================
@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 -std=c++14 -verify -fcxx-exceptions
-Werror=c++14-extensions -Werror=c++20-extensions %s
+
+template <class> struct C {
+ union {
+ int i;
+ };
+ constexpr C() {} // expected-error {{constexpr union constructor that does
not initialize any member is a C++20 extension}}
+};
+constexpr C<int> c;
+
+template <class> class D {
+ union {
+ int i;
+ };
+public:
+ constexpr D() {} // expected-error {{constexpr union constructor that does
not initialize any member is a C++20 extension}}
+};
+constexpr D<int> d;
----------------
shafik wrote:
Please add a newline at the end of the file.
https://github.com/llvm/llvm-project/pull/81042
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