Faisal Vali | c00e419 | 2013-11-07 05:17:06 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -emit-llvm-only %s |
| 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 | constexpr int ODRUSE_SZ = sizeof(char); |
| 7 | |
| 8 | template<class T, int N> |
| 9 | void f(T, const int (&)[N]) { } |
| 10 | |
| 11 | template<class T> |
| 12 | void f(const T&, const int (&)[ODRUSE_SZ]) { } |
| 13 | |
| 14 | #define DEFINE_SELECTOR(x) \ |
| 15 | int selector_ ## x[sizeof(x) == ODRUSE_SZ ? ODRUSE_SZ : ODRUSE_SZ + 5] |
| 16 | |
| 17 | #define F_CALL(x, a) f(x, selector_ ## a) |
| 18 | |
| 19 | // This is a risky assumption, because if an empty class gets captured by value |
| 20 | // the lambda's size will still be '1' |
| 21 | #define ASSERT_NO_CAPTURES(L) static_assert(sizeof(L) == 1, "size of closure with no captures must be 1") |
| 22 | #define ASSERT_CLOSURE_SIZE_EXACT(L, N) static_assert(sizeof(L) == (N), "size of closure must be " #N) |
| 23 | #define ASSERT_CLOSURE_SIZE(L, N) static_assert(sizeof(L) >= (N), "size of closure must be >=" #N) |
| 24 | |
| 25 | |
| 26 | namespace sample { |
| 27 | struct X { |
| 28 | int i; |
| 29 | X(int i) : i(i) { } |
| 30 | }; |
| 31 | } |
| 32 | |
| 33 | namespace test_transformations_in_templates { |
| 34 | template<class T> void foo(T t) { |
| 35 | auto L = [](auto a) { return a; }; |
| 36 | } |
| 37 | template<class T> void foo2(T t) { |
| 38 | auto L = [](auto a) -> void { |
| 39 | auto M = [](char b) -> void { |
| 40 | auto N = [](auto c) -> void { |
| 41 | int selector[sizeof(c) == 1 ? |
| 42 | (sizeof(b) == 1 ? 1 : 2) |
| 43 | : 2 |
| 44 | ]{}; |
| 45 | }; |
| 46 | N('a'); |
| 47 | }; |
| 48 | }; |
| 49 | L(3.14); |
| 50 | } |
| 51 | |
| 52 | void doit() { |
| 53 | foo(3); |
| 54 | foo('a'); |
| 55 | foo2('A'); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | namespace test_return_type_deduction { |
| 60 | |
| 61 | void doit() { |
| 62 | |
| 63 | auto L = [](auto a, auto b) { |
| 64 | if ( a > b ) return a; |
| 65 | return b; |
| 66 | }; |
| 67 | L(2, 4); |
| 68 | { |
| 69 | auto L2 = [](auto a, int i) { |
| 70 | return a + i; |
| 71 | }; |
| 72 | L2(3.14, 2); |
| 73 | } |
| 74 | { |
| 75 | int a; //expected-note{{declared here}} |
| 76 | auto B = []() { return ^{ return a; }; }; //expected-error{{cannot be implicitly capture}}\ |
| 77 | //expected-note{{begins here}} |
| 78 | //[](){ return ({int b = 5; return 'c'; 'x';}); }; |
| 79 | |
| 80 | //auto X = ^{ return a; }; |
| 81 | |
| 82 | //auto Y = []() -> auto { return 3; return 'c'; }; |
| 83 | |
| 84 | } |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | |
| 89 | namespace test_no_capture{ |
| 90 | void doit() { |
| 91 | const int x = 10; //expected-note{{declared here}} |
| 92 | { |
| 93 | // should not capture 'x' - variable undergoes lvalue-to-rvalue |
| 94 | auto L = [=](auto a) { |
| 95 | int y = x; |
| 96 | return a + y; |
| 97 | }; |
| 98 | ASSERT_NO_CAPTURES(L); |
| 99 | } |
| 100 | { |
| 101 | // should not capture 'x' - even though certain instantiations require |
| 102 | auto L = [](auto a) { //expected-note{{begins here}} |
| 103 | DEFINE_SELECTOR(a); |
| 104 | F_CALL(x, a); //expected-error{{'x' cannot be implicitly captured}} |
| 105 | }; |
| 106 | ASSERT_NO_CAPTURES(L); |
| 107 | L('s'); //expected-note{{in instantiation of}} |
| 108 | } |
| 109 | { |
| 110 | // Does not capture because no default capture in inner most lambda 'b' |
| 111 | auto L = [=](auto a) { |
| 112 | return [=](int p) { |
| 113 | return [](auto b) { |
| 114 | DEFINE_SELECTOR(a); |
| 115 | F_CALL(x, a); |
| 116 | return 0; |
| 117 | }; |
| 118 | }; |
| 119 | }; |
| 120 | ASSERT_NO_CAPTURES(L); |
| 121 | } |
| 122 | } // doit |
| 123 | } // namespace |
| 124 | |
| 125 | namespace test_capture_of_potentially_evaluated_expression { |
| 126 | void doit() { |
| 127 | const int x = 5; |
| 128 | { |
| 129 | auto L = [=](auto a) { |
| 130 | DEFINE_SELECTOR(a); |
| 131 | F_CALL(x, a); |
| 132 | }; |
| 133 | static_assert(sizeof(L) == 4, "Must be captured"); |
| 134 | } |
| 135 | { |
| 136 | int j = 0; //expected-note{{declared}} |
| 137 | auto L = [](auto a) { //expected-note{{begins here}} |
| 138 | return j + 1; //expected-error{{cannot be implicitly captured}} |
| 139 | }; |
| 140 | } |
| 141 | { |
| 142 | const int x = 10; |
| 143 | auto L = [](auto a) { |
| 144 | //const int y = 20; |
| 145 | return [](int p) { |
| 146 | return [](auto b) { |
| 147 | DEFINE_SELECTOR(a); |
| 148 | F_CALL(x, a); |
| 149 | return 0; |
| 150 | }; |
| 151 | }; |
| 152 | }; |
| 153 | auto M = L(3); |
| 154 | auto N = M(5); |
| 155 | |
| 156 | } |
| 157 | |
| 158 | { // if the nested capture does not implicitly or explicitly allow any captures |
| 159 | // nothing should capture - and instantiations will create errors if needed. |
| 160 | const int x = 0; |
| 161 | auto L = [=](auto a) { // <-- #A |
| 162 | const int y = 0; |
| 163 | return [](auto b) { // <-- #B |
| 164 | int c[sizeof(b)]; |
| 165 | f(x, c); |
| 166 | f(y, c); |
| 167 | int i = x; |
| 168 | }; |
| 169 | }; |
| 170 | ASSERT_NO_CAPTURES(L); |
| 171 | auto M_int = L(2); |
| 172 | ASSERT_NO_CAPTURES(M_int); |
| 173 | } |
| 174 | { // Permutations of this example must be thoroughly tested! |
| 175 | const int x = 0; |
| 176 | sample::X cx{5}; |
| 177 | auto L = [=](auto a) { |
| 178 | const int z = 3; |
| 179 | return [&,a](auto b) { |
| 180 | const int y = 5; |
| 181 | return [=](auto c) { |
| 182 | int d[sizeof(a) == sizeof(c) || sizeof(c) == sizeof(b) ? 2 : 1]; |
| 183 | f(x, d); |
| 184 | f(y, d); |
| 185 | f(z, d); |
| 186 | decltype(a) A = a; |
| 187 | decltype(b) B = b; |
| 188 | const int &i = cx.i; |
| 189 | }; |
| 190 | }; |
| 191 | }; |
| 192 | auto M = L(3)(3.5); |
| 193 | M(3.14); |
| 194 | } |
| 195 | } |
| 196 | namespace Test_no_capture_of_clearly_no_odr_use { |
| 197 | auto foo() { |
| 198 | const int x = 10; |
| 199 | auto L = [=](auto a) { |
| 200 | return [=](auto b) { |
| 201 | return [=](auto c) { |
| 202 | int A = x; |
| 203 | return A; |
| 204 | }; |
| 205 | }; |
| 206 | }; |
| 207 | auto M = L(1); |
| 208 | auto N = M(2.14); |
| 209 | ASSERT_NO_CAPTURES(L); |
| 210 | ASSERT_NO_CAPTURES(N); |
| 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | namespace Test_capture_of_odr_use_var { |
| 217 | auto foo() { |
| 218 | const int x = 10; |
| 219 | auto L = [=](auto a) { |
| 220 | return [=](auto b) { |
| 221 | return [=](auto c) { |
| 222 | int A = x; |
| 223 | const int &i = x; |
| 224 | decltype(a) A2 = a; |
| 225 | return A; |
| 226 | }; |
| 227 | }; |
| 228 | }; |
| 229 | auto M_int = L(1); |
| 230 | auto N_int_int = M_int(2); |
| 231 | ASSERT_CLOSURE_SIZE_EXACT(L, sizeof(x)); |
| 232 | // M_int captures both a & x |
| 233 | ASSERT_CLOSURE_SIZE_EXACT(M_int, sizeof(x) + sizeof(int)); |
| 234 | // N_int_int captures both a & x |
| 235 | ASSERT_CLOSURE_SIZE_EXACT(N_int_int, sizeof(x) + sizeof(int)); |
| 236 | auto M_double = L(3.14); |
| 237 | ASSERT_CLOSURE_SIZE(M_double, sizeof(x) + sizeof(double)); |
| 238 | |
| 239 | return 0; |
| 240 | } |
| 241 | auto run = foo(); |
| 242 | } |
| 243 | |
| 244 | } |
| 245 | namespace more_nested_captures_1 { |
| 246 | template<class T> struct Y { |
| 247 | static void f(int, double, ...) { } |
| 248 | template<class R> |
| 249 | static void f(const int&, R, ...) { } |
| 250 | template<class R> |
| 251 | void foo(R t) { |
| 252 | const int x = 10; //expected-note{{declared here}} |
| 253 | auto L = [](auto a) { |
| 254 | return [=](auto b) { |
| 255 | return [=](auto c) { |
| 256 | f(x, c, b, a); //expected-error{{reference to local variable 'x'}} |
| 257 | return 0; |
| 258 | }; |
| 259 | }; |
| 260 | }; |
| 261 | auto M = L(t); |
| 262 | auto N = M('b'); |
| 263 | N(3.14); |
| 264 | N(5); //expected-note{{in instantiation of}} |
| 265 | } |
| 266 | }; |
| 267 | Y<int> yi; |
| 268 | int run = (yi.foo(3.14), 0); //expected-note{{in instantiation of}} |
| 269 | } |
| 270 | |
| 271 | |
| 272 | namespace more_nested_captures_1_1 { |
| 273 | template<class T> struct Y { |
| 274 | static void f(int, double, ...) { } |
| 275 | template<class R> |
| 276 | static void f(const int&, R, ...) { } |
| 277 | template<class R> |
| 278 | void foo(R t) { |
| 279 | const int x = 10; //expected-note{{declared here}} |
| 280 | auto L = [](auto a) { |
| 281 | return [=](char b) { |
| 282 | return [=](auto c) { |
| 283 | f(x, c, b, a); //expected-error{{reference to local variable 'x'}} |
| 284 | return 0; |
| 285 | }; |
| 286 | }; |
| 287 | }; |
| 288 | auto M = L(t); |
| 289 | auto N = M('b'); |
| 290 | N(3.14); |
| 291 | N(5); //expected-note{{in instantiation of}} |
| 292 | } |
| 293 | }; |
| 294 | Y<int> yi; |
| 295 | int run = (yi.foo(3.14), 0); //expected-note{{in instantiation of}} |
| 296 | } |
| 297 | namespace more_nested_captures_1_2 { |
| 298 | template<class T> struct Y { |
| 299 | static void f(int, double, ...) { } |
| 300 | template<class R> |
| 301 | static void f(const int&, R, ...) { } |
| 302 | template<class R> |
| 303 | void foo(R t) { |
| 304 | const int x = 10; |
| 305 | auto L = [=](auto a) { |
| 306 | return [=](char b) { |
| 307 | return [=](auto c) { |
| 308 | f(x, c, b, a); |
| 309 | return 0; |
| 310 | }; |
| 311 | }; |
| 312 | }; |
| 313 | auto M = L(t); |
| 314 | auto N = M('b'); |
| 315 | N(3.14); |
| 316 | N(5); |
| 317 | } |
| 318 | }; |
| 319 | Y<int> yi; |
| 320 | int run = (yi.foo(3.14), 0); |
| 321 | } |
| 322 | |
| 323 | namespace more_nested_captures_1_3 { |
| 324 | template<class T> struct Y { |
| 325 | static void f(int, double, ...) { } |
| 326 | template<class R> |
| 327 | static void f(const int&, R, ...) { } |
| 328 | template<class R> |
| 329 | void foo(R t) { |
| 330 | const int x = 10; //expected-note{{declared here}} |
| 331 | auto L = [=](auto a) { |
| 332 | return [](auto b) { |
| 333 | const int y = 0; |
| 334 | return [=](auto c) { |
| 335 | f(x, c, b); //expected-error{{reference to local variable 'x'}} |
| 336 | f(y, b, c); |
| 337 | return 0; |
| 338 | }; |
| 339 | }; |
| 340 | }; |
| 341 | auto M = L(t); |
| 342 | auto N = M('b'); |
| 343 | N(3.14); |
| 344 | N(5); //expected-note{{in instantiation of}} |
| 345 | } |
| 346 | }; |
| 347 | Y<int> yi; |
| 348 | int run = (yi.foo(3.14), 0); //expected-note{{in instantiation of}} |
| 349 | } |
| 350 | |
| 351 | |
| 352 | namespace more_nested_captures_1_4 { |
| 353 | template<class T> struct Y { |
| 354 | static void f(int, double, ...) { } |
| 355 | template<class R> |
| 356 | static void f(const int&, R, ...) { } |
| 357 | template<class R> |
| 358 | void foo(R t) { |
| 359 | const int x = 10; //expected-note{{declared here}} |
| 360 | auto L = [=](auto a) { |
| 361 | T t2{t}; |
| 362 | return [](auto b) { |
| 363 | const int y = 0; //expected-note{{declared here}} |
| 364 | return [](auto c) { //expected-note 2{{lambda expression begins here}} |
| 365 | f(x, c); //expected-error{{variable 'x'}} |
| 366 | f(y, c); //expected-error{{variable 'y'}} |
| 367 | return 0; |
| 368 | }; |
| 369 | }; |
| 370 | }; |
| 371 | auto M = L(t); |
| 372 | auto N_char = M('b'); |
| 373 | N_char(3.14); |
| 374 | auto N_double = M(3.14); |
| 375 | N_double(3.14); |
| 376 | N_char(3); //expected-note{{in instantiation of}} |
| 377 | } |
| 378 | }; |
| 379 | Y<int> yi; |
| 380 | int run = (yi.foo('a'), 0); //expected-note{{in instantiation of}} |
| 381 | } |
| 382 | |
| 383 | |
| 384 | namespace more_nested_captures_2 { |
| 385 | template<class T> struct Y { |
| 386 | static void f(int, double) { } |
| 387 | template<class R> |
| 388 | static void f(const int&, R) { } |
| 389 | template<class R> |
| 390 | void foo(R t) { |
| 391 | const int x = 10; |
| 392 | auto L = [=](auto a) { |
| 393 | return [=](auto b) { |
| 394 | return [=](auto c) { |
| 395 | f(x, c); |
| 396 | return 0; |
| 397 | }; |
| 398 | }; |
| 399 | }; |
| 400 | auto M = L(t); |
| 401 | auto N = M('b'); |
| 402 | N(3); |
| 403 | N(3.14); |
| 404 | } |
| 405 | }; |
| 406 | Y<int> yi; |
| 407 | int run = (yi.foo(3.14), 0); |
| 408 | |
| 409 | } |
| 410 | |
| 411 | namespace more_nested_captures_3 { |
| 412 | template<class T> struct Y { |
| 413 | static void f(int, double) { } |
| 414 | template<class R> |
| 415 | static void f(const int&, R) { } |
| 416 | template<class R> |
| 417 | void foo(R t) { |
| 418 | const int x = 10; //expected-note{{declared here}} |
| 419 | auto L = [](auto a) { |
| 420 | return [=](auto b) { |
| 421 | return [=](auto c) { |
| 422 | f(x, c); //expected-error{{reference to local variable 'x'}} |
| 423 | return 0; |
| 424 | }; |
| 425 | }; |
| 426 | }; |
| 427 | auto M = L(t); |
| 428 | auto N = M('b'); |
| 429 | N(3); //expected-note{{in instantiation of}} |
| 430 | N(3.14); |
| 431 | } |
| 432 | }; |
| 433 | Y<int> yi; |
| 434 | int run = (yi.foo(3.14), 0); //expected-note{{in instantiation of}} |
| 435 | |
| 436 | } |
| 437 | |
| 438 | namespace more_nested_captures_4 { |
| 439 | template<class T> struct Y { |
| 440 | static void f(int, double) { } |
| 441 | template<class R> |
| 442 | static void f(const int&, R) { } |
| 443 | template<class R> |
| 444 | void foo(R t) { |
| 445 | const int x = 10; //expected-note{{'x' declared here}} |
| 446 | auto L = [](auto a) { |
| 447 | return [=](char b) { |
| 448 | return [=](auto c) { |
| 449 | f(x, c); //expected-error{{reference to local variable 'x'}} |
| 450 | return 0; |
| 451 | }; |
| 452 | }; |
| 453 | }; |
| 454 | auto M = L(t); |
| 455 | auto N = M('b'); |
| 456 | N(3); //expected-note{{in instantiation of}} |
| 457 | N(3.14); |
| 458 | } |
| 459 | }; |
| 460 | Y<int> yi; |
| 461 | int run = (yi.foo(3.14), 0); //expected-note{{in instantiation of}} |
| 462 | |
| 463 | } |
| 464 | |
| 465 | namespace more_nested_captures_5 { |
| 466 | template<class T> struct Y { |
| 467 | static void f(int, double) { } |
| 468 | template<class R> |
| 469 | static void f(const int&, R) { } |
| 470 | template<class R> |
| 471 | void foo(R t) { |
| 472 | const int x = 10; |
| 473 | auto L = [=](auto a) { |
| 474 | return [=](char b) { |
| 475 | return [=](auto c) { |
| 476 | f(x, c); |
| 477 | return 0; |
| 478 | }; |
| 479 | }; |
| 480 | }; |
| 481 | auto M = L(t); |
| 482 | auto N = M('b'); |
| 483 | N(3); |
| 484 | N(3.14); |
| 485 | } |
| 486 | }; |
| 487 | Y<int> yi; |
| 488 | int run = (yi.foo(3.14), 0); |
| 489 | |
| 490 | } |
| 491 | |
| 492 | namespace lambdas_in_NSDMIs { |
| 493 | template<class T> |
| 494 | struct L { |
| 495 | T t{}; |
| 496 | T t2 = ([](auto a) { return [](auto b) { return b; };})(t)(t); |
| 497 | T t3 = ([](auto a) { return a; })(t); |
| 498 | }; |
| 499 | L<int> l; |
| 500 | int run = l.t2; |
| 501 | } |
| 502 | namespace test_nested_decltypes_in_trailing_return_types { |
| 503 | int foo() { |
| 504 | auto L = [](auto a) { |
| 505 | return [](auto b, decltype(a) b2) -> decltype(a) { |
| 506 | return decltype(a){}; |
| 507 | }; |
| 508 | }; |
| 509 | auto M = L(3.14); |
| 510 | M('a', 6.26); |
| 511 | return 0; |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | namespace more_this_capture_1 { |
| 516 | struct X { |
| 517 | void f(int) { } |
| 518 | static void f(double) { } |
| 519 | void foo() { |
| 520 | { |
| 521 | auto L = [=](auto a) { |
| 522 | f(a); |
| 523 | }; |
| 524 | L(3); |
| 525 | L(3.13); |
| 526 | } |
| 527 | { |
| 528 | auto L = [](auto a) { |
| 529 | f(a); //expected-error{{this}} |
| 530 | }; |
| 531 | L(3.13); |
| 532 | L(2); //expected-note{{in instantiation}} |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | int g() { |
| 537 | auto L = [=](auto a) { |
| 538 | return [](int i) { |
| 539 | return [=](auto b) { |
| 540 | f(b); |
| 541 | int x = i; |
| 542 | }; |
| 543 | }; |
| 544 | }; |
| 545 | auto M = L(0.0); |
| 546 | auto N = M(3); |
| 547 | N(5.32); // OK |
| 548 | return 0; |
| 549 | } |
| 550 | }; |
| 551 | int run = X{}.g(); |
| 552 | } |
| 553 | namespace more_this_capture_1_1 { |
| 554 | struct X { |
| 555 | void f(int) { } |
| 556 | static void f(double) { } |
| 557 | |
| 558 | int g() { |
| 559 | auto L = [=](auto a) { |
| 560 | return [](int i) { |
| 561 | return [=](auto b) { |
| 562 | f(decltype(a){}); //expected-error{{this}} |
| 563 | int x = i; |
| 564 | }; |
| 565 | }; |
| 566 | }; |
| 567 | auto M = L(0.0); |
| 568 | auto N = M(3); |
| 569 | N(5.32); // OK |
| 570 | L(3); // expected-note{{instantiation}} |
| 571 | return 0; |
| 572 | } |
| 573 | }; |
| 574 | int run = X{}.g(); |
| 575 | } |
| 576 | |
| 577 | namespace more_this_capture_1_1_1 { |
| 578 | struct X { |
| 579 | void f(int) { } |
| 580 | static void f(double) { } |
| 581 | |
| 582 | int g() { |
| 583 | auto L = [=](auto a) { |
| 584 | return [](auto b) { |
| 585 | return [=](int i) { |
| 586 | f(b); |
| 587 | f(decltype(a){}); //expected-error{{this}} |
| 588 | }; |
| 589 | }; |
| 590 | }; |
| 591 | auto M = L(0.0); // OK |
| 592 | auto N = M(3.3); //OK |
| 593 | auto M_int = L(0); //expected-note{{instantiation}} |
| 594 | return 0; |
| 595 | } |
| 596 | }; |
| 597 | int run = X{}.g(); |
| 598 | } |
| 599 | |
| 600 | |
| 601 | namespace more_this_capture_1_1_1_1 { |
| 602 | struct X { |
| 603 | void f(int) { } |
| 604 | static void f(double) { } |
| 605 | |
| 606 | int g() { |
| 607 | auto L = [=](auto a) { |
| 608 | return [](auto b) { |
| 609 | return [=](int i) { |
| 610 | f(b); //expected-error{{this}} |
| 611 | f(decltype(a){}); |
| 612 | }; |
| 613 | }; |
| 614 | }; |
| 615 | auto M_double = L(0.0); // OK |
| 616 | auto N = M_double(3); //expected-note{{instantiation}} |
| 617 | |
| 618 | return 0; |
| 619 | } |
| 620 | }; |
| 621 | int run = X{}.g(); |
| 622 | } |
| 623 | |
| 624 | namespace more_this_capture_2 { |
| 625 | struct X { |
| 626 | void f(int) { } |
| 627 | static void f(double) { } |
| 628 | |
| 629 | int g() { |
| 630 | auto L = [=](auto a) { |
| 631 | return [](int i) { |
| 632 | return [=](auto b) { |
| 633 | f(b); //expected-error{{'this' cannot}} |
| 634 | int x = i; |
| 635 | }; |
| 636 | }; |
| 637 | }; |
| 638 | auto M = L(0.0); |
| 639 | auto N = M(3); |
| 640 | N(5); // NOT OK expected-note{{in instantiation of}} |
| 641 | return 0; |
| 642 | } |
| 643 | }; |
| 644 | int run = X{}.g(); |
| 645 | } |
| 646 | namespace diagnose_errors_early_in_generic_lambdas { |
| 647 | |
| 648 | int foo() |
| 649 | { |
| 650 | |
| 651 | { // This variable is used and must be caught early, do not need instantiation |
| 652 | const int x = 0; //expected-note{{declared}} |
| 653 | auto L = [](auto a) { //expected-note{{begins}} |
| 654 | const int &r = x; //expected-error{{variable}} |
| 655 | }; |
| 656 | } |
| 657 | { // This variable is not used |
| 658 | const int x = 0; |
| 659 | auto L = [](auto a) { |
| 660 | int i = x; |
| 661 | }; |
| 662 | } |
| 663 | { |
| 664 | |
| 665 | const int x = 0; //expected-note{{declared}} |
| 666 | auto L = [=](auto a) { // <-- #A |
| 667 | const int y = 0; |
| 668 | return [](auto b) { //expected-note{{begins}} |
| 669 | int c[sizeof(b)]; |
| 670 | f(x, c); |
| 671 | f(y, c); |
| 672 | int i = x; |
| 673 | // This use will always be an error regardless of instantatiation |
| 674 | // so diagnose this early. |
| 675 | const int &r = x; //expected-error{{variable}} |
| 676 | }; |
| 677 | }; |
| 678 | |
| 679 | } |
| 680 | return 0; |
| 681 | } |
| 682 | |
| 683 | int run = foo(); |
| 684 | } |
| 685 | |
| 686 | namespace generic_nongenerics_interleaved_1 { |
| 687 | int foo() { |
| 688 | { |
| 689 | auto L = [](int a) { |
| 690 | int y = 10; |
| 691 | return [=](auto b) { |
| 692 | return a + y; |
| 693 | }; |
| 694 | }; |
| 695 | auto M = L(3); |
| 696 | M(5); |
| 697 | } |
| 698 | { |
| 699 | int x; |
| 700 | auto L = [](int a) { |
| 701 | int y = 10; |
| 702 | return [=](auto b) { |
| 703 | return a + y; |
| 704 | }; |
| 705 | }; |
| 706 | auto M = L(3); |
| 707 | M(5); |
| 708 | } |
| 709 | { |
| 710 | // FIXME: why are there 2 error messages here? |
| 711 | int x; |
| 712 | auto L = [](auto a) { //expected-note {{declared here}} |
| 713 | int y = 10; //expected-note {{declared here}} |
| 714 | return [](int b) { //expected-note 2{{expression begins here}} |
| 715 | return [=] (auto c) { |
| 716 | return a + y; //expected-error 2{{cannot be implicitly captured}} |
| 717 | }; |
| 718 | }; |
| 719 | }; |
| 720 | } |
| 721 | { |
| 722 | int x; |
| 723 | auto L = [](auto a) { |
| 724 | int y = 10; |
| 725 | return [=](int b) { |
| 726 | return [=] (auto c) { |
| 727 | return a + y; |
| 728 | }; |
| 729 | }; |
| 730 | }; |
| 731 | } |
| 732 | return 1; |
| 733 | } |
| 734 | |
| 735 | int run = foo(); |
| 736 | } |
| 737 | namespace dont_capture_refs_if_initialized_with_constant_expressions { |
| 738 | |
| 739 | auto foo(int i) { |
| 740 | // This is surprisingly not odr-used within the lambda! |
| 741 | static int j; |
| 742 | j = i; |
| 743 | int &ref_j = j; |
| 744 | return [](auto a) { return ref_j; }; // ok |
| 745 | } |
| 746 | |
| 747 | template<class T> |
| 748 | auto foo2(T t) { |
| 749 | // This is surprisingly not odr-used within the lambda! |
| 750 | static T j; |
| 751 | j = t; |
| 752 | T &ref_j = j; |
| 753 | return [](auto a) { return ref_j; }; // ok |
| 754 | } |
| 755 | |
| 756 | int do_test() { |
| 757 | auto L = foo(3); |
| 758 | auto L_int = L(3); |
| 759 | auto L_char = L('a'); |
| 760 | auto L1 = foo2(3.14); |
| 761 | auto L1_int = L1(3); |
| 762 | auto L1_char = L1('a'); |
| 763 | return 0; |
| 764 | } |
| 765 | |
| 766 | } // dont_capture_refs_if_initialized_with_constant_expressions |
| 767 | |
| 768 | namespace test_conversion_to_fptr { |
| 769 | |
| 770 | template<class T> struct X { |
| 771 | |
| 772 | T (*fp)(T) = [](auto a) { return a; }; |
| 773 | |
| 774 | }; |
| 775 | |
| 776 | X<int> xi; |
| 777 | |
| 778 | template<class T> |
| 779 | void fooT(T t, T (*fp)(T) = [](auto a) { return a; }) { |
| 780 | fp(t); |
| 781 | } |
| 782 | |
| 783 | int test() { |
| 784 | { |
| 785 | auto L = [](auto a) { return a; }; |
| 786 | int (*fp)(int) = L; |
| 787 | fp(5); |
| 788 | L(3); |
| 789 | char (*fc)(char) = L; |
| 790 | fc('b'); |
| 791 | L('c'); |
| 792 | double (*fd)(double) = L; |
| 793 | fd(3.14); |
| 794 | fd(6.26); |
| 795 | L(4.25); |
| 796 | } |
| 797 | { |
| 798 | auto L = [](auto a) ->int { return a; }; //expected-note 2{{candidate template ignored}} |
| 799 | int (*fp)(int) = L; |
| 800 | char (*fc)(char) = L; //expected-error{{no viable conversion}} |
| 801 | double (*fd)(double) = L; //expected-error{{no viable conversion}} |
| 802 | } |
| 803 | { |
| 804 | int x = 5; |
| 805 | auto L = [=](auto b, char c = 'x') { |
| 806 | int i = x; |
| 807 | return [](auto a) ->decltype(a) { return a; }; |
| 808 | }; |
| 809 | int (*fp)(int) = L(8); |
| 810 | fp(5); |
| 811 | L(3); |
| 812 | char (*fc)(char) = L('a'); |
| 813 | fc('b'); |
| 814 | L('c'); |
| 815 | double (*fd)(double) = L(3.14); |
| 816 | fd(3.14); |
| 817 | fd(6.26); |
| 818 | |
| 819 | } |
| 820 | { |
| 821 | auto L = [=](auto b) { |
| 822 | return [](auto a) ->decltype(b)* { return (decltype(b)*)0; }; |
| 823 | }; |
| 824 | int* (*fp)(int) = L(8); |
| 825 | fp(5); |
| 826 | L(3); |
| 827 | char* (*fc)(char) = L('a'); |
| 828 | fc('b'); |
| 829 | L('c'); |
| 830 | double* (*fd)(double) = L(3.14); |
| 831 | fd(3.14); |
| 832 | fd(6.26); |
| 833 | } |
| 834 | { |
| 835 | auto L = [=](auto b) { |
| 836 | return [](auto a) ->decltype(b)* { return (decltype(b)*)0; }; //expected-note{{candidate template ignored}} |
| 837 | }; |
| 838 | char* (*fp)(int) = L('8'); |
| 839 | fp(5); |
| 840 | char* (*fc)(char) = L('a'); |
| 841 | fc('b'); |
| 842 | double* (*fi)(int) = L(3.14); |
| 843 | fi(5); |
| 844 | int* (*fi2)(int) = L(3.14); //expected-error{{no viable conversion}} |
| 845 | } |
| 846 | |
| 847 | { |
| 848 | auto L = [=](auto b) { |
| 849 | return [](auto a) { |
| 850 | return [=](auto c) { |
| 851 | return [](auto d) ->decltype(a + b + c + d) { return d; }; |
| 852 | }; |
| 853 | }; |
| 854 | }; |
| 855 | int (*fp)(int) = L('8')(3)(short{}); |
| 856 | double (*fs)(char) = L(3.14)(short{})('4'); |
| 857 | } |
| 858 | |
| 859 | fooT(3); |
| 860 | fooT('a'); |
| 861 | fooT(3.14); |
| 862 | fooT("abcdefg"); |
| 863 | return 0; |
| 864 | } |
| 865 | int run2 = test(); |
| 866 | |
| 867 | } |
| 868 | |
| 869 | |
| 870 | namespace this_capture { |
| 871 | void f(char, int) { } |
| 872 | template<class T> |
| 873 | void f(T, const int&) { } |
| 874 | |
| 875 | struct X { |
| 876 | int x = 0; |
| 877 | void foo() { |
| 878 | auto L = [=](auto a) { |
| 879 | return [=](auto b) { |
| 880 | //f(a, x++); |
| 881 | x++; |
| 882 | }; |
| 883 | }; |
| 884 | L('a')(5); |
| 885 | L('b')(4); |
| 886 | L(3.14)('3'); |
| 887 | |
| 888 | } |
| 889 | |
| 890 | }; |
| 891 | |
| 892 | int run = (X{}.foo(), 0); |
| 893 | |
| 894 | namespace this_capture_unresolvable { |
| 895 | struct X { |
| 896 | void f(int) { } |
| 897 | static void f(double) { } |
| 898 | |
| 899 | int g() { |
| 900 | auto lam = [=](auto a) { f(a); }; // captures 'this' |
| 901 | lam(0); // ok. |
| 902 | lam(0.0); // ok. |
| 903 | return 0; |
| 904 | } |
| 905 | int g2() { |
| 906 | auto lam = [](auto a) { f(a); }; // expected-error{{'this'}} |
| 907 | lam(0); // expected-note{{in instantiation of}} |
| 908 | lam(0.0); // ok. |
| 909 | return 0; |
| 910 | } |
| 911 | double (*fd)(double) = [](auto a) { f(a); return a; }; |
| 912 | |
| 913 | }; |
| 914 | |
| 915 | int run = X{}.g(); |
| 916 | |
| 917 | } |
| 918 | |
| 919 | namespace check_nsdmi_and_this_capture_of_member_functions { |
| 920 | |
| 921 | struct FunctorDouble { |
| 922 | template<class T> FunctorDouble(T t) { t(2.14); }; |
| 923 | }; |
| 924 | struct FunctorInt { |
| 925 | template<class T> FunctorInt(T t) { t(2); }; //expected-note{{in instantiation of}} |
| 926 | }; |
| 927 | |
| 928 | template<class T> struct YUnresolvable { |
| 929 | void f(int) { } |
| 930 | static void f(double) { } |
| 931 | |
| 932 | T t = [](auto a) { f(a); return a; }; |
| 933 | T t2 = [=](auto b) { f(b); return b; }; |
| 934 | }; |
| 935 | |
| 936 | template<class T> struct YUnresolvable2 { |
| 937 | void f(int) { } |
| 938 | static void f(double) { } |
| 939 | |
| 940 | T t = [](auto a) { f(a); return a; }; //expected-error{{'this'}} \ |
| 941 | //expected-note{{in instantiation of}} |
| 942 | T t2 = [=](auto b) { f(b); return b; }; |
| 943 | }; |
| 944 | |
| 945 | |
| 946 | YUnresolvable<FunctorDouble> yud; |
| 947 | // This will cause an error since it call's with an int and calls a member function. |
| 948 | YUnresolvable2<FunctorInt> yui; |
| 949 | |
| 950 | |
| 951 | template<class T> struct YOnlyStatic { |
| 952 | static void f(double) { } |
| 953 | |
| 954 | T t = [](auto a) { f(a); return a; }; |
| 955 | }; |
| 956 | YOnlyStatic<FunctorDouble> yos; |
| 957 | template<class T> struct YOnlyNonStatic { |
| 958 | void f(int) { } |
| 959 | |
| 960 | T t = [](auto a) { f(a); return a; }; //expected-error{{'this'}} |
| 961 | }; |
| 962 | |
| 963 | |
| 964 | } |
| 965 | |
| 966 | |
| 967 | namespace check_nsdmi_and_this_capture_of_data_members { |
| 968 | |
| 969 | struct FunctorDouble { |
| 970 | template<class T> FunctorDouble(T t) { t(2.14); }; |
| 971 | }; |
| 972 | struct FunctorInt { |
| 973 | template<class T> FunctorInt(T t) { t(2); }; |
| 974 | }; |
| 975 | |
| 976 | template<class T> struct YThisCapture { |
| 977 | const int x = 10; |
| 978 | static double d; |
| 979 | T t = [](auto a) { return x; }; //expected-error{{'this'}} |
| 980 | T t2 = [](auto b) { return d; }; |
| 981 | T t3 = [this](auto a) { |
| 982 | return [=](auto b) { |
| 983 | return x; |
| 984 | }; |
| 985 | }; |
| 986 | T t4 = [=](auto a) { |
| 987 | return [=](auto b) { |
| 988 | return x; |
| 989 | }; |
| 990 | }; |
| 991 | T t5 = [](auto a) { |
| 992 | return [=](auto b) { |
| 993 | return x; //expected-error{{'this'}} |
| 994 | }; |
| 995 | }; |
| 996 | }; |
| 997 | |
| 998 | template<class T> double YThisCapture<T>::d = 3.14; |
| 999 | |
| 1000 | |
| 1001 | } |
| 1002 | |
| 1003 | |
| 1004 | #ifdef DELAYED_TEMPLATE_PARSING |
| 1005 | template<class T> void foo_no_error(T t) { |
| 1006 | auto L = []() |
| 1007 | { return t; }; |
| 1008 | } |
| 1009 | template<class T> void foo(T t) { //expected-note 2{{declared here}} |
| 1010 | auto L = []() //expected-note 2{{begins here}} |
| 1011 | { return t; }; //expected-error 2{{cannot be implicitly captured}} |
| 1012 | } |
| 1013 | template void foo(int); //expected-note{{in instantiation of}} |
| 1014 | |
| 1015 | #else |
| 1016 | |
| 1017 | template<class T> void foo(T t) { //expected-note{{declared here}} |
| 1018 | auto L = []() //expected-note{{begins here}} |
| 1019 | { return t; }; //expected-error{{cannot be implicitly captured}} |
| 1020 | } |
| 1021 | |
| 1022 | #endif |
| 1023 | } |
| 1024 | |
| 1025 | namespace no_this_capture_for_static { |
| 1026 | |
| 1027 | struct X { |
| 1028 | static void f(double) { } |
| 1029 | |
| 1030 | int g() { |
| 1031 | auto lam = [=](auto a) { f(a); }; |
| 1032 | lam(0); // ok. |
| 1033 | ASSERT_NO_CAPTURES(lam); |
| 1034 | return 0; |
| 1035 | } |
| 1036 | }; |
| 1037 | |
| 1038 | int run = X{}.g(); |
| 1039 | } |
| 1040 | |
| 1041 | namespace this_capture_for_non_static { |
| 1042 | |
| 1043 | struct X { |
| 1044 | void f(double) { } |
| 1045 | |
| 1046 | int g() { |
| 1047 | auto L = [=](auto a) { f(a); }; |
| 1048 | L(0); |
| 1049 | auto L2 = [](auto a) { f(a); }; //expected-error {{cannot be implicitly captured}} |
| 1050 | return 0; |
| 1051 | } |
| 1052 | }; |
| 1053 | |
| 1054 | int run = X{}.g(); |
| 1055 | } |
| 1056 | |
| 1057 | namespace this_captures_with_num_args_disambiguation { |
| 1058 | |
| 1059 | struct X { |
| 1060 | void f(int) { } |
| 1061 | static void f(double, int i) { } |
| 1062 | int g() { |
| 1063 | auto lam = [](auto a) { f(a, a); }; |
| 1064 | lam(0); |
| 1065 | return 0; |
| 1066 | } |
| 1067 | }; |
| 1068 | |
| 1069 | int run = X{}.g(); |
| 1070 | } |
| 1071 | namespace enclosing_function_is_template_this_capture { |
| 1072 | // Only error if the instantiation tries to use the member function. |
| 1073 | struct X { |
| 1074 | void f(int) { } |
| 1075 | static void f(double) { } |
| 1076 | template<class T> |
| 1077 | int g(T t) { |
| 1078 | auto L = [](auto a) { f(a); }; //expected-error{{'this'}} |
| 1079 | L(t); // expected-note{{in instantiation of}} |
| 1080 | return 0; |
| 1081 | } |
| 1082 | }; |
| 1083 | |
| 1084 | int run = X{}.g(0.0); // OK. |
| 1085 | int run2 = X{}.g(0); // expected-note{{in instantiation of}} |
| 1086 | |
| 1087 | |
| 1088 | } |
| 1089 | |
| 1090 | namespace enclosing_function_is_template_this_capture_2 { |
| 1091 | // This should error, even if not instantiated, since |
| 1092 | // this would need to be captured. |
| 1093 | struct X { |
| 1094 | void f(int) { } |
| 1095 | template<class T> |
| 1096 | int g(T t) { |
| 1097 | auto L = [](auto a) { f(a); }; //expected-error{{'this'}} |
| 1098 | L(t); |
| 1099 | return 0; |
| 1100 | } |
| 1101 | }; |
| 1102 | |
| 1103 | } |
| 1104 | |
| 1105 | |
| 1106 | namespace enclosing_function_is_template_this_capture_3 { |
| 1107 | // This should not error, this does not need to be captured. |
| 1108 | struct X { |
| 1109 | static void f(int) { } |
| 1110 | template<class T> |
| 1111 | int g(T t) { |
| 1112 | auto L = [](auto a) { f(a); }; |
| 1113 | L(t); |
| 1114 | return 0; |
| 1115 | } |
| 1116 | }; |
| 1117 | |
| 1118 | int run = X{}.g(0.0); // OK. |
| 1119 | int run2 = X{}.g(0); // OK. |
| 1120 | |
| 1121 | } |
| 1122 | |
| 1123 | namespace nested_this_capture_1 { |
| 1124 | struct X { |
| 1125 | void f(int) { } |
| 1126 | static void f(double) { } |
| 1127 | |
| 1128 | int g() { |
| 1129 | auto L = [=](auto a) { |
| 1130 | return [this]() { |
| 1131 | return [=](auto b) { |
| 1132 | f(b); |
| 1133 | }; |
| 1134 | }; |
| 1135 | }; |
| 1136 | auto M = L(0); |
| 1137 | auto N = M(); |
| 1138 | N(5); |
| 1139 | return 0; |
| 1140 | } |
| 1141 | }; |
| 1142 | |
| 1143 | int run = X{}.g(); |
| 1144 | |
| 1145 | } |
| 1146 | |
| 1147 | |
| 1148 | namespace nested_this_capture_2 { |
| 1149 | struct X { |
| 1150 | void f(int) { } |
| 1151 | static void f(double) { } |
| 1152 | |
| 1153 | int g() { |
| 1154 | auto L = [=](auto a) { |
| 1155 | return [&]() { |
| 1156 | return [=](auto b) { |
| 1157 | f(b); |
| 1158 | }; |
| 1159 | }; |
| 1160 | }; |
| 1161 | auto M = L(0); |
| 1162 | auto N = M(); |
| 1163 | N(5); |
| 1164 | N(3.14); |
| 1165 | return 0; |
| 1166 | } |
| 1167 | }; |
| 1168 | |
| 1169 | int run = X{}.g(); |
| 1170 | |
| 1171 | } |
| 1172 | |
| 1173 | namespace nested_this_capture_3_1 { |
| 1174 | struct X { |
| 1175 | template<class T> |
| 1176 | void f(int, T t) { } |
| 1177 | template<class T> |
| 1178 | static void f(double, T t) { } |
| 1179 | |
| 1180 | int g() { |
| 1181 | auto L = [=](auto a) { |
| 1182 | return [&](auto c) { |
| 1183 | return [=](auto b) { |
| 1184 | f(b, c); |
| 1185 | }; |
| 1186 | }; |
| 1187 | }; |
| 1188 | auto M = L(0); |
| 1189 | auto N = M('a'); |
| 1190 | N(5); |
| 1191 | N(3.14); |
| 1192 | return 0; |
| 1193 | } |
| 1194 | }; |
| 1195 | |
| 1196 | int run = X{}.g(); |
| 1197 | |
| 1198 | } |
| 1199 | |
| 1200 | |
| 1201 | namespace nested_this_capture_3_2 { |
| 1202 | struct X { |
| 1203 | void f(int) { } |
| 1204 | static void f(double) { } |
| 1205 | |
| 1206 | int g() { |
| 1207 | auto L = [=](auto a) { |
| 1208 | return [](int i) { |
| 1209 | return [=](auto b) { |
| 1210 | f(b); //expected-error {{'this' cannot}} |
| 1211 | int x = i; |
| 1212 | }; |
| 1213 | }; |
| 1214 | }; |
| 1215 | auto M = L(0.0); |
| 1216 | auto N = M(3); |
| 1217 | N(5); //expected-note {{in instantiation of}} |
| 1218 | N(3.14); // OK. |
| 1219 | return 0; |
| 1220 | } |
| 1221 | }; |
| 1222 | |
| 1223 | int run = X{}.g(); |
| 1224 | |
| 1225 | } |
| 1226 | |
| 1227 | namespace nested_this_capture_4 { |
| 1228 | struct X { |
| 1229 | void f(int) { } |
| 1230 | static void f(double) { } |
| 1231 | |
| 1232 | int g() { |
| 1233 | auto L = [](auto a) { |
| 1234 | return [=](auto i) { |
| 1235 | return [=](auto b) { |
| 1236 | f(b); //expected-error {{'this' cannot}} |
| 1237 | int x = i; |
| 1238 | }; |
| 1239 | }; |
| 1240 | }; |
| 1241 | auto M = L(0.0); |
| 1242 | auto N = M(3); |
| 1243 | N(5); //expected-note {{in instantiation of}} |
| 1244 | N(3.14); // OK. |
| 1245 | return 0; |
| 1246 | } |
| 1247 | }; |
| 1248 | |
| 1249 | int run = X{}.g(); |
| 1250 | |
| 1251 | } |
| 1252 | namespace capture_enclosing_function_parameters { |
| 1253 | |
| 1254 | |
| 1255 | inline auto foo(int x) { |
| 1256 | int i = 10; |
| 1257 | auto lambda = [=](auto z) { return x + z; }; |
| 1258 | return lambda; |
| 1259 | } |
| 1260 | |
| 1261 | int foo2() { |
| 1262 | auto L = foo(3); |
| 1263 | L(4); |
| 1264 | L('a'); |
| 1265 | L(3.14); |
| 1266 | return 0; |
| 1267 | } |
| 1268 | |
| 1269 | inline auto foo3(int x) { |
| 1270 | int local = 1; |
| 1271 | auto L = [=](auto a) { |
| 1272 | int i = a[local]; |
| 1273 | return [=](auto b) mutable { |
| 1274 | auto n = b; |
| 1275 | return [&, n](auto c) mutable { |
| 1276 | ++local; |
| 1277 | return ++x; |
| 1278 | }; |
| 1279 | }; |
| 1280 | }; |
| 1281 | auto M = L("foo-abc"); |
| 1282 | auto N = M("foo-def"); |
| 1283 | auto O = N("foo-ghi"); |
| 1284 | |
| 1285 | return L; |
| 1286 | } |
| 1287 | |
| 1288 | int main() { |
| 1289 | auto L3 = foo3(3); |
| 1290 | auto M3 = L3("L3-1"); |
| 1291 | auto N3 = M3("M3-1"); |
| 1292 | auto O3 = N3("N3-1"); |
| 1293 | N3("N3-2"); |
| 1294 | M3("M3-2"); |
| 1295 | M3("M3-3"); |
| 1296 | L3("L3-2"); |
| 1297 | } |
| 1298 | } // end ns |
| 1299 | |
| 1300 | namespace capture_arrays { |
| 1301 | |
| 1302 | inline int sum_array(int n) { |
| 1303 | int array2[5] = { 1, 2, 3, 4, 5}; |
| 1304 | |
| 1305 | auto L = [=](auto N) -> int { |
| 1306 | int sum = 0; |
| 1307 | int array[5] = { 1, 2, 3, 4, 5 }; |
| 1308 | sum += array2[sum]; |
| 1309 | sum += array2[N]; |
| 1310 | return 0; |
| 1311 | }; |
| 1312 | L(2); |
| 1313 | return L(n); |
| 1314 | } |
| 1315 | } |
| 1316 | |
| 1317 | namespace capture_non_odr_used_variable_because_named_in_instantiation_dependent_expressions { |
| 1318 | |
| 1319 | // even though 'x' is not odr-used, it should be captured. |
| 1320 | |
| 1321 | int test() { |
| 1322 | const int x = 10; |
| 1323 | auto L = [=](auto a) { |
| 1324 | (void) +x + a; |
| 1325 | }; |
| 1326 | ASSERT_CLOSURE_SIZE_EXACT(L, sizeof(x)); |
| 1327 | } |
| 1328 | |
| 1329 | } //end ns |
| 1330 | #ifdef MS_EXTENSIONS |
| 1331 | namespace explicit_spec { |
| 1332 | template<class R> struct X { |
| 1333 | template<class T> int foo(T t) { |
| 1334 | auto L = [](auto a) { return a; }; |
| 1335 | L(&t); |
| 1336 | return 0; |
| 1337 | } |
| 1338 | |
| 1339 | template<> int foo<char>(char c) { //expected-warning{{explicit specialization}} |
| 1340 | const int x = 10; |
| 1341 | auto LC = [](auto a) { return a; }; |
| 1342 | R r; |
| 1343 | LC(&r); |
| 1344 | auto L = [=](auto a) { |
| 1345 | return [=](auto b) { |
| 1346 | int d[sizeof(a)]; |
| 1347 | f(x, d); |
| 1348 | }; |
| 1349 | }; |
| 1350 | auto M = L(1); |
| 1351 | |
| 1352 | ASSERT_NO_CAPTURES(M); |
| 1353 | return 0; |
| 1354 | } |
| 1355 | |
| 1356 | }; |
| 1357 | |
| 1358 | int run_char = X<int>{}.foo('a'); |
| 1359 | int run_int = X<double>{}.foo(4); |
| 1360 | } |
Faisal Vali | c00e419 | 2013-11-07 05:17:06 +0000 | [diff] [blame] | 1361 | #endif // MS_EXTENSIONS |
| 1362 | |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 1363 | namespace nsdmi_capturing_this { |
| 1364 | struct X { |
| 1365 | int m = 10; |
| 1366 | int n = [this](auto) { return m; }(20); |
| 1367 | }; |
| 1368 | |
| 1369 | template<class T> |
| 1370 | struct XT { |
| 1371 | T m = 10; |
| 1372 | T n = [this](auto) { return m; }(20); |
| 1373 | }; |
| 1374 | |
| 1375 | XT<int> xt{}; |
| 1376 | |
| 1377 | |
| 1378 | } |