[libcxx] r273345 - Guard libc++ assumption about identity hashing in test. Patch from STL at microsoft.com

[Eric Fiselier via cfe-commits]

Author: ericwf
Date: Tue Jun 21 19:53:35 2016
New Revision: 273345

URL: http://llvm.org/viewvc/llvm-project?rev=273345&view=rev
Log:
Guard libc++ assumption about identity hashing in test. Patch from STL at microsoft.com

Modified:
    libcxx/trunk/test/std/utilities/function.objects/unord.hash/integral.pass.cpp

Modified: libcxx/trunk/test/std/utilities/function.objects/unord.hash/integral.pass.cpp
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/std/utilities/function.objects/unord.hash/integral.pass.cpp?rev=273345&r1=273344&r2=273345&view=diff
==============================================================================
--- libcxx/trunk/test/std/utilities/function.objects/unord.hash/integral.pass.cpp (original)
+++ libcxx/trunk/test/std/utilities/function.objects/unord.hash/integral.pass.cpp Tue Jun 21 19:53:35 2016
@@ -16,14 +16,14 @@
 //     size_t operator()(T val) const;
 // };
 
-// Not very portable
-
 #include <functional>
 #include <cassert>
 #include <type_traits>
 #include <cstddef>
 #include <limits>
 
+#include "test_macros.h"
+
 template <class T>
 void
 test()
@@ -37,7 +37,11 @@ test()
     {
         T t(i);
         if (sizeof(T) <= sizeof(std::size_t))
-            assert(h(t) == t);
+        {
+            const std::size_t result = h(t);
+            LIBCPP_ASSERT(result == t);
+            ((void)result); // Prevent unused warning
+        }
     }
 }