Sebastian Redl | 13dc8f9 | 2011-11-27 16:50:07 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s |
| 2 | |
Sebastian Redl | 1cdb70b | 2011-12-03 14:54:30 +0000 | [diff] [blame] | 3 | struct one { char c; }; |
| 4 | struct two { char c[2]; }; |
| 5 | |
Sebastian Redl | 13dc8f9 | 2011-11-27 16:50:07 +0000 | [diff] [blame] | 6 | namespace 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 | |
Sebastian Redl | 1cdb70b | 2011-12-03 14:54:30 +0000 | [diff] [blame] | 34 | struct B { |
| 35 | int i1; |
| 36 | }; |
| 37 | |
| 38 | void call() { |
Richard Smith | a41c97a | 2013-09-20 01:15:31 +0000 | [diff] [blame] | 39 | one f(const int&); |
Sebastian Redl | 1cdb70b | 2011-12-03 14:54:30 +0000 | [diff] [blame] | 40 | f({1}); |
| 41 | |
Richard Smith | a41c97a | 2013-09-20 01:15:31 +0000 | [diff] [blame] | 42 | one g(int&); // expected-note {{passing argument}} |
Sebastian Redl | 1cdb70b | 2011-12-03 14:54:30 +0000 | [diff] [blame] | 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 | |
Sebastian Redl | 3a45c0e | 2012-02-12 16:37:36 +0000 | [diff] [blame] | 74 | void edge_cases() { |
| 75 | // FIXME: very poor error message |
| 76 | int const &b({0}); // expected-error {{could not bind}} |
| 77 | } |
| 78 | |
Sebastian Redl | 13dc8f9 | 2011-11-27 16:50:07 +0000 | [diff] [blame] | 79 | } |
Sebastian Redl | cbf8209 | 2012-03-07 16:10:45 +0000 | [diff] [blame] | 80 | |
| 81 | namespace PR12182 { |
| 82 | void f(int const(&)[3]); |
| 83 | |
| 84 | void g() { |
| 85 | f({1, 2}); |
| 86 | } |
| 87 | } |
Richard Smith | 6e4a0af | 2012-04-26 03:16:45 +0000 | [diff] [blame] | 88 | |
| 89 | namespace PR12660 { |
| 90 | const int &i { 1 }; |
| 91 | struct S { S(int); } const &s { 2 }; |
| 92 | } |
Richard Smith | 02d65ee | 2013-01-15 07:58:29 +0000 | [diff] [blame] | 93 | |
| 94 | namespace b7891773 { |
| 95 | typedef void (*ptr)(); |
| 96 | template <class T> void f(); |
| 97 | int g(const ptr &); |
| 98 | int k = g({ f<int> }); |
| 99 | } |
Richard Smith | 6242a45 | 2013-05-31 02:56:17 +0000 | [diff] [blame] | 100 | |
| 101 | namespace 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 | } |