From 055a59c3ed3ecd8f3cac4aa5496f3d21ab56a131 Mon Sep 17 00:00:00 2001
From: Dan Albert <danalbert@google.com>
Date: Thu, 25 Sep 2014 15:43:48 -0700
Subject: Prevent benchmarks from being optimized away.

Change-Id: I2d27b39ecdfc50e78098314567c295a2f113f8d3
---
 benchmarks/math_benchmark.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'benchmarks')

diff --git a/benchmarks/math_benchmark.cpp b/benchmarks/math_benchmark.cpp
index a9748cd..8d6dd10 100644
--- a/benchmarks/math_benchmark.cpp
+++ b/benchmarks/math_benchmark.cpp
@@ -20,8 +20,8 @@
 #include <math.h>
 
 // Avoid optimization.
-double d;
-double v;
+volatile double d;
+volatile double v;
 
 static void BM_math_sqrt(int iters) {
   StartBenchmarkTiming();
-- 
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