Fix has_unique_object_representation after Clang commit r324134.

Clang previously reported an empty union as having a unique object
representation. This was incorrect and was fixed in a recent Clang commit.

This patch fixes the libc++ tests.

llvm-svn: 324153

1 files changed, 4 insertions, 2 deletions

diff --git a/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp b/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp
index e4a3d203ce7..52100c30404 100644
--- a/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp
+++ b/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp
@@ -55,7 +55,8 @@ class NotEmpty
     virtual ~NotEmpty();
 };
 
-union Union {};
+union EmptyUnion {};
+struct NonEmptyUnion {int x; unsigned y;};
 
 struct bit_zero
 {
@@ -84,6 +85,7 @@ int main()
 {
     test_has_not_has_unique_object_representations<void>();
     test_has_not_has_unique_object_representations<Empty>();
+    test_has_not_has_unique_object_representations<EmptyUnion>();
     test_has_not_has_unique_object_representations<NotEmpty>();
     test_has_not_has_unique_object_representations<bit_zero>();
     test_has_not_has_unique_object_representations<Abstract>();
@@ -97,7 +99,7 @@ int main()
 
 
     test_has_unique_object_representations<unsigned>();
-    test_has_unique_object_representations<Union>();
+    test_has_unique_object_representations<NonEmptyUnion>();
     test_has_unique_object_representations<char[3]>();
     test_has_unique_object_representations<char[]>();