Fix compilation  for clang cuda compiler
MODIFY
testing/unittest/runtime_static_assert.h
testing/unittest/runtime_static_assert.h
@@ -72,6 +72,9 @@ namespace unittest
namespace detail
{
+#ifdef __clang__
+ __attribute__((used))
+#endif
__device__ static static_assert_exception* device_exception = NULL;
}

Fix compilation  for clang cuda compiler