From 8d0ea13047fb54611425f8f7f84cc529bf08c3b8 Mon Sep 17 00:00:00 2001
From: Hans Wennborg <hans@hanshq.net>
Date: Tue, 6 Feb 2018 13:22:33 +0000
Subject: Merging r324153:
 ------------------------------------------------------------------------
 r324153 | ericwf | 2018-02-02 23:39:59 +0100 (Fri, 02 Feb 2018) | 6 lines

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.
------------------------------------------------------------------------


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/branches/release_60@324345 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../meta.unary.prop/has_unique_object_representations.pass.cpp      | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp b/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp
index e4a3d203c..52100c304 100644
--- a/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp
+++ b/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[]>();
 
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