From: K.Kosako <kosako@sofnec.co.jp>
Date: Tue, 2 Apr 2019 07:43:55 +0000 (+0900)
Subject: fix bug of parsing nested quantifiers
X-Git-Tag: v6.9.2_rc2~4
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b931b4380612f32e01f4304e643e0555cb0e4f6f;p=onig

fix bug of parsing nested quantifiers
---

diff --git a/src/regparse.c b/src/regparse.c
index 099f55d..f1deea3 100644
--- a/src/regparse.c
+++ b/src/regparse.c
@@ -8163,8 +8163,8 @@ parse_exp(Node** np, PToken* tok, int term, UChar** src, UChar* end,
       CHECK_NULL_RETURN_MEMERR(qn);
       QUANT_(qn)->greedy = tok->u.repeat.greedy;
       if (group == 2) {
-        target = node_drop_group(*np);
-        *np = NULL_NODE;
+        target = node_drop_group(*tp);
+        *tp = NULL_NODE;
       }
       else {
         target = *tp;
@@ -8189,7 +8189,7 @@ parse_exp(Node** np, PToken* tok, int term, UChar** src, UChar* end,
       if (r == 0) {
         *tp = qn;
       }
-      else if (r == 1) {
+      else if (r == 1) { /* x{1,1} ==> x */
         onig_node_free(qn);
         *tp = target;
       }
@@ -8208,6 +8208,7 @@ parse_exp(Node** np, PToken* tok, int term, UChar** src, UChar* end,
         }
         tp = &(NODE_CAR(tmp));
       }
+      group = 0;
       goto re_entry;
     }
   }