[libcxx] r324153 - Fix has_unique_object_representation after Clang commit r324134.

[Eric Fiselier via cfe-commits]

Author: ericwf
Date: Fri Feb  2 14:39:59 2018
New Revision: 324153

URL: http://llvm.org/viewvc/llvm-project?rev=324153&view=rev
Log:
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.

Modified:
    libcxx/trunk/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp

Modified: libcxx/trunk/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp?rev=324153&r1=324152&r2=324153&view=diff
==============================================================================
--- libcxx/trunk/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp (original)
+++ libcxx/trunk/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp Fri Feb  2 14:39:59 2018
@@ -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[]>();