overloading enabled, and it is what is used by the C<Overloaded>
function of module C<overload>).
-The module might issues the following warnings:
+The module might issue the following warnings:
=over 4
(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.
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,