clang/test/SemaCXX/overload-call-copycon.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s -Wnon-pod-varargs
   2 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s -Wnon-pod-varargs
   3 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s -Wnon-pod-varargs
   4
   5 class X { }; // expected-note {{the implicit copy constructor}}
   6 // expected-note@-1 {{the implicit default constructor}}
   7 #if __cplusplus >= 201103L // C++11 or later
   8 // expected-note@-3 {{candidate constructor (the implicit move constructor) not viable}}
   9 #endif
  10
  11 int& copycon(X x); // expected-note{{passing argument to parameter}}
  12 float& copycon(...);
  13
  14 void test_copycon(X x, X const xc, X volatile xv) {
  15   int& i1 = copycon(x);
  16   int& i2 = copycon(xc);
  17   copycon(xv); // expected-error{{no matching constructor}}
  18 }
  19
  20 class A {
  21 public:
  22   A(A&); // expected-note{{would lose const qualifier}} \
  23          // expected-note{{no known conversion}}
  24 };
  25
  26 class B : public A { }; // expected-note{{would lose const qualifier}} \
  27 // expected-note{{would lose volatile qualifier}} \
  28 // expected-note 2{{requires 0 arguments}}
  29
  30 short& copycon2(A a); // expected-note{{passing argument to parameter}}
  31 int& copycon2(B b); // expected-note 2{{passing argument to parameter}}
  32 float& copycon2(...);
  33
  34 void test_copycon2(A a, const A ac, B b, B const bc, B volatile bv) {
  35   int& i1 = copycon2(b);
  36   copycon2(bc); // expected-error{{no matching constructor}}
  37   copycon2(bv); // expected-error{{no matching constructor}}
  38   short& s1 = copycon2(a);
  39   copycon2(ac); // expected-error{{no matching constructor}}
  40 }
  41
  42 int& copycon3(A a); // expected-note{{passing argument to parameter 'a' here}}
  43 float& copycon3(...);
  44
  45 void test_copycon3(B b, const B bc) {
  46   int& i1 = copycon3(b);
  47   copycon3(bc); // expected-error{{no matching constructor}}
  48 }
  49
  50 class C : public B { };
  51
  52 float& copycon4(A a);
  53 int& copycon4(B b);
  54
  55 void test_copycon4(C c) {
  56   int& i = copycon4(c);
  57 };