1 files changed, 5 insertions, 0 deletions
diff --git a/hv.h b/hv.h
index dee534d9ff..4a2f053ebc 100644
--- a/hv.h
+++ b/hv.h
@@ -56,6 +56,11 @@ struct xpvhv {
 	    U32	xlow;
 	    U32	xhigh;
 	}	xpad_cop_seq;	/* used by pad.c for cop_sequence */
+	struct {
+	    U32 xbm_previous;	/* how many characters in string before rare? */
+	    U8	xbm_flags;
+	    U8	xbm_rare;	/* rarest character in string */
+	}	xbm_s;		/* fields from PVBM */
     }		xnv_u;
     STRLEN	xhv_fill;	/* how full xhv_array currently is */
     STRLEN	xhv_max;	/* subscript of last element of xhv_array */