clang/test/SemaCXX/decl-init-ref.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s -Wno-uninitialized
   2
   3 struct A {};
   4
   5 struct BASE {
   6   operator A(); // expected-note {{candidate function}}
   7 };
   8
   9 struct BASE1 {
  10  operator A();  // expected-note {{candidate function}}
  11 };
  12
  13 class B : public BASE , public BASE1
  14 {
  15   public:
  16   B();
  17 } b;
  18
  19 extern B f();
  20
  21 const int& ri = (void)0; // expected-error {{reference to type 'const int' could not bind to an rvalue of type 'void'}}
  22
  23 int main() {
  24         const A& rca = f(); // expected-error {{reference initialization of type 'const A &' with initializer of type 'B' is ambiguous}}
  25         A& ra = f(); // expected-error {{non-const lvalue reference to type 'A' cannot bind to a temporary of type 'B'}}
  26 }
  27
  28 struct PR6139 { A (&x)[1]; };
  29 PR6139 x = {{A()}}; // expected-error{{non-const lvalue reference to type 'A[1]' cannot bind to an initializer list temporary}}
  30
  31 struct PR6139b { A (&x)[1]; };
  32 PR6139b y = {A()}; // expected-error{{non-const lvalue reference to type 'A[1]' cannot bind to a temporary of type 'A'}}
  33
  34 namespace PR16502 {
  35   struct A { int &&temporary; int x, y; };
  36   int f();
  37   const A &c = { 10, ++c.temporary };
  38 }
  39
  40 namespace IncompleteTest {
  41   struct String;
  42   // expected-error@+1 {{reference to incomplete type 'const String' could not bind to an lvalue of type 'const char[1]'}}
  43   void takeString(const String& = "") {} // expected-note {{passing argument to parameter here}}
  44   void test() {
  45         takeString();
  46   }
  47 }