1// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
2
3struct one { char c; };
4struct two { char c[2]; };
5
6namespace reference {
7  struct A {
8    int i1, i2;
9  };
10
11  void single_init() {
12    const int &cri1a = {1};
13    const int &cri1b{1};
14
15    int i = 1;
16    int &ri1a = {i};
17    int &ri1b{i};
18
19    int &ri2 = {1}; // expected-error {{cannot bind to an initializer list temporary}}
20
21    A a{1, 2};
22    A &ra1a = {a};
23    A &ra1b{a};
24  }
25
26  void reference_to_aggregate() {
27    const A &ra1{1, 2};
28    A &ra2{1, 2}; // expected-error {{cannot bind to an initializer list temporary}}
29
30    const int (&arrayRef)[] = {1, 2, 3};
31    static_assert(sizeof(arrayRef) == 3 * sizeof(int), "bad array size");
32  }
33
34  struct B {
35    int i1;
36  };
37
38  void call() {
39    one f(const int&);
40    f({1});
41
42    one g(int&); // expected-note {{passing argument}}
43    g({1}); // expected-error {{cannot bind to an initializer list temporary}}
44    int i = 0;
45    g({i});
46
47    void h(const B&);
48    h({1});
49
50    void a(B&); // expected-note {{passing argument}}
51    a({1}); // expected-error {{cannot bind to an initializer list temporary}}
52    B b{1};
53    a({b});
54  }
55
56  void overloading() {
57    one f(const int&);
58    two f(const B&);
59
60    // First is identity conversion, second is user-defined conversion.
61    static_assert(sizeof(f({1})) == sizeof(one), "bad overload resolution");
62
63    one g(int&);
64    two g(const B&);
65
66    static_assert(sizeof(g({1})) == sizeof(two), "bad overload resolution");
67
68    one h(const int&);
69    two h(const A&);
70
71    static_assert(sizeof(h({1, 2})) == sizeof(two), "bad overload resolution");
72  }
73
74  void edge_cases() {
75    // FIXME: very poor error message
76    int const &b({0}); // expected-error {{could not bind}}
77  }
78
79}
80
81namespace PR12182 {
82  void f(int const(&)[3]);
83
84  void g() {
85      f({1, 2});
86  }
87}
88
89namespace PR12660 {
90  const int &i { 1 };
91  struct S { S(int); } const &s { 2 };
92}
93
94namespace b7891773 {
95  typedef void (*ptr)();
96  template <class T> void f();
97  int g(const ptr &);
98  int k = g({ f<int> });
99}
100
101namespace inner_init {
102  struct A { int n; };
103  struct B { A &&r; };
104  B b1 { 0 }; // expected-error {{reference to type 'inner_init::A' could not bind to an rvalue of type 'int'}}
105  B b2 { { 0 } };
106  B b3 { { { 0 } } }; // expected-warning {{braces around scalar init}}
107
108  struct C { C(int); };
109  struct D { C &&r; };
110  D d1 { 0 }; // ok, 0 implicitly converts to C
111  D d2 { { 0 } }; // ok, { 0 } calls C(0)
112  D d3 { { { 0 } } }; // ok, { { 0 } } calls C({ 0 })
113  D d4 { { { { 0 } } } }; // expected-warning {{braces around scalar init}}
114
115  struct E { explicit E(int); }; // expected-note 2{{here}}
116  struct F { E &&r; };
117  F f1 { 0 }; // expected-error {{could not bind to an rvalue of type 'int'}}
118  F f2 { { 0 } }; // expected-error {{chosen constructor is explicit}}
119  F f3 { { { 0 } } }; // expected-error {{chosen constructor is explicit}}
120}
121