perldelta for c4c61c6

diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index 0ab91dc..9d6f0f1 100644 (file)
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -570,6 +570,12 @@ v5.20.1 as well as here) in which a UTF-8 encoded regular expression
 pattern that contains a single ASCII lowercase letter does not match its
 uppercase counterpart. [perl #122655]
 
+=item *
+
+Constant folding could incorrectly suppress warnings if lexical warnings
+(C<use warnings> or C<no warnings>) were not in effect and C<$^W> were
+false at compile time and true at run time.
+
 =back
 
 =head1 Known Problems