From bebe2c34a592b9bf70881c9c0bd64d9bfee62ec8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafael=20=C3=81vila=20de=20Esp=C3=ADndola?=
 <respindola@mozilla.com>
Date: Tue, 6 Dec 2011 14:26:49 -0500
Subject: [PATCH] Bug 707648 - Only try to init the critical range if we are
 able to walk the stack. r=ehsan.

---
 xpcom/base/nsStackWalk.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xpcom/base/nsStackWalk.cpp b/xpcom/base/nsStackWalk.cpp
index 0cbd5ff09e4..ec1f65a25f5 100644
--- a/xpcom/base/nsStackWalk.cpp
+++ b/xpcom/base/nsStackWalk.cpp
@@ -58,7 +58,7 @@ static CriticalAddress gCriticalAddress;
 #include <dlfcn.h>
 #endif
 
-#ifdef XP_MACOSX
+#if defined(XP_MACOSX) && (defined(__i386) || defined(__ppc__) || defined(HAVE__UNWIND_BACKTRACE))
 #include <pthread.h>
 #include <errno.h>
 #include <CoreServices/CoreServices.h>