================
@@ -0,0 +1,25 @@
+// RUN: %clang_cc1 -std=c++98 %s -triple x86_64-linux-gnu -emit-llvm -o -
-fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s
--check-prefixes CHECK
+// RUN: %clang_cc1 -std=c++11 %s -triple x86_64-linux-gnu -emit-llvm -o -
-fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s
--check-prefixes CHECK
+// RUN: %clang_cc1 -std=c++14 %s -triple x86_64-linux-gnu -emit-llvm -o -
-fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s
--check-prefixes CHECK
+// RUN: %clang_cc1 -std=c++17 %s -triple x86_64-linux-gnu -emit-llvm -o -
-fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s
--check-prefixes CHECK
+// RUN: %clang_cc1 -std=c++20 %s -triple x86_64-linux-gnu -emit-llvm -o -
-fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s
--check-prefixes CHECK
+// RUN: %clang_cc1 -std=c++23 %s -triple x86_64-linux-gnu -emit-llvm -o -
-fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s
--check-prefixes CHECK
+// RUN: %clang_cc1 -std=c++2c %s -triple x86_64-linux-gnu -emit-llvm -o -
-fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s
--check-prefixes CHECK
+
+namespace dr653 { // dr653: 2.7
+
+union U {
+ int a;
+ float b;
+};
+
+void f(U u) {
+ U v;
+ v = u;
----------------
erichkeane wrote:
Can we also test that unions without trivial copy are rejected? It seems to me
that the 'we copy as if via memcpy''s fallout is that we can't copy things that
aren't trivial to copy.
https://github.com/llvm/llvm-project/pull/87876
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