, or manually feed your script into Perl
	   yourself.

       Variable "%s" will not stay shared
	   (W closure) An inner (nested) named subroutine is referencing a
	   lexical variable defined in an outer named subroutine.

	   When the inner subroutine is called, it will see the value of the
	   outer subroutine's variable as it was before and during the *first*
	   call to the outer subroutine; in this case, after the first call to
	   the outer subroutine is complete, the inner and outer subroutines
	   will no longer share a common value for the variable.  In other
	   words, the variable will no longer be shared.

	   This problem can usually be solved by making the inner subroutine
	   anonymous, using the "sub {}" syntax.  When inner anonymous subs
	   that reference variables in outer subroutines are created, they are
	   automatically rebound to the current values of such variables.

       Verb pattern '%s' has a mandatory argument in regex; marked by <-- HERE
	    in m/%s/
	   (F) You used a verb pattern that requires an argument. Supply an
	   argument or check that you are using the right verb.

       Verb pattern '%s' may not have an argument in regex; marked by <-- HERE
	    in m/%s/
	   (F) You used a verb pattern that is not allowed an argument. Remove
	   the argument or check that you are using the right verb.

       Version number must be a constant number
	   (P) The attempt to translate a "use Module n.n LIST" statement into
	   its equivalent "BEGIN" block found an internal inconsistency with
	   the version number.

       Version string '%s' contains invalid data; ignoring: '%s'
	   (W misc) The version string contains invalid characters at the end,
	   which are being ignored.

       Warning: something's wrong
	   (W) You passed warn() an empty string (the equivalent of "warn """)
	   or you called it with no args and $@ was empty.

       Warning: unable to close filehandle %s properly
	   (S) The implicit close() done by an open() got an error indication
	   on the close().  This usually indicates your file system ran out of
	   disk space.

       Warning: Use of "%s" without parentheses is ambiguous
	   (S ambiguous) You wrote a unary operator followed by something that
	   looks like a binary operator that could also have been interpreted
	   as a term or unary operator.	 For instance, if you know that the
	   rand function has a default argument of 1.0, and you write

	       rand + 5;

	   you may THINK you wrote the same thing as

	       rand() + 5;

	   but in actual fact, you got

	       rand(+5);

	   So put in parentheses to say what you really mean.

       Wide character in %s
	   (S utf8) Perl met a wide character (>255) when it wasn't expecting
	   one.	 This warning is by default on for I/O (like print).  The
	   easiest way to quiet this warning is simply to add the ":utf8"
	   layer to the output, e.g. "binmode STDOUT, ':utf8'".	 Another way
	   to turn off the warning is to add "no warnings 'utf8';" but that is
	   often closer to cheating.  In general, you are supposed to
	   explicitly mark the filehandle with an encoding, see open and
	   "binmode" in perlfunc.

       Within []-length '%c' not allowed
	   (F) The count in the (un)pack template may be replaced by
	   "[TEMPLATE]" only if "TEMPLATE" always matches the same amount of
	   packed bytes that can be determined from the template alone. This
	   is not possible if it contains an of the codes @, /, U, u, w or a
	   *-length. Redesign the template.

       write() on closed filehandle %s
	   (W closed) The filehandle you're writing to got itself closed
	   sometime before now.	 Check your control flow.

       %s "\x%s" does not map to Unicode
	   When reading in different encodings Perl tries to map everything
	   into Unicode characters.  The bytes you read in are not legal in
	   this encoding, for example

	       utf8 "\xE4" does not map to Unicode

	   if you try to read in the a-diaereses Latin-1 as UTF-8.

       'X' outside of string
	   (F) You had a (un)pack template that specified a relative position
	   before the beginning of the string being (un)packed.	 See "pack" in
	   perlfunc.

       'x' outside of string in unpack
	   (F) You had a pack template that specified a relative position
	   after the end of the string being unpacked.	See "pack" in
	   perlfunc.

       YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!
	   (F) And you probably never will, because you probably don't have
	   the sources to your kernel, and your vendor probably doesn't give a
	   rip about what you want.  Your best bet is to put a setuid C
	   wrapper around your script.

       You need to quote "%s"
	   (W syntax) You assigned a bareword as a signal handler name.
	   Unfortunately, you already have a subroutine of that name declared,
	   which means that Perl 5 will try to call the subroutine when the
	   assignment is executed, which is probably not what you want.	 (If
	   it IS what you want, put an & in front.)

       Your random numbers are not that random
	   (F) When trying to initialise the random seed for hashes, Perl
	   could not get any randomness out of your system.  This usually
	   indicates Something Very Wrong.

SEE ALSO
       warnings, perllexwarn.

perl v5.12.2						    September 28, 2010
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