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      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 };
     58