From fbcb1ef0b087db8758800f8343f35034eb035f52 Mon Sep 17 00:00:00 2001
From: Ulya Trofimovich <skvadrik@gmail.com>
Date: Mon, 25 Mar 2019 16:40:04 +0000
Subject: [PATCH] libre2c: free tag history after each step (it's no longer
 needed).

Seems to be a copy-paste error from TDFA implementation, where history
for each state is needed until the end of determinization.
---
 lib/regexec_nfa_posix.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/regexec_nfa_posix.cc b/lib/regexec_nfa_posix.cc
index 64fb2dc8..4d29d8a1 100644
--- a/lib/regexec_nfa_posix.cc
+++ b/lib/regexec_nfa_posix.cc
@@ -64,7 +64,7 @@ int regexec_nfa_posix(const regex_t *preg, const char *string
 
 void closure_posix(psimctx_t &ctx)
 {
-    ctx.history.detach();
+    ctx.history.init();
 
     if (ctx.flags & REG_GTOP) {
         closure_posix_gtop(ctx);
-- 
2.50.1