| 1 | // Copyright 2020 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package unreachable |
| 6 | |
| 7 | // This file produces masses of errors from the type checker due to |
| 8 | // missing returns statements and other things. |
| 9 | |
| 10 | type T int |
| 11 | |
| 12 | var x interface{} |
| 13 | var c chan int |
| 14 | |
| 15 | func external() int // ok |
| 16 | |
| 17 | func _() int { |
| 18 | } |
| 19 | |
| 20 | func _() int { |
| 21 | print(1) |
| 22 | } |
| 23 | |
| 24 | func _() int { |
| 25 | print(1) |
| 26 | return 2 |
| 27 | // want "unreachable code" |
| 28 | } |
| 29 | |
| 30 | func _() int { |
| 31 | L: |
| 32 | print(1) |
| 33 | goto L |
| 34 | // want "unreachable code" |
| 35 | } |
| 36 | |
| 37 | func _() int { |
| 38 | print(1) |
| 39 | panic(2) |
| 40 | // want "unreachable code" |
| 41 | } |
| 42 | |
| 43 | // but only builtin panic |
| 44 | func _() int { |
| 45 | var panic = func(int) {} |
| 46 | print(1) |
| 47 | panic(2) |
| 48 | println() // ok |
| 49 | } |
| 50 | |
| 51 | func _() int { |
| 52 | { |
| 53 | print(1) |
| 54 | return 2 |
| 55 | // want "unreachable code" |
| 56 | } |
| 57 | println() // ok |
| 58 | } |
| 59 | |
| 60 | func _() int { |
| 61 | { |
| 62 | print(1) |
| 63 | return 2 |
| 64 | } |
| 65 | // want "unreachable code" |
| 66 | } |
| 67 | |
| 68 | func _() int { |
| 69 | L: |
| 70 | { |
| 71 | print(1) |
| 72 | goto L |
| 73 | // want "unreachable code" |
| 74 | } |
| 75 | println() // ok |
| 76 | } |
| 77 | |
| 78 | func _() int { |
| 79 | L: |
| 80 | { |
| 81 | print(1) |
| 82 | goto L |
| 83 | } |
| 84 | // want "unreachable code" |
| 85 | } |
| 86 | |
| 87 | func _() int { |
| 88 | print(1) |
| 89 | { |
| 90 | panic(2) |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | func _() int { |
| 95 | print(1) |
| 96 | { |
| 97 | panic(2) |
| 98 | // want "unreachable code" |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | func _() int { |
| 103 | print(1) |
| 104 | { |
| 105 | panic(2) |
| 106 | } |
| 107 | // want "unreachable code" |
| 108 | } |
| 109 | |
| 110 | func _() int { |
| 111 | print(1) |
| 112 | return 2 |
| 113 | |
| 114 | } |
| 115 | |
| 116 | func _() int { |
| 117 | L: |
| 118 | print(1) |
| 119 | goto L |
| 120 | |
| 121 | } |
| 122 | |
| 123 | func _() int { |
| 124 | print(1) |
| 125 | panic(2) |
| 126 | |
| 127 | } |
| 128 | |
| 129 | func _() int { |
| 130 | { |
| 131 | print(1) |
| 132 | return 2 |
| 133 | |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | func _() int { |
| 138 | L: |
| 139 | { |
| 140 | print(1) |
| 141 | goto L |
| 142 | |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | func _() int { |
| 147 | print(1) |
| 148 | { |
| 149 | panic(2) |
| 150 | |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | func _() int { |
| 155 | { |
| 156 | print(1) |
| 157 | return 2 |
| 158 | } |
| 159 | |
| 160 | } |
| 161 | |
| 162 | func _() int { |
| 163 | L: |
| 164 | { |
| 165 | print(1) |
| 166 | goto L |
| 167 | } |
| 168 | |
| 169 | } |
| 170 | |
| 171 | func _() int { |
| 172 | print(1) |
| 173 | { |
| 174 | panic(2) |
| 175 | } |
| 176 | |
| 177 | } |
| 178 | |
| 179 | func _() int { |
| 180 | print(1) |
| 181 | if x == nil { |
| 182 | panic(2) |
| 183 | } else { |
| 184 | panic(3) |
| 185 | } |
| 186 | // want "unreachable code" |
| 187 | } |
| 188 | |
| 189 | func _() int { |
| 190 | L: |
| 191 | print(1) |
| 192 | if x == nil { |
| 193 | panic(2) |
| 194 | } else { |
| 195 | goto L |
| 196 | } |
| 197 | // want "unreachable code" |
| 198 | } |
| 199 | |
| 200 | func _() int { |
| 201 | L: |
| 202 | print(1) |
| 203 | if x == nil { |
| 204 | panic(2) |
| 205 | } else if x == 1 { |
| 206 | return 0 |
| 207 | } else if x != 2 { |
| 208 | panic(3) |
| 209 | } else { |
| 210 | goto L |
| 211 | } |
| 212 | // want "unreachable code" |
| 213 | } |
| 214 | |
| 215 | // if-else chain missing final else is not okay, even if the |
| 216 | // conditions cover every possible case. |
| 217 | |
| 218 | func _() int { |
| 219 | print(1) |
| 220 | if x == nil { |
| 221 | panic(2) |
| 222 | } else if x != nil { |
| 223 | panic(3) |
| 224 | } |
| 225 | println() // ok |
| 226 | } |
| 227 | |
| 228 | func _() int { |
| 229 | print(1) |
| 230 | if x == nil { |
| 231 | panic(2) |
| 232 | } |
| 233 | println() // ok |
| 234 | } |
| 235 | |
| 236 | func _() int { |
| 237 | L: |
| 238 | print(1) |
| 239 | if x == nil { |
| 240 | panic(2) |
| 241 | } else if x == 1 { |
| 242 | return 0 |
| 243 | } else if x != 1 { |
| 244 | panic(3) |
| 245 | } |
| 246 | println() // ok |
| 247 | } |
| 248 | |
| 249 | func _() int { |
| 250 | print(1) |
| 251 | for { |
| 252 | } |
| 253 | // want "unreachable code" |
| 254 | } |
| 255 | |
| 256 | func _() int { |
| 257 | for { |
| 258 | for { |
| 259 | break |
| 260 | } |
| 261 | } |
| 262 | // want "unreachable code" |
| 263 | } |
| 264 | |
| 265 | func _() int { |
| 266 | for { |
| 267 | for { |
| 268 | break |
| 269 | // want "unreachable code" |
| 270 | } |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | func _() int { |
| 275 | for { |
| 276 | for { |
| 277 | continue |
| 278 | // want "unreachable code" |
| 279 | } |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | func _() int { |
| 284 | for { |
| 285 | L: |
| 286 | for { |
| 287 | break L |
| 288 | } |
| 289 | } |
| 290 | // want "unreachable code" |
| 291 | } |
| 292 | |
| 293 | func _() int { |
| 294 | print(1) |
| 295 | for { |
| 296 | break |
| 297 | } |
| 298 | println() // ok |
| 299 | } |
| 300 | |
| 301 | func _() int { |
| 302 | for { |
| 303 | for { |
| 304 | } |
| 305 | // want "unreachable code" |
| 306 | } |
| 307 | println() // ok |
| 308 | } |
| 309 | |
| 310 | func _() int { |
| 311 | L: |
| 312 | for { |
| 313 | for { |
| 314 | break L |
| 315 | } |
| 316 | } |
| 317 | println() // ok |
| 318 | } |
| 319 | |
| 320 | func _() int { |
| 321 | print(1) |
| 322 | for x == nil { |
| 323 | } |
| 324 | println() // ok |
| 325 | } |
| 326 | |
| 327 | func _() int { |
| 328 | for x == nil { |
| 329 | for { |
| 330 | break |
| 331 | } |
| 332 | } |
| 333 | println() // ok |
| 334 | } |
| 335 | |
| 336 | func _() int { |
| 337 | for x == nil { |
| 338 | L: |
| 339 | for { |
| 340 | break L |
| 341 | } |
| 342 | } |
| 343 | println() // ok |
| 344 | } |
| 345 | |
| 346 | func _() int { |
| 347 | print(1) |
| 348 | for true { |
| 349 | } |
| 350 | println() // ok |
| 351 | } |
| 352 | |
| 353 | func _() int { |
| 354 | for true { |
| 355 | for { |
| 356 | break |
| 357 | } |
| 358 | } |
| 359 | println() // ok |
| 360 | } |
| 361 | |
| 362 | func _() int { |
| 363 | for true { |
| 364 | L: |
| 365 | for { |
| 366 | break L |
| 367 | } |
| 368 | } |
| 369 | println() // ok |
| 370 | } |
| 371 | |
| 372 | func _() int { |
| 373 | print(1) |
| 374 | select {} |
| 375 | // want "unreachable code" |
| 376 | } |
| 377 | |
| 378 | func _() int { |
| 379 | print(1) |
| 380 | select { |
| 381 | case <-c: |
| 382 | print(2) |
| 383 | panic("abc") |
| 384 | // want "unreachable code" |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | func _() int { |
| 389 | print(1) |
| 390 | select { |
| 391 | case <-c: |
| 392 | print(2) |
| 393 | panic("abc") |
| 394 | } |
| 395 | // want "unreachable code" |
| 396 | } |
| 397 | |
| 398 | func _() int { |
| 399 | print(1) |
| 400 | select { |
| 401 | case <-c: |
| 402 | print(2) |
| 403 | for { |
| 404 | } |
| 405 | // want "unreachable code" |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | func _() int { |
| 410 | print(1) |
| 411 | select { |
| 412 | case <-c: |
| 413 | print(2) |
| 414 | for { |
| 415 | } |
| 416 | } |
| 417 | // want "unreachable code" |
| 418 | } |
| 419 | |
| 420 | func _() int { |
| 421 | L: |
| 422 | print(1) |
| 423 | select { |
| 424 | case <-c: |
| 425 | print(2) |
| 426 | panic("abc") |
| 427 | // want "unreachable code" |
| 428 | case c <- 1: |
| 429 | print(2) |
| 430 | goto L |
| 431 | // want "unreachable code" |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | func _() int { |
| 436 | L: |
| 437 | print(1) |
| 438 | select { |
| 439 | case <-c: |
| 440 | print(2) |
| 441 | panic("abc") |
| 442 | case c <- 1: |
| 443 | print(2) |
| 444 | goto L |
| 445 | } |
| 446 | // want "unreachable code" |
| 447 | } |
| 448 | |
| 449 | func _() int { |
| 450 | print(1) |
| 451 | select { |
| 452 | case <-c: |
| 453 | print(2) |
| 454 | panic("abc") |
| 455 | // want "unreachable code" |
| 456 | default: |
| 457 | select {} |
| 458 | // want "unreachable code" |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | func _() int { |
| 463 | print(1) |
| 464 | select { |
| 465 | case <-c: |
| 466 | print(2) |
| 467 | panic("abc") |
| 468 | default: |
| 469 | select {} |
| 470 | } |
| 471 | // want "unreachable code" |
| 472 | } |
| 473 | |
| 474 | func _() int { |
| 475 | print(1) |
| 476 | select { |
| 477 | case <-c: |
| 478 | print(2) |
| 479 | } |
| 480 | println() // ok |
| 481 | } |
| 482 | |
| 483 | func _() int { |
| 484 | L: |
| 485 | print(1) |
| 486 | select { |
| 487 | case <-c: |
| 488 | print(2) |
| 489 | panic("abc") |
| 490 | // want "unreachable code" |
| 491 | case c <- 1: |
| 492 | print(2) |
| 493 | } |
| 494 | println() // ok |
| 495 | } |
| 496 | |
| 497 | func _() int { |
| 498 | print(1) |
| 499 | select { |
| 500 | case <-c: |
| 501 | print(2) |
| 502 | panic("abc") |
| 503 | default: |
| 504 | print(2) |
| 505 | } |
| 506 | println() // ok |
| 507 | } |
| 508 | |
| 509 | func _() int { |
| 510 | print(1) |
| 511 | select { |
| 512 | default: |
| 513 | break |
| 514 | } |
| 515 | println() // ok |
| 516 | } |
| 517 | |
| 518 | func _() int { |
| 519 | print(1) |
| 520 | select { |
| 521 | case <-c: |
| 522 | print(2) |
| 523 | panic("abc") |
| 524 | // want "unreachable code" |
| 525 | } |
| 526 | println() // ok |
| 527 | } |
| 528 | |
| 529 | func _() int { |
| 530 | print(1) |
| 531 | L: |
| 532 | select { |
| 533 | case <-c: |
| 534 | print(2) |
| 535 | for { |
| 536 | break L |
| 537 | } |
| 538 | } |
| 539 | println() // ok |
| 540 | } |
| 541 | |
| 542 | func _() int { |
| 543 | print(1) |
| 544 | L: |
| 545 | select { |
| 546 | case <-c: |
| 547 | print(2) |
| 548 | panic("abc") |
| 549 | case c <- 1: |
| 550 | print(2) |
| 551 | break L |
| 552 | } |
| 553 | println() // ok |
| 554 | } |
| 555 | |
| 556 | func _() int { |
| 557 | print(1) |
| 558 | select { |
| 559 | case <-c: |
| 560 | print(1) |
| 561 | panic("abc") |
| 562 | default: |
| 563 | select {} |
| 564 | // want "unreachable code" |
| 565 | } |
| 566 | println() // ok |
| 567 | } |
| 568 | |
| 569 | func _() int { |
| 570 | print(1) |
| 571 | switch x { |
| 572 | case 1: |
| 573 | print(2) |
| 574 | panic(3) |
| 575 | // want "unreachable code" |
| 576 | default: |
| 577 | return 4 |
| 578 | // want "unreachable code" |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | func _() int { |
| 583 | print(1) |
| 584 | switch x { |
| 585 | case 1: |
| 586 | print(2) |
| 587 | panic(3) |
| 588 | default: |
| 589 | return 4 |
| 590 | } |
| 591 | // want "unreachable code" |
| 592 | } |
| 593 | |
| 594 | func _() int { |
| 595 | print(1) |
| 596 | switch x { |
| 597 | default: |
| 598 | return 4 |
| 599 | // want "unreachable code" |
| 600 | case 1: |
| 601 | print(2) |
| 602 | panic(3) |
| 603 | // want "unreachable code" |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | func _() int { |
| 608 | print(1) |
| 609 | switch x { |
| 610 | default: |
| 611 | return 4 |
| 612 | case 1: |
| 613 | print(2) |
| 614 | panic(3) |
| 615 | } |
| 616 | // want "unreachable code" |
| 617 | } |
| 618 | |
| 619 | func _() int { |
| 620 | print(1) |
| 621 | switch x { |
| 622 | case 1: |
| 623 | print(2) |
| 624 | fallthrough |
| 625 | default: |
| 626 | return 4 |
| 627 | // want "unreachable code" |
| 628 | } |
| 629 | } |
| 630 | |
| 631 | func _() int { |
| 632 | print(1) |
| 633 | switch x { |
| 634 | case 1: |
| 635 | print(2) |
| 636 | fallthrough |
| 637 | default: |
| 638 | return 4 |
| 639 | } |
| 640 | // want "unreachable code" |
| 641 | } |
| 642 | |
| 643 | func _() int { |
| 644 | print(1) |
| 645 | switch { |
| 646 | } |
| 647 | println() // ok |
| 648 | } |
| 649 | |
| 650 | func _() int { |
| 651 | print(1) |
| 652 | switch x { |
| 653 | case 1: |
| 654 | print(2) |
| 655 | panic(3) |
| 656 | case 2: |
| 657 | return 4 |
| 658 | } |
| 659 | println() // ok |
| 660 | } |
| 661 | |
| 662 | func _() int { |
| 663 | print(1) |
| 664 | switch x { |
| 665 | case 2: |
| 666 | return 4 |
| 667 | case 1: |
| 668 | print(2) |
| 669 | panic(3) |
| 670 | } |
| 671 | println() // ok |
| 672 | } |
| 673 | |
| 674 | func _() int { |
| 675 | print(1) |
| 676 | switch x { |
| 677 | case 1: |
| 678 | print(2) |
| 679 | fallthrough |
| 680 | case 2: |
| 681 | return 4 |
| 682 | } |
| 683 | println() // ok |
| 684 | } |
| 685 | |
| 686 | func _() int { |
| 687 | print(1) |
| 688 | switch x { |
| 689 | case 1: |
| 690 | print(2) |
| 691 | panic(3) |
| 692 | } |
| 693 | println() // ok |
| 694 | } |
| 695 | |
| 696 | func _() int { |
| 697 | print(1) |
| 698 | L: |
| 699 | switch x { |
| 700 | case 1: |
| 701 | print(2) |
| 702 | panic(3) |
| 703 | // want "unreachable code" |
| 704 | default: |
| 705 | return 4 |
| 706 | } |
| 707 | println() // ok |
| 708 | } |
| 709 | |
| 710 | func _() int { |
| 711 | print(1) |
| 712 | switch x { |
| 713 | default: |
| 714 | return 4 |
| 715 | // want "unreachable code" |
| 716 | case 1: |
| 717 | print(2) |
| 718 | panic(3) |
| 719 | } |
| 720 | println() // ok |
| 721 | } |
| 722 | |
| 723 | func _() int { |
| 724 | print(1) |
| 725 | L: |
| 726 | switch x { |
| 727 | case 1: |
| 728 | print(2) |
| 729 | for { |
| 730 | break L |
| 731 | } |
| 732 | default: |
| 733 | return 4 |
| 734 | } |
| 735 | println() // ok |
| 736 | } |
| 737 | |
| 738 | func _() int { |
| 739 | print(1) |
| 740 | switch x.(type) { |
| 741 | case int: |
| 742 | print(2) |
| 743 | panic(3) |
| 744 | // want "unreachable code" |
| 745 | default: |
| 746 | return 4 |
| 747 | // want "unreachable code" |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | func _() int { |
| 752 | print(1) |
| 753 | switch x.(type) { |
| 754 | case int: |
| 755 | print(2) |
| 756 | panic(3) |
| 757 | default: |
| 758 | return 4 |
| 759 | } |
| 760 | // want "unreachable code" |
| 761 | } |
| 762 | |
| 763 | func _() int { |
| 764 | print(1) |
| 765 | switch x.(type) { |
| 766 | default: |
| 767 | return 4 |
| 768 | // want "unreachable code" |
| 769 | case int: |
| 770 | print(2) |
| 771 | panic(3) |
| 772 | // want "unreachable code" |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | func _() int { |
| 777 | print(1) |
| 778 | switch x.(type) { |
| 779 | default: |
| 780 | return 4 |
| 781 | case int: |
| 782 | print(2) |
| 783 | panic(3) |
| 784 | } |
| 785 | // want "unreachable code" |
| 786 | } |
| 787 | |
| 788 | func _() int { |
| 789 | print(1) |
| 790 | switch x.(type) { |
| 791 | case int: |
| 792 | print(2) |
| 793 | fallthrough |
| 794 | default: |
| 795 | return 4 |
| 796 | // want "unreachable code" |
| 797 | } |
| 798 | } |
| 799 | |
| 800 | func _() int { |
| 801 | print(1) |
| 802 | switch x.(type) { |
| 803 | case int: |
| 804 | print(2) |
| 805 | fallthrough |
| 806 | default: |
| 807 | return 4 |
| 808 | } |
| 809 | // want "unreachable code" |
| 810 | } |
| 811 | |
| 812 | func _() int { |
| 813 | print(1) |
| 814 | switch { |
| 815 | } |
| 816 | println() // ok |
| 817 | } |
| 818 | |
| 819 | func _() int { |
| 820 | print(1) |
| 821 | switch x.(type) { |
| 822 | case int: |
| 823 | print(2) |
| 824 | panic(3) |
| 825 | case float64: |
| 826 | return 4 |
| 827 | } |
| 828 | println() // ok |
| 829 | } |
| 830 | |
| 831 | func _() int { |
| 832 | print(1) |
| 833 | switch x.(type) { |
| 834 | case float64: |
| 835 | return 4 |
| 836 | case int: |
| 837 | print(2) |
| 838 | panic(3) |
| 839 | } |
| 840 | println() // ok |
| 841 | } |
| 842 | |
| 843 | func _() int { |
| 844 | print(1) |
| 845 | switch x.(type) { |
| 846 | case int: |
| 847 | print(2) |
| 848 | fallthrough |
| 849 | case float64: |
| 850 | return 4 |
| 851 | } |
| 852 | println() // ok |
| 853 | } |
| 854 | |
| 855 | func _() int { |
| 856 | print(1) |
| 857 | switch x.(type) { |
| 858 | case int: |
| 859 | print(2) |
| 860 | panic(3) |
| 861 | } |
| 862 | println() // ok |
| 863 | } |
| 864 | |
| 865 | func _() int { |
| 866 | print(1) |
| 867 | L: |
| 868 | switch x.(type) { |
| 869 | case int: |
| 870 | print(2) |
| 871 | panic(3) |
| 872 | // want "unreachable code" |
| 873 | default: |
| 874 | return 4 |
| 875 | } |
| 876 | println() // ok |
| 877 | } |
| 878 | |
| 879 | func _() int { |
| 880 | print(1) |
| 881 | switch x.(type) { |
| 882 | default: |
| 883 | return 4 |
| 884 | // want "unreachable code" |
| 885 | case int: |
| 886 | print(2) |
| 887 | panic(3) |
| 888 | } |
| 889 | println() // ok |
| 890 | } |
| 891 | |
| 892 | func _() int { |
| 893 | print(1) |
| 894 | L: |
| 895 | switch x.(type) { |
| 896 | case int: |
| 897 | print(2) |
| 898 | for { |
| 899 | break L |
| 900 | } |
| 901 | default: |
| 902 | return 4 |
| 903 | } |
| 904 | println() // ok |
| 905 | } |
| 906 | |
| 907 | // again, but without the leading print(1). |
| 908 | // testing that everything works when the terminating statement is first. |
| 909 | |
| 910 | func _() int { |
| 911 | println() // ok |
| 912 | } |
| 913 | |
| 914 | func _() int { |
| 915 | return 2 |
| 916 | // want "unreachable code" |
| 917 | } |
| 918 | |
| 919 | func _() int { |
| 920 | L: |
| 921 | goto L |
| 922 | // want "unreachable code" |
| 923 | } |
| 924 | |
| 925 | func _() int { |
| 926 | panic(2) |
| 927 | // want "unreachable code" |
| 928 | } |
| 929 | |
| 930 | // but only builtin panic |
| 931 | func _() int { |
| 932 | var panic = func(int) {} |
| 933 | panic(2) |
| 934 | println() // ok |
| 935 | } |
| 936 | |
| 937 | func _() int { |
| 938 | { |
| 939 | return 2 |
| 940 | // want "unreachable code" |
| 941 | } |
| 942 | } |
| 943 | |
| 944 | func _() int { |
| 945 | { |
| 946 | return 2 |
| 947 | } |
| 948 | // want "unreachable code" |
| 949 | } |
| 950 | |
| 951 | func _() int { |
| 952 | L: |
| 953 | { |
| 954 | goto L |
| 955 | // want "unreachable code" |
| 956 | } |
| 957 | } |
| 958 | |
| 959 | func _() int { |
| 960 | L: |
| 961 | { |
| 962 | goto L |
| 963 | } |
| 964 | // want "unreachable code" |
| 965 | } |
| 966 | |
| 967 | func _() int { |
| 968 | { |
| 969 | panic(2) |
| 970 | // want "unreachable code" |
| 971 | } |
| 972 | } |
| 973 | |
| 974 | func _() int { |
| 975 | { |
| 976 | panic(2) |
| 977 | } |
| 978 | // want "unreachable code" |
| 979 | } |
| 980 | |
| 981 | func _() int { |
| 982 | return 2 |
| 983 | |
| 984 | println() // ok |
| 985 | } |
| 986 | |
| 987 | func _() int { |
| 988 | L: |
| 989 | goto L |
| 990 | |
| 991 | println() // ok |
| 992 | } |
| 993 | |
| 994 | func _() int { |
| 995 | panic(2) |
| 996 | |
| 997 | println() // ok |
| 998 | } |
| 999 | |
| 1000 | func _() int { |
| 1001 | { |
| 1002 | return 2 |
| 1003 | |
| 1004 | } |
| 1005 | println() // ok |
| 1006 | } |
| 1007 | |
| 1008 | func _() int { |
| 1009 | L: |
| 1010 | { |
| 1011 | goto L |
| 1012 | |
| 1013 | } |
| 1014 | println() // ok |
| 1015 | } |
| 1016 | |
| 1017 | func _() int { |
| 1018 | { |
| 1019 | panic(2) |
| 1020 | |
| 1021 | } |
| 1022 | println() // ok |
| 1023 | } |
| 1024 | |
| 1025 | func _() int { |
| 1026 | { |
| 1027 | return 2 |
| 1028 | } |
| 1029 | |
| 1030 | println() // ok |
| 1031 | } |
| 1032 | |
| 1033 | func _() int { |
| 1034 | L: |
| 1035 | { |
| 1036 | goto L |
| 1037 | } |
| 1038 | |
| 1039 | println() // ok |
| 1040 | } |
| 1041 | |
| 1042 | func _() int { |
| 1043 | { |
| 1044 | panic(2) |
| 1045 | } |
| 1046 | |
| 1047 | println() // ok |
| 1048 | } |
| 1049 | |
| 1050 | // again, with func literals |
| 1051 | |
| 1052 | var _ = func() int { |
| 1053 | } |
| 1054 | |
| 1055 | var _ = func() int { |
| 1056 | print(1) |
| 1057 | } |
| 1058 | |
| 1059 | var _ = func() int { |
| 1060 | print(1) |
| 1061 | return 2 |
| 1062 | // want "unreachable code" |
| 1063 | } |
| 1064 | |
| 1065 | var _ = func() int { |
| 1066 | L: |
| 1067 | print(1) |
| 1068 | goto L |
| 1069 | // want "unreachable code" |
| 1070 | } |
| 1071 | |
| 1072 | var _ = func() int { |
| 1073 | print(1) |
| 1074 | panic(2) |
| 1075 | // want "unreachable code" |
| 1076 | } |
| 1077 | |
| 1078 | // but only builtin panic |
| 1079 | var _ = func() int { |
| 1080 | var panic = func(int) {} |
| 1081 | print(1) |
| 1082 | panic(2) |
| 1083 | println() // ok |
| 1084 | } |
| 1085 | |
| 1086 | var _ = func() int { |
| 1087 | { |
| 1088 | print(1) |
| 1089 | return 2 |
| 1090 | // want "unreachable code" |
| 1091 | } |
| 1092 | println() // ok |
| 1093 | } |
| 1094 | |
| 1095 | var _ = func() int { |
| 1096 | { |
| 1097 | print(1) |
| 1098 | return 2 |
| 1099 | } |
| 1100 | // want "unreachable code" |
| 1101 | } |
| 1102 | |
| 1103 | var _ = func() int { |
| 1104 | L: |
| 1105 | { |
| 1106 | print(1) |
| 1107 | goto L |
| 1108 | // want "unreachable code" |
| 1109 | } |
| 1110 | println() // ok |
| 1111 | } |
| 1112 | |
| 1113 | var _ = func() int { |
| 1114 | L: |
| 1115 | { |
| 1116 | print(1) |
| 1117 | goto L |
| 1118 | } |
| 1119 | // want "unreachable code" |
| 1120 | } |
| 1121 | |
| 1122 | var _ = func() int { |
| 1123 | print(1) |
| 1124 | { |
| 1125 | panic(2) |
| 1126 | } |
| 1127 | } |
| 1128 | |
| 1129 | var _ = func() int { |
| 1130 | print(1) |
| 1131 | { |
| 1132 | panic(2) |
| 1133 | // want "unreachable code" |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | var _ = func() int { |
| 1138 | print(1) |
| 1139 | { |
| 1140 | panic(2) |
| 1141 | } |
| 1142 | // want "unreachable code" |
| 1143 | } |
| 1144 | |
| 1145 | var _ = func() int { |
| 1146 | print(1) |
| 1147 | return 2 |
| 1148 | |
| 1149 | } |
| 1150 | |
| 1151 | var _ = func() int { |
| 1152 | L: |
| 1153 | print(1) |
| 1154 | goto L |
| 1155 | |
| 1156 | } |
| 1157 | |
| 1158 | var _ = func() int { |
| 1159 | print(1) |
| 1160 | panic(2) |
| 1161 | |
| 1162 | } |
| 1163 | |
| 1164 | var _ = func() int { |
| 1165 | { |
| 1166 | print(1) |
| 1167 | return 2 |
| 1168 | |
| 1169 | } |
| 1170 | } |
| 1171 | |
| 1172 | var _ = func() int { |
| 1173 | L: |
| 1174 | { |
| 1175 | print(1) |
| 1176 | goto L |
| 1177 | |
| 1178 | } |
| 1179 | } |
| 1180 | |
| 1181 | var _ = func() int { |
| 1182 | print(1) |
| 1183 | { |
| 1184 | panic(2) |
| 1185 | |
| 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | var _ = func() int { |
| 1190 | { |
| 1191 | print(1) |
| 1192 | return 2 |
| 1193 | } |
| 1194 | |
| 1195 | } |
| 1196 | |
| 1197 | var _ = func() int { |
| 1198 | L: |
| 1199 | { |
| 1200 | print(1) |
| 1201 | goto L |
| 1202 | } |
| 1203 | |
| 1204 | } |
| 1205 | |
| 1206 | var _ = func() int { |
| 1207 | print(1) |
| 1208 | { |
| 1209 | panic(2) |
| 1210 | } |
| 1211 | |
| 1212 | } |
| 1213 | |
| 1214 | var _ = func() int { |
| 1215 | print(1) |
| 1216 | if x == nil { |
| 1217 | panic(2) |
| 1218 | } else { |
| 1219 | panic(3) |
| 1220 | } |
| 1221 | // want "unreachable code" |
| 1222 | } |
| 1223 | |
| 1224 | var _ = func() int { |
| 1225 | L: |
| 1226 | print(1) |
| 1227 | if x == nil { |
| 1228 | panic(2) |
| 1229 | } else { |
| 1230 | goto L |
| 1231 | } |
| 1232 | // want "unreachable code" |
| 1233 | } |
| 1234 | |
| 1235 | var _ = func() int { |
| 1236 | L: |
| 1237 | print(1) |
| 1238 | if x == nil { |
| 1239 | panic(2) |
| 1240 | } else if x == 1 { |
| 1241 | return 0 |
| 1242 | } else if x != 2 { |
| 1243 | panic(3) |
| 1244 | } else { |
| 1245 | goto L |
| 1246 | } |
| 1247 | // want "unreachable code" |
| 1248 | } |
| 1249 | |
| 1250 | // if-else chain missing final else is not okay, even if the |
| 1251 | // conditions cover every possible case. |
| 1252 | |
| 1253 | var _ = func() int { |
| 1254 | print(1) |
| 1255 | if x == nil { |
| 1256 | panic(2) |
| 1257 | } else if x != nil { |
| 1258 | panic(3) |
| 1259 | } |
| 1260 | println() // ok |
| 1261 | } |
| 1262 | |
| 1263 | var _ = func() int { |
| 1264 | print(1) |
| 1265 | if x == nil { |
| 1266 | panic(2) |
| 1267 | } |
| 1268 | println() // ok |
| 1269 | } |
| 1270 | |
| 1271 | var _ = func() int { |
| 1272 | L: |
| 1273 | print(1) |
| 1274 | if x == nil { |
| 1275 | panic(2) |
| 1276 | } else if x == 1 { |
| 1277 | return 0 |
| 1278 | } else if x != 1 { |
| 1279 | panic(3) |
| 1280 | } |
| 1281 | println() // ok |
| 1282 | } |
| 1283 | |
| 1284 | var _ = func() int { |
| 1285 | print(1) |
| 1286 | for { |
| 1287 | } |
| 1288 | // want "unreachable code" |
| 1289 | } |
| 1290 | |
| 1291 | var _ = func() int { |
| 1292 | for { |
| 1293 | for { |
| 1294 | break |
| 1295 | } |
| 1296 | } |
| 1297 | // want "unreachable code" |
| 1298 | } |
| 1299 | |
| 1300 | var _ = func() int { |
| 1301 | for { |
| 1302 | for { |
| 1303 | break |
| 1304 | // want "unreachable code" |
| 1305 | } |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | var _ = func() int { |
| 1310 | for { |
| 1311 | for { |
| 1312 | continue |
| 1313 | // want "unreachable code" |
| 1314 | } |
| 1315 | } |
| 1316 | } |
| 1317 | |
| 1318 | var _ = func() int { |
| 1319 | for { |
| 1320 | L: |
| 1321 | for { |
| 1322 | break L |
| 1323 | } |
| 1324 | } |
| 1325 | // want "unreachable code" |
| 1326 | } |
| 1327 | |
| 1328 | var _ = func() int { |
| 1329 | print(1) |
| 1330 | for { |
| 1331 | break |
| 1332 | } |
| 1333 | println() // ok |
| 1334 | } |
| 1335 | |
| 1336 | var _ = func() int { |
| 1337 | for { |
| 1338 | for { |
| 1339 | } |
| 1340 | // want "unreachable code" |
| 1341 | } |
| 1342 | println() // ok |
| 1343 | } |
| 1344 | |
| 1345 | var _ = func() int { |
| 1346 | L: |
| 1347 | for { |
| 1348 | for { |
| 1349 | break L |
| 1350 | } |
| 1351 | } |
| 1352 | println() // ok |
| 1353 | } |
| 1354 | |
| 1355 | var _ = func() int { |
| 1356 | print(1) |
| 1357 | for x == nil { |
| 1358 | } |
| 1359 | println() // ok |
| 1360 | } |
| 1361 | |
| 1362 | var _ = func() int { |
| 1363 | for x == nil { |
| 1364 | for { |
| 1365 | break |
| 1366 | } |
| 1367 | } |
| 1368 | println() // ok |
| 1369 | } |
| 1370 | |
| 1371 | var _ = func() int { |
| 1372 | for x == nil { |
| 1373 | L: |
| 1374 | for { |
| 1375 | break L |
| 1376 | } |
| 1377 | } |
| 1378 | println() // ok |
| 1379 | } |
| 1380 | |
| 1381 | var _ = func() int { |
| 1382 | print(1) |
| 1383 | for true { |
| 1384 | } |
| 1385 | println() // ok |
| 1386 | } |
| 1387 | |
| 1388 | var _ = func() int { |
| 1389 | for true { |
| 1390 | for { |
| 1391 | break |
| 1392 | } |
| 1393 | } |
| 1394 | println() // ok |
| 1395 | } |
| 1396 | |
| 1397 | var _ = func() int { |
| 1398 | for true { |
| 1399 | L: |
| 1400 | for { |
| 1401 | break L |
| 1402 | } |
| 1403 | } |
| 1404 | println() // ok |
| 1405 | } |
| 1406 | |
| 1407 | var _ = func() int { |
| 1408 | print(1) |
| 1409 | select {} |
| 1410 | // want "unreachable code" |
| 1411 | } |
| 1412 | |
| 1413 | var _ = func() int { |
| 1414 | print(1) |
| 1415 | select { |
| 1416 | case <-c: |
| 1417 | print(2) |
| 1418 | panic("abc") |
| 1419 | // want "unreachable code" |
| 1420 | } |
| 1421 | } |
| 1422 | |
| 1423 | var _ = func() int { |
| 1424 | print(1) |
| 1425 | select { |
| 1426 | case <-c: |
| 1427 | print(2) |
| 1428 | panic("abc") |
| 1429 | } |
| 1430 | // want "unreachable code" |
| 1431 | } |
| 1432 | |
| 1433 | var _ = func() int { |
| 1434 | print(1) |
| 1435 | select { |
| 1436 | case <-c: |
| 1437 | print(2) |
| 1438 | for { |
| 1439 | } |
| 1440 | // want "unreachable code" |
| 1441 | } |
| 1442 | } |
| 1443 | |
| 1444 | var _ = func() int { |
| 1445 | print(1) |
| 1446 | select { |
| 1447 | case <-c: |
| 1448 | print(2) |
| 1449 | for { |
| 1450 | } |
| 1451 | } |
| 1452 | // want "unreachable code" |
| 1453 | } |
| 1454 | |
| 1455 | var _ = func() int { |
| 1456 | L: |
| 1457 | print(1) |
| 1458 | select { |
| 1459 | case <-c: |
| 1460 | print(2) |
| 1461 | panic("abc") |
| 1462 | // want "unreachable code" |
| 1463 | case c <- 1: |
| 1464 | print(2) |
| 1465 | goto L |
| 1466 | // want "unreachable code" |
| 1467 | } |
| 1468 | } |
| 1469 | |
| 1470 | var _ = func() int { |
| 1471 | L: |
| 1472 | print(1) |
| 1473 | select { |
| 1474 | case <-c: |
| 1475 | print(2) |
| 1476 | panic("abc") |
| 1477 | case c <- 1: |
| 1478 | print(2) |
| 1479 | goto L |
| 1480 | } |
| 1481 | // want "unreachable code" |
| 1482 | } |
| 1483 | |
| 1484 | var _ = func() int { |
| 1485 | print(1) |
| 1486 | select { |
| 1487 | case <-c: |
| 1488 | print(2) |
| 1489 | panic("abc") |
| 1490 | // want "unreachable code" |
| 1491 | default: |
| 1492 | select {} |
| 1493 | // want "unreachable code" |
| 1494 | } |
| 1495 | } |
| 1496 | |
| 1497 | var _ = func() int { |
| 1498 | print(1) |
| 1499 | select { |
| 1500 | case <-c: |
| 1501 | print(2) |
| 1502 | panic("abc") |
| 1503 | default: |
| 1504 | select {} |
| 1505 | } |
| 1506 | // want "unreachable code" |
| 1507 | } |
| 1508 | |
| 1509 | var _ = func() int { |
| 1510 | print(1) |
| 1511 | select { |
| 1512 | case <-c: |
| 1513 | print(2) |
| 1514 | } |
| 1515 | println() // ok |
| 1516 | } |
| 1517 | |
| 1518 | var _ = func() int { |
| 1519 | L: |
| 1520 | print(1) |
| 1521 | select { |
| 1522 | case <-c: |
| 1523 | print(2) |
| 1524 | panic("abc") |
| 1525 | // want "unreachable code" |
| 1526 | case c <- 1: |
| 1527 | print(2) |
| 1528 | } |
| 1529 | println() // ok |
| 1530 | } |
| 1531 | |
| 1532 | var _ = func() int { |
| 1533 | print(1) |
| 1534 | select { |
| 1535 | case <-c: |
| 1536 | print(2) |
| 1537 | panic("abc") |
| 1538 | default: |
| 1539 | print(2) |
| 1540 | } |
| 1541 | println() // ok |
| 1542 | } |
| 1543 | |
| 1544 | var _ = func() int { |
| 1545 | print(1) |
| 1546 | select { |
| 1547 | default: |
| 1548 | break |
| 1549 | } |
| 1550 | println() // ok |
| 1551 | } |
| 1552 | |
| 1553 | var _ = func() int { |
| 1554 | print(1) |
| 1555 | select { |
| 1556 | case <-c: |
| 1557 | print(2) |
| 1558 | panic("abc") |
| 1559 | // want "unreachable code" |
| 1560 | } |
| 1561 | println() // ok |
| 1562 | } |
| 1563 | |
| 1564 | var _ = func() int { |
| 1565 | print(1) |
| 1566 | L: |
| 1567 | select { |
| 1568 | case <-c: |
| 1569 | print(2) |
| 1570 | for { |
| 1571 | break L |
| 1572 | } |
| 1573 | } |
| 1574 | println() // ok |
| 1575 | } |
| 1576 | |
| 1577 | var _ = func() int { |
| 1578 | print(1) |
| 1579 | L: |
| 1580 | select { |
| 1581 | case <-c: |
| 1582 | print(2) |
| 1583 | panic("abc") |
| 1584 | case c <- 1: |
| 1585 | print(2) |
| 1586 | break L |
| 1587 | } |
| 1588 | println() // ok |
| 1589 | } |
| 1590 | |
| 1591 | var _ = func() int { |
| 1592 | print(1) |
| 1593 | select { |
| 1594 | case <-c: |
| 1595 | print(1) |
| 1596 | panic("abc") |
| 1597 | default: |
| 1598 | select {} |
| 1599 | // want "unreachable code" |
| 1600 | } |
| 1601 | println() // ok |
| 1602 | } |
| 1603 | |
| 1604 | var _ = func() int { |
| 1605 | print(1) |
| 1606 | switch x { |
| 1607 | case 1: |
| 1608 | print(2) |
| 1609 | panic(3) |
| 1610 | // want "unreachable code" |
| 1611 | default: |
| 1612 | return 4 |
| 1613 | // want "unreachable code" |
| 1614 | } |
| 1615 | } |
| 1616 | |
| 1617 | var _ = func() int { |
| 1618 | print(1) |
| 1619 | switch x { |
| 1620 | case 1: |
| 1621 | print(2) |
| 1622 | panic(3) |
| 1623 | default: |
| 1624 | return 4 |
| 1625 | } |
| 1626 | // want "unreachable code" |
| 1627 | } |
| 1628 | |
| 1629 | var _ = func() int { |
| 1630 | print(1) |
| 1631 | switch x { |
| 1632 | default: |
| 1633 | return 4 |
| 1634 | // want "unreachable code" |
| 1635 | case 1: |
| 1636 | print(2) |
| 1637 | panic(3) |
| 1638 | // want "unreachable code" |
| 1639 | } |
| 1640 | } |
| 1641 | |
| 1642 | var _ = func() int { |
| 1643 | print(1) |
| 1644 | switch x { |
| 1645 | default: |
| 1646 | return 4 |
| 1647 | case 1: |
| 1648 | print(2) |
| 1649 | panic(3) |
| 1650 | } |
| 1651 | // want "unreachable code" |
| 1652 | } |
| 1653 | |
| 1654 | var _ = func() int { |
| 1655 | print(1) |
| 1656 | switch x { |
| 1657 | case 1: |
| 1658 | print(2) |
| 1659 | fallthrough |
| 1660 | default: |
| 1661 | return 4 |
| 1662 | // want "unreachable code" |
| 1663 | } |
| 1664 | } |
| 1665 | |
| 1666 | var _ = func() int { |
| 1667 | print(1) |
| 1668 | switch x { |
| 1669 | case 1: |
| 1670 | print(2) |
| 1671 | fallthrough |
| 1672 | default: |
| 1673 | return 4 |
| 1674 | } |
| 1675 | // want "unreachable code" |
| 1676 | } |
| 1677 | |
| 1678 | var _ = func() int { |
| 1679 | print(1) |
| 1680 | switch { |
| 1681 | } |
| 1682 | println() // ok |
| 1683 | } |
| 1684 | |
| 1685 | var _ = func() int { |
| 1686 | print(1) |
| 1687 | switch x { |
| 1688 | case 1: |
| 1689 | print(2) |
| 1690 | panic(3) |
| 1691 | case 2: |
| 1692 | return 4 |
| 1693 | } |
| 1694 | println() // ok |
| 1695 | } |
| 1696 | |
| 1697 | var _ = func() int { |
| 1698 | print(1) |
| 1699 | switch x { |
| 1700 | case 2: |
| 1701 | return 4 |
| 1702 | case 1: |
| 1703 | print(2) |
| 1704 | panic(3) |
| 1705 | } |
| 1706 | println() // ok |
| 1707 | } |
| 1708 | |
| 1709 | var _ = func() int { |
| 1710 | print(1) |
| 1711 | switch x { |
| 1712 | case 1: |
| 1713 | print(2) |
| 1714 | fallthrough |
| 1715 | case 2: |
| 1716 | return 4 |
| 1717 | } |
| 1718 | println() // ok |
| 1719 | } |
| 1720 | |
| 1721 | var _ = func() int { |
| 1722 | print(1) |
| 1723 | switch x { |
| 1724 | case 1: |
| 1725 | print(2) |
| 1726 | panic(3) |
| 1727 | } |
| 1728 | println() // ok |
| 1729 | } |
| 1730 | |
| 1731 | var _ = func() int { |
| 1732 | print(1) |
| 1733 | L: |
| 1734 | switch x { |
| 1735 | case 1: |
| 1736 | print(2) |
| 1737 | panic(3) |
| 1738 | // want "unreachable code" |
| 1739 | default: |
| 1740 | return 4 |
| 1741 | } |
| 1742 | println() // ok |
| 1743 | } |
| 1744 | |
| 1745 | var _ = func() int { |
| 1746 | print(1) |
| 1747 | switch x { |
| 1748 | default: |
| 1749 | return 4 |
| 1750 | // want "unreachable code" |
| 1751 | case 1: |
| 1752 | print(2) |
| 1753 | panic(3) |
| 1754 | } |
| 1755 | println() // ok |
| 1756 | } |
| 1757 | |
| 1758 | var _ = func() int { |
| 1759 | print(1) |
| 1760 | L: |
| 1761 | switch x { |
| 1762 | case 1: |
| 1763 | print(2) |
| 1764 | for { |
| 1765 | break L |
| 1766 | } |
| 1767 | default: |
| 1768 | return 4 |
| 1769 | } |
| 1770 | println() // ok |
| 1771 | } |
| 1772 | |
| 1773 | var _ = func() int { |
| 1774 | print(1) |
| 1775 | switch x.(type) { |
| 1776 | case int: |
| 1777 | print(2) |
| 1778 | panic(3) |
| 1779 | // want "unreachable code" |
| 1780 | default: |
| 1781 | return 4 |
| 1782 | // want "unreachable code" |
| 1783 | } |
| 1784 | } |
| 1785 | |
| 1786 | var _ = func() int { |
| 1787 | print(1) |
| 1788 | switch x.(type) { |
| 1789 | case int: |
| 1790 | print(2) |
| 1791 | panic(3) |
| 1792 | default: |
| 1793 | return 4 |
| 1794 | } |
| 1795 | // want "unreachable code" |
| 1796 | } |
| 1797 | |
| 1798 | var _ = func() int { |
| 1799 | print(1) |
| 1800 | switch x.(type) { |
| 1801 | default: |
| 1802 | return 4 |
| 1803 | // want "unreachable code" |
| 1804 | case int: |
| 1805 | print(2) |
| 1806 | panic(3) |
| 1807 | // want "unreachable code" |
| 1808 | } |
| 1809 | } |
| 1810 | |
| 1811 | var _ = func() int { |
| 1812 | print(1) |
| 1813 | switch x.(type) { |
| 1814 | default: |
| 1815 | return 4 |
| 1816 | case int: |
| 1817 | print(2) |
| 1818 | panic(3) |
| 1819 | } |
| 1820 | // want "unreachable code" |
| 1821 | } |
| 1822 | |
| 1823 | var _ = func() int { |
| 1824 | print(1) |
| 1825 | switch x.(type) { |
| 1826 | case int: |
| 1827 | print(2) |
| 1828 | fallthrough |
| 1829 | default: |
| 1830 | return 4 |
| 1831 | // want "unreachable code" |
| 1832 | } |
| 1833 | } |
| 1834 | |
| 1835 | var _ = func() int { |
| 1836 | print(1) |
| 1837 | switch x.(type) { |
| 1838 | case int: |
| 1839 | print(2) |
| 1840 | fallthrough |
| 1841 | default: |
| 1842 | return 4 |
| 1843 | } |
| 1844 | // want "unreachable code" |
| 1845 | } |
| 1846 | |
| 1847 | var _ = func() int { |
| 1848 | print(1) |
| 1849 | switch { |
| 1850 | } |
| 1851 | println() // ok |
| 1852 | } |
| 1853 | |
| 1854 | var _ = func() int { |
| 1855 | print(1) |
| 1856 | switch x.(type) { |
| 1857 | case int: |
| 1858 | print(2) |
| 1859 | panic(3) |
| 1860 | case float64: |
| 1861 | return 4 |
| 1862 | } |
| 1863 | println() // ok |
| 1864 | } |
| 1865 | |
| 1866 | var _ = func() int { |
| 1867 | print(1) |
| 1868 | switch x.(type) { |
| 1869 | case float64: |
| 1870 | return 4 |
| 1871 | case int: |
| 1872 | print(2) |
| 1873 | panic(3) |
| 1874 | } |
| 1875 | println() // ok |
| 1876 | } |
| 1877 | |
| 1878 | var _ = func() int { |
| 1879 | print(1) |
| 1880 | switch x.(type) { |
| 1881 | case int: |
| 1882 | print(2) |
| 1883 | fallthrough |
| 1884 | case float64: |
| 1885 | return 4 |
| 1886 | } |
| 1887 | println() // ok |
| 1888 | } |
| 1889 | |
| 1890 | var _ = func() int { |
| 1891 | print(1) |
| 1892 | switch x.(type) { |
| 1893 | case int: |
| 1894 | print(2) |
| 1895 | panic(3) |
| 1896 | } |
| 1897 | println() // ok |
| 1898 | } |
| 1899 | |
| 1900 | var _ = func() int { |
| 1901 | print(1) |
| 1902 | L: |
| 1903 | switch x.(type) { |
| 1904 | case int: |
| 1905 | print(2) |
| 1906 | panic(3) |
| 1907 | // want "unreachable code" |
| 1908 | default: |
| 1909 | return 4 |
| 1910 | } |
| 1911 | println() // ok |
| 1912 | } |
| 1913 | |
| 1914 | var _ = func() int { |
| 1915 | print(1) |
| 1916 | switch x.(type) { |
| 1917 | default: |
| 1918 | return 4 |
| 1919 | // want "unreachable code" |
| 1920 | case int: |
| 1921 | print(2) |
| 1922 | panic(3) |
| 1923 | } |
| 1924 | println() // ok |
| 1925 | } |
| 1926 | |
| 1927 | var _ = func() int { |
| 1928 | print(1) |
| 1929 | L: |
| 1930 | switch x.(type) { |
| 1931 | case int: |
| 1932 | print(2) |
| 1933 | for { |
| 1934 | break L |
| 1935 | } |
| 1936 | default: |
| 1937 | return 4 |
| 1938 | } |
| 1939 | println() // ok |
| 1940 | } |
| 1941 | |
| 1942 | // again, but without the leading print(1). |
| 1943 | // testing that everything works when the terminating statement is first. |
| 1944 | |
| 1945 | var _ = func() int { |
| 1946 | println() // ok |
| 1947 | } |
| 1948 | |
| 1949 | var _ = func() int { |
| 1950 | return 2 |
| 1951 | // want "unreachable code" |
| 1952 | } |
| 1953 | |
| 1954 | var _ = func() int { |
| 1955 | L: |
| 1956 | goto L |
| 1957 | // want "unreachable code" |
| 1958 | } |
| 1959 | |
| 1960 | var _ = func() int { |
| 1961 | panic(2) |
| 1962 | // want "unreachable code" |
| 1963 | } |
| 1964 | |
| 1965 | // but only builtin panic |
| 1966 | var _ = func() int { |
| 1967 | var panic = func(int) {} |
| 1968 | panic(2) |
| 1969 | println() // ok |
| 1970 | } |
| 1971 | |
| 1972 | var _ = func() int { |
| 1973 | { |
| 1974 | return 2 |
| 1975 | // want "unreachable code" |
| 1976 | } |
| 1977 | } |
| 1978 | |
| 1979 | var _ = func() int { |
| 1980 | { |
| 1981 | return 2 |
| 1982 | } |
| 1983 | // want "unreachable code" |
| 1984 | } |
| 1985 | |
| 1986 | var _ = func() int { |
| 1987 | L: |
| 1988 | { |
| 1989 | goto L |
| 1990 | // want "unreachable code" |
| 1991 | } |
| 1992 | } |
| 1993 | |
| 1994 | var _ = func() int { |
| 1995 | L: |
| 1996 | { |
| 1997 | goto L |
| 1998 | } |
| 1999 | // want "unreachable code" |
| 2000 | } |
| 2001 | |
| 2002 | var _ = func() int { |
| 2003 | { |
| 2004 | panic(2) |
| 2005 | // want "unreachable code" |
| 2006 | } |
| 2007 | } |
| 2008 | |
| 2009 | var _ = func() int { |
| 2010 | { |
| 2011 | panic(2) |
| 2012 | } |
| 2013 | // want "unreachable code" |
| 2014 | } |
| 2015 | |
| 2016 | var _ = func() int { |
| 2017 | return 2 |
| 2018 | |
| 2019 | println() // ok |
| 2020 | } |
| 2021 | |
| 2022 | var _ = func() int { |
| 2023 | L: |
| 2024 | goto L |
| 2025 | |
| 2026 | println() // ok |
| 2027 | } |
| 2028 | |
| 2029 | var _ = func() int { |
| 2030 | panic(2) |
| 2031 | |
| 2032 | println() // ok |
| 2033 | } |
| 2034 | |
| 2035 | var _ = func() int { |
| 2036 | { |
| 2037 | return 2 |
| 2038 | |
| 2039 | } |
| 2040 | println() // ok |
| 2041 | } |
| 2042 | |
| 2043 | var _ = func() int { |
| 2044 | L: |
| 2045 | { |
| 2046 | goto L |
| 2047 | |
| 2048 | } |
| 2049 | println() // ok |
| 2050 | } |
| 2051 | |
| 2052 | var _ = func() int { |
| 2053 | { |
| 2054 | panic(2) |
| 2055 | |
| 2056 | } |
| 2057 | println() // ok |
| 2058 | } |
| 2059 | |
| 2060 | var _ = func() int { |
| 2061 | { |
| 2062 | return 2 |
| 2063 | } |
| 2064 | |
| 2065 | println() // ok |
| 2066 | } |
| 2067 | |
| 2068 | var _ = func() int { |
| 2069 | L: |
| 2070 | { |
| 2071 | goto L |
| 2072 | } |
| 2073 | |
| 2074 | println() // ok |
| 2075 | } |
| 2076 | |
| 2077 | var _ = func() int { |
| 2078 | { |
| 2079 | panic(2) |
| 2080 | } |
| 2081 | |
| 2082 | println() // ok |
| 2083 | } |
| 2084 | |
| 2085 | var _ = func() { |
| 2086 | // goto without label used to panic |
| 2087 | goto |
| 2088 | } |
| 2089 | |
| 2090 | func _() int { |
| 2091 | // Empty switch tag with non-bool case value used to panic. |
| 2092 | switch { |
| 2093 | case 1: |
| 2094 | println() |
| 2095 | } |
| 2096 | println() |
| 2097 | } |
| 2098 |
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