Tareq A. Siraj | 6afcf88 | 2013-04-16 19:37:38 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s -fblocks |
| 2 | |
| 3 | void test_nest_lambda() { |
| 4 | int x; |
| 5 | int y; |
| 6 | [&,y]() { |
| 7 | int z; |
| 8 | #pragma clang __debug captured |
| 9 | { |
| 10 | x = y; // OK |
| 11 | y = z; // expected-error{{cannot assign to a variable captured by copy in a non-mutable lambda}} |
| 12 | z = y; // OK |
| 13 | } |
| 14 | }(); |
| 15 | |
| 16 | int a; |
| 17 | #pragma clang __debug captured |
| 18 | { |
| 19 | int b; |
| 20 | int c; |
| 21 | [&,c]() { |
| 22 | a = b; // OK |
| 23 | b = c; // OK |
| 24 | c = a; // expected-error{{cannot assign to a variable captured by copy in a non-mutable lambda}} |
| 25 | }(); |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | class test_obj_capture { |
| 30 | int a; |
| 31 | void b(); |
| 32 | static void test() { |
| 33 | test_obj_capture c; |
| 34 | #pragma clang __debug captured |
| 35 | { (void)c.a; } // OK |
| 36 | #pragma clang __debug captured |
| 37 | { c.b(); } // OK |
| 38 | } |
| 39 | }; |
| 40 | |
| 41 | class test_this_capture { |
| 42 | int a; |
| 43 | void b(); |
| 44 | void test() { |
| 45 | #pragma clang __debug captured |
| 46 | { (void)this; } // OK |
| 47 | #pragma clang __debug captured |
| 48 | { (void)a; } // OK |
| 49 | #pragma clang __debug captured |
| 50 | { b(); } // OK |
| 51 | } |
| 52 | }; |
Wei Pan | 9fd6b8f | 2013-05-04 03:59:06 +0000 | [diff] [blame^] | 53 | |
| 54 | template <typename T> |
| 55 | void template_capture_var() { |
| 56 | T x; // expected-error{{declaration of reference variable 'x' requires an initializer}} |
| 57 | #pragma clang _debug captured |
| 58 | { |
| 59 | (void)x; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | template <typename T> |
| 64 | class Val { |
| 65 | T v; |
| 66 | public: |
| 67 | void set(const T &v0) { |
| 68 | #pragma clang __debug captured |
| 69 | { |
| 70 | v = v0; |
| 71 | } |
| 72 | } |
| 73 | }; |
| 74 | |
| 75 | void test_capture_var() { |
| 76 | template_capture_var<int>(); // OK |
| 77 | template_capture_var<int&>(); // expected-note{{in instantiation of function template specialization 'template_capture_var<int &>' requested here}} |
| 78 | |
| 79 | Val<float> Obj; |
| 80 | Obj.set(0.0f); // OK |
| 81 | } |
| 82 | |
| 83 | template <typename S, typename T> |
| 84 | S template_capture_var(S x, T y) { |
| 85 | #pragma clang _debug captured |
| 86 | { |
| 87 | x++; |
| 88 | y++; // expected-error{{read-only variable is not assignable}} |
| 89 | } |
| 90 | |
| 91 | return x; |
| 92 | } |
| 93 | |
| 94 | // Check if can recover from a template error. |
| 95 | void test_capture_var_error() { |
| 96 | template_capture_var<int, int>(0, 1); // OK |
| 97 | template_capture_var<int, const int>(0, 1); // expected-note{{in instantiation of function template specialization 'template_capture_var<int, const int>' requested here}} |
| 98 | template_capture_var<int, int>(0, 1); // OK |
| 99 | } |
| 100 | |
| 101 | template <typename T> |
| 102 | void template_capture_in_lambda() { |
| 103 | T x, y; |
| 104 | [=, &y]() { |
| 105 | #pragma clang __debug captured |
| 106 | { |
| 107 | y += x; |
| 108 | } |
| 109 | }(); |
| 110 | } |
| 111 | |
| 112 | void test_lambda() { |
| 113 | template_capture_in_lambda<int>(); // OK |
| 114 | } |
| 115 | |
| 116 | struct Foo { |
| 117 | void foo() { } |
| 118 | static void bar() { } |
| 119 | }; |
| 120 | |
| 121 | template <typename T> |
| 122 | void template_capture_func(T &t) { |
| 123 | #pragma clang __debug captured |
| 124 | { |
| 125 | t.foo(); |
| 126 | } |
| 127 | |
| 128 | #pragma clang __debug captured |
| 129 | { |
| 130 | T::bar(); |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | void test_template_capture_func() { |
| 135 | Foo Obj; |
| 136 | template_capture_func(Obj); |
| 137 | } |
| 138 | |
| 139 | template <typename T> |
| 140 | T captured_sum(const T &a, const T &b) { |
| 141 | T result; |
| 142 | |
| 143 | #pragma clang __debug captured |
| 144 | { |
| 145 | result = a + b; |
| 146 | } |
| 147 | |
| 148 | return result; |
| 149 | } |
| 150 | |
| 151 | template <typename T, typename... Args> |
| 152 | T captured_sum(const T &a, const Args&... args) { |
| 153 | T result; |
| 154 | |
| 155 | #pragma clang __debug captured |
| 156 | { |
| 157 | result = a + captured_sum(args...); |
| 158 | } |
| 159 | |
| 160 | return result; |
| 161 | } |
| 162 | |
| 163 | void test_capture_variadic() { |
| 164 | (void)captured_sum(1, 2, 3); // OK |
| 165 | (void)captured_sum(1, 2, 3, 4, 5); // OK |
| 166 | } |