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1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 
3 namespace PR5909 {
4   struct Foo {
5     int x : 20;
6   };
7 
8   bool Test(const int& foo);
9 
10   const Foo f = { 0 };  // It compiles without the 'const'.
11   bool z = Test(f.x);
12 }
13 
14 namespace PR6264 {
15   typedef int (&T)[3];
16   struct S
17   {
18     operator T ();
19   };
f()20   void f()
21   {
22     T bar = S();
23   }
24 }
25 
26 namespace PR6066 {
27   struct B { };
28   struct A : B {
29     operator B*();
30     operator B&(); // expected-warning{{conversion function converting 'PR6066::A' to its base class 'PR6066::B' will never be used}}
31   };
32 
33   void f(B&); // no rvalues accepted
34   void f(B*);
35 
g()36   int g() {
37     f(A()); // calls f(B*)
38     return 0;
39   }
40 }
41 
42 namespace test3 {
43   struct A {
44     unsigned bitX : 4; // expected-note 4 {{bit-field is declared here}}
45     unsigned bitY : 4; // expected-note {{bit-field is declared here}}
46     unsigned var;
47 
48     void foo();
49   };
50 
test(A * a)51   void test(A *a) {
52     unsigned &t0 = a->bitX; // expected-error {{non-const reference cannot bind to bit-field 'bitX'}}
53     unsigned &t1 = (unsigned&) a->bitX; // expected-error {{non-const reference cannot bind to bit-field 'bitX'}}
54     unsigned &t2 = const_cast<unsigned&>(a->bitX); // expected-error {{const_cast from bit-field lvalue to reference type 'unsigned int &'}}
55     unsigned &t3 = (a->foo(), a->bitX); // expected-error {{non-const reference cannot bind to bit-field 'bitX'}}
56     unsigned &t4 = (a->var ? a->bitX : a->bitY); // expected-error {{non-const reference cannot bind to bit-field}}
57     unsigned &t5 = (a->var ? a->bitX : a->bitX); // expected-error {{non-const reference cannot bind to bit-field}}
58     unsigned &t6 = (a->var ? a->bitX : a->var); // expected-error {{non-const reference cannot bind to bit-field}}
59     unsigned &t7 = (a->var ? a->var : a->bitY); // expected-error {{non-const reference cannot bind to bit-field}}
60     unsigned &t8 = (a->bitX = 3); // expected-error {{non-const reference cannot bind to bit-field 'bitX'}}
61     unsigned &t9 = (a->bitY += 3); // expected-error {{non-const reference cannot bind to bit-field 'bitY'}}
62   }
63 }
64