(W) A warning (optional).
(D) A deprecation (optional).
- (S) A severe warning (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).
to a reference to a routine that will be called on each warning instead
of printing it. See L<perlvar>.
-Default warnings are always enabled unless they are explicitly disabled
+Severe warnings are always enabled, unless they are explicitly disabled
with the C<warnings> pragma or the B<-X> switch.
Trappable errors may be trapped using the eval operator. See
literals or global values as arguments to the "p" pack() template to
avoid this warning.
+=item Attempt to reload %s aborted.
+
+(F) You tried to load a file with C<use> or C<require> that failed to
+compile once already. Perl will not try to compile this file again
+unless you delete its entry from %INC. See L<perlfunc/require> and
+L<perlvar/%INC>.
+
=item Attempt to set length of freed array
(W) You tried to set the length of an array which has been freed. You
=item 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" or "our" declaration. The semantics may be
+class qualifier in a "my", "our" or "state" declaration. The semantics may be
extended for other types of variables in future.
=item Can't declare %s in "%s"
-(F) Only scalar, array, and hash variables may be declared as "my" or
-"our" variables. They must have ordinary identifiers as names.
+(F) Only scalar, array, and hash variables may be declared as "my", "our" or
+"state" variables. They must have ordinary identifiers as names.
=item Can't do inplace edit: %s is not a regular file
=item Can't localize lexical variable %s
(F) You used local on a variable name that was previously declared as a
-lexical variable using "my". This is not allowed. If you want to
+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.
(F) Only a simple scalar variable may be used as a loop variable on a
foreach.
-=item Can't use global %s in "my"
+=item 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
=item Global symbol "%s" requires explicit package name
-(F) You've said "use strict vars", which indicates that all variables
-must either be lexically scoped (using "my"), declared beforehand using
-"our", or explicitly qualified to say which package the global variable
-is in (using "::").
+(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 "::").
=item glob failed (%s)
=item Ignoring %s in character class in regex; marked by <-- HERE in m/%s/
-(W) Named unicode character escapes (\N{...}) may return multi-char
+(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.
The <-- HERE shows in the regular expression about where the problem was
discovered.
+=item 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 C<state ($a) = 42> as
+C<state $a = 42> to change from list to scalar context. Constructions such
+as C<state (@a) = foo()> will be supported in a future perl release.
+
=item Insecure dependency in %s
(F) You tried to do something that the tainting mechanism didn't like.
=item $* is no longer supported
-(D deprecated) The special variable C<$*>, deprecated in older perls, has
+(S deprecated, syntax) The special variable C<$*>, deprecated in older perls, has
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
+(S deprecated, syntax) The special variable C<$#>, deprecated in older perls, has
been removed as of 5.9.3 and is no longer supported. You should use the
printf/sprintf functions instead.
(F) Lexically scoped subroutines are not yet implemented. Don't try
that yet.
-=item "my" variable %s can't be in a package
+=item "%s" variable %s can't be in a package
(F) Lexically scoped variables aren't in a package, so it doesn't make
sense to try to declare one with a package qualifier on the front. Use
=item No such class %s
-(F) You provided a class qualifier in a "my" or "our" declaration, but
+(F) You provided a class qualifier in a "my", "our" or "state" declaration, but
this class doesn't exist at this point in your program.
=item No such pipe open
my ($foo, $bar) = @_;
-Remember that "my", "our", and "local" bind tighter than comma.
+Remember that "my", "our", "local" and "state" bind tighter than comma.
=item C<-p> destination: %s
(W internal) The internal sv_replace() function was handed a new SV with
a reference count of other than 1.
+=item Reference to invalid group 0
+
+(F) You used C<\g0> or similar in a regular expression. You may refer to
+capturing parentheses only with strictly positive integers (normal
+backreferences) or with stricly negative integers (relative
+backreferences), but using 0 does not make sense.
+
=item Reference to nonexistent group in regex; marked by <-- HERE in m/%s/
(F) You used something like C<\7> in your regular expression, but there are
somehow, or insert an underbar into it. You might also declare it as a
subroutine.
-=item Unrecognized character %s
+=item Unrecognized character %s in column %d
(F) The Perl parser has no idea what to do with the specified character
-in your Perl script (or eval). Perhaps you tried to run a compressed
-script, a binary program, or a directory as a Perl program.
+in your Perl script (or eval) at the specified column. Perhaps you tried
+to run a compressed script, a binary program, or a directory as a Perl program.
=item Unrecognized escape \\%c in character class passed through in regex; marked by <-- HERE in m/%s/
=item "%s" variable %s masks earlier declaration in same %s
-(W misc) A "my" or "our" variable has been redeclared in the current
+(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
=back
+=head1 SEE ALSO
+
+L<warnings>, L<perllexwarn>.
+
=cut
projects / p5sagit/p5-mst-13.2.git / blobdiff