Only append ?? match ops to the list used by reset. This saves memory

and time.

p4raw-id: //depot/perl@30857

1 files changed, 5 insertions, 0 deletions

diff --git a/op.h b/op.h
index 0dee522a40..f99cd3bd0a 100644
--- a/op.h
+++ b/op.h
@@ -326,6 +326,11 @@ struct pmop {
     REGEXP *    op_pmregexp;            /* compiled expression */
 #endif
     U32		op_pmflags;
+    /* This field is only needed so that PMOPs can delete themselves from the
+       list held by the stash. In turn, that list is only needed for reset
+       to work correctly, and is now only a list of ops used by ?? matches,
+       which are rare. Hence it would be useful if we could find a way to
+       shave it. */
 #ifdef USE_ITHREADS
     char *	op_pmstashpv;
 #else