xref: /external/clang/test/CXX/special/class.inhctor/p1.cpp

// RUN: %clang_cc1 -std=c++11 -verify %s
// Per a core issue (no number yet), an ellipsis is always dropped.
struct A {
  A(...); // expected-note {{here}}
  A(int = 0, int = 0, int = 0, int = 0, ...); // expected-note 9{{here}} expected-note 2{{constructor cannot be inherited}}
  A(int = 0, int = 0, ...); // expected-note {{here}}

  template<typename T> A(T, int = 0, ...); // expected-note 5{{here}}

  template<typename T, int N> A(const T (&)[N]); // expected-note 2{{here}} expected-note {{constructor cannot be inherited}}
  template<typename T, int N> A(const T (&)[N], int = 0); // expected-note 2{{here}}
};

struct B : A { // expected-note 6{{candidate}}
  using A::A; // expected-warning 4{{inheriting constructor does not inherit ellipsis}} expected-note 16{{candidate}} expected-note 3{{deleted constructor was inherited here}}
};

struct C {} c;

B b0{};
// expected-error@-1 {{call to implicitly-deleted default constructor of 'B'}}
// expected-note@-8 {{default constructor of 'B' is implicitly deleted because base class 'A' has multiple default constructors}}

B b1{1};
// expected-error@-1 {{call to deleted constructor of 'B'}}

B b2{1,2};
// expected-error@-1 {{call to deleted constructor of 'B'}}

B b3{1,2,3};
// ok

B b4{1,2,3,4};
// ok

B b5{1,2,3,4,5};
// expected-error@-1 {{no matching constructor for initialization of 'B'}}

B b6{c};
// ok

B b7{c,0};
// ok

B b8{c,0,1};
// expected-error@-1 {{no matching constructor}}

B b9{"foo"};
// FIXME: explain why the inheriting constructor was deleted
// expected-error@-2 {{call to deleted constructor of 'B'}}

namespace PR15755 {
  struct X {
    template<typename...Ts> X(int, Ts...);
  };
  struct Y : X {
    using X::X;
  };
  struct Z : Y {
    using Y::Y;
  };
  Z z(0);
}