[libcxx-commits] [libcxx] [libc++] Implement LWG2991: variant copy constructor missing noexcept(see below) (PR #230241)

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@@ -99,6 +109,28 @@ void makeEmpty(Variant& v) {
 }
 #endif // TEST_HAS_NO_EXCEPTIONS
 
+constexpr void test_copy_noexcept() {
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_nothrow_copy_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TCopy>;
+    static_assert(std::is_nothrow_copy_constructible<TCopy>::value, "");
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KaroliShp wrote:

I placed the checks here deliberately, but I see how that's confusing. I moved the checks next to the types

https://github.com/llvm/llvm-project/pull/230241