1 files changed, 1 insertions, 0 deletions
diff --git a/thrdvar.h b/thrdvar.h
index 6c48da9901..2cfbfa2dad 100644
--- a/thrdvar.h
+++ b/thrdvar.h
@@ -183,6 +183,7 @@ PERLVAR(Tregstartp,	I32 *)		/* Pointer to startp array. */
 PERLVAR(Tregendp,	I32 *)		/* Ditto for endp. */
 PERLVAR(Treglastparen,	U32 *)		/* Similarly for lastparen. */
 PERLVAR(Tregtill,	char *)		/* How far we are required to go. */
+PERLVAR(Tregcompat1,	char)		/* used to be regprev1 */
 PERLVAR(Treg_start_tmp,	char **)	/* from regexec.c */
 PERLVAR(Treg_start_tmpl,U32)		/* from regexec.c */
 PERLVAR(Tregdata,	struct reg_data *)