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// { dg-do compile } // Origin: Giovanni Bajo <giovannibajo at gcc dot gnu dot org> // DR147: Naming the constructor (PR 11764)
namespace N1 {
struct A { A(); void f(); }; struct B: public A { B(); };
A::A() { } B::B() { }
B::A ba; A::A a; // { dg-error "constructor" "the injected-class-name can never be found through qualified lookup" }
void A::f() { A::A(); // { dg-message "::A" "c++/42415" } }
void f() { A::A a; // { dg-error "constructor" "constructor" } } // { dg-error "" "error cascade" { target *-*-* } .-1 } error cascade }
namespace N2 {
// This is nasty: if we allowed the injected-class-name to be looked as a // qualified type, then the following code would be well-formed. Basically // the last line is defining the static member (with redundant parenthesis). // Instead, it should be rejected as a malformed constructor declaration.
template <class T> struct A { template <class T2> A(T2); static A x; }; template<> template <> A<char>::A<char>(char); template<> A<int>::A<int>(A<int>::x); // { dg-error "" "this is an invalid declaration of the constructor" }
}
// But DR 318 says that in situations where a type is syntactically // required, lookup finds it.
struct C { C(); typedef int T; }; struct C::C c; C::C::T t; struct D: C::C { D(): C::C() { } };
// And if lookup doesn't find the injected-class-name, we aren't naming the // constructor (c++/44401).
struct E { int E; };
int E::*p = &E::E;
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