From 5e4214cee4f74d25f1d89dc1c95dc247ed20b6c8 Mon Sep 17 00:00:00 2001
From: "zhanyong.wan" <zhanyong.wan@861a406c-534a-0410-8894-cb66d6ee9925>
Date: Thu, 8 Jul 2010 21:44:59 +0000
Subject: Makes gtest_break_on_failure_unittest work on minGW (by vladl);
 improves the NULL-dereferencing hack to work with LLVM (by chandlerc).

---
 src/gtest.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/gtest.cc b/src/gtest.cc
index cb2c34c7..9855f53d 100644
--- a/src/gtest.cc
+++ b/src/gtest.cc
@@ -3608,7 +3608,11 @@ void UnitTest::AddTestPartResult(TestPartResult::Type result_type,
       // the --gtest_catch_exceptions flags are specified.
       DebugBreak();
 #else
-      *static_cast<int*>(NULL) = 1;
+      // Dereference NULL through a volatile pointer to prevent the compiler
+      // from removing. We use this rather than abort() or __builtin_trap() for
+      // portability: Symbian doesn't implement abort() well, and some debuggers
+      // don't correctly trap abort().
+      *static_cast<volatile int*>(NULL) = 1;
 #endif  // GTEST_OS_WINDOWS
     } else if (GTEST_FLAG(throw_on_failure)) {
 #if GTEST_HAS_EXCEPTIONS
-- 
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