document the API signature change for Perl_regexec_flags()

and its related plugin structure pointer

inspired by https://rt.perl.org/Ticket/Display.html?id=121868 which was
also broken by ea3daa5d5f60389b105c00d4f7d05b5c2f2155f2

1 files changed, 7 insertions, 0 deletions

diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index 7a0f8a00cd..4897b268a6 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -1795,6 +1795,13 @@ the string from the passed SV (if any), and would sometimes get it wrong
 
 =item *
 
+The signature of the C<Perl_regexec_flags()> regex function has
+changed; the function pointer C<exec> in the regex engine plugin
+structure has also changed to match.  The C<minend> parameter now has
+type C<SSize_t> to better support 64-bit systems.
+
+=item *
+
 XS code may use various macros to change the case of a character or code
 point (for example C<toLOWER_utf8()>).  Only a couple of these were
 documented until now;