Rafael Espindola | f003acd | 2013-10-04 14:28:51 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks %s |
Faisal Vali | d6992ab | 2013-09-29 08:45:24 +0000 | [diff] [blame] | 2 | // DONTRUNYET: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -fdelayed-template-parsing %s -DDELAYED_TEMPLATE_PARSING |
| 3 | // DONTRUNYET: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -fms-extensions %s -DMS_EXTENSIONS |
| 4 | // DONTRUNYET: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -fdelayed-template-parsing -fms-extensions %s -DMS_EXTENSIONS -DDELAYED_TEMPLATE_PARSING |
| 5 | |
| 6 | namespace explicit_call { |
| 7 | int test() { |
| 8 | auto L = [](auto a) { return a; }; |
| 9 | L.operator()(3); |
| 10 | L.operator()<char>(3.14); //expected-warning{{implicit conversion}} |
| 11 | return 0; |
| 12 | } |
| 13 | } //end ns |
| 14 | |
| 15 | namespace test_conversion_to_fptr { |
| 16 | |
| 17 | void f1(int (*)(int)) { } |
| 18 | void f2(char (*)(int)) { } // expected-note{{candidate}} |
| 19 | void g(int (*)(int)) { } // #1 expected-note{{candidate}} |
| 20 | void g(char (*)(char)) { } // #2 expected-note{{candidate}} |
| 21 | void h(int (*)(int)) { } // #3 |
| 22 | void h(char (*)(int)) { } // #4 |
| 23 | |
| 24 | int test() { |
| 25 | { |
| 26 | auto glambda = [](auto a) { return a; }; |
| 27 | glambda(1); |
| 28 | f1(glambda); // OK |
| 29 | f2(glambda); // expected-error{{no matching function}} |
| 30 | g(glambda); // expected-error{{call to 'g' is ambiguous}} |
| 31 | h(glambda); // OK: calls #3 since it is convertible from ID |
| 32 | |
| 33 | int& (*fpi)(int*) = [](auto* a) -> auto& { return *a; }; // OK |
| 34 | |
| 35 | } |
| 36 | { |
| 37 | |
| 38 | auto L = [](auto a) { return a; }; |
| 39 | int (*fp)(int) = L; |
| 40 | fp(5); |
| 41 | L(3); |
| 42 | char (*fc)(char) = L; |
| 43 | fc('b'); |
| 44 | L('c'); |
| 45 | double (*fd)(double) = L; |
| 46 | fd(3.14); |
| 47 | fd(6.26); |
| 48 | L(4.25); |
| 49 | } |
| 50 | { |
| 51 | auto L = [](auto a) ->int { return a; }; //expected-note 2{{candidate template ignored}} |
| 52 | int (*fp)(int) = L; |
| 53 | char (*fc)(char) = L; //expected-error{{no viable conversion}} |
| 54 | double (*fd)(double) = L; //expected-error{{no viable conversion}} |
| 55 | } |
| 56 | |
| 57 | } |
| 58 | |
| 59 | namespace more_converion_to_ptr_to_function_tests { |
| 60 | |
| 61 | |
| 62 | int test() { |
| 63 | { |
| 64 | int& (*fpi)(int*) = [](auto* a) -> auto& { return *a; }; // OK |
| 65 | int (*fp2)(int) = [](auto b) -> int { return b; }; |
| 66 | int (*fp3)(char) = [](auto c) -> int { return c; }; |
| 67 | char (*fp4)(int) = [](auto d) { return d; }; //expected-error{{no viable conversion}}\ |
| 68 | //expected-note{{candidate template ignored}} |
| 69 | char (*fp5)(char) = [](auto e) -> int { return e; }; //expected-error{{no viable conversion}}\ |
| 70 | //expected-note{{candidate template ignored}} |
| 71 | |
| 72 | fp2(3); |
| 73 | fp3('\n'); |
| 74 | fp3('a'); |
| 75 | return 0; |
| 76 | } |
| 77 | } // end test() |
| 78 | |
| 79 | template<class ... Ts> void vfun(Ts ... ) { } |
| 80 | |
| 81 | int variadic_test() { |
| 82 | |
| 83 | int (*fp)(int, char, double) = [](auto ... a) -> int { vfun(a...); return 4; }; |
| 84 | fp(3, '4', 3.14); |
| 85 | |
| 86 | int (*fp2)(int, char, double) = [](auto ... a) { vfun(a...); return 4; }; |
| 87 | fp(3, '4', 3.14); |
| 88 | return 2; |
| 89 | } |
| 90 | |
| 91 | } // end ns |
| 92 | |
| 93 | namespace conversion_operator { |
| 94 | void test() { |
| 95 | auto L = [](auto a) -> int { return a; }; |
| 96 | int (*fp)(int) = L; |
| 97 | int (&fp2)(int) = [](auto a) { return a; }; // expected-error{{non-const lvalue}} |
| 98 | int (&&fp3)(int) = [](auto a) { return a; }; // expected-error{{no viable conversion}}\ |
| 99 | //expected-note{{candidate}} |
| 100 | } |
| 101 | } |
Rafael Espindola | f003acd | 2013-10-04 14:28:51 +0000 | [diff] [blame] | 102 | |
Faisal Vali | d6992ab | 2013-09-29 08:45:24 +0000 | [diff] [blame] | 103 | } |
| 104 | |
Rafael Espindola | f003acd | 2013-10-04 14:28:51 +0000 | [diff] [blame] | 105 | |
Faisal Vali | d6992ab | 2013-09-29 08:45:24 +0000 | [diff] [blame] | 106 | namespace return_type_deduction_ok { |
| 107 | auto l = [](auto a) ->auto { return a; }(2); |
| 108 | auto l2 = [](auto a) ->decltype(auto) { return a; }(2); |
| 109 | auto l3 = [](auto a) { return a; }(2); |
| 110 | |
| 111 | } |
| 112 | |
| 113 | namespace generic_lambda_as_default_argument_ok { |
| 114 | void test(int i = [](auto a)->int { return a; }(3)) { |
| 115 | } |
| 116 | } |