================
@@ -23,3 +23,29 @@ struct S {
friend class C<Ts>::Nested...; // expected-error {{friend declaration
expands pack 'Ts' that is declared it its own template parameter list}}
};
} // namespace cwg2917
+
+#if __cplusplus >= 202002
+
+namespace std {
+ using size_t = decltype(sizeof(0));
+};
+void *operator new(std::size_t, void *p) { return p; }
+void* operator new[] (std::size_t, void* p) {return p;}
+
+
+namespace cwg2922 { // cwg2922: 20 open 2024-07-10
+union U { int a, b; };
+constexpr U nondeterministic(bool i) {
+ if(i) {
+ U u;
+ new (&u) int();
+ // expected-note@-1 {{placement new would change type of storage from 'U'
to 'int'}}
+ return u;
+ }
+ return {};
+}
+constexpr U _ = nondeterministic(true);
+// expected-error@-1 {{constexpr variable '_' must be initialized by a
constant expression}} \
+// expected-note@-1 {{in call to 'nondeterministic(true)'}}
----------------
Endilll wrote:
```suggestion
// expected-note@-1 {{in call to 'nondeterministic(true)'}}
```
https://github.com/llvm/llvm-project/pull/104586
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