clang/test/CXX/special/class.inhctor/p1.cpp

   1 // RUN: %clang_cc1 -std=c++11 -verify %s
   2 //
   3 // Note: [class.inhctor] was removed by P0136R1. This tests the new behavior
   4 // for the wording that used to be there.
   5
   6 struct A {
   7   A(...); // expected-note {{candidate constructor}}
   8   A(int = 0, int = 0, int = 0, int = 0, ...); // expected-note 3{{candidate constructor}} expected-note 2{{candidate inherited constructor}}
   9   A(int = 0, int = 0, ...); // expected-note 3{{candidate constructor}} expected-note 2{{candidate inherited constructor}}
  10
  11   template<typename T> A(T, int = 0, ...);
  12
  13   template<typename T, int N> A(const T (&)[N]); // expected-note {{candidate constructor}} expected-note {{candidate inherited constructor}}
  14   template<typename T, int N> A(const T (&)[N], int = 0); // expected-note {{candidate constructor}} expected-note {{candidate inherited constructor}}
  15 };
  16
  17 struct B : A { // expected-note {{because base class 'A' has multiple default constructors}}
  18   using A::A; // expected-note 6{{inherited here}}
  19   B(void*);
  20 };
  21
  22 struct C {} c;
  23
  24 A a0{}; // expected-error {{ambiguous}}
  25 B b0{}; // expected-error {{deleted}}
  26
  27 A a1{1}; // expected-error {{ambiguous}}
  28 B b1{1}; // expected-error {{ambiguous}}
  29
  30 A a2{1,2}; // expected-error {{ambiguous}}
  31 B b2{1,2}; // expected-error {{ambiguous}}
  32
  33 A a3{1,2,3}; // ok
  34 B b3{1,2,3}; // ok
  35
  36 A a4{1,2,3,4}; // ok
  37 B b4{1,2,3,4}; // ok
  38
  39 A a5{1,2,3,4,5}; // ok
  40 B b5{1,2,3,4,5}; // ok
  41
  42 A a6{c}; // ok
  43 B b6{c}; // ok
  44
  45 A a7{c,0}; // ok
  46 B b7{c,0}; // ok
  47
  48 A a8{c,0,1}; // ok
  49 B b8{c,0,1}; // ok
  50
  51 A a9{"foo"}; // expected-error {{ambiguous}}
  52 B b9{"foo"}; // expected-error {{ambiguous}}
  53
  54 namespace PR15755 {
  55   struct X {
  56     template<typename...Ts> X(int, Ts...);
  57   };
  58   struct Y : X {
  59     using X::X;
  60   };
  61   struct Z : Y {
  62     using Y::Y;
  63   };
  64   Z z(0);
  65 }