-MO=C falls over on package <none>

[p5sagit/p5-mst-13.2.git] / pod / perldiag.pod

diff --git a/pod/perldiag.pod b/pod/perldiag.pod
index b55c7df..480ab84 100644 (file)
--- a/pod/perldiag.pod
+++ b/pod/perldiag.pod
@@ -182,6 +182,11 @@ spots.  This is now heavily deprecated.
 must either both be scalars or both be lists.  Otherwise Perl won't
 know which context to supply to the right side.
 
+=item 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.
+
 =item Attempt to bless into a reference
 
 (F) The CLASSNAME argument to the bless() operator is expected to be
@@ -1708,6 +1713,16 @@ silently ignored.
 (F) Your machine apparently doesn't implement ioctl(), which is pretty
 strange for a machine that supports C.
 
+=item `%s' is not a code reference
+
+(W) The second (fourth, sixth, ...) argument of overload::constant needs
+to be a code reference. Either an anonymous subroutine, or a reference
+to a subroutine.
+
+=item `%s' is not an overloadable type
+
+(W) You tried to overload a constant type the overload package is unaware of.
+
 =item junk on end of regexp
 
 (P) The regular expression parser is confused.
@@ -1758,7 +1773,7 @@ L<perlsub/"Lvalue subroutines">.
 (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.
-       
+
 =item Malformed PERLLIB_PREFIX
 
 (F) An error peculiar to OS/2.  PERLLIB_PREFIX should be of the form
@@ -1865,6 +1880,14 @@ catches that.  But an easy way to do the same thing is:
 
 Another way is to assign to a substr() that's off the end of the string.
 
+Yet another way is to assign to a C<foreach> loop I<VAR> when I<VAR>
+is aliased to a constant in the look I<LIST>:
+
+        $x = 1;
+        foreach my $n ($x, 2) {
+            $n *= 2; # modifies the $x, but fails on attempt to modify the 2
+        } 
+
 =item Modification of non-creatable array value attempted, %s
 
 (F) You tried to make an array value spring into existence, and the
@@ -2223,6 +2246,11 @@ L<perlport> for more on portability concerns.
 
 See also L<perlport> for writing portable code.
 
+=item Odd number of arguments for overload::constant
+
+(W) The call to overload::constant contained an odd number of arguments.
+The arguments should come in pairs.
+
 =item Odd number of elements in hash assignment
 
 (W misc) You specified an odd number of elements to initialize a hash,
@@ -2778,7 +2806,7 @@ Doing so has no effect.
 (W internal) The internal sv_replace() function was handed a new SV with
 a reference count of other than 1.
 
-=item Reference to nonexistant group before << HERE in regex m/%s/
+=item Reference to nonexistent group before << HERE in regex m/%s/
 
 (F) You used something like C<\7> in your regular expression, but there are
 not at least seven sets of capturing parentheses in the expression. If you
@@ -2871,6 +2899,10 @@ filehandle that was either never opened or has since been closed.
 
 (F) This machine doesn't implement the select() system call.
 
+=item Self-ties are not supported
+
+(F) Self-ties are not supported in the current implementation.
+
 =item Semicolon seems to be missing
 
 (W semicolon) A nearby syntax error was probably caused by a missing
@@ -3790,6 +3822,10 @@ but in actual fact, you got
 
 So put in parentheses to say what you really mean.
 
+=item Wide character in %s
+
+(F) Perl met a wide character (>255) when it wasn't expecting one.
+
 =item write() on closed filehandle %s
 
 (W closed) The filehandle you're writing to got itself closed sometime