1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s 2 3 namespace std { 4 typedef decltype(sizeof(int)) size_t; 5 6 template <typename E> 7 struct initializer_list // expected-note 2{{candidate}} 8 { 9 const E *p; 10 size_t n; 11 initializer_list(const E *p, size_t n) : p(p), n(n) {} 12 }; 13 14 struct string { 15 string(const char *); 16 }; 17 18 template<typename A, typename B> 19 struct pair { 20 pair(const A&, const B&); 21 }; 22 } 23 24 namespace bullet1 { 25 double ad[] = { 1, 2.0 }; 26 int ai[] = { 1, 2.0 }; // expected-error {{type 'double' cannot be narrowed to 'int' in initializer list}} expected-note {{override}} 27 28 struct S2 { 29 int m1; 30 double m2, m3; 31 }; 32 33 S2 s21 = { 1, 2, 3.0 }; 34 S2 s22 { 1.0, 2, 3 }; // expected-error {{type 'double' cannot be narrowed to 'int' in initializer list}} expected-note {{override}} 35 S2 s23 { }; 36 } 37 38 namespace bullet4_example1 { 39 struct S { 40 S(std::initializer_list<double> d) {} 41 S(std::initializer_list<int> i) {} 42 S() {} 43 }; 44 45 S s1 = { 1.0, 2.0, 3.0 }; 46 S s2 = { 1, 2, 3 }; 47 S s3 = { }; 48 } 49 50 namespace bullet4_example2 { 51 struct Map { 52 Map(std::initializer_list<std::pair<std::string,int>>) {} 53 }; 54 55 Map ship = {{"Sophie",14}, {"Surprise",28}}; 56 } 57 58 namespace bullet4_example3 { 59 struct S { 60 S(int, double, double) {} 61 S() {} 62 }; 63 64 S s1 = { 1, 2, 3.0 }; 65 S s2 { 1.0, 2, 3 }; // expected-error {{type 'double' cannot be narrowed to 'int' in initializer list}} expected-note {{override}} 66 S s3 {}; 67 } 68 69 namespace bullet5 { 70 int x1 {2}; 71 int x2 {2.0}; // expected-error {{type 'double' cannot be narrowed to 'int' in initializer list}} expected-note {{override}} 72 } 73 74 namespace bullet6 { 75 struct S { 76 S(std::initializer_list<double>) {} 77 S(const std::string &) {} 78 }; 79 80 const S& r1 = { 1, 2, 3.0 }; 81 const S& r2 = { "Spinach" }; 82 S& r3 = { 1, 2, 3 }; // expected-error {{non-const lvalue reference to type 'bullet6::S' cannot bind to an initializer list temporary}} 83 const int& i1 = { 1 }; 84 const int& i2 = { 1.1 }; // expected-error {{type 'double' cannot be narrowed to 'int' in initializer list}} expected-note {{override}} expected-warning {{implicit conversion}} 85 const int (&iar)[2] = { 1, 2 }; 86 } 87 88 namespace bullet7 { 89 int** pp {}; 90 } 91 92 namespace bullet8 { 93 struct A { int i; int j; }; 94 A a1 { 1, 2 }; 95 A a2 { 1.2 }; // expected-error {{type 'double' cannot be narrowed to 'int' in initializer list}} expected-note {{override}} expected-warning {{implicit conversion}} 96 97 struct B { 98 B(std::initializer_list<int> i) {} 99 }; 100 B b1 { 1, 2 }; 101 B b2 { 1, 2.0 }; // expected-error {{type 'double' cannot be narrowed to 'int' in initializer list}} expected-note {{override}} 102 103 struct C { 104 C(int i, double j) {} 105 }; 106 C c1 = { 1, 2.2 }; 107 // FIXME: Suppress the narrowing warning in the cases where we issue a narrowing error. 108 C c2 = { 1.1, 2 }; // expected-error {{type 'double' cannot be narrowed to 'int' in initializer list}} expected-note {{override}} expected-warning {{implicit conversion}} 109 110 int j { 1 }; 111 int k { }; 112 } 113 114 namespace rdar13395022 { 115 struct MoveOnly { 116 MoveOnly(MoveOnly&&); 117 }; 118 119 void test(MoveOnly mo) { 120 // FIXME: These diagnostics are poor. 121 auto &&list1 = {mo}; // expected-error{{no viable conversion}} 122 MoveOnly (&&list2)[1] = {mo}; // expected-error{{no viable conversion}} 123 std::initializer_list<MoveOnly> &&list3 = {}; 124 MoveOnly (&&list4)[1] = {}; // expected-error{{uninitialized}} 125 } 126 } 127
