=item A thread exited while %d threads were running
-(W) When using threaded Perl, a thread (not necessarily the main
+(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
literals or global values as arguments to the "p" pack() template to
avoid this warning.
+=item 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
+
=item Attempt to use reference as lvalue in substr
(W substr) You supplied a reference as the first argument to substr()
(P) An internal request asked to add an array entry to something that
wasn't a symbol table entry.
+=item Bad symbol for dirhandle
+
+(P) An internal request asked to add a dirhandle entry to something
+that wasn't a symbol table entry.
+
+
=item Bad symbol for filehandle
(P) An internal request asked to add a filehandle entry to something
(F) An argument to pack("w",...) was negative. The BER compressed integer
format can only be used with positive integers. See L<perlfunc/pack>.
+=item 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.
+
+=item 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.
+
=item Can only compress unsigned integers in pack
(F) An argument to pack("w",...) was not an integer. The BER compressed
(F) Only hard references may be blessed. This is how Perl "enforces"
encapsulation of objects. See L<perlobj>.
+=item Can't "break" in a loop topicalizer
+
+(F) You called C<break>, but you're in a C<foreach> block rather than
+a C<given> block. You probably meant to use C<next> or C<last>.
+
+=item Can't "break" outside a given block
+
+(F) You called C<break>, but you're not inside a C<given> block.
+
=item Can't call method "%s" in empty package "%s"
(F) You called a method correctly, and it correctly indicated a package
(F) Certain types of SVs, in particular real symbol table entries
(typeglobs), can't be forced to stop being what they are.
+=item Can't "continue" outside a when block
+
+(F) You called C<continue>, but you're not inside a C<when>
+or C<default> block.
+
=item Can't create pipe mailbox
(P) An error peculiar to VMS. The process is suffering from exhausted
found in the PATH, or at least not with the correct permissions. The
script exists in the current directory, but PATH prohibits running it.
-=item Can't find %s property definition %s
-
-(F) You may have tried to use C<\p> which means a Unicode property (for
-example C<\p{Lu}> is all uppercase letters). If you did mean to use a
-Unicode property, see L<perlunicode> for the list of known properties.
-If you didn't mean to use a Unicode property, escape the C<\p>, either
-by C<\\p> (just the C<\p>) or by C<\Q\p> (the rest of the string, until
-possible C<\E>).
-
=item Can't find string terminator %s anywhere before EOF
(F) Perl strings can stretch over multiple lines. This message means
unseen whitespace before or after your closing tag. A good programmer's
editor will have a way to help you find these characters.
+=item Can't find Unicode property definition "%s"
+
+(F) You may have tried to use C<\p> which means a Unicode property (for
+example C<\p{Lu}> is all uppercase letters). If you did mean to use a
+Unicode property, see L<perlunicode> for the list of known properties.
+If you didn't mean to use a Unicode property, escape the C<\p>, either
+by C<\\p> (just the C<\p>) or by C<\Q\p> (the rest of the string, until
+possible C<\E>).
+
=item Can't fork
(F) A fatal error occurred while trying to fork while opening a
you tried to jump out of a sort() block or subroutine, which is a no-no.
See L<perlfunc/goto>.
-=item Can't goto subroutine from an eval-string
+=item 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).
+
+=item Can't goto subroutine from an eval-%s
(F) The "goto subroutine" call can't be used to jump out of an eval
-"string". (You can use it to jump out of an eval {BLOCK}, but you
-probably don't want to.)
+"string" or block.
=item Can't goto subroutine outside a subroutine
inner curlies will be considered a block that loops once. See
L<perlfunc/last>.
+=item 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.
+
=item Can't localize lexical variable %s
(F) You used local on a variable name that was previously declared as a
are a misprint in a function/method name or a failure to C<AutoSplit>
the file, say, by doing C<make install>.
+=item 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, C<foo.so> or C<bar.dll>, but the L<DynaLoader> module was
+unable to locate this library. See L<DynaLoader>.
+
=item Can't locate object method "%s" via package "%s"
(F) You called a method correctly, and it correctly indicated a package
(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 C<`which $scriptname`>.
+
=item Can't read CRTL environ
(S) A warning peculiar to VMS. Perl tried to read an element of %ENV
or define F<PERL_ENV_TABLES> (see L<perlvms>) so that environ is not
searched.
-=item Can't redefine active sort subroutine %s
-
-(F) Perl optimizes the internal handling of sort subroutines and keeps
-pointers into them. You tried to redefine one such sort subroutine when
-it was currently active, which is not allowed. If you really want to do
-this, you should write C<sort { &func } @x> instead of C<sort func @x>.
-
=item Can't "redo" outside a loop block
(F) A "redo" statement was executed to restart the current block, but
(F) You tried to unshift an "unreal" array that can't be unshifted, such
as the main Perl stack.
-=item Can't upgrade that kind of scalar
+=item 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.
-=item Can't upgrade to undef
-
-(P) The undefined SV is the bottom of the totem pole, in the scheme of
-upgradability. Upgrading to undef indicates an error in the code
-calling sv_upgrade.
-
-=item 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.
-
=item Can't use anonymous symbol table for method lookup
(F) The internal routine that does method lookup was handed a symbol
have variables in your program that looked like magical variables but
weren't.
+=item 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.
+
=item Can't use "my %s" in sort comparison
(F) The global variables $a and $b are reserved for sort comparisons.
(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 an array reference, or anything else subscriptable.
+didn't look like a hash or array reference, or anything else subscriptable.
=item Can't use \%c to mean $%c in expression
value that prints out looking like SCALAR(0xdecaf). Use the $1 form
instead.
+=item Can't use "when" outside a topicalizer
+
+(F) You have used a when() block that is neither inside a C<foreach>
+loop nor a C<given> block. (Note that this error is issued on exit
+from the C<when> block, so you won't get the error if the match fails,
+or if you use an explicit C<continue>.)
+
=item Can't weaken a nonreference
(F) You attempted to weaken something that was not a reference. Only
with an assignment operator, which implies modifying the value itself.
Perhaps you need to copy the value to a temporary, and repeat that.
-=item Character in "C" format wrapped in pack
+=item Character in 'C' format wrapped in pack
(W pack) You said
If you actually want to pack Unicode codepoints, use the C<"U"> format
instead.
-=item Character in "c" format wrapped in pack
+=item 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, C<U0>-mode expects
+all values to fall in the interval [0, 255], so Perl behaved as if you
+meant:
+
+ pack("U0W", $x & 255)
+
+=item Character in 'c' format wrapped in pack
(W pack) You said
If you actually want to pack Unicode codepoints, use the C<"U"> format
instead.
+=item 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}")
+
+=item 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")
+
+=item 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")
+
=item close() on unopened filehandle %s
(W unopened) You tried to close a filehandle that was never opened.
+=item 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.
+
=item Code missing after '/'
(F) You had a (sub-)template that ends with a '/'. There must be another
corresponding C<overload> or C<charnames> pragma? See L<charnames> and
L<overload>.
+=item 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 C<\N{...}> escape. Perhaps you
+forgot to load the corresponding C<charnames> pragma?
+See L<charnames>.
+
+
=item Constant is not %s reference
(F) A constant value (perhaps declared using the C<use constant> pragma)
long for Perl to handle. You have to be seriously twisted to write code
that triggers this error.
+=item Deprecated use of my() in false conditional
+
+(D deprecated) You used a declaration similar to C<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 C<state> variables to
+have lexicals that are initialized only once (see L<feature>):
+
+ sub f { state $x; return $x++ }
+
=item DESTROY created new reference to dead object '%s'
(F) A DESTROY() method created a new reference to the object which is
(W misc) You used the obsolescent C<dump()> built-in function, without fully
qualifying it as C<CORE::dump()>. Maybe it's a typo. See L<perlfunc/dump>.
+=item dump is not supported
+
+(F) Your machine doesn't support dump/undump.
+
=item Duplicate free() ignored
(S malloc) An internal routine called free() on something that had
assertion, but that construct is only allowed when the C<use re 'eval'>
pragma is in effect. See L<perlre/(?{ code })>.
+=item 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.
+
=item Excessively long <> operator
(F) The contents of a <> operator may not exceed the maximum size of a
=item %s failed--call queue aborted
-(F) An untrapped exception was raised while executing a CHECK, INIT, or
-END subroutine. Processing of the remainder of the queue of such
-routines has been prematurely ended.
+(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.
=item False [] range "%s" in regex; marked by <-- HERE in m/%s/
(F) Your machine apparently doesn't implement fcntl(). What is this, a
PDP-11 or something?
+=item 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
+C<u63> as format.
+
=item Filehandle %s opened only for input
(W io) You tried to write on a read-only filehandle. If you intended
=item 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 occured because you closed STDOUT or STDERR
+as STDOUT or STDERR. This occurred because you closed STDOUT or STDERR
previously.
=item 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 occured because you closed STDIN previously.
+as STDIN. This occurred because you closed STDIN previously.
=item Final $ should be \$ or $name
names (like C<$A::B>). You've exceeded Perl's limits. Future versions
of Perl are likely to eliminate these arbitrary limitations.
+=item Ignoring %s in character class in regex; marked by <-- HERE in m/%s/
+
+(W) Named unicode character escapes (\N{...}) may return multi-char
+or zero length sequences. 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.
+
=item Illegal binary digit %s
(F) You used a digit other than 0 or 1 in a binary number.
(F) When using the C<sub> keyword to construct an anonymous subroutine,
you must always specify a block of code. See L<perlsub>.
+=item Illegal declaration of subroutine %s
+
+(F) A subroutine was not declared correctly. See L<perlsub>.
+
=item Illegal division by zero
(F) You tried to divide a number by 0. Either something was wrong in
=item Illegal switch in PERL5OPT: %s
(X) The PERL5OPT environment variable may only be used to set the
-following switches: B<-[DIMUdmtw]>.
+following switches: B<-[CDIMUdmtwA]>.
=item Ill-formed CRTL environ value "%s"
Unicode code points, and encoded in EBCDIC as UTF-EBCDIC. The UTF-EBCDIC
encoding is limited to code points no larger than 2147483647 (0x7FFFFFFF).
+=item 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.
+
=item Insecure dependency in %s
(F) You tried to do something that the tainting mechanism didn't like.
(F) You can't use system(), exec(), or a piped open in a setuid or
setgid script if C<$ENV{PATH}> contains a directory that is writable by
-the world. See L<perlsec>.
+the world. Also, the PATH must not contain any relative directory.
+See L<perlsec>.
=item Insecure $ENV{%s} while running %s
internally--subject to loss of precision errors in subsequent
operations.
+=item Integer overflow in format string for %s
+
+(F) The indexes and widths specified in the format string of C<printf()>
+or C<sprintf()> are too large. The numbers must not overflow the size of
+integers for your architecture.
+
=item Integer overflow in version
(F) Some portion of a version initialization is too large for the
(W printf) Perl does not understand the given format conversion. See
L<perlfunc/sprintf>.
+=item Invalid escape in the specified encoding in regex; marked by <-- HERE in m/%s/
+
+(W regexp) The numeric escape (for example C<\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.
+
=item Invalid [] range "%s" in regex; marked by <-- HERE in m/%s/
(F) The range specified in a character class had a minimum character
been removed as of 5.9.0 and is no longer supported. You should use the
C<//m> and C<//s> regexp modifiers instead.
+=item $# is no longer supported
+
+(D deprecated) The special variable C<$#>, 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.
+
=item `%s' is not a code reference
(W overload) The second (fourth, sixth, ...) argument of overload::constant
=item length/code after end of string in unpack
-(F) While unpacking, the string buffer was alread used up when an 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 L<perlfunc/pack>.
to check the return value of your socket() call? See
L<perlfunc/listen>.
-=item Lookbehind longer than %d not implemented in regex; marked by <-- HERE in m/%s/
+=item 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. The <-- HERE
-shows in the regular expression about where the problem was discovered.
+handle. This restriction may be eased in a future release.
=item lstat() on filehandle %s
=item Malformed UTF-8 character (%s)
-Perl detected something that didn't comply with UTF-8 encoding rules.
+(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 C<:encoding(UTF-8)> PerlIO layer for input, invalid byte
+sequences are handled gracefully, but if you use C<:utf8>, the flag is
+set without validating the data, possibly resulting in this error
+message.
-One possible cause is that you read in data that you thought to be in
-UTF-8 but it wasn't (it was for example legacy 8-bit data). Another
-possibility is careless use of utf8::upgrade().
+See also L<Encode/"Handling Malformed Data">.
=item Malformed UTF-16 surrogate
Perl thought it was reading UTF-16 encoded character data but while
doing it Perl met a malformed Unicode surrogate.
+=item 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.
+
+=item 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.
+
+=item 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.
+
+=item Maximal count of pending signals (%s) exceeded
+
+(F) Perl aborted due to a too important 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 L<perlipc/"Deferred Signals (Safe Signals)">.)
+
=item %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
(W syntax) An underscore (underbar) in a numeric constant did not
separate two digits.
+=item Missing argument to -%c
+
+(F) The argument to the indicated command line switch must follow
+immediately after the switch, without intervening spaces.
+
=item Missing %sbrace%s on \N{}
(F) Wrong syntax of character name literal C<\N{charname}> within
(W syntax) Multidimensional arrays aren't written like C<$foo[1,2,3]>.
They're written like C<$foo[1][2][3]>, as in C.
-=item '/' must be followed by 'a*', 'A*' or 'Z*'
-
-(F) You had a pack template indicating a counted-length string,
-Currently the only things that can have their length counted are a*, A*
-or Z*. See L<perlfunc/pack>.
-
=item '/' must follow a numeric type in unpack
(F) You had an unpack template that contained a '/', but this did not
(S internal) The symbol in question was declared but somehow went out of
scope before it could possibly have been used.
-=item Newline in left-justified string for %s
-
-(W printf) There is a newline in a string to be left justified by
-C<printf> or C<sprintf>.
-
-The padding spaces will appear after the newline, which is probably not
-what you wanted. Usually you should remove the newline from the string
-and put formatting characters in the C<sprintf> format.
-
=item No %s allowed while running setuid
(F) Certain operations are deemed to be too insecure for a setuid or
=item No DB::DB routine defined
(F) The currently executing code was compiled with the B<-d> switch, but
-for some reason the perl5db.pl file (or some facsimile thereof) didn't
-define a routine to be called at the beginning of each statement. Which
-is odd, because the file should have been required automatically, and
-should have blown up the require if it didn't parse right.
+for some reason the current debugger (e.g. F<perl5db.pl> or a C<Devel::>
+module) didn't define a routine to be called at the beginning of each
+statement.
=item 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 L<SDBM_File>.
-=item No DBsub routine
+=item No DB::sub routine defined
-(F) The currently executing code was compiled with the B<-d> switch,
-but for some reason the perl5db.pl file (or some facsimile thereof)
-didn't define a DB::sub routine to be called at the beginning of each
-ordinary subroutine call.
+(F) The currently executing code was compiled with the B<-d> switch, but
+for some reason the current debugger (e.g. F<perl5db.pl> or a C<Devel::>
+module) didn't define a C<DB::sub> routine to be called at the beginning
+of each ordinary subroutine call.
=item No B<-e> allowed in setuid scripts
(F) Configure didn't find anything resembling the setreuid() call for
your system.
-=item No space allowed after -%c
-
-(F) The argument to the indicated command line switch must follow
-immediately after the switch, without intervening spaces.
-
=item No %s specified for -%c
(F) The indicated command line switch needs a mandatory argument, but
you haven't specified one.
+=item 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 L<fields> pragma.
+
=item No such class %s
(F) You provided a class qualifier in a "my" or "our" declaration, but
F<SYS$TIMEZONE_DIFFERENTIAL> to translate to the number of seconds which
need to be added to UTC to get local time.
+=item 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 L<perlfunc/select>
+
=item Null filename used
(F) You can't require the null filename, especially because on many
=item Offset outside string
-(F) You tried to do a read/write/send/recv operation with an offset
-pointing outside the buffer. This is difficult to imagine. The sole
-exception to this is that C<sysread()>ing past the buffer will extend
-the buffer and zero pad the new area.
+(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
+C<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).
=item %s() on unopened %s
(S internal) An internal warning that the grammar is screwed up.
-=item Operation `%s': no method found, %s
+=item 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.
+
+=item 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.
+
+=item 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
the current limits and change them, and in ksh/bash/zsh use C<ulimit -a>
and C<ulimit -d n>, respectively.
+=item 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.
+
=item Out of memory during "large" request for %s
(F) The malloc() function returned 0, indicating there was insufficient
the request was judged large enough (compile-time default is 64K), so a
possibility to shut down by trapping this error is granted.
-=item 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.
-
=item Out of memory during request for %s
(X|F) The malloc() function returned 0, indicating there was
parsing, but realloc() wouldn't give it more memory, virtual or
otherwise.
+=item '.' 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.
+
=item '@' outside of string in unpack
(F) You had a template that specified an absolute position outside
the string being unpacked. See L<perlfunc/pack>.
+=item '@' 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 L<perlfunc/pack>.
+
=item %s package attribute may clash with future reserved word: %s
(W reserved) A lowercase attribute name was used that had a
(P) An internal error.
+=item 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.
+
=item panic: ck_grep
(P) Failed an internal consistency check trying to compile a grep.
(P) The internal do_trans routines were called with invalid operational
data.
+=item panic: fold_constants JMPENV_PUSH returned %d
+
+(P) While attempting folding constants an exception other than an C<eval>
+failure was caught.
+
=item panic: frexp
(P) The library function frexp() failed, making printf("%f") impossible.
(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.
+=item 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.
+
=item panic: INTERPCASEMOD
(P) The lexer got into a bad state at a case modifier.
(P) Something requested a negative number of bytes of malloc.
-=item panic: mapstart
-
-(P) The compiler is screwed up with respect to the map() function.
-
=item panic: memory wrap
(P) Something tried to allocate more memory than possible.
-=item panic: null array
-
-(P) One of the internal array routines was passed a null AV pointer.
-
=item panic: pad_alloc
(P) The compiler got confused about which scratch pad it was allocating
(P) The compiler attempted to do a goto, or something weird like that.
+=item 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.
+
=item panic: utf16_to_utf8: odd bytelen
(P) Something tried to call utf16_to_utf8 with an odd (as opposed
(P) The lexer got into a bad state while processing a case modifier.
+=item 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.
+
=item Parentheses missing around "%s" list
(W parenthesis) You said something like
"Can't locate object method \"%s\" via package \"%s\"". It often means
that a method requires a package that has not been loaded.
-=item Perl %s required--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 L<perlfunc/require>.
-
=item Perl_my_%s() not available
(F) Your platform has very uncommon byte-order and integer size,
conversion functions. This is only a problem when you're using the
'<' or '>' modifiers in (un)pack templates. See L<perlfunc/pack>.
+=item Perl %s required--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 L<perlfunc/require>.
+
=item PERL_SH_DIR too long
(F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the
literal @foo, then write it as \@foo; otherwise find out what happened
to the array you apparently lost track of.
-=item Possible Y2K bug: %s
-
-(W y2k) You are concatenating the number 19 with another number, which
-could be a potential Year 2000 problem.
-
=item pragma "attrs" is deprecated, use "sub NAME : ATTRS" instead
(D deprecated) You have written something like this:
One possible workaround is to force Perl to use magical string increment
by prepending "0" to your numbers.
+=item 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.
+
=item readline() on closed filehandle %s
(W closed) The filehandle you're reading from got itself closed sometime
The <-- HERE shows in the regular expression about where the problem was
discovered.
+=item Reference to nonexistent or unclosed group in regex; marked by <-- HERE in m/%s/
+
+(F) You used something like C<\g{-7}> in your regular expression, but there are
+not at least seven sets of closed capturing parentheses in the expression before
+where the C<\g{-7}> was located.
+
+The <-- HERE shows in the regular expression about where the problem was
+discovered.
+
+=item Reference to nonexistent named group in regex; marked by <-- HERE in m/%s/
+
+(F) You used something like C<\k'NAME'> or C<< \k<NAME> >> in your regular
+expression, but there is no corresponding named capturing parentheses such
+as C<(?'NAME'...)> or C<(?<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.
+
+=item (?(DEFINE)....) does not allow branches in regex; marked by <-- HERE in m/%s/
+
+(F) You used something like C<(?(DEFINE)...|..)> which is illegal. The
+most likely cause of this error is that you left out a parenthesis inside
+of the C<....> part.
+
+The <-- HERE shows in the regular expression about where the problem was
+discovered.
+
=item regexp memory corruption
(P) The regular expression engine got confused by what the regular
=item Repeated format line will never terminate (~~ and @# incompatible)
-(F) Your format containes the ~~ repeat-until-blank sequence and a
+(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 L<perlform>.
(W syntax) You wrote your assignment operator backwards. The = must
always comes last, to avoid ambiguity with subsequent unary operators.
+=item 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.
+
=item Runaway format
(F) Your format contained the ~~ repeat-until-blank sequence, but it
in Perl 5.9.0 or later that uses the // as the I<defined-or> can be
misparsed by pre-5.9.0 Perls as a non-terminated search pattern.
+=item Search pattern not terminated or ternary operator parsed as search pattern
+
+(F) The lexer couldn't find the final delimiter of a C<?PATTERN?>
+construct.
+
+The question mark is also used as part of the ternary operator (as in
+C<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. C<(foo) ? 0 : 1>.
+
=item %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.
+=item 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.
+
=item select not implemented
(F) This machine doesn't implement the select() system call.
<-- HERE shows in the regular expression about where the problem was
discovered. See L<perlre>.
+=item 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.
+
=item Sequence (?#... not terminated in regex; marked by <-- HERE in m/%s/
(F) A regular expression comment must be terminated by a closing
(F) The setuid emulator won't run a script that is writable by the
world, because the world might have written on it already.
+=item 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.
+
=item shm%s not implemented
(F) You don't have System V shared memory IPC on your system.
iterate more times than there are characters of input, which is what
happened.) See L<perlfunc/split>.
+=item State variable %s will be reinitialized
+
+(W misc) You're declaring a C<state> variable inside a list. The list
+assignment will be treated by perl as a regular assignment, which means
+that the C<state> variable will be reinitialized each time the statement
+is run. The solution to have it initialized only once is to write the
+assignment on its own line, as in:
+
+ state $var = 42;
+
=item Statement unlikely to be reached
(W exec) You did an exec() with some statement after it other than a
(W unopened) You tried to use the stat() function on a filehandle that
was either never opened or has since been closed.
-=item Stub found while resolving method `%s' overloading %s
+=item Stub found while resolving method "%s" overloading "%s"
(P) Overloading resolution over @ISA tree may be broken by importation
stubs. Stubs should never be implicitly created, but explicit calls to
(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
-L<perlop/"Quote and Quote-like Operators">.
+L<perlop/"Regexp Quote-Like Operators">.
=item Substitution pattern not terminated
(F) Your Perl was compiled with B<-D>SETUID_SCRIPTS_ARE_SECURE_NOW, but
a version of the setuid emulator somehow got run anyway.
+=item 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.
+
=item 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
(W unopened) You tried to use the tell() function on a filehandle that
was either never opened or has since been closed.
+=item 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.
+
=item That use of $[ is unsupported
(F) Assignment to C<$[> is now strictly circumscribed, and interpreted
=item The 'unique' attribute may only be applied to 'our' variables
-(F) Currently this attribute is not supported on C<my> or C<sub>
-declarations. See L<perlfunc/our>.
+(F) This attribute was never supported on C<my> or C<sub> declarations.
=item This Perl can't reset CRTL environ elements (%s)
=item thread failed to start: %s
-(F) The entry point function of threads->create() failed for some reason.
+(W threads)(S) The entry point function of threads->create() failed for some reason.
=item times not implemented
(F) Your version of the C library apparently doesn't do times(). I
suspect you're not running on Unix.
+=item "-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
+B<-T> option, but Perl was not invoked with B<-T> in its command line.
+This is an error because, by the time Perl discovers a B<-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 B<-T> option is a part of Perl's first
+argument: e.g. change C<perl -n -T> to C<perl -T -n>.
+
+If the Perl script is being executed as C<perl scriptname>, then the
+B<-T> option must appear on the command line: C<perl -T scriptname>.
+
=item To%s: illegal mapping '%s'
(F) You tried to define a customized To-mapping for lc(), lcfirst,
=item Too deeply nested ()-groups
-(F) Your template contains ()-groups with a ridiculously deep nesting level.
+(F) Your template contains ()-groups with a ridiculously deep nesting level.
=item Too few args to syscall
=item Too late for "-%s" option
(X) The #! line (or local equivalent) in a Perl script contains the
-B<-M> or B<-m> option. This is an error because B<-M> and B<-m> options
+B<-M>, B<-m> or B<-C> option. This is an error because those options
are not intended for use inside scripts. Use the C<use> pragma instead.
-=item Too late for "B<-T>" option
-
-(X) The #! line (or local equivalent) in a Perl script contains the
-B<-T> option, but Perl was not invoked with B<-T> in its command line.
-This is an error because, by the time Perl discovers a B<-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 B<-T> option is a part of Perl's first
-argument: e.g. change C<perl -n -T> to C<perl -T -n>.
-
-If the Perl script is being executed as C<perl scriptname>, then the
-B<-T> option must appear on the command line: C<perl -T scriptname>.
-
=item Too late to run %s block
(W void) A CHECK or INIT block is being defined during run time proper,
Note that if you want to enable a warnings category registered by a module
(e.g. C<use warnings 'File::Find'>), you must have imported this module
+
+=item Unknown verb pattern '%s' in regex; marked by <-- HERE in m/%s/
+
+(F) You either made a typo or have incorrectly put a C<*> quantifier
+after an open brace in your pattern. Check the pattern and review
+L<perlre> for details on legal verb patterns.
+
first.
=item unmatched [ in regex; marked by <-- HERE in m/%s/
in your Perl script (or eval). Perhaps you tried to run a compressed
script, a binary program, or a directory as a Perl program.
-=item /%s/: Unrecognized escape \\%c in character class passed through
+=item 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.
+The <-- HERE shows in the regular expression about where the
+escape was discovered.
=item Unrecognized escape \\%c passed through
(W misc) You used a backslash-character combination which is not
-recognized by Perl.
+recognized by Perl. The character was understood literally.
=item 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. This combination appears in an interpolated variable or
-a C<'>-delimited regular expression. The character was understood
-literally. The <-- HERE shows in the regular expression about where the
+recognized by Perl. The character was understood literally.
+The <-- HERE shows in the regular expression about where the
escape was discovered.
=item Unrecognized signal name "%s"
compressed integer format and could not be converted to an integer.
See L<perlfunc/pack>.
+=item Unterminated verb pattern in regex; marked by <-- HERE in m/%s/
+
+(F) You used a pattern of the form C<(*VERB)> but did not terminate
+the pattern with a C<)>. Fix the pattern and retry.
+
+=item Unterminated verb pattern argument in regex; marked by <-- HERE in m/%s/
+
+(F) You used a pattern of the form C<(*VERB:ARG)> but did not terminate
+the pattern with a C<)>. Fix the pattern and retry.
+
+=item 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.
+
=item Unterminated <> operator
(F) The lexer saw a left angle bracket in a place where it was expecting
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() ;
+ 1 while sub_with_side_effects();
String constants that would normally evaluate to 0 or 1 are warned
about.
(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.
-=item Use of $# is deprecated
-
-(D deprecated) This was an ill-advised attempt to emulate a poorly
-defined B<awk> feature. Use an explicit printf() or sprintf() instead.
-
=item Use of %s is deprecated
(D deprecated) The construct indicated is no longer recommended for use,
it already went past any symlink you are presumably trying to look for.
The operation returned C<undef>. Use a filename instead.
-=item Deprecated use of my() in false conditional
-
-(D deprecated) You used a declaration similar to C<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 $x++ } }
-
=item Use of "package" with no arguments is deprecated
(D deprecated) You used the C<package> keyword without specifying a package
that module. It usually means you put the wrong funny character on the
front of your variable.
-=item Variable length lookbehind not implemented in regex; marked by <-- HERE in m/%s/
+=item Variable length lookbehind not implemented in m/%s/
(F) Lookbehind is allowed only for subexpressions whose length is fixed and
-known at compile time. The <-- HERE shows in the regular expression about
-where the problem was discovered. See L<perlre>.
+known at compile time. See L<perlre>.
=item "%s" variable %s masks earlier declaration in same %s
reference variables in outer subroutines are created, they
are automatically rebound to the current values of such variables.
+=item Verb pattern '%s' has a mandatory argument in regex; marked by <-- HERE in m/%s/
+
+(F) You used a verb pattern that requires an argument. Supply an argument
+or check that you are using the right verb.
+
+=item Verb pattern '%s' may not have an argument in regex; marked by <-- HERE in m/%s/
+
+(F) You used a verb pattern that is not allowed an argument. Remove the
+argument or check that you are using the right verb.
+
=item Version number must be a constant number
(P) The attempt to translate a C<use Module n.n LIST> statement into
its equivalent C<BEGIN> block found an internal inconsistency with
the version number.
+=item Version string '%s' contains invalid data; ignoring: '%s'
+
+(W misc) The version string contains invalid characters at the end, which
+are being ignored.
+
=item v-string in use/require is non-portable
(W portable) The use of v-strings is non-portable to older, pre-5.6, Perls.
=item Warning: something's wrong
(W) You passed warn() an empty string (the equivalent of C<warn "">) or
-you called it with no args and C<$_> was empty.
+you called it with no args and C<$@> was empty.
=item Warning: unable to close filehandle %s properly
(F) You had a pack template that specified a relative position after
the end of the string being unpacked. See L<perlfunc/pack>.
-=item Xsub "%s" called in sort
-
-(F) The use of an external subroutine as a sort comparison is not yet
-supported.
-
-=item Xsub called in sort
-
-(F) The use of an external subroutine as a sort comparison is not yet
-supported.
-
=item YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!
(F) And you probably never will, because you probably don't have the
https://perl5.git.perl.org / perl5.git / blobdiff