apply change#4618 again along with Ilya's patch to fix bugs

in it (see change#4622)

p4raw-link: @4622 on //depot/perl: 34baa6c30415f54e9b8c2e622de1e229cf36d781
p4raw-link: @4618 on //depot/perl: f9d9cdce9cbb41baf3d0716ebac8540732d59bf8

p4raw-id: //depot/perl@4669

1 files changed, 1 insertions, 0 deletions

diff --git a/perl.h b/perl.h
index eae26bbd68..dc72ffe0f3 100644
--- a/perl.h
+++ b/perl.h
@@ -1748,6 +1748,7 @@ struct _sublex_info {
 typedef struct magic_state MGS;	/* struct magic_state defined in mg.c */
 
 struct scan_data_t;		/* Used in S_* functions in regcomp.c */
+struct regnode_charclass_class;	/* Used in S_* functions in regcomp.c */
 
 typedef I32 CHECKPOINT;