=item %s argument is not a HASH or ARRAY element
-(F) The argument to exists() must be a hash or array element, such as:
+(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
=item %s argument is not a HASH or ARRAY element or slice
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 Illegal switch in PERL5OPT: %s
(X) The PERL5OPT environment variable may only be used to set the
-following switches: B<-[CDIMUdmtwA]>.
+following switches: B<-[CDIMUdmtw]>.
=item Ill-formed CRTL environ value "%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.
+=item 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 C<++> or C<--> 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 L<Math::BigInt> explicitly.
+
=item lstat() on filehandle %s
(W io) You tried to do an lstat on a filehandle. What did you mean
(F) The unpack format P must have an explicit size, not "*".
-=item B<-P> not allowed for setuid/setgid script
-
-(F) The script would have to be opened by the C preprocessor by name,
-which provides a race condition that breaks security.
-
=item POSIX class [:%s:] unknown in regex; marked by <-- HERE in m/%s/
(F) The class in the character class [: :] syntax is unknown. The <-- HERE
(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) or with strictly negative integers (relative
backreferences), but using 0 does not make sense.
=item Reference to nonexistent group in regex; marked by <-- HERE in m/%s/
If you really do mean it, explicitly numify your reference, like so:
C<$array[0+$ref]>. This warning is not given for overloaded objects,
either, because you can overload the numification and stringification
-operators and then you assumedly know what you are doing.
+operators and then you assumably know what you are doing.
=item Use of reserved word "%s" is deprecated
(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.
-If you want your scripts to be backward portable, use the floating
-point version number: for example, instead of C<use 5.6.1> say
-C<use 5.006_001>. This of course won't help: the older Perls
-won't suddenly start understanding newer features, but at least
-they will show a sensible error message indicating the required
-minimum version.
-
=item Warning: something's wrong
(W) You passed warn() an empty string (the equivalent of C<warn "">) or