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-rw-r--r--pod/perl588delta.pod9
1 files changed, 9 insertions, 0 deletions
diff --git a/pod/perl588delta.pod b/pod/perl588delta.pod
index 82eb3618ff..ec693da746 100644
--- a/pod/perl588delta.pod
+++ b/pod/perl588delta.pod
@@ -1481,6 +1481,15 @@ but was accidentally omitted from L<perl587delta>).
=head1 Selected Bug Fixes
+=head2 no warnings 'category' works correctly with -w
+
+Previously when running with warnings enabled globally via C<-w>, selective
+disabling of specific warning categories would actually turn off all warnings.
+This is now fixed; now C<no warnings 'io';> will only turn off warnings in the
+C<io> class. Previously it would erroneously turn off all warnings.
+
+This bug fix may cause some programs to start correctly issuing warnings.
+
=head2 Remove over-optimisation
Perl 5.8.4 introduced a change so that assignments of C<undef> to a