================
@@ -153,16 +153,16 @@ namespace dr1460 { // dr1460: 3.5
namespace Defaulted {
union A { constexpr A() = default; };
union B { int n; constexpr B() = default; };
- // cxx11-17-error@-1 {{defaulted definition of default constructor is not
constexpr}}
+ // cxx11-17-error@-1 {{defaulted definition of default constructor that
marked constexpr but never produces a constant expression is a C++23 extension}}
----------------
Fznamznon wrote:
In C++20 mode such constructor is considered as a valid and producing
`constexpr` due to
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1331r2.pdf , so no
extension warning there.
https://github.com/llvm/llvm-project/pull/77753
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