| 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
| 2 | |
| 3 | namespace N { |
| 4 | struct X { }; |
| 5 | |
| 6 | X operator+(X, X); |
| 7 | |
| 8 | void f(X); // expected-note 2 {{'N::f' declared here}} |
| 9 | void g(X); // expected-note{{candidate function}} |
| 10 | |
| 11 | void test_multiadd(X x) { |
| 12 | (void)(x + x); |
| 13 | } |
| 14 | } |
| 15 | |
| 16 | namespace M { |
| 17 | struct Y : N::X { }; |
| 18 | } |
| 19 | |
| 20 | void f(); |
| 21 | |
| 22 | void test_operator_adl(N::X x, M::Y y) { |
| 23 | (void)(x + x); |
| 24 | (void)(y + y); |
| 25 | } |
| 26 | |
| 27 | void test_func_adl(N::X x, M::Y y) { |
| 28 | f(x); |
| 29 | f(y); |
| 30 | (f)(x); // expected-error{{too many arguments to function call, expected 0, have 1; did you mean 'N::f'?}} |
| 31 | ::f(x); // expected-error{{too many arguments to function call, expected 0, have 1; did you mean 'N::f'?}} |
| 32 | } |
| 33 | |
| 34 | namespace N { |
| 35 | void test_multiadd2(X x) { |
| 36 | (void)(x + x); |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | |
| 41 | void test_func_adl_only(N::X x) { |
| 42 | g(x); |
| 43 | } |
| 44 | |
| 45 | namespace M { |
| 46 | int g(N::X); // expected-note{{candidate function}} |
| 47 | |
| 48 | void test(N::X x) { |
| 49 | g(x); // expected-error{{call to 'g' is ambiguous}} |
| 50 | int i = (g)(x); |
| 51 | |
| 52 | int g(N::X); |
| 53 | g(x); // okay; calls locally-declared function, no ADL |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | |
| 58 | void test_operator_name_adl(N::X x) { |
| 59 | (void)operator+(x, x); |
| 60 | } |
| 61 | |
| 62 | struct Z { }; |
| 63 | int& f(Z); |
| 64 | |
| 65 | namespace O { |
| 66 | char &f(); |
| 67 | void test_global_scope_adl(Z z) { |
| 68 | { |
| 69 | int& ir = f(z); |
| 70 | } |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | extern "C" { |
| 75 | struct L { int x; }; |
| 76 | } |
| 77 | |
| 78 | void h(L); // expected-note{{candidate function}} |
| 79 | |
| 80 | namespace P { |
| 81 | void h(L); // expected-note{{candidate function}} |
| 82 | void test_transparent_context_adl(L l) { |
| 83 | { |
| 84 | h(l); // expected-error {{call to 'h' is ambiguous}} |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | namespace test5 { |
| 90 | namespace NS { |
| 91 | struct A; |
| 92 | void foo(void (*)(A&)); |
| 93 | } |
| 94 | void bar(NS::A& a); |
| 95 | |
| 96 | void test() { |
| 97 | foo(&bar); |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | // PR6762: __builtin_va_list should be invisible to ADL on all platforms. |
| 102 | void test6_function(__builtin_va_list &argv); |
| 103 | namespace test6 { |
| 104 | void test6_function(__builtin_va_list &argv); |
| 105 | |
| 106 | void test() { |
| 107 | __builtin_va_list args; |
| 108 | test6_function(args); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | // PR13682: we might need to instantiate class temploids. |
| 113 | namespace test7 { |
| 114 | namespace inner { |
| 115 | class A {}; |
| 116 | void test7_function(A &); |
| 117 | } |
| 118 | template <class T> class B : public inner::A {}; |
| 119 | |
| 120 | void test(B<int> &ref) { |
| 121 | test7_function(ref); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | // Like test7, but ensure we don't complain if the type is properly |
| 126 | // incomplete. |
| 127 | namespace test8 { |
| 128 | template <class T> class B; |
| 129 | void test8_function(B<int> &); |
| 130 | |
| 131 | void test(B<int> &ref) { |
| 132 | test8_function(ref); |
| 133 | } |
| 134 | } |
| 135 | |