From 472959f9c20e7aff1776312d6c8e2236a52e29a7 Mon Sep 17 00:00:00 2001
From: shugo <shugo@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 7 Dec 2016 23:27:51 +0000
Subject: Add clang volatile fixes from FreeBSD and NetBSD.

Use volatile instead of optnone to avoid optimization which causes
segmentation faults.
Patch by Dimitry Andric.  [ruby-core:78531] [Bug #13014]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57020 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 thread.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'thread.c')

diff --git a/thread.c b/thread.c
index 1dbb70d2d7..70a438c3b9 100644
--- a/thread.c
+++ b/thread.c
@@ -466,8 +466,8 @@ rb_threadptr_unlock_all_locking_mutexes(rb_thread_t *th)
 void
 rb_thread_terminate_all(void)
 {
-    rb_thread_t *th = GET_THREAD(); /* main thread */
-    rb_vm_t *vm = th->vm;
+    rb_thread_t *volatile th = GET_THREAD(); /* main thread */
+    rb_vm_t *volatile vm = th->vm;
     volatile int sleeping = 0;
 
     if (vm->main_thread != th) {
-- 
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