[test] Name the local variable in the C1XX implementation of DoNotOpt…

…mize Differential Revision: https://reviews.llvm.org/D32510 llvm-svn: 302162
llvm · May 4, 2017 · d50571b · d50571b
1 parent b92cb07
commit d50571b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/libcxx/test/support/test_macros.h b/libcxx/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