| 1 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks %s -Wno-error=non-pod-varargs |
| 2 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++98 %s -Wno-error=non-pod-varargs |
| 3 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++11 %s -Wno-error=non-pod-varargs |
| 4 | |
| 5 | // Check that the warning is still there under -fms-compatibility. |
| 6 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks %s -Wno-error=non-pod-varargs -fms-compatibility |
| 7 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++98 %s -Wno-error=non-pod-varargs -fms-compatibility |
| 8 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++11 %s -Wno-error=non-pod-varargs -fms-compatibility |
| 9 | |
| 10 | extern char version[]; |
| 11 | |
| 12 | class C { |
| 13 | public: |
| 14 | C(int); |
| 15 | void g(int a, ...); |
| 16 | static void h(int a, ...); |
| 17 | }; |
| 18 | |
| 19 | void g(int a, ...); |
| 20 | |
| 21 | void t1() |
| 22 | { |
| 23 | C c(10); |
| 24 | |
| 25 | g(10, c); |
| 26 | #if __cplusplus <= 199711L |
| 27 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
| 28 | #endif |
| 29 | |
| 30 | g(10, version); |
| 31 | |
| 32 | void (*ptr)(int, ...) = g; |
| 33 | ptr(10, c); |
| 34 | #if __cplusplus <= 199711L |
| 35 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
| 36 | #endif |
| 37 | |
| 38 | ptr(10, version); |
| 39 | } |
| 40 | |
| 41 | void t2() |
| 42 | { |
| 43 | C c(10); |
| 44 | |
| 45 | c.g(10, c); |
| 46 | #if __cplusplus <= 199711L |
| 47 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
| 48 | #endif |
| 49 | |
| 50 | c.g(10, version); |
| 51 | |
| 52 | void (C::*ptr)(int, ...) = &C::g; |
| 53 | (c.*ptr)(10, c); |
| 54 | #if __cplusplus <= 199711L |
| 55 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
| 56 | #endif |
| 57 | |
| 58 | (c.*ptr)(10, version); |
| 59 | |
| 60 | C::h(10, c); |
| 61 | #if __cplusplus <= 199711L |
| 62 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
| 63 | #endif |
| 64 | |
| 65 | C::h(10, version); |
| 66 | |
| 67 | void (*static_ptr)(int, ...) = &C::h; |
| 68 | static_ptr(10, c); |
| 69 | #if __cplusplus <= 199711L |
| 70 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
| 71 | #endif |
| 72 | |
| 73 | static_ptr(10, version); |
| 74 | } |
| 75 | |
| 76 | int (^block)(int, ...); |
| 77 | |
| 78 | void t3() |
| 79 | { |
| 80 | C c(10); |
| 81 | |
| 82 | block(10, c); |
| 83 | #if __cplusplus <= 199711L |
| 84 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic block; call will abort at runtime}} |
| 85 | #endif |
| 86 | |
| 87 | block(10, version); |
| 88 | } |
| 89 | |
| 90 | class D { |
| 91 | public: |
| 92 | void operator() (int a, ...); |
| 93 | }; |
| 94 | |
| 95 | void t4() |
| 96 | { |
| 97 | C c(10); |
| 98 | |
| 99 | D d; |
| 100 | |
| 101 | d(10, c); |
| 102 | #if __cplusplus <= 199711L |
| 103 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
| 104 | #endif |
| 105 | |
| 106 | d(10, version); |
| 107 | } |
| 108 | |
| 109 | class E { |
| 110 | E(int, ...); // expected-note 2{{implicitly declared private here}} |
| 111 | }; |
| 112 | |
| 113 | void t5() |
| 114 | { |
| 115 | C c(10); |
| 116 | |
| 117 | E e(10, c); |
| 118 | #if __cplusplus <= 199711L |
| 119 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic constructor; call will abort at runtime}} |
| 120 | #endif |
| 121 | // expected-error@-4 {{calling a private constructor of class 'E'}} |
| 122 | (void)E(10, c); |
| 123 | #if __cplusplus <= 199711L |
| 124 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic constructor; call will abort at runtime}} |
| 125 | #endif |
| 126 | // expected-error@-4 {{calling a private constructor of class 'E'}} |
| 127 | |
| 128 | } |
| 129 | |
| 130 | // PR5761: unevaluated operands and the non-POD warning |
| 131 | class Foo { |
| 132 | public: |
| 133 | Foo() {} |
| 134 | }; |
| 135 | |
| 136 | int Helper(...); |
| 137 | const int size = sizeof(Helper(Foo())); |
| 138 | |
| 139 | namespace std { |
| 140 | class type_info { }; |
| 141 | } |
| 142 | |
| 143 | struct Base { virtual ~Base(); }; |
| 144 | Base &get_base(...); |
| 145 | int eat_base(...); |
| 146 | |
| 147 | void test_typeid(Base &base) { |
| 148 | (void)typeid(get_base(base)); |
| 149 | #if __cplusplus <= 199711L |
| 150 | // expected-warning@-2 {{cannot pass object of non-POD type 'Base' through variadic function; call will abort at runtime}} |
| 151 | #else |
| 152 | // expected-warning@-4 {{cannot pass object of non-trivial type 'Base' through variadic function; call will abort at runtime}} |
| 153 | #endif |
| 154 | // expected-warning@-6 {{expression with side effects will be evaluated despite being used as an operand to 'typeid'}} |
| 155 | (void)typeid(eat_base(base)); // okay |
| 156 | } |
| 157 | |
| 158 | |
| 159 | // rdar://7985267 - Shouldn't warn, doesn't actually use __builtin_va_start is |
| 160 | // magic. |
| 161 | |
| 162 | void t6(Foo somearg, ... ) { |
| 163 | __builtin_va_list list; |
| 164 | __builtin_va_start(list, somearg); |
| 165 | } |
| 166 | |
| 167 | void t7(int n, ...) { |
| 168 | __builtin_va_list list; |
| 169 | __builtin_va_start(list, n); |
| 170 | (void)__builtin_va_arg(list, C); // expected-warning{{second argument to 'va_arg' is of non-POD type 'C'}} |
| 171 | __builtin_va_end(list); |
| 172 | } |
| 173 | |
| 174 | struct Abstract { |
| 175 | virtual void doit() = 0; // expected-note{{unimplemented pure virtual method}} |
| 176 | }; |
| 177 | |
| 178 | void t8(int n, ...) { |
| 179 | __builtin_va_list list; |
| 180 | __builtin_va_start(list, n); |
| 181 | (void)__builtin_va_arg(list, Abstract); // expected-error{{second argument to 'va_arg' is of abstract type 'Abstract'}} |
| 182 | __builtin_va_end(list); |
| 183 | } |
| 184 | |
| 185 | int t9(int n) { |
| 186 | // Make sure the error works in potentially-evaluated sizeof |
| 187 | return (int)sizeof(*(Helper(Foo()), (int (*)[n])0)); |
| 188 | #if __cplusplus <= 199711L |
| 189 | // expected-warning@-2 {{cannot pass object of non-POD type 'Foo' through variadic function; call will abort at runtime}} |
| 190 | #endif |
| 191 | } |
| 192 | |
| 193 | // PR14057 |
| 194 | namespace t10 { |
| 195 | struct F { |
| 196 | F(); |
| 197 | }; |
| 198 | |
| 199 | struct S { |
| 200 | void operator()(F, ...); |
| 201 | }; |
| 202 | |
| 203 | void foo() { |
| 204 | S s; |
| 205 | F f; |
| 206 | s.operator()(f); |
| 207 | s(f); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | namespace t11 { |
| 212 | typedef void(*function_ptr)(int, ...); |
| 213 | typedef void(C::*member_ptr)(int, ...); |
| 214 | typedef void(^block_ptr)(int, ...); |
| 215 | |
| 216 | function_ptr get_f_ptr(); |
| 217 | member_ptr get_m_ptr(); |
| 218 | block_ptr get_b_ptr(); |
| 219 | |
| 220 | function_ptr arr_f_ptr[5]; |
| 221 | member_ptr arr_m_ptr[5]; |
| 222 | block_ptr arr_b_ptr[5]; |
| 223 | |
| 224 | void test() { |
| 225 | C c(10); |
| 226 | |
| 227 | (get_f_ptr())(10, c); |
| 228 | #if __cplusplus <= 199711L |
| 229 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
| 230 | #endif |
| 231 | (get_f_ptr())(10, version); |
| 232 | |
| 233 | (c.*get_m_ptr())(10, c); |
| 234 | #if __cplusplus <= 199711L |
| 235 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
| 236 | #endif |
| 237 | (c.*get_m_ptr())(10, version); |
| 238 | |
| 239 | (get_b_ptr())(10, c); |
| 240 | #if __cplusplus <= 199711L |
| 241 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic block; call will abort at runtime}} |
| 242 | #endif |
| 243 | |
| 244 | (get_b_ptr())(10, version); |
| 245 | |
| 246 | (arr_f_ptr[3])(10, c); |
| 247 | #if __cplusplus <= 199711L |
| 248 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
| 249 | #endif |
| 250 | |
| 251 | (arr_f_ptr[3])(10, version); |
| 252 | |
| 253 | (c.*arr_m_ptr[3])(10, c); |
| 254 | #if __cplusplus <= 199711L |
| 255 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
| 256 | #endif |
| 257 | |
| 258 | (c.*arr_m_ptr[3])(10, version); |
| 259 | |
| 260 | (arr_b_ptr[3])(10, c); |
| 261 | #if __cplusplus <= 199711L |
| 262 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic block; call will abort at runtime}} |
| 263 | #endif |
| 264 | (arr_b_ptr[3])(10, version); |
| 265 | } |
| 266 | } |
| 267 | |