From 497f8904cb3f90a3abf5340a129811aceb96ee33 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 14 Dec 2012 01:38:14 +0000
Subject: * vm_trace.c (exec_hooks): add volatile to avoid segv.   On test-all
 with -j, it may crash in TH_POP_TAG.   Detailed mechanism is not known but
 this fixes it.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38371 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 vm_trace.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'vm_trace.c')

diff --git a/vm_trace.c b/vm_trace.c
index 717723c635..f5260149b3 100644
--- a/vm_trace.c
+++ b/vm_trace.c
@@ -244,7 +244,7 @@ clean_hooks(rb_hook_list_t *list)
 static int
 exec_hooks(rb_thread_t *th, rb_hook_list_t *list, const rb_trace_arg_t *trace_arg, int can_clean_hooks)
 {
-    int state;
+    volatile int state;
     volatile int raised;
 
     if (UNLIKELY(list->need_clean > 0) && can_clean_hooks) {
@@ -275,6 +275,9 @@ exec_hooks(rb_thread_t *th, rb_hook_list_t *list, const rb_trace_arg_t *trace_ar
     if (raised) {
 	rb_threadptr_set_raised(th);
     }
+    {
+	rb_thread_t volatile *tmp = th;
+    }
 
     return state;
 }
-- 
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