1 files changed, 4 insertions, 0 deletions
diff --git a/regcomp.c b/regcomp.c
index 4c34b59c61..5dad7d78e2 100644
--- a/regcomp.c
+++ b/regcomp.c
@@ -697,6 +697,10 @@ I32 *flagp;
 	*flagp = flags;
 	return(ret);
     }
+
+    if (!(flags&HASWIDTH) && op != '?')
+      FAIL("regexp *+ operand could be empty");
+
     nextchar();
 
     *flagp = (op != '+') ? (WORST|SPSTART) : (WORST|HASWIDTH);