From 12e90334e0f9c18a7d10911af74266d96dba91f1 Mon Sep 17 00:00:00 2001
From: William Smith <wsmith1@mail.ru>
Date: Sun, 13 Jan 2013 00:11:01 -0500
Subject: [PATCH] timing: mark alarmed variable volatile

Mark "alarmed" global variable as volatile to prevent
compiler optimizations around it.
---
 include/tropicssl/timing.h | 2 +-
 library/timing.c           | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/tropicssl/timing.h b/include/tropicssl/timing.h
index f1677f5..59ed5f2 100644
--- a/include/tropicssl/timing.h
+++ b/include/tropicssl/timing.h
@@ -46,7 +46,7 @@ struct hr_time {
 extern "C" {
 #endif
 
-	extern int alarmed;
+	extern volatile int alarmed;
 
 	/**
 	 * \brief          Return the CPU cycle counter value
diff --git a/library/timing.c b/library/timing.c
index 1746f88..22c1823 100644
--- a/library/timing.c
+++ b/library/timing.c
@@ -164,7 +164,7 @@ unsigned long hardclock(void)
 #endif /* AMD64   */
 #endif /* i586+   */
 
-int alarmed = 0;
+volatile int alarmed = 0;
 
 #if defined(WIN32)
 
-- 
2.11.4.GIT