From 6a6c89e7f77c8da28c490967f61e1b98681f3f71 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 9 Dec 2015 07:30:44 +0000
Subject: Revert r52995

revert slow atomic operations.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52997 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 regcomp.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

(limited to 'regcomp.c')

diff --git a/regcomp.c b/regcomp.c
index 176aa6b8ef..23cb0ead9a 100644
--- a/regcomp.c
+++ b/regcomp.c
@@ -5663,11 +5663,10 @@ onig_transfer(regex_t* to, regex_t* from)
 extern void
 onig_chain_link_add(regex_t* to, regex_t* add)
 {
-  /* THREAD_ATOMIC_START; */
-  do {
-    REGEX_CHAIN_HEAD(to);
-  } while (IS_NOT_NULL(ATOMIC_PTR_CAS(to->chain, (regex_t* )NULL, add)));
-  /* THREAD_ATOMIC_END; */
+  THREAD_ATOMIC_START;
+  REGEX_CHAIN_HEAD(to);
+  to->chain = add;
+  THREAD_ATOMIC_END;
 }
 
 extern void
-- 
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