================
@@ -180,3 +200,64 @@ void f() {
} // namespace cwg2881
+namespace cwg2882 { // cwg2882: 2.7 tentatively ready 2024-05-31
+struct C {
+ operator void() = delete;
+ // expected-warning@-1 {{conversion function converting 'cwg2882::C' to
'void' will never be used}}
+ // cxx98-error@-2 {{deleted function definitions are a C++11 extension}}
+};
+
+void f(C c) {
+ (void)c;
+}
+} // namespace cwg2882
+
+namespace cwg2883 { // cwg2883: no tentatively ready 2024-05-31
+#if __cplusplus >= 201103L
+void f() {
+ int x;
+ (void)[&] {
+ return x;
+ };
+}
+#endif
+#if __cplusplus >= 202002L
+struct A {
+ A() = default;
+ A(const A &) = delete; // #cwg2883-A-copy-ctor
+ constexpr operator int() { return 42; }
+};
+void g() {
+ constexpr A a;
+ // FIXME: OK, not odr-usable from a default template argument, and not
odr-used
+ (void)[=]<typename T, int = a> {};
+ // since-cxx20-error@-1 {{call to deleted constructor of 'const A'}}
+ // since-cxx20-note@#cwg2883-A-copy-ctor {{'A' has been explicitly marked
deleted here}}
+}
+#endif
+} // namespace cwg2883
----------------
cor3ntin wrote:
We do emit a diag later https://compiler-explorer.com/z/bd39GcqMP
I think it's still fair to say it's not implemented
https://github.com/llvm/llvm-project/pull/94167
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