[test] Name the local variable in the C1XX implementation of DoNotOptmize

Differential Revision: https://reviews.llvm.org/D32510 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@302162 91177308-0d34-0410-b5e6-96231b3b80d8
2017-05-04 15:54:09 +00:00
parent d252306885
commit 49abbf545e
1 changed files with 2 additions and 1 deletions
--- a/test/support/test_macros.h
+++ b/test/support/test_macros.h
@@ -209,7 +209,8 @@ inline void DoNotOptimize(Tp const& value) {
 #include <intrin.h>
 template <class Tp>
 inline void DoNotOptimize(Tp const& value) {
-  const volatile void* volatile = __builtin_addressof(value);
+  const volatile void* volatile unused = __builtin_addressof(value);
+  static_cast<void>(unused);
  _ReadWriteBarrier();
 }
 #endif