[clang] [clang] fix constexpr-unknown handling of self-references. (PR #132990)

@@ -177,3 +177,50 @@ namespace extern_reference_used_as_unknown { int y; constinit int& g = (x,y); // expected-warning {{left operand of comma operator has no effect}} } + +namespace uninit_reference_used { + int y; + constexpr int &r = r; // expected-error {{must be ini

[clang] [Clang] Implement C++26 P2748R5 "Disallow Binding a Returned Glvalue to a Temporary" (PR #89942)

@@ -8340,8 +8340,17 @@ void Sema::checkInitializerLifetime(const InitializedEntity &Entity, << Entity.getType()->isReferenceType() << CLE->getInitializer() << 2 << DiagRange; } else { -Diag(DiagLoc, diag::warn_ret_local_temp_addr_ref) -

[clang] [Clang] Implement C++26 P2748R5 "Disallow Binding a Returned Glvalue to a Temporary" (PR #89942)

@@ -8340,8 +8340,17 @@ void Sema::checkInitializerLifetime(const InitializedEntity &Entity, << Entity.getType()->isReferenceType() << CLE->getInitializer() << 2 << DiagRange; } else { -Diag(DiagLoc, diag::warn_ret_local_temp_addr_ref) -

[clang] [clang] pointer to member with qualified-id enclosed in parentheses in unevaluated context should be invalid (PR #89713)

t3nsor wrote: > @t3nsor Do you know the reason for the "not enclosed in parameters" in > https://eel.is/c++draft/expr.unary.op#4 ? No I don't. If I had to guess, it might be because adding parentheses is intended to be used as a way to not create a pointer to member (and instead get an ordina