tests/input.at

   1 # Checking the Bison scanner.                    -*- Autotest -*-
   2
   3 # Copyright (C) 2002-2012 Free Software Foundation, Inc.
   4
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 AT_BANNER([[Input Processing.]])
  19
  20 # Mostly test that we are robust to mistakes.
  21
  22
  23 ## ---------------- ##
  24 ## Invalid inputs.  ##
  25 ## ---------------- ##
  26
  27 AT_SETUP([Invalid inputs])
  28
  29 AT_DATA([input.y],
  30 [[%%
  31 ?
  32 default: 'a' }
  33 %&
  34 %a-does-not-exist
  35 %-
  36 %{
  37 ]])
  38
  39 AT_BISON_CHECK([input.y], [1], [],
  40 [[input.y:2.1: invalid character: '?'
  41 input.y:3.14: invalid character: '}'
  42 input.y:4.1: invalid character: '%'
  43 input.y:4.2: invalid character: '&'
  44 input.y:5.1-17: invalid directive: '%a-does-not-exist'
  45 input.y:6.1: invalid character: '%'
  46 input.y:6.2: invalid character: '-'
  47 input.y:7.1-8.0: missing '%}' at end of file
  48 input.y:7.1-8.0: syntax error, unexpected %{...%}
  49 ]])
  50
  51 AT_CLEANUP
  52
  53
  54 AT_SETUP([Invalid inputs with {}])
  55
  56 # We used to SEGV here.  See
  57 # http://lists.gnu.org/archive/html/bug-bison/2005-07/msg00053.html
  58
  59 AT_DATA([input.y],
  60 [[
  61 %destructor
  62 %initial-action
  63 %lex-param
  64 %parse-param
  65 %printer
  66 %union
  67 ]])
  68
  69 AT_BISON_CHECK([input.y], [1], [],
  70 [[input.y:3.1-15: syntax error, unexpected %initial-action, expecting {...}
  71 ]])
  72
  73 AT_CLEANUP
  74
  75
  76
  77 ## ------------ ##
  78 ## Invalid $n.  ##
  79 ## ------------ ##
  80
  81 AT_SETUP([Invalid $n and @n])
  82
  83 AT_DATA([input.y],
  84 [[%%
  85 exp: { $$ = $1 ; };
  86 exp: { @$ = @1 ; };
  87 ]])
  88
  89 AT_BISON_CHECK([input.y], [1], [],
  90 [[input.y:2.13-14: integer out of range: '$1'
  91 input.y:3.13-14: integer out of range: '@1'
  92 ]])
  93
  94 AT_CLEANUP
  95
  96
  97 ## -------------- ##
  98 ## Type Clashes.  ##
  99 ## -------------- ##
 100
 101 AT_SETUP([Type Clashes])
 102
 103 AT_DATA([input.y],
 104 [[%union { int bar; }
 105 %token foo
 106 %type <bar> exp
 107 %%
 108 exp: foo { $$; } foo { $2; } foo
 109    | foo
 110    | /* Empty. */
 111    ;
 112 ]])
 113
 114 AT_BISON_CHECK([input.y], [1], [],
 115 [[input.y:5.12-13: $$ for the midrule at $2 of 'exp' has no declared type
 116 input.y:5.24-25: $2 of 'exp' has no declared type
 117 input.y:5.6-32: warning: type clash on default action: <bar> != <>
 118 input.y:6.6-8: warning: type clash on default action: <bar> != <>
 119 input.y:7.5: warning: empty rule for typed nonterminal, and no action
 120 ]])
 121
 122 AT_CLEANUP
 123
 124
 125 # _AT_UNUSED_VALUES_DECLARATIONS()
 126 # --------------------------------
 127 # Generate the token, type, and destructor
 128 # declarations for the unused values tests.
 129
 130 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
 131 [[[%token <integer> INT;
 132 %type <integer> a b c d e f g h i j k l;
 133 %destructor { destroy ($$); } INT a b c d e f g h i j k l;]]])
 134
 135
 136 # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
 137 # ------------------------------------------------------------------
 138 # Generate a grammar to test unused values,
 139 # compile it, run it.  If DECLARATIONS_AFTER
 140 # is set, then the token, type, and destructor
 141 # declarations are generated after the rules
 142 # rather than before.  If CHECK_MIDRULE_VALUES
 143 # is set, then --warnings=midrule-values is
 144 # set.
 145
 146 m4_define([AT_CHECK_UNUSED_VALUES],
 147 [AT_DATA([input.y],
 148 m4_ifval($1, [
 149
 150
 151 ], [_AT_UNUSED_VALUES_DECLARATIONS
 152 ])[[%%
 153 start:
 154   'a' a { $]2[; } | 'b' b { $]2[; } | 'c' c { $]2[; } | 'd' d { $]2[; }
 155 | 'e' e { $]2[; } | 'f' f { $]2[; } | 'g' g { $]2[; } | 'h' h { $]2[; }
 156 | 'i' i { $]2[; } | 'j' j { $]2[; } | 'k' k { $]2[; } | 'l' l { $]2[; }
 157 ;
 158
 159 a: INT | INT { } INT { } INT { };
 160 b: INT | /* empty */;
 161 c: INT | INT { $]1[; } INT { $<integer>2; } INT { $<integer>4; };
 162 d: INT | INT { } INT { $]1[; } INT { $<integer>2; };
 163 e: INT | INT { } INT {  } INT { $]1[; };
 164 f: INT | INT { } INT {  } INT { $]$[ = $]1[ + $]3[ + $]5[; };
 165 g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
 166 h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
 167 i: INT | INT INT { } { $]$[ = $]1[ + $]2[; };
 168 j: INT | INT INT { $<integer>$ = 1; } { $]$[ = $]1[ + $]2[; };
 169 k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
 170 l: INT | INT { $<integer>$ = $<integer>1; } INT { $<integer>$ = $<integer>2 + $<integer>3; } INT { $<integer>$ = $<integer>4 + $<integer>5; };]]m4_ifval($1, [
 171 _AT_UNUSED_VALUES_DECLARATIONS])
 172 )
 173
 174 AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
 175 [[input.y:11.10-32: warning: unset value: $]$[
 176 input.y:11.10-32: warning: unused value: $]1[
 177 input.y:11.10-32: warning: unused value: $]3[
 178 input.y:11.10-32: warning: unused value: $]5[
 179 input.y:12.9: warning: empty rule for typed nonterminal, and no action
 180 ]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$
 181 input.y:13.26-41: warning: unset value: $$
 182 ]]])[[input.y:13.10-62: warning: unset value: $]$[
 183 input.y:13.10-62: warning: unused value: $]3[
 184 input.y:13.10-62: warning: unused value: $]5[
 185 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
 186 ]]])[[input.y:14.10-49: warning: unset value: $]$[
 187 input.y:14.10-49: warning: unused value: $]3[
 188 input.y:14.10-49: warning: unused value: $]5[
 189 input.y:15.10-37: warning: unset value: $]$[
 190 input.y:15.10-37: warning: unused value: $]3[
 191 input.y:15.10-37: warning: unused value: $]5[
 192 input.y:17.10-58: warning: unset value: $]$[
 193 input.y:17.10-58: warning: unused value: $]1[
 194 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
 195 ]]])[[input.y:17.10-58: warning: unused value: $]3[
 196 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[
 197 ]]])[[input.y:17.10-58: warning: unused value: $]5[
 198 input.y:18.10-72: warning: unset value: $]$[
 199 input.y:18.10-72: warning: unused value: $]1[
 200 input.y:18.10-72: warning: unused value: $]3[
 201 ]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[
 202 ]]])[[input.y:18.10-72: warning: unused value: $]5[
 203 ]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[
 204 ]]])[[input.y:21.10-68: warning: unset value: $]$[
 205 input.y:21.10-68: warning: unused value: $]1[
 206 input.y:21.10-68: warning: unused value: $]2[
 207 ]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[
 208 ]]]))])
 209
 210
 211 ## --------------- ##
 212 ## Unused values.  ##
 213 ## --------------- ##
 214
 215 AT_SETUP([Unused values])
 216 AT_CHECK_UNUSED_VALUES
 217 AT_CHECK_UNUSED_VALUES(, [1])
 218 AT_CLEANUP
 219
 220
 221 ## ------------------------------------------ ##
 222 ## Unused values before symbol declarations.  ##
 223 ## ------------------------------------------ ##
 224
 225 AT_SETUP([Unused values before symbol declarations])
 226 AT_CHECK_UNUSED_VALUES([1])
 227 AT_CHECK_UNUSED_VALUES([1], [1])
 228 AT_CLEANUP
 229
 230
 231 ## --------------------------------------------- ##
 232 ## Default %printer and %destructor redeclared.  ##
 233 ## --------------------------------------------- ##
 234
 235 AT_SETUP([Default %printer and %destructor redeclared])
 236
 237 AT_DATA([[input.y]],
 238 [[%destructor { destroy ($$); } <*> <*>
 239 %printer { print ($$); } <*> <*>
 240
 241 %destructor { destroy ($$); } <*>
 242 %printer { print ($$); } <*>
 243
 244 %destructor { destroy ($$); } <> <>
 245 %printer { print ($$); } <> <>
 246
 247 %destructor { destroy ($$); } <>
 248 %printer { print ($$); } <>
 249
 250 %%
 251
 252 start: ;
 253
 254 %destructor { destroy ($$); } <*>;
 255 %printer { print ($$); } <*>;
 256
 257 %destructor { destroy ($$); } <>;
 258 %printer { print ($$); } <>;
 259 ]])
 260
 261 AT_BISON_CHECK([input.y], [1], [],
 262 [[input.y:1.13-29: redeclaration for default tagged %destructor
 263 input.y:1.13-29: previous declaration
 264 input.y:2.10-24: redeclaration for default tagged %printer
 265 input.y:2.10-24: previous declaration
 266 input.y:4.13-29: redeclaration for default tagged %destructor
 267 input.y:1.13-29: previous declaration
 268 input.y:5.10-24: redeclaration for default tagged %printer
 269 input.y:2.10-24: previous declaration
 270 input.y:7.13-29: redeclaration for default tagless %destructor
 271 input.y:7.13-29: previous declaration
 272 input.y:8.10-24: redeclaration for default tagless %printer
 273 input.y:8.10-24: previous declaration
 274 input.y:10.13-29: redeclaration for default tagless %destructor
 275 input.y:7.13-29: previous declaration
 276 input.y:11.10-24: redeclaration for default tagless %printer
 277 input.y:8.10-24: previous declaration
 278 input.y:17.13-29: redeclaration for default tagged %destructor
 279 input.y:4.13-29: previous declaration
 280 input.y:18.10-24: redeclaration for default tagged %printer
 281 input.y:5.10-24: previous declaration
 282 input.y:20.13-29: redeclaration for default tagless %destructor
 283 input.y:10.13-29: previous declaration
 284 input.y:21.10-24: redeclaration for default tagless %printer
 285 input.y:11.10-24: previous declaration
 286 ]])
 287
 288 AT_CLEANUP
 289
 290
 291 ## ---------------------------------------------- ##
 292 ## Per-type %printer and %destructor redeclared.  ##
 293 ## ---------------------------------------------- ##
 294
 295 AT_SETUP([Per-type %printer and %destructor redeclared])
 296
 297 AT_DATA([[input.y]],
 298 [[%destructor { destroy ($$); } <field1> <field2>
 299 %printer { print ($$); } <field1> <field2>
 300
 301 %destructor { destroy ($$); } <field1> <field1>
 302 %printer { print ($$); } <field2> <field2>
 303
 304 %%
 305
 306 start: ;
 307
 308 %destructor { destroy ($$); } <field2> <field1>;
 309 %printer { print ($$); } <field2> <field1>;
 310 ]])
 311
 312 AT_BISON_CHECK([input.y], [1], [],
 313 [[input.y:4.13-29: %destructor redeclaration for <field1>
 314 input.y:1.13-29: previous declaration
 315 input.y:4.13-29: %destructor redeclaration for <field1>
 316 input.y:4.13-29: previous declaration
 317 input.y:5.10-24: %printer redeclaration for <field2>
 318 input.y:2.10-24: previous declaration
 319 input.y:5.10-24: %printer redeclaration for <field2>
 320 input.y:5.10-24: previous declaration
 321 input.y:11.13-29: %destructor redeclaration for <field1>
 322 input.y:4.13-29: previous declaration
 323 input.y:11.13-29: %destructor redeclaration for <field2>
 324 input.y:1.13-29: previous declaration
 325 input.y:12.10-24: %printer redeclaration for <field1>
 326 input.y:2.10-24: previous declaration
 327 input.y:12.10-24: %printer redeclaration for <field2>
 328 input.y:5.10-24: previous declaration
 329 ]])
 330
 331 AT_CLEANUP
 332
 333
 334 ## ---------------------------------------- ##
 335 ## Unused values with default %destructor.  ##
 336 ## ---------------------------------------- ##
 337
 338 AT_SETUP([Unused values with default %destructor])
 339
 340 AT_DATA([[input.y]],
 341 [[%destructor { destroy ($$); } <>
 342 %type <tag> tagged
 343
 344 %%
 345
 346 start: end end tagged tagged { $<tag>1; $3; } ;
 347 end: { } ;
 348 tagged: { } ;
 349 ]])
 350
 351 AT_BISON_CHECK([input.y], [0], [],
 352 [[input.y:6.8-45: warning: unset value: $$
 353 input.y:6.8-45: warning: unused value: $2
 354 input.y:7.6-8: warning: unset value: $$
 355 ]])
 356
 357 AT_DATA([[input.y]],
 358 [[%destructor { destroy ($$); } <*>
 359 %type <tag> tagged
 360
 361 %%
 362
 363 start: end end tagged tagged { $<tag>1; $3; } ;
 364 end: { } ;
 365 tagged: { } ;
 366 ]])
 367
 368 AT_BISON_CHECK([input.y], [0], [],
 369 [[input.y:6.8-45: warning: unused value: $4
 370 input.y:8.9-11: warning: unset value: $$
 371 ]])
 372
 373 AT_CLEANUP
 374
 375
 376 ## ----------------------------------------- ##
 377 ## Unused values with per-type %destructor.  ##
 378 ## ----------------------------------------- ##
 379
 380 AT_SETUP([Unused values with per-type %destructor])
 381
 382 AT_DATA([[input.y]],
 383 [[%destructor { destroy ($$); } <field1>
 384 %type <field1> start end
 385
 386 %%
 387
 388 start: end end { $1; } ;
 389 end: { }  ;
 390 ]])
 391
 392 AT_BISON_CHECK([input.y], [0], [],
 393 [[input.y:6.8-22: warning: unset value: $$
 394 input.y:6.8-22: warning: unused value: $2
 395 input.y:7.6-8: warning: unset value: $$
 396 ]])
 397
 398 AT_CLEANUP
 399
 400
 401 ## ---------------------- ##
 402 ## Incompatible Aliases.  ##
 403 ## ---------------------- ##
 404
 405 AT_SETUP([Incompatible Aliases])
 406
 407 AT_DATA([input.y],
 408 [[%token foo "foo"
 409
 410 %type <bar>       foo
 411 %printer {bar}    foo
 412 %destructor {bar} foo
 413 %left             foo
 414
 415 %type <baz>       "foo"
 416 %printer {baz}    "foo"
 417 %destructor {baz} "foo"
 418 %left             "foo"
 419
 420 %%
 421 exp: foo;
 422 ]])
 423
 424 AT_BISON_CHECK([input.y], [1], [],
 425 [[input.y:8.7-11: %type redeclaration for foo
 426 input.y:3.7-11: previous declaration
 427 input.y:10.13-17: %destructor redeclaration for foo
 428 input.y:5.13-17: previous declaration
 429 input.y:9.10-14: %printer redeclaration for foo
 430 input.y:4.10-14: previous declaration
 431 input.y:11.1-5: %left redeclaration for foo
 432 input.y:6.1-5: previous declaration
 433 ]])
 434
 435 AT_CLEANUP
 436
 437
 438
 439 ## ----------------------- ##
 440 ## Torturing the Scanner.  ##
 441 ## ----------------------- ##
 442
 443 # Be sure to compile and run, so that the C compiler checks what
 444 # we do.
 445
 446 AT_SETUP([Torturing the Scanner])
 447
 448 AT_BISON_OPTION_PUSHDEFS
 449 AT_DATA([input.y], [])
 450 AT_BISON_CHECK([input.y], [1], [],
 451 [[input.y:1.1: syntax error, unexpected end of file
 452 ]])
 453
 454
 455 AT_DATA([input.y],
 456 [{}
 457 ])
 458 AT_BISON_CHECK([input.y], [1], [],
 459 [[input.y:1.1-2: syntax error, unexpected {...}
 460 ]])
 461
 462
 463 AT_DATA_GRAMMAR([input.y],
 464 [[%{
 465 /* This is seen in GCC: a %{ and %} in middle of a comment. */
 466 const char *foo = "So %{ and %} can be here too.";
 467
 468 #if 0
 469 /* These examples test Bison while not stressing C compilers too much.
 470    Many C compilers mishandle backslash-newlines, so this part of the
 471    test is inside "#if 0".  The comment and string are written so that
 472    the "#endif" will be seen regardless of the C compiler bugs that we
 473    know about, namely:
 474
 475      HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
 476      comment.
 477
 478      The Apple Darwin compiler (as of late 2002) mishandles
 479      \\[newline]' within a character constant.
 480
 481    */
 482
 483 /\
 484 * A comment with backslash-newlines in it. %} *\
 485 \
 486 /
 487 /* { Close the above comment, if the C compiler mishandled it.  */
 488
 489 char str[] = "\\
 490 " A string with backslash-newlines in it %{ %} \\
 491 \
 492 "";
 493
 494 char apostrophe = '\'';
 495 #endif
 496
 497 #include <stdio.h>
 498 #include <stdlib.h>
 499 #include <assert.h>
 500 %}
 501 /* %{ and %} can be here too. */
 502
 503 %{
 504 /* Exercise pre-prologue dependency to %union.  */
 505 typedef int value;
 506 %}
 507
 508 /* Exercise M4 quoting: '@:>@@:>@', 0.  */
 509
 510 /* Also exercise %union. */
 511 %union
 512 {
 513   value ival; /* A comment to exercise an old bug. */
 514 };
 515
 516
 517 /* Exercise post-prologue dependency to %union.  */
 518 %{
 519 static YYSTYPE value_as_yystype (value val);
 520
 521 /* Exercise quotes in declarations.  */
 522 char quote[] = "@:>@@:>@,";
 523 %}
 524
 525 %{
 526 ]AT_YYERROR_DECLARE[
 527 ]AT_YYLEX_DECLARE[
 528 %}
 529
 530 %type <ival> '@<:@'
 531
 532 /* Exercise quotes in strings.  */
 533 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
 534
 535 %%
 536 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1.  */
 537 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
 538   {
 539     /* Exercise quotes in braces.  */
 540     char tmp[] = "@<:@%c@:>@,\n";
 541     printf (tmp, $1);
 542   }
 543 ;
 544
 545 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
 546 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
 547 output.or.oline.opt: ;|oline;;|output;;;
 548 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
 549 %%
 550 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2.  */
 551
 552 static YYSTYPE
 553 value_as_yystype (value val)
 554 {
 555   YYSTYPE res;
 556   res.ival = val;
 557   return res;
 558 }
 559 ]AT_YYERROR_DEFINE[
 560 static int
 561 yylex (void)
 562 {
 563   static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
 564 #output "; /* "
 565   */
 566   static size_t toknum;
 567   assert (toknum < sizeof input);
 568   yylval = value_as_yystype (input[toknum]);
 569   return input[toknum++];
 570 }
 571 ]])
 572
 573 # Pacify Emacs' font-lock-mode: "
 574
 575 AT_DATA([main.c],
 576 [[typedef int value;
 577 #include "input.h"
 578
 579 int yyparse (void);
 580
 581 int
 582 main (void)
 583 {
 584   return yyparse ();
 585 }
 586 ]])
 587 AT_BISON_OPTION_POPDEFS
 588
 589 AT_BISON_CHECK([-d -v -o input.c input.y])
 590 AT_COMPILE([input.o])
 591 AT_COMPILE([main.o])
 592 AT_COMPILE([input], [input.o main.o])
 593 AT_PARSER_CHECK([./input], 0,
 594 [[[@<:@],
 595 ]])
 596
 597 AT_CLEANUP
 598
 599
 600 ## ---------------------- ##
 601 ## Typed symbol aliases.  ##
 602 ## ---------------------- ##
 603
 604 AT_SETUP([Typed symbol aliases])
 605
 606 # Bison 2.0 broke typed symbol aliases - ensure they work.
 607
 608 AT_DATA_GRAMMAR([input.y],
 609 [[%union
 610 {
 611   int val;
 612 };
 613 %token <val> MY_TOKEN "MY TOKEN"
 614 %type <val> exp
 615 %%
 616 exp: "MY TOKEN";
 617 %%
 618 ]])
 619
 620 AT_BISON_CHECK([-o input.c input.y])
 621
 622 AT_CLEANUP
 623
 624
 625 ## --------- ##
 626 ## Require.  ##
 627 ## --------- ##
 628
 629 m4_define([AT_CHECK_REQUIRE],
 630 [AT_SETUP([Require $1])
 631 AT_DATA_GRAMMAR([input.y],
 632 [[%require "$1";
 633 %%
 634 empty_file:;
 635 ]])
 636 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
 637 AT_CLEANUP
 638 ])
 639
 640 AT_CHECK_REQUIRE(1.0, 0)
 641 AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
 642 ## FIXME: Some day augment this version number.
 643 AT_CHECK_REQUIRE(100.0, 63)
 644
 645
 646 ## ------------------------------------- ##
 647 ## String aliases for character tokens.  ##
 648 ## ------------------------------------- ##
 649
 650 AT_SETUP([String aliases for character tokens])
 651
 652 # Bison once thought a character token and its alias were different symbols
 653 # with the same user token number.
 654
 655 AT_DATA_GRAMMAR([input.y],
 656 [[%token 'a' "a"
 657 %%
 658 start: 'a';
 659 %%
 660 ]])
 661
 662 AT_BISON_CHECK([-o input.c input.y])
 663
 664 AT_CLEANUP
 665
 666
 667 ## -------------- ##
 668 ## Symbol names.  ##
 669 ## -------------- ##
 670
 671 AT_SETUP([Symbols])
 672
 673 AT_BISON_OPTION_PUSHDEFS
 674 AT_DATA_GRAMMAR([input.y],
 675 [[%token WITH-DASH
 676 %token WITHOUT_DASH "WITHOUT-DASH"
 677 %token WITH.PERIOD
 678 %token WITHOUT_PERIOD "WITHOUT.PERIOD"
 679 %code {
 680   ]AT_YYERROR_DECLARE[
 681   ]AT_YYLEX_DECLARE[
 682 }
 683 %%
 684 start: with-dash without_dash with.period without_period;
 685 with-dash: WITH-DASH;
 686 without_dash: "WITHOUT-DASH";
 687 with.period: WITH.PERIOD;
 688 without_period: "WITHOUT.PERIOD";
 689 %%
 690 ]AT_YYERROR_DEFINE[
 691 ]AT_YYLEX_DEFINE[
 692 ]])
 693 AT_BISON_OPTION_POPDEFS
 694
 695 # POSIX Yacc accept periods, but not dashes.
 696 AT_BISON_CHECK([--yacc input.y], [1], [],
 697 [[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH
 698 input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash
 699 ]])
 700
 701 # So warn about them.
 702 AT_BISON_CHECK([-Wyacc input.y], [], [],
 703 [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH
 704 input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash
 705 ]])
 706
 707 # Dashes are fine for GNU Bison.
 708 AT_BISON_CHECK([-o input.c input.y])
 709
 710 # Make sure we don't export silly token identifiers with periods or dashes.
 711 AT_COMPILE([input.o])
 712
 713
 714 # Periods are genuine letters, they can start identifiers.
 715 # Digits and dashes cannot.
 716 AT_DATA_GRAMMAR([input.y],
 717 [[%token .GOOD
 718          -GOOD
 719          1NV4L1D
 720          -123
 721 %%
 722 start: .GOOD GOOD
 723 ]])
 724 AT_BISON_CHECK([-o input.c input.y], [1], [],
 725 [[input.y:10.10: invalid character: '-'
 726 input.y:11.10-16: invalid identifier: '1NV4L1D'
 727 input.y:12.10: invalid character: '-'
 728 ]])
 729
 730 AT_CLEANUP
 731
 732
 733 ## ----------------- ##
 734 ## Numbered tokens.  ##
 735 ## ----------------- ##
 736
 737 AT_SETUP([Numbered tokens])
 738
 739 AT_DATA_GRAMMAR([redecl.y],
 740 [[%token DECIMAL_1     11259375
 741          HEXADECIMAL_1 0xabcdef
 742          HEXADECIMAL_2 0xFEDCBA
 743          DECIMAL_2     16702650
 744 %%
 745 start: DECIMAL_1 HEXADECIMAL_2;
 746 ]])
 747
 748 AT_BISON_CHECK([redecl.y], [1], [],
 749 [[redecl.y:10.10-22: user token number 11259375 redeclaration for HEXADECIMAL_1
 750 redecl.y:9.8-16: previous declaration for DECIMAL_1
 751 redecl.y:12.10-18: user token number 16702650 redeclaration for DECIMAL_2
 752 redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
 753 ]])
 754
 755 AT_DATA_GRAMMAR([too-large.y],
 756 [[%token TOO_LARGE_DEC 999999999999999999999
 757          TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
 758 %%
 759 start: TOO_LARGE_DEC TOO_LARGE_HEX
 760 %%
 761 ]])
 762
 763 AT_BISON_CHECK([too-large.y], [1], [],
 764 [[too-large.y:9.22-42: integer out of range: '999999999999999999999'
 765 too-large.y:10.24-44: integer out of range: '0xFFFFFFFFFFFFFFFFFFF'
 766 ]])
 767
 768 AT_CLEANUP
 769
 770
 771 ## --------------------- ##
 772 ## Unclosed constructs.  ##
 773 ## --------------------- ##
 774
 775 AT_SETUP([Unclosed constructs])
 776
 777 # Bison's scan-gram.l once forgot to STRING_FINISH some unclosed constructs, so
 778 # they were prepended to whatever it STRING_GROW'ed next.  It also threw them
 779 # away rather than returning them to the parser.  The effect was confusing
 780 # subsequent error messages.
 781
 782 AT_DATA([input.y],
 783 [[%token A "a
 784 %token B "b"
 785 %token AB "ab" // Used to complain that "ab" was already used.
 786 %token C '1
 787 %token TWO "2"
 788 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
 789
 790 %%
 791
 792 start: ;
 793
 794 // Used to report a syntax error because it didn't see any kind of symbol
 795 // identifier.
 796 %type <f> 'a
 797 ;
 798 %type <f> "a
 799 ;
 800 // Used to report a syntax error because it didn't see braced code.
 801 %destructor { free ($$)
 802 ]])
 803
 804 AT_BISON_CHECK([-o input.c input.y], 1, [],
 805 [[input.y:1.10-2.0: missing '"' at end of line
 806 input.y:4.10-5.0: missing "'" at end of line
 807 input.y:14.11-15.0: missing "'" at end of line
 808 input.y:16.11-17.0: missing '"' at end of line
 809 input.y:19.13-20.0: missing '}' at end of file
 810 input.y:20.1: syntax error, unexpected end of file
 811 ]])
 812
 813 AT_CLEANUP
 814
 815
 816 ## ------------------------- ##
 817 ## %start after first rule.  ##
 818 ## ------------------------- ##
 819
 820 AT_SETUP([%start after first rule])
 821
 822 # Bison once complained that a %start after the first rule was a redeclaration
 823 # of the start symbol.
 824
 825 AT_DATA([input.y],
 826 [[%%
 827 false_start: ;
 828 start: false_start ;
 829 %start start;
 830 ]])
 831
 832 AT_BISON_CHECK([-o input.c input.y])
 833
 834 AT_CLEANUP
 835
 836
 837 ## --------------------- ##
 838 ## %prec takes a token.  ##
 839 ## --------------------- ##
 840
 841 AT_SETUP([%prec takes a token])
 842
 843 # Bison once allowed %prec sym where sym was a nonterminal.
 844
 845 AT_DATA([input.y],
 846 [[%%
 847 start: PREC %prec PREC ;
 848 PREC: ;
 849 ]])
 850
 851 AT_BISON_CHECK([input.y], [1], [],
 852 [[input.y:3.1-4: rule given for PREC, which is a token
 853 ]])
 854
 855 AT_CLEANUP
 856
 857
 858 ## ------------------------------- ##
 859 ## %prec's token must be defined.  ##
 860 ## ------------------------------- ##
 861
 862 AT_SETUP([[%prec's token must be defined]])
 863
 864 # According to POSIX, a %prec token must be defined separately.
 865
 866 AT_DATA([[input.y]],
 867 [[%%
 868 start: %prec PREC ;
 869 ]])
 870
 871 AT_BISON_CHECK([[input.y]], [[0]], [],
 872 [[input.y:2.8-17: warning: token for %prec is not defined: PREC
 873 ]])
 874
 875 AT_CLEANUP
 876
 877
 878 ## -------------------------------- ##
 879 ## Reject unused %code qualifiers.  ##
 880 ## -------------------------------- ##
 881
 882 AT_SETUP([Reject unused %code qualifiers])
 883
 884 AT_DATA([input-c.y],
 885 [[%code q {}
 886 %code bad {}
 887 %code bad {}
 888 %code format {}
 889 %%
 890 start: ;
 891 ]])
 892 AT_BISON_CHECK([[input-c.y]], [[1]], [],
 893 [[input-c.y:1.7: %code qualifier 'q' is not used
 894 input-c.y:2.7-9: %code qualifier 'bad' is not used
 895 input-c.y:3.7-9: %code qualifier 'bad' is not used
 896 input-c.y:4.7-12: %code qualifier 'format' is not used
 897 ]])
 898
 899 AT_DATA([input-c-glr.y],
 900 [[%code q {}
 901 %code bad {}
 902  %code bad {}
 903 %%
 904 start: ;
 905 ]])
 906 AT_BISON_CHECK([[input-c-glr.y]], [[1]], [],
 907 [[input-c-glr.y:1.7: %code qualifier 'q' is not used
 908 input-c-glr.y:2.7-9: %code qualifier 'bad' is not used
 909 input-c-glr.y:3.8-10: %code qualifier 'bad' is not used
 910 ]])
 911
 912 AT_DATA([input-c++.y],
 913 [[%code q {}
 914 %code bad {}
 915  %code q {}
 916 %%
 917 start: ;
 918 ]])
 919 AT_BISON_CHECK([[input-c++.y]], [[1]], [],
 920 [[input-c++.y:1.7: %code qualifier 'q' is not used
 921 input-c++.y:2.7-9: %code qualifier 'bad' is not used
 922 input-c++.y:3.8: %code qualifier 'q' is not used
 923 ]])
 924
 925 AT_DATA([input-c++-glr.y],
 926 [[%code bad {}
 927 %code q {}
 928 %code q {}
 929 %%
 930 start: ;
 931 ]])
 932 AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [],
 933 [[input-c++-glr.y:1.7-9: %code qualifier 'bad' is not used
 934 input-c++-glr.y:2.7: %code qualifier 'q' is not used
 935 input-c++-glr.y:3.7: %code qualifier 'q' is not used
 936 ]])
 937
 938 AT_DATA([special-char-@@.y],
 939 [[%code bad {}
 940 %code q {}
 941 %code q {}
 942 %%
 943 start: ;
 944 ]])
 945 AT_BISON_CHECK([[special-char-@@.y]], [[1]], [],
 946 [[special-char-@@.y:1.7-9: %code qualifier 'bad' is not used
 947 special-char-@@.y:2.7: %code qualifier 'q' is not used
 948 special-char-@@.y:3.7: %code qualifier 'q' is not used
 949 ]])
 950
 951 AT_DATA([special-char-@:>@.y],
 952 [[%code bad {}
 953 %code q {}
 954 %code q {}
 955 %%
 956 start: ;
 957 ]])
 958 AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [],
 959 [[special-char-@:>@.y:1.7-9: %code qualifier 'bad' is not used
 960 special-char-@:>@.y:2.7: %code qualifier 'q' is not used
 961 special-char-@:>@.y:3.7: %code qualifier 'q' is not used
 962 ]])
 963
 964 AT_CLEANUP
 965
 966
 967 ## ---------------- ##
 968 ## %define errors.  ##
 969 ## ---------------- ##
 970
 971 AT_SETUP([%define errors])
 972
 973 AT_DATA([input-redefined.y],
 974 [[%define var "value1"
 975 %define var "value1"
 976  %define var "value2"
 977 %define special1 "@:>@"
 978 %define special2 "@<:@"
 979 %%
 980 start: ;
 981 ]])
 982
 983 AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
 984 [[input-redefined.y:2.9-11: %define variable 'var' redefined
 985 input-redefined.y:1.9-11: previous definition
 986 input-redefined.y:3.10-12: %define variable 'var' redefined
 987 input-redefined.y:2.9-11: previous definition
 988 ]])
 989
 990 AT_DATA([input-unused.y],
 991 [[%define var "value"
 992 %%
 993 start: ;
 994 ]])
 995
 996 AT_BISON_CHECK([[input-unused.y]], [[1]], [],
 997 [[input-unused.y:1.9-11: %define variable 'var' is not used
 998 ]])
 999
1000 AT_CLEANUP
1001
1002
1003 ## ----------------------------------- ##
1004 ## %define, --define, --force-define.  ##
1005 ## ----------------------------------- ##
1006
1007 AT_SETUP([[%define, --define, --force-define]])
1008
1009 AT_DATA([[skel.c]],
1010 [[m4@&t@_divert_push(0)@
1011 @output(b4_parser_file_name@)@
1012 [var-dd: ]b4_percent_define_get([[var-dd]])[
1013 var-ff: ]b4_percent_define_get([[var-ff]])[
1014 var-dfg: ]b4_percent_define_get([[var-dfg]])[
1015 var-fd: ]b4_percent_define_get([[var-fd]])
1016 m4@&t@_divert_pop(0)
1017 ]])
1018 AT_DATA([[input.y]],
1019 [[%define var-dfg "gram"
1020 %%
1021 start: ;
1022 ]])
1023 AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
1024                  -Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
1025                  -Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \
1026                  -Fvar-fd=cmd-f -Dvar-fd=cmd-d   \
1027                  --skeleton ./skel.c input.y]])
1028 AT_CHECK([[cat input.tab.c]], [[0]],
1029 [[var-dd: cmd-d2
1030 var-ff: cmd-f2
1031 var-dfg: cmd-f
1032 var-fd: cmd-d
1033 ]])
1034
1035 AT_DATA([[input-dg.y]],
1036 [[%define var "gram"
1037 %%
1038 start: ;
1039 ]])
1040 AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
1041 [[input-dg.y:1.9-11: %define variable 'var' redefined
1042 <command line>:2: previous definition
1043 ]])
1044
1045 AT_DATA([[input-unused.y]],
1046 [[%%
1047 start: ;
1048 ]])
1049 AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [],
1050 [[<command line>:2: %define variable 'unused-d' is not used
1051 <command line>:3: %define variable 'unused-f' is not used
1052 ]])
1053
1054 AT_CLEANUP
1055
1056 ## --------------------------- ##
1057 ## %define Boolean variables.  ##
1058 ## --------------------------- ##
1059
1060 AT_SETUP([[%define Boolean variables]])
1061
1062 AT_DATA([Input.y],
1063 [[%language "Java"
1064 %define public "maybe"
1065 %define parser_class_name "Input"
1066 %%
1067 start: ;
1068 ]])
1069
1070 AT_BISON_CHECK([[Input.y]], [1], [],
1071 [[Input.y:2.9-14: invalid value for %define Boolean variable 'public'
1072 ]])
1073
1074 AT_CLEANUP
1075
1076 ## ------------------------ ##
1077 ## %define enum variables.  ##
1078 ## ------------------------ ##
1079
1080 AT_SETUP([[%define enum variables]])
1081
1082 # Front-end.
1083 AT_DATA([[input.y]],
1084 [[%define lr.default-reductions bogus
1085 %%
1086 start: ;
1087 ]])
1088 AT_BISON_CHECK([[input.y]], [[1]], [[]],
1089 [[input.y:1.9-29: invalid value for %define variable 'lr.default-reductions': 'bogus'
1090 input.y:1.9-29: accepted value: 'most'
1091 input.y:1.9-29: accepted value: 'consistent'
1092 input.y:1.9-29: accepted value: 'accepting'
1093 ]])
1094
1095 # Back-end.
1096 AT_DATA([[input.y]],
1097 [[%define api.push-pull neither
1098 %%
1099 start: ;
1100 ]])
1101 AT_BISON_CHECK([[input.y]], [1], [],
1102 [[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
1103 input.y:1.9-21: accepted value: 'pull'
1104 input.y:1.9-21: accepted value: 'push'
1105 input.y:1.9-21: accepted value: 'both'
1106 ]])
1107
1108 AT_CLEANUP
1109
1110 ## -------------------------------- ##
1111 ## %define backward compatibility.  ##
1112 ## -------------------------------- ##
1113
1114 AT_SETUP([[%define backward compatibility]])
1115
1116 # The error messages tell us whether underscores in these variables are
1117 # being converted to dashes.
1118
1119 AT_DATA([[input.y]],
1120 [[%define api.push_pull "neither"
1121 %%
1122 start: ;
1123 ]])
1124 AT_BISON_CHECK([[input.y]], [1], [],
1125 [[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
1126 input.y:1.9-21: accepted value: 'pull'
1127 input.y:1.9-21: accepted value: 'push'
1128 input.y:1.9-21: accepted value: 'both'
1129 ]])
1130
1131 AT_DATA([[input.y]],
1132 [[%define lr.keep_unreachable_states maybe
1133 %%
1134 start: ;
1135 ]])
1136 AT_BISON_CHECK([[input.y]], [1], [],
1137 [[input.y:1.9-34: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
1138 ]])
1139
1140 AT_DATA([[input.y]],
1141 [[%define foo_bar "baz"
1142 %%
1143 start: ;
1144 ]])
1145 AT_BISON_CHECK([[input.y]], [[1]], [],
1146 [[input.y:1.9-15: %define variable 'foo_bar' is not used
1147 ]])
1148
1149 AT_CLEANUP
1150
1151 ## ------------------------- ##
1152 ## Unused %define api.pure.  ##
1153 ## ------------------------- ##
1154
1155 AT_SETUP([[Unused %define api.pure]])
1156
1157 # AT_CHECK_API_PURE(DECLS, VALUE)
1158 # -------------------------------
1159 # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
1160 # are specified.
1161 m4_define([AT_CHECK_API_PURE],
1162 [
1163 AT_DATA([[input.y]],
1164 [[%define api.pure ]$2[
1165 ]$1[
1166 %%
1167 start: ;
1168 ]])
1169
1170 AT_BISON_CHECK([[input.y]], [[1]], [],
1171 [[input.y:1.9-16: %define variable 'api.pure' is not used
1172 ]])
1173 ])
1174
1175 AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
1176 AT_CHECK_API_PURE([[%language "c++" %defines]], [[false]])
1177 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
1178 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[false]])
1179 AT_CHECK_API_PURE([[%language "java"]], [[true]])
1180 AT_CHECK_API_PURE([[%language "java"]], [[false]])
1181
1182 AT_CLEANUP
1183
1184 ## -------------------------------- ##
1185 ## C++ namespace reference errors.  ##
1186 ## -------------------------------- ##
1187
1188 AT_SETUP([[C++ namespace reference errors]])
1189
1190 # AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
1191 # -------------------------------------------------------------
1192 # Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
1193 m4_define([AT_CHECK_NAMESPACE_ERROR],
1194 [
1195 AT_DATA([[input.y]],
1196 [[%language "C++"
1197 %defines
1198 %define namespace "]$1["
1199 %%
1200 start: ;
1201 ]])
1202
1203 AT_BISON_CHECK([[input.y]], [1], [],
1204 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
1205 [[input.y:3.9-17: ]b4_arg[
1206 ]])])
1207 ])
1208
1209 AT_CHECK_NAMESPACE_ERROR([[]],
1210                          [[namespace reference is empty]])
1211 AT_CHECK_NAMESPACE_ERROR([[                             ]],
1212                          [[namespace reference is empty]])
1213 AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
1214                          [[namespace reference has consecutive "::"]])
1215 AT_CHECK_NAMESPACE_ERROR([[foo::        ::bar]],
1216                          [[namespace reference has consecutive "::"]])
1217 AT_CHECK_NAMESPACE_ERROR([[::::bar]],
1218                          [[namespace reference has consecutive "::"]])
1219 AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
1220                          [[namespace reference has consecutive "::"]])
1221 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ::]],
1222                          [[namespace reference has consecutive "::"]],
1223                          [[namespace reference has a trailing "::"]])
1224 AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
1225                          [[namespace reference has a trailing "::"]])
1226 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ]],
1227                          [[namespace reference has a trailing "::"]])
1228 AT_CHECK_NAMESPACE_ERROR([[::]],
1229                          [[namespace reference has a trailing "::"]])
1230
1231 AT_CLEANUP
1232
1233 ## ------------------------ ##
1234 ## Bad character literals.  ##
1235 ## ------------------------ ##
1236
1237 # Bison used to accept character literals that were empty or contained
1238 # too many characters.
1239
1240 # FIXME: AT_DATA or some variant of AT_DATA may eventually permit
1241 # the final newline to be omitted.  See the threads starting at
1242 # <http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00019.html>.
1243
1244 AT_SETUP([[Bad character literals]])
1245
1246 AT_DATA([empty.y],
1247 [[%%
1248 start: '';
1249 start: '
1250 ]])
1251 AT_CHECK([[$PERL -e "print 'start: \'';" >> empty.y || exit 77]])
1252
1253 AT_BISON_CHECK([empty.y], [1], [],
1254 [[empty.y:2.8-9: warning: empty character literal
1255 empty.y:3.8-4.0: warning: empty character literal
1256 empty.y:3.8-4.0: missing "'" at end of line
1257 empty.y:4.8: warning: empty character literal
1258 empty.y:4.8: missing "'" at end of file
1259 ]])
1260
1261 AT_DATA([two.y],
1262 [[%%
1263 start: 'ab';
1264 start: 'ab
1265 ]])
1266 AT_CHECK([[$PERL -e "print 'start: \'ab';" >> two.y || exit 77]])
1267
1268 AT_BISON_CHECK([two.y], [1], [],
1269 [[two.y:2.8-11: warning: extra characters in character literal
1270 two.y:3.8-4.0: warning: extra characters in character literal
1271 two.y:3.8-4.0: missing "'" at end of line
1272 two.y:4.8-10: warning: extra characters in character literal
1273 two.y:4.8-10: missing "'" at end of file
1274 ]])
1275
1276 AT_DATA([three.y],
1277 [[%%
1278 start: 'abc';
1279 start: 'abc
1280 ]])
1281 AT_CHECK([[$PERL -e "print 'start: \'abc';" >> three.y || exit 77]])
1282
1283 AT_BISON_CHECK([three.y], [1], [],
1284 [[three.y:2.8-12: warning: extra characters in character literal
1285 three.y:3.8-4.0: warning: extra characters in character literal
1286 three.y:3.8-4.0: missing "'" at end of line
1287 three.y:4.8-11: warning: extra characters in character literal
1288 three.y:4.8-11: missing "'" at end of file
1289 ]])
1290
1291 AT_CLEANUP
1292
1293 ## ------------------------- ##
1294 ## Bad escapes in literals.  ##
1295 ## ------------------------- ##
1296
1297 AT_SETUP([[Bad escapes in literals]])
1298
1299 AT_DATA([input.y],
1300 [[%%
1301 start: '\777' '\0' '\xfff' '\x0'
1302        '\uffff' '\u0000' '\Uffffffff' '\U00000000'
1303        '\ ' '\A';
1304 ]])
1305
1306 # It is not easy to create special characters, we cannot even trust tr.
1307 # Beside we cannot even expect "echo '\0'" to output two characters
1308 # (well three with \n): at least Bash 3.2 converts the two-character
1309 # sequence "\0" into a single NUL character.
1310 AT_CHECK([[$PERL -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
1311            || exit 77]])
1312
1313 AT_BISON_CHECK([input.y], [1], [],
1314 [[input.y:2.9-12: invalid number after \-escape: 777
1315 input.y:2.8-13: warning: empty character literal
1316 input.y:2.16-17: invalid number after \-escape: 0
1317 input.y:2.15-18: warning: empty character literal
1318 input.y:2.21-25: invalid number after \-escape: xfff
1319 input.y:2.20-26: warning: empty character literal
1320 input.y:2.29-31: invalid number after \-escape: x0
1321 input.y:2.28-32: warning: empty character literal
1322 input.y:3.9-14: invalid number after \-escape: uffff
1323 input.y:3.8-15: warning: empty character literal
1324 input.y:3.18-23: invalid number after \-escape: u0000
1325 input.y:3.17-24: warning: empty character literal
1326 input.y:3.27-36: invalid number after \-escape: Uffffffff
1327 input.y:3.26-37: warning: empty character literal
1328 input.y:3.40-49: invalid number after \-escape: U00000000
1329 input.y:3.39-50: warning: empty character literal
1330 input.y:4.9-10: invalid character after \-escape: ' '
1331 input.y:4.8-11: warning: empty character literal
1332 input.y:4.14-15: invalid character after \-escape: A
1333 input.y:4.13-16: warning: empty character literal
1334 input.y:5.9-16: invalid character after \-escape: \t
1335 input.y:5.17: invalid character after \-escape: \f
1336 input.y:5.18: invalid character after \-escape: \0
1337 input.y:5.19: invalid character after \-escape: \001
1338 ]])
1339
1340 AT_CLEANUP
1341
1342 ## ------------------------- ##
1343 ## LAC: Errors for %define.  ##
1344 ## ------------------------- ##
1345
1346 AT_SETUP([[LAC: Errors for %define]])
1347
1348 AT_DATA([[input.y]],
1349 [[%%
1350 start: ;
1351 ]])
1352
1353 # parse.lac.* options are useless if LAC isn't actually activated.
1354 AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
1355                [[1]], [],
1356 [[<command line>:2: %define variable 'parse.lac.es-capacity-initial' is not used
1357 ]])
1358 AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
1359                [[1]], [],
1360 [[<command line>:2: %define variable 'parse.lac.memory-trace' is not used
1361 ]])
1362
1363 AT_CLEANUP
1364
1365 ## --------------------------------------------- ##
1366 ## -Werror is not affected by -Wnone and -Wall.  ##
1367 ## --------------------------------------------- ##
1368
1369 AT_SETUP([[-Werror is not affected by -Wnone and -Wall]])
1370
1371 AT_DATA([[input.y]],
1372 [[%%
1373 foo-bar: ;
1374 ]])
1375
1376 # -Werror is not enabled by -Wall or equivalent.
1377 AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]],
1378 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1379 ]])
1380 AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
1381 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1382 ]])
1383 AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
1384 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1385 ]])
1386
1387 # -Werror is not disabled by -Wnone or equivalent.
1388 AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]])
1389 AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]],
1390 [[bison: warnings being treated as errors
1391 input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1392 ]])
1393 [mv stderr experr]
1394 AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
1395
1396 AT_CLEANUP
1397
1398
1399 ## ------------------------------------------------------ ##
1400 ## %name-prefix and %define api.prefix are incompatible.  ##
1401 ## ------------------------------------------------------ ##
1402
1403 AT_SETUP([[%name-prefix and %define api.prefix are incompatible]])
1404
1405 # AT_TEST(DIRECTIVES, OPTIONS, ERROR-LOCATION)
1406 # --------------------------------------------
1407 m4_pushdef([AT_TEST],
1408 [AT_DATA([[input.y]],
1409 [[$1
1410 %%
1411 exp:;
1412 ]])
1413 AT_BISON_CHECK([[$2 input.y]], [[1]], [[]],
1414 [[$3: '%name-prefix' and '%define api.prefix' cannot be used together
1415 ]])
1416 ])
1417
1418 AT_TEST([%define api.prefix foo %name-prefix "bar"], [], [input.y:1.9-18])
1419 AT_TEST([], [-Dapi.prefix=foo -p bar], [<command line>:2])
1420 AT_TEST([%name-prefix "bar"], [-Dapi.prefix=foo], [<command line>:2])
1421 AT_TEST([%define api.prefix foo], [-p bar], [input.y:1.9-18])
1422
1423 m4_popdef([AT_TEST])
1424
1425 AT_CLEANUP
1426
1427
1428 ## -------------- ##
1429 ## Stray $ or @.  ##
1430 ## -------------- ##
1431
1432 AT_SETUP([[Stray $ or @]])
1433
1434 # Give %printer and %destructor "<*> exp TOK" instead of "<*>" to
1435 # check that the warnings are reported once, not three times.
1436
1437 AT_DATA_GRAMMAR([[input.y]],
1438 [[%token TOK
1439 %destructor     { $%; @%; } <*> exp TOK;
1440 %initial-action { $%; @%; };
1441 %printer        { $%; @%; } <*> exp TOK;
1442 %%
1443 exp: TOK        { $%; @%; $$ = $1; };
1444 ]])
1445
1446 AT_BISON_CHECK([[input.y]], 0, [],
1447 [[input.y:10.19: warning: stray '$'
1448 input.y:10.23: warning: stray '@'
1449 input.y:11.19: warning: stray '$'
1450 input.y:11.23: warning: stray '@'
1451 input.y:12.19: warning: stray '$'
1452 input.y:12.23: warning: stray '@'
1453 input.y:14.19: warning: stray '$'
1454 input.y:14.23: warning: stray '@'
1455 ]])
1456
1457 AT_CLEANUP
1458
1459
1460
1461 ## ---------------- ##
1462 ## Code injection.  ##
1463 ## ---------------- ##
1464
1465
1466 AT_SETUP([[Code injection]])
1467
1468 m4_pattern_allow([^m4_errprintn$])
1469
1470 # AT_TEST([MACRO])
1471 # ----------------
1472 # Try to have MACRO be run by bison.
1473 m4_pushdef([AT_TEST],
1474 [AT_DATA([[input.y]],
1475 [[%type <$1(DEAD %type)> exp
1476 %token <$1(DEAD %token)> a
1477 %initial-action
1478 {
1479   $$;
1480   $<$1(DEAD %initial-action)>$
1481 };
1482 %printer
1483 {
1484   $$
1485   $<$1(DEAD %printer)>$
1486 } <> <*>;
1487 %lex-param
1488 {
1489   $1(DEAD %lex-param)
1490 };
1491 %parse-param
1492 {
1493   $1(DEAD %parse-param)
1494 };
1495 %%
1496 exp:
1497   a a[last]
1498   {
1499     $$;
1500     $][1;
1501     $<$1(DEAD action 1)>$
1502     $<$1(DEAD action 2)>1
1503     $<$1(DEAD action 3)>last
1504     $<$1(DEAD action 4)>0
1505     ;
1506   };
1507 ]])
1508
1509 # FIXME: Provide a means to iterate over all the skeletons.
1510 AT_BISON_CHECK([[-d               input.y]])
1511 AT_BISON_CHECK([[-d -S glr.c      input.y]])
1512 AT_BISON_CHECK([[-d -S lalr1.cc   input.y]])
1513 AT_BISON_CHECK([[-d -S glr.cc     input.y]])
1514 AT_BISON_CHECK([[   -S lalr1.java input.y]])
1515 ])
1516
1517 AT_TEST([m4_errprintn])
1518 AT_TEST([@:>@m4_errprintn])
1519
1520 m4_popdef([AT_TEST])
1521
1522 AT_CLEANUP