(F) The '!' is allowed in pack() and unpack() only after certain types.
See L<perlfunc/pack>.
+=item Ambiguous -%c() resolved as a file test
+
+(W ambiguous) You used a "-" right in front a call to a subroutine
+that has the same name as a Perl file test (C<r w x o R W X O e z s
+f d l p S u g k b c t T B M A C>).
+
+To disambiguate it as a subroutine call, use either an extra space after
+the "-", C<- f(...)>, or an extra set of parentheses, C<-(f(...))>.
+To disambiguate it as a file test, use an extra space after the operator
+name C<-f (...)>, or add the space and remove the parentheses, C<-f ...>.
+
=item 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
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 %s property definition %s
+
+(F) You may have tried to use C<\p> which means a Unicode property for
+example \p{Lu} is all uppercase letters. Escape the C<\p>, either
+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 run Perl. How to really fix the problem can be found in
L<perllocale> section B<LOCALE PROBLEMS>.
+=item perlio: unknown layer "%s"
+
+(S) 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 C<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.
+
=item Permission denied
(F) The setuid emulator in suidperl decided you were up to no good.
The function indicated isn't implemented on this architecture, according
to the probings of Configure.
-=item The stat preceding C<-l _> wasn't an lstat
+=item 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