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 [[\000\001\002\377?
  31 %%
  32 ?
  33 default: 'a' }
  34 %&
  35 %a-does-not-exist
  36 %-
  37 %{
  38 ]])
  39 AT_CHECK([[$PERL -pi -e 's/\\(\d{3})/chr(oct($1))/ge' input.y || exit 77]])
  40
  41 AT_BISON_CHECK([input.y], [1], [],
  42 [[input.y:1.1-2: error: invalid characters: '\0\001\002\377?'
  43 input.y:3.1: error: invalid character: '?'
  44 input.y:4.14: error: invalid character: '}'
  45 input.y:5.1: error: invalid character: '%'
  46 input.y:5.2: error: invalid character: '&'
  47 input.y:6.1-17: error: invalid directive: '%a-does-not-exist'
  48 input.y:7.1: error: invalid character: '%'
  49 input.y:7.2: error: invalid character: '-'
  50 input.y:8.1-9.0: error: missing '%}' at end of file
  51 input.y:8.1-9.0: error: syntax error, unexpected %{...%}
  52 ]])
  53
  54 AT_CLEANUP
  55
  56
  57 AT_SETUP([Invalid inputs with {}])
  58
  59 # We used to SEGV here.  See
  60 # http://lists.gnu.org/archive/html/bug-bison/2005-07/msg00053.html
  61
  62 AT_DATA([input.y],
  63 [[
  64 %destructor
  65 %initial-action
  66 %lex-param
  67 %parse-param
  68 %printer
  69 %union
  70 ]])
  71
  72 AT_BISON_CHECK([input.y], [1], [],
  73 [[input.y:3.1-15: error: syntax error, unexpected %initial-action, expecting {...}
  74 ]])
  75
  76 AT_CLEANUP
  77
  78
  79
  80 ## ------------ ##
  81 ## Invalid $n.  ##
  82 ## ------------ ##
  83
  84 AT_SETUP([Invalid $n and @n])
  85
  86 AT_DATA([input.y],
  87 [[%%
  88 exp: { $$ = $1 ; };
  89 exp: { @$ = @1 ; };
  90 ]])
  91
  92 AT_BISON_CHECK([input.y], [1], [],
  93 [[input.y:2.13-14: error: integer out of range: '$1'
  94 input.y:3.13-14: error: integer out of range: '@1'
  95 ]])
  96
  97 AT_CLEANUP
  98
  99
 100 ## -------------- ##
 101 ## Type Clashes.  ##
 102 ## -------------- ##
 103
 104 AT_SETUP([Type Clashes])
 105
 106 AT_DATA([input.y],
 107 [[%union { int bar; }
 108 %token foo
 109 %type <bar> exp
 110 %%
 111 exp: foo { $$; } foo { $2; } foo
 112    | foo
 113    | /* Empty. */
 114    ;
 115 ]])
 116
 117 AT_BISON_CHECK([input.y], [1], [],
 118 [[input.y:5.12-13: error: $$ for the midrule at $2 of 'exp' has no declared type
 119 input.y:5.24-25: error: $2 of 'exp' has no declared type
 120 input.y:5.6-32: warning: type clash on default action: <bar> != <>
 121 input.y:6.6-8: warning: type clash on default action: <bar> != <>
 122 input.y:7.5: warning: empty rule for typed nonterminal, and no action
 123 ]])
 124
 125 AT_CLEANUP
 126
 127
 128 # _AT_UNUSED_VALUES_DECLARATIONS()
 129 # --------------------------------
 130 # Generate the token, type, and destructor
 131 # declarations for the unused values tests.
 132
 133 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
 134 [[[%token <integer> INT;
 135 %type <integer> a b c d e f g h i j k l;
 136 %destructor { destroy ($$); } INT a b c d e f g h i j k l;]]])
 137
 138
 139 # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
 140 # ------------------------------------------------------------------
 141 # Generate a grammar to test unused values,
 142 # compile it, run it.  If DECLARATIONS_AFTER
 143 # is set, then the token, type, and destructor
 144 # declarations are generated after the rules
 145 # rather than before.  If CHECK_MIDRULE_VALUES
 146 # is set, then --warnings=midrule-values is
 147 # set.
 148
 149 m4_define([AT_CHECK_UNUSED_VALUES],
 150 [AT_DATA([input.y],
 151 m4_ifval($1, [
 152
 153
 154 ], [_AT_UNUSED_VALUES_DECLARATIONS
 155 ])[[%%
 156 start:
 157   'a' a { $]2[; } | 'b' b { $]2[; } | 'c' c { $]2[; } | 'd' d { $]2[; }
 158 | 'e' e { $]2[; } | 'f' f { $]2[; } | 'g' g { $]2[; } | 'h' h { $]2[; }
 159 | 'i' i { $]2[; } | 'j' j { $]2[; } | 'k' k { $]2[; } | 'l' l { $]2[; }
 160 ;
 161
 162 a: INT | INT { } INT { } INT { };
 163 b: INT | /* empty */;
 164 c: INT | INT { $]1[; } INT { $<integer>2; } INT { $<integer>4; };
 165 d: INT | INT { } INT { $]1[; } INT { $<integer>2; };
 166 e: INT | INT { } INT {  } INT { $]1[; };
 167 f: INT | INT { } INT {  } INT { $]$[ = $]1[ + $]3[ + $]5[; };
 168 g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
 169 h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
 170 i: INT | INT INT { } { $]$[ = $]1[ + $]2[; };
 171 j: INT | INT INT { $<integer>$ = 1; } { $]$[ = $]1[ + $]2[; };
 172 k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
 173 l: INT | INT { $<integer>$ = $<integer>1; } INT { $<integer>$ = $<integer>2 + $<integer>3; } INT { $<integer>$ = $<integer>4 + $<integer>5; };]]m4_ifval($1, [
 174 _AT_UNUSED_VALUES_DECLARATIONS])
 175 )
 176
 177 AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
 178 [[input.y:11.10-32: warning: unset value: $]$[
 179 input.y:11.10-32: warning: unused value: $]1[
 180 input.y:11.10-32: warning: unused value: $]3[
 181 input.y:11.10-32: warning: unused value: $]5[
 182 input.y:12.9: warning: empty rule for typed nonterminal, and no action
 183 ]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$
 184 input.y:13.26-41: warning: unset value: $$
 185 ]]])[[input.y:13.10-62: warning: unset value: $]$[
 186 input.y:13.10-62: warning: unused value: $]3[
 187 input.y:13.10-62: warning: unused value: $]5[
 188 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
 189 ]]])[[input.y:14.10-49: warning: unset value: $]$[
 190 input.y:14.10-49: warning: unused value: $]3[
 191 input.y:14.10-49: warning: unused value: $]5[
 192 input.y:15.10-37: warning: unset value: $]$[
 193 input.y:15.10-37: warning: unused value: $]3[
 194 input.y:15.10-37: warning: unused value: $]5[
 195 input.y:17.10-58: warning: unset value: $]$[
 196 input.y:17.10-58: warning: unused value: $]1[
 197 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
 198 ]]])[[input.y:17.10-58: warning: unused value: $]3[
 199 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[
 200 ]]])[[input.y:17.10-58: warning: unused value: $]5[
 201 input.y:18.10-72: warning: unset value: $]$[
 202 input.y:18.10-72: warning: unused value: $]1[
 203 input.y:18.10-72: warning: unused value: $]3[
 204 ]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[
 205 ]]])[[input.y:18.10-72: warning: unused value: $]5[
 206 ]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[
 207 ]]])[[input.y:21.10-68: warning: unset value: $]$[
 208 input.y:21.10-68: warning: unused value: $]1[
 209 input.y:21.10-68: warning: unused value: $]2[
 210 ]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[
 211 ]]]))])
 212
 213
 214 ## --------------- ##
 215 ## Unused values.  ##
 216 ## --------------- ##
 217
 218 AT_SETUP([Unused values])
 219 AT_CHECK_UNUSED_VALUES
 220 AT_CHECK_UNUSED_VALUES(, [1])
 221 AT_CLEANUP
 222
 223
 224 ## ------------------------------------------ ##
 225 ## Unused values before symbol declarations.  ##
 226 ## ------------------------------------------ ##
 227
 228 AT_SETUP([Unused values before symbol declarations])
 229 AT_CHECK_UNUSED_VALUES([1])
 230 AT_CHECK_UNUSED_VALUES([1], [1])
 231 AT_CLEANUP
 232
 233
 234 ## --------------------------------------------- ##
 235 ## Default %printer and %destructor redeclared.  ##
 236 ## --------------------------------------------- ##
 237
 238 AT_SETUP([Default %printer and %destructor redeclared])
 239
 240 AT_DATA([[input.y]],
 241 [[%destructor { destroy ($$); } <*> <*>
 242 %printer { print ($$); } <*> <*>
 243
 244 %destructor { destroy ($$); } <*>
 245 %printer { print ($$); } <*>
 246
 247 %destructor { destroy ($$); } <> <>
 248 %printer { print ($$); } <> <>
 249
 250 %destructor { destroy ($$); } <>
 251 %printer { print ($$); } <>
 252
 253 %%
 254
 255 start: ;
 256
 257 %destructor { destroy ($$); } <*>;
 258 %printer { print ($$); } <*>;
 259
 260 %destructor { destroy ($$); } <>;
 261 %printer { print ($$); } <>;
 262 ]])
 263
 264 AT_BISON_CHECK([input.y], [1], [],
 265 [[input.y:1.13-29: error: redeclaration for default tagged %destructor
 266 input.y:1.13-29:     previous declaration
 267 input.y:2.10-24: error: redeclaration for default tagged %printer
 268 input.y:2.10-24:     previous declaration
 269 input.y:4.13-29: error: redeclaration for default tagged %destructor
 270 input.y:1.13-29:     previous declaration
 271 input.y:5.10-24: error: redeclaration for default tagged %printer
 272 input.y:2.10-24:     previous declaration
 273 input.y:7.13-29: error: redeclaration for default tagless %destructor
 274 input.y:7.13-29:     previous declaration
 275 input.y:8.10-24: error: redeclaration for default tagless %printer
 276 input.y:8.10-24:     previous declaration
 277 input.y:10.13-29: error: redeclaration for default tagless %destructor
 278 input.y:7.13-29:      previous declaration
 279 input.y:11.10-24: error: redeclaration for default tagless %printer
 280 input.y:8.10-24:      previous declaration
 281 input.y:17.13-29: error: redeclaration for default tagged %destructor
 282 input.y:4.13-29:      previous declaration
 283 input.y:18.10-24: error: redeclaration for default tagged %printer
 284 input.y:5.10-24:      previous declaration
 285 input.y:20.13-29: error: redeclaration for default tagless %destructor
 286 input.y:10.13-29:     previous declaration
 287 input.y:21.10-24: error: redeclaration for default tagless %printer
 288 input.y:11.10-24:     previous declaration
 289 ]])
 290
 291 AT_CLEANUP
 292
 293
 294 ## ---------------------------------------------- ##
 295 ## Per-type %printer and %destructor redeclared.  ##
 296 ## ---------------------------------------------- ##
 297
 298 AT_SETUP([Per-type %printer and %destructor redeclared])
 299
 300 AT_DATA([[input.y]],
 301 [[%destructor { destroy ($$); } <field1> <field2>
 302 %printer { print ($$); } <field1> <field2>
 303
 304 %destructor { destroy ($$); } <field1> <field1>
 305 %printer { print ($$); } <field2> <field2>
 306
 307 %%
 308
 309 start: ;
 310
 311 %destructor { destroy ($$); } <field2> <field1>;
 312 %printer { print ($$); } <field2> <field1>;
 313 ]])
 314
 315 AT_BISON_CHECK([input.y], [1], [],
 316 [[input.y:4.13-29: error: %destructor redeclaration for <field1>
 317 input.y:1.13-29:     previous declaration
 318 input.y:4.13-29: error: %destructor redeclaration for <field1>
 319 input.y:4.13-29:     previous declaration
 320 input.y:5.10-24: error: %printer redeclaration for <field2>
 321 input.y:2.10-24:     previous declaration
 322 input.y:5.10-24: error: %printer redeclaration for <field2>
 323 input.y:5.10-24:     previous declaration
 324 input.y:11.13-29: error: %destructor redeclaration for <field1>
 325 input.y:4.13-29:      previous declaration
 326 input.y:11.13-29: error: %destructor redeclaration for <field2>
 327 input.y:1.13-29:      previous declaration
 328 input.y:12.10-24: error: %printer redeclaration for <field1>
 329 input.y:2.10-24:      previous declaration
 330 input.y:12.10-24: error: %printer redeclaration for <field2>
 331 input.y:5.10-24:      previous declaration
 332 ]])
 333
 334 AT_CLEANUP
 335
 336
 337 ## ---------------------------------------- ##
 338 ## Unused values with default %destructor.  ##
 339 ## ---------------------------------------- ##
 340
 341 AT_SETUP([Unused values with default %destructor])
 342
 343 AT_DATA([[input.y]],
 344 [[%destructor { destroy ($$); } <>
 345 %type <tag> tagged
 346
 347 %%
 348
 349 start: end end tagged tagged { $<tag>1; $3; } ;
 350 end: { } ;
 351 tagged: { } ;
 352 ]])
 353
 354 AT_BISON_CHECK([input.y], [0], [],
 355 [[input.y:6.8-45: warning: unset value: $$
 356 input.y:6.8-45: warning: unused value: $2
 357 input.y:7.6-8: warning: unset value: $$
 358 ]])
 359
 360 AT_DATA([[input.y]],
 361 [[%destructor { destroy ($$); } <*>
 362 %type <tag> tagged
 363
 364 %%
 365
 366 start: end end tagged tagged { $<tag>1; $3; } ;
 367 end: { } ;
 368 tagged: { } ;
 369 ]])
 370
 371 AT_BISON_CHECK([input.y], [0], [],
 372 [[input.y:6.8-45: warning: unused value: $4
 373 input.y:8.9-11: warning: unset value: $$
 374 ]])
 375
 376 AT_CLEANUP
 377
 378
 379 ## ----------------------------------------- ##
 380 ## Unused values with per-type %destructor.  ##
 381 ## ----------------------------------------- ##
 382
 383 AT_SETUP([Unused values with per-type %destructor])
 384
 385 AT_DATA([[input.y]],
 386 [[%destructor { destroy ($$); } <field1>
 387 %type <field1> start end
 388
 389 %%
 390
 391 start: end end { $1; } ;
 392 end: { }  ;
 393 ]])
 394
 395 AT_BISON_CHECK([input.y], [0], [],
 396 [[input.y:6.8-22: warning: unset value: $$
 397 input.y:6.8-22: warning: unused value: $2
 398 input.y:7.6-8: warning: unset value: $$
 399 ]])
 400
 401 AT_CLEANUP
 402
 403
 404 ## ---------------------- ##
 405 ## Incompatible Aliases.  ##
 406 ## ---------------------- ##
 407
 408 AT_SETUP([Incompatible Aliases])
 409
 410 AT_DATA([input.y],
 411 [[%token foo "foo"
 412
 413 %type <bar>       foo
 414 %printer {bar}    foo
 415 %destructor {bar} foo
 416 %left             foo
 417
 418 %type <baz>       "foo"
 419 %printer {baz}    "foo"
 420 %destructor {baz} "foo"
 421 %left             "foo"
 422
 423 %%
 424 exp: foo;
 425 ]])
 426
 427 AT_BISON_CHECK([input.y], [1], [],
 428 [[input.y:8.7-11: error: %type redeclaration for foo
 429 input.y:3.7-11:     previous declaration
 430 input.y:10.13-17: error: %destructor redeclaration for foo
 431 input.y:5.13-17:      previous declaration
 432 input.y:9.10-14: error: %printer redeclaration for foo
 433 input.y:4.10-14:     previous declaration
 434 input.y:11.1-5: error: %left redeclaration for foo
 435 input.y:6.1-5:      previous declaration
 436 ]])
 437
 438 AT_CLEANUP
 439
 440
 441
 442 ## ----------------------- ##
 443 ## Torturing the Scanner.  ##
 444 ## ----------------------- ##
 445
 446 # Be sure to compile and run, so that the C compiler checks what
 447 # we do.
 448
 449 AT_SETUP([Torturing the Scanner])
 450
 451 AT_BISON_OPTION_PUSHDEFS
 452 AT_DATA([input.y], [])
 453 AT_BISON_CHECK([input.y], [1], [],
 454 [[input.y:1.1: error: syntax error, unexpected end of file
 455 ]])
 456
 457
 458 AT_DATA([input.y],
 459 [{}
 460 ])
 461 AT_BISON_CHECK([input.y], [1], [],
 462 [[input.y:1.1-2: error: syntax error, unexpected {...}
 463 ]])
 464
 465
 466 AT_DATA_GRAMMAR([input.y],
 467 [[%{
 468 /* This is seen in GCC: a %{ and %} in middle of a comment. */
 469 const char *foo = "So %{ and %} can be here too.";
 470
 471 #if 0
 472 /* These examples test Bison while not stressing C compilers too much.
 473    Many C compilers mishandle backslash-newlines, so this part of the
 474    test is inside "#if 0".  The comment and string are written so that
 475    the "#endif" will be seen regardless of the C compiler bugs that we
 476    know about, namely:
 477
 478      HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
 479      comment.
 480
 481      The Apple Darwin compiler (as of late 2002) mishandles
 482      \\[newline]' within a character constant.
 483
 484    */
 485
 486 /\
 487 * A comment with backslash-newlines in it. %} *\
 488 \
 489 /
 490 /* { Close the above comment, if the C compiler mishandled it.  */
 491
 492 char str[] = "\\
 493 " A string with backslash-newlines in it %{ %} \\
 494 \
 495 "";
 496
 497 char apostrophe = '\'';
 498 #endif
 499
 500 #include <stdio.h>
 501 #include <stdlib.h>
 502 #include <assert.h>
 503 %}
 504 /* %{ and %} can be here too. */
 505
 506 %{
 507 /* Exercise pre-prologue dependency to %union.  */
 508 typedef int value;
 509 %}
 510
 511 /* Exercise M4 quoting: '@:>@@:>@', 0.  */
 512
 513 /* Also exercise %union. */
 514 %union
 515 {
 516   value ival; /* A comment to exercise an old bug. */
 517 };
 518
 519
 520 /* Exercise post-prologue dependency to %union.  */
 521 %{
 522 static YYSTYPE value_as_yystype (value val);
 523
 524 /* Exercise quotes in declarations.  */
 525 char quote[] = "@:>@@:>@,";
 526 %}
 527
 528 %{
 529 ]AT_YYERROR_DECLARE[
 530 ]AT_YYLEX_DECLARE[
 531 %}
 532
 533 %type <ival> '@<:@'
 534
 535 /* Exercise quotes in strings.  */
 536 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
 537
 538 %%
 539 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1.  */
 540 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
 541   {
 542     /* Exercise quotes in braces.  */
 543     char tmp[] = "@<:@%c@:>@,\n";
 544     printf (tmp, $1);
 545   }
 546 ;
 547
 548 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
 549 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
 550 output.or.oline.opt: ;|oline;;|output;;;
 551 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
 552 %%
 553 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2.  */
 554
 555 static YYSTYPE
 556 value_as_yystype (value val)
 557 {
 558   YYSTYPE res;
 559   res.ival = val;
 560   return res;
 561 }
 562 ]AT_YYERROR_DEFINE[
 563 static int
 564 yylex (void)
 565 {
 566   static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
 567 #output "; /* "
 568   */
 569   static size_t toknum;
 570   assert (toknum < sizeof input);
 571   yylval = value_as_yystype (input[toknum]);
 572   return input[toknum++];
 573 }
 574 ]])
 575
 576 # Pacify Emacs' font-lock-mode: "
 577
 578 AT_DATA([main.c],
 579 [[typedef int value;
 580 #include "input.h"
 581
 582 int yyparse (void);
 583
 584 int
 585 main (void)
 586 {
 587   return yyparse ();
 588 }
 589 ]])
 590 AT_BISON_OPTION_POPDEFS
 591
 592 AT_BISON_CHECK([-d -v -o input.c input.y])
 593 AT_COMPILE([input.o])
 594 AT_COMPILE([main.o])
 595 AT_COMPILE([input], [input.o main.o])
 596 AT_PARSER_CHECK([./input], 0,
 597 [[[@<:@],
 598 ]])
 599
 600 AT_CLEANUP
 601
 602
 603 ## ---------------------- ##
 604 ## Typed symbol aliases.  ##
 605 ## ---------------------- ##
 606
 607 AT_SETUP([Typed symbol aliases])
 608
 609 # Bison 2.0 broke typed symbol aliases - ensure they work.
 610
 611 AT_DATA_GRAMMAR([input.y],
 612 [[%union
 613 {
 614   int val;
 615 };
 616 %token <val> MY_TOKEN "MY TOKEN"
 617 %type <val> exp
 618 %%
 619 exp: "MY TOKEN";
 620 %%
 621 ]])
 622
 623 AT_BISON_CHECK([-o input.c input.y])
 624
 625 AT_CLEANUP
 626
 627
 628 ## --------- ##
 629 ## Require.  ##
 630 ## --------- ##
 631
 632 m4_define([AT_CHECK_REQUIRE],
 633 [AT_SETUP([Require $1])
 634 AT_DATA_GRAMMAR([input.y],
 635 [[%require "$1";
 636 %%
 637 empty_file:;
 638 ]])
 639 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
 640 AT_CLEANUP
 641 ])
 642
 643 AT_CHECK_REQUIRE(1.0, 0)
 644 AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
 645 ## FIXME: Some day augment this version number.
 646 AT_CHECK_REQUIRE(100.0, 63)
 647
 648
 649 ## ------------------------------------- ##
 650 ## String aliases for character tokens.  ##
 651 ## ------------------------------------- ##
 652
 653 AT_SETUP([String aliases for character tokens])
 654
 655 # Bison once thought a character token and its alias were different symbols
 656 # with the same user token number.
 657
 658 AT_DATA_GRAMMAR([input.y],
 659 [[%token 'a' "a"
 660 %%
 661 start: 'a';
 662 %%
 663 ]])
 664
 665 AT_BISON_CHECK([-o input.c input.y])
 666
 667 AT_CLEANUP
 668
 669
 670 ## -------------- ##
 671 ## Symbol names.  ##
 672 ## -------------- ##
 673
 674 AT_SETUP([Symbols])
 675
 676 AT_BISON_OPTION_PUSHDEFS
 677 AT_DATA_GRAMMAR([input.y],
 678 [[%token WITH-DASH
 679 %token WITHOUT_DASH "WITHOUT-DASH"
 680 %token WITH.PERIOD
 681 %token WITHOUT_PERIOD "WITHOUT.PERIOD"
 682 %code {
 683   ]AT_YYERROR_DECLARE[
 684   ]AT_YYLEX_DECLARE[
 685 }
 686 %%
 687 start: with-dash without_dash with.period without_period;
 688 with-dash: WITH-DASH;
 689 without_dash: "WITHOUT-DASH";
 690 with.period: WITH.PERIOD;
 691 without_period: "WITHOUT.PERIOD";
 692 %%
 693 ]AT_YYERROR_DEFINE[
 694 ]AT_YYLEX_DEFINE[
 695 ]])
 696 AT_BISON_OPTION_POPDEFS
 697
 698 # POSIX Yacc accept periods, but not dashes.
 699 AT_BISON_CHECK([--yacc input.y], [1], [],
 700 [[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH
 701 input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash
 702 ]])
 703
 704 # So warn about them.
 705 AT_BISON_CHECK([-Wyacc input.y], [], [],
 706 [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH
 707 input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash
 708 ]])
 709
 710 # Dashes are fine for GNU Bison.
 711 AT_BISON_CHECK([-o input.c input.y])
 712
 713 # Make sure we don't export silly token identifiers with periods or dashes.
 714 AT_COMPILE([input.o])
 715
 716
 717 # Periods are genuine letters, they can start identifiers.
 718 # Digits and dashes cannot.
 719 AT_DATA_GRAMMAR([input.y],
 720 [[%token .GOOD
 721          -GOOD
 722          1NV4L1D
 723          -123
 724 %%
 725 start: .GOOD GOOD
 726 ]])
 727 AT_BISON_CHECK([-o input.c input.y], [1], [],
 728 [[input.y:10.10: error: invalid character: '-'
 729 input.y:11.10-16: error: invalid identifier: '1NV4L1D'
 730 input.y:12.10: error: invalid character: '-'
 731 ]])
 732
 733 AT_CLEANUP
 734
 735
 736 ## ----------------- ##
 737 ## Numbered tokens.  ##
 738 ## ----------------- ##
 739
 740 AT_SETUP([Numbered tokens])
 741
 742 AT_DATA_GRAMMAR([redecl.y],
 743 [[%token DECIMAL_1     11259375
 744          HEXADECIMAL_1 0xabcdef
 745          HEXADECIMAL_2 0xFEDCBA
 746          DECIMAL_2     16702650
 747 %%
 748 start: DECIMAL_1 HEXADECIMAL_2;
 749 ]])
 750
 751 AT_BISON_CHECK([redecl.y], [1], [],
 752 [[redecl.y:10.10-22: error: user token number 11259375 redeclaration for HEXADECIMAL_1
 753 redecl.y:9.8-16:       previous declaration for DECIMAL_1
 754 redecl.y:12.10-18: error: user token number 16702650 redeclaration for DECIMAL_2
 755 redecl.y:11.10-22:     previous declaration for HEXADECIMAL_2
 756 ]])
 757
 758 AT_DATA_GRAMMAR([too-large.y],
 759 [[%token TOO_LARGE_DEC 999999999999999999999
 760          TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
 761 %%
 762 start: TOO_LARGE_DEC TOO_LARGE_HEX
 763 %%
 764 ]])
 765
 766 AT_BISON_CHECK([too-large.y], [1], [],
 767 [[too-large.y:9.22-42: error: integer out of range: '999999999999999999999'
 768 too-large.y:10.24-44: error: integer out of range: '0xFFFFFFFFFFFFFFFFFFF'
 769 ]])
 770
 771 AT_CLEANUP
 772
 773
 774 ## --------------------- ##
 775 ## Unclosed constructs.  ##
 776 ## --------------------- ##
 777
 778 AT_SETUP([Unclosed constructs])
 779
 780 # Bison's scan-gram.l once forgot to STRING_FINISH some unclosed constructs, so
 781 # they were prepended to whatever it STRING_GROW'ed next.  It also threw them
 782 # away rather than returning them to the parser.  The effect was confusing
 783 # subsequent error messages.
 784
 785 AT_DATA([input.y],
 786 [[%token A "a
 787 %token B "b"
 788 %token AB "ab" // Used to complain that "ab" was already used.
 789 %token C '1
 790 %token TWO "2"
 791 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
 792
 793 %%
 794
 795 start: ;
 796
 797 // Used to report a syntax error because it didn't see any kind of symbol
 798 // identifier.
 799 %type <f> 'a
 800 ;
 801 %type <f> "a
 802 ;
 803 // Used to report a syntax error because it didn't see braced code.
 804 %destructor { free ($$)
 805 ]])
 806
 807 AT_BISON_CHECK([-o input.c input.y], 1, [],
 808 [[input.y:1.10-2.0: error: missing '"' at end of line
 809 input.y:4.10-5.0: error: missing "'" at end of line
 810 input.y:14.11-15.0: error: missing "'" at end of line
 811 input.y:16.11-17.0: error: missing '"' at end of line
 812 input.y:19.13-20.0: error: missing '}' at end of file
 813 input.y:20.1: error: syntax error, unexpected end of file
 814 ]])
 815
 816 AT_BISON_CHECK([-fcaret -o input.c input.y], 1, [],
 817 [[input.y:1.10-2.0: error: missing '"' at end of line
 818  %token A "a
 819           ^^
 820 input.y:4.10-5.0: error: missing "'" at end of line
 821  %token C '1
 822           ^^
 823 input.y:14.11-15.0: error: missing "'" at end of line
 824  %type <f> 'a
 825            ^^
 826 input.y:16.11-17.0: error: missing '"' at end of line
 827  %type <f> "a
 828            ^^
 829 input.y:19.13-20.0: error: missing '}' at end of file
 830  %destructor { free ($$)
 831              ^^^^^^^^^^^
 832 input.y:20.1: error: syntax error, unexpected end of file
 833 ]])
 834
 835 AT_CLEANUP
 836
 837
 838 ## ------------------------- ##
 839 ## %start after first rule.  ##
 840 ## ------------------------- ##
 841
 842 AT_SETUP([%start after first rule])
 843
 844 # Bison once complained that a %start after the first rule was a redeclaration
 845 # of the start symbol.
 846
 847 AT_DATA([input.y],
 848 [[%%
 849 false_start: ;
 850 start: false_start ;
 851 %start start;
 852 ]])
 853
 854 AT_BISON_CHECK([-o input.c input.y])
 855
 856 AT_CLEANUP
 857
 858
 859 ## --------------------- ##
 860 ## %prec takes a token.  ##
 861 ## --------------------- ##
 862
 863 AT_SETUP([%prec takes a token])
 864
 865 # Bison once allowed %prec sym where sym was a nonterminal.
 866
 867 AT_DATA([input.y],
 868 [[%%
 869 start: PREC %prec PREC ;
 870 PREC: ;
 871 ]])
 872
 873 AT_BISON_CHECK([input.y], [1], [],
 874 [[input.y:3.1-4: error: rule given for PREC, which is a token
 875 ]])
 876
 877 AT_CLEANUP
 878
 879
 880 ## ------------------------------- ##
 881 ## %prec's token must be defined.  ##
 882 ## ------------------------------- ##
 883
 884 AT_SETUP([[%prec's token must be defined]])
 885
 886 # According to POSIX, a %prec token must be defined separately.
 887
 888 AT_DATA([[input.y]],
 889 [[%%
 890 start: %prec PREC ;
 891 ]])
 892
 893 AT_BISON_CHECK([[input.y]], [[0]], [],
 894 [[input.y:2.8-17: warning: token for %prec is not defined: PREC
 895 ]])
 896
 897 AT_CLEANUP
 898
 899
 900 ## -------------------------------- ##
 901 ## Reject unused %code qualifiers.  ##
 902 ## -------------------------------- ##
 903
 904 AT_SETUP([Reject unused %code qualifiers])
 905
 906 AT_DATA([input-c.y],
 907 [[%code q {}
 908 %code bad {}
 909 %code bad {}
 910 %code format {}
 911 %%
 912 start: ;
 913 ]])
 914 AT_BISON_CHECK([[input-c.y]], [[1]], [],
 915 [[input-c.y:1.7: error: %code qualifier 'q' is not used
 916 input-c.y:2.7-9: error: %code qualifier 'bad' is not used
 917 input-c.y:3.7-9: error: %code qualifier 'bad' is not used
 918 input-c.y:4.7-12: error: %code qualifier 'format' is not used
 919 ]])
 920
 921 AT_DATA([input-c-glr.y],
 922 [[%code q {}
 923 %code bad {}
 924  %code bad {}
 925 %%
 926 start: ;
 927 ]])
 928 AT_BISON_CHECK([[input-c-glr.y]], [[1]], [],
 929 [[input-c-glr.y:1.7: error: %code qualifier 'q' is not used
 930 input-c-glr.y:2.7-9: error: %code qualifier 'bad' is not used
 931 input-c-glr.y:3.8-10: error: %code qualifier 'bad' is not used
 932 ]])
 933
 934 AT_DATA([input-c++.y],
 935 [[%code q {}
 936 %code bad {}
 937  %code q {}
 938 %%
 939 start: ;
 940 ]])
 941 AT_BISON_CHECK([[input-c++.y]], [[1]], [],
 942 [[input-c++.y:1.7: error: %code qualifier 'q' is not used
 943 input-c++.y:2.7-9: error: %code qualifier 'bad' is not used
 944 input-c++.y:3.8: error: %code qualifier 'q' is not used
 945 ]])
 946
 947 AT_DATA([input-c++-glr.y],
 948 [[%code bad {}
 949 %code q {}
 950 %code q {}
 951 %%
 952 start: ;
 953 ]])
 954 AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [],
 955 [[input-c++-glr.y:1.7-9: error: %code qualifier 'bad' is not used
 956 input-c++-glr.y:2.7: error: %code qualifier 'q' is not used
 957 input-c++-glr.y:3.7: error: %code qualifier 'q' is not used
 958 ]])
 959
 960 AT_DATA([special-char-@@.y],
 961 [[%code bad {}
 962 %code q {}
 963 %code q {}
 964 %%
 965 start: ;
 966 ]])
 967 AT_BISON_CHECK([[special-char-@@.y]], [[1]], [],
 968 [[special-char-@@.y:1.7-9: error: %code qualifier 'bad' is not used
 969 special-char-@@.y:2.7: error: %code qualifier 'q' is not used
 970 special-char-@@.y:3.7: error: %code qualifier 'q' is not used
 971 ]])
 972
 973 AT_DATA([special-char-@:>@.y],
 974 [[%code bad {}
 975 %code q {}
 976 %code q {}
 977 %%
 978 start: ;
 979 ]])
 980 AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [],
 981 [[special-char-@:>@.y:1.7-9: error: %code qualifier 'bad' is not used
 982 special-char-@:>@.y:2.7: error: %code qualifier 'q' is not used
 983 special-char-@:>@.y:3.7: error: %code qualifier 'q' is not used
 984 ]])
 985
 986 AT_CLEANUP
 987
 988
 989 ## ---------------- ##
 990 ## %define errors.  ##
 991 ## ---------------- ##
 992
 993 AT_SETUP([%define errors])
 994
 995 AT_DATA([input-redefined.y],
 996 [[%define var "value1"
 997 %define var "value1"
 998  %define var "value2"
 999 %define special1 "@:>@"
1000 %define special2 "@<:@"
1001 %%
1002 start: ;
1003 ]])
1004
1005 AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
1006 [[input-redefined.y:2.9-11: error: %define variable 'var' redefined
1007 input-redefined.y:1.9-11:     previous definition
1008 input-redefined.y:3.10-12: error: %define variable 'var' redefined
1009 input-redefined.y:2.9-11:      previous definition
1010 ]])
1011
1012 AT_DATA([input-unused.y],
1013 [[%define var "value"
1014 %%
1015 start: ;
1016 ]])
1017
1018 AT_BISON_CHECK([[input-unused.y]], [[1]], [],
1019 [[input-unused.y:1.9-11: error: %define variable 'var' is not used
1020 ]])
1021
1022 AT_CLEANUP
1023
1024
1025 ## ----------------------------------- ##
1026 ## %define, --define, --force-define.  ##
1027 ## ----------------------------------- ##
1028
1029 AT_SETUP([[%define, --define, --force-define]])
1030
1031 AT_DATA([[skel.c]],
1032 [[m4@&t@_divert_push(0)@
1033 @output(b4_parser_file_name@)@
1034 [var-dd: ]b4_percent_define_get([[var-dd]])[
1035 var-ff: ]b4_percent_define_get([[var-ff]])[
1036 var-dfg: ]b4_percent_define_get([[var-dfg]])[
1037 var-fd: ]b4_percent_define_get([[var-fd]])
1038 m4@&t@_divert_pop(0)
1039 ]])
1040 AT_DATA([[input.y]],
1041 [[%define var-dfg "gram"
1042 %%
1043 start: ;
1044 ]])
1045 AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
1046                  -Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
1047                  -Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \
1048                  -Fvar-fd=cmd-f -Dvar-fd=cmd-d   \
1049                  --skeleton ./skel.c input.y]])
1050 AT_CHECK([[cat input.tab.c]], [[0]],
1051 [[var-dd: cmd-d2
1052 var-ff: cmd-f2
1053 var-dfg: cmd-f
1054 var-fd: cmd-d
1055 ]])
1056
1057 AT_DATA([[input-dg.y]],
1058 [[%define var "gram"
1059 %%
1060 start: ;
1061 ]])
1062 AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
1063 [[input-dg.y:1.9-11: error: %define variable 'var' redefined
1064 <command line>:1:      previous definition
1065 ]])
1066
1067 AT_DATA([[input-dg.y]],
1068 [[%define var "gram"
1069 %%
1070 start: ;
1071 ]])
1072 AT_BISON_CHECK([[-fcaret -Dvar=cmd-d input-dg.y]], [[1]], [],
1073 [[input-dg.y:1.9-11: error: %define variable 'var' redefined
1074  %define var "gram"
1075          ^^^
1076 <command line>:2:      previous definition
1077 ]])
1078
1079 AT_DATA([[input-unused.y]],
1080 [[%%
1081 start: ;
1082 ]])
1083 AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [],
1084 [[<command line>:1: error: %define variable 'unused-d' is not used
1085 <command line>:2: error: %define variable 'unused-f' is not used
1086 ]])
1087
1088 AT_CLEANUP
1089
1090 ## --------------------------- ##
1091 ## %define Boolean variables.  ##
1092 ## --------------------------- ##
1093
1094 AT_SETUP([[%define Boolean variables]])
1095
1096 AT_DATA([Input.y],
1097 [[%language "Java"
1098 %define public "maybe"
1099 %define parser_class_name "Input"
1100 %%
1101 start: ;
1102 ]])
1103
1104 AT_BISON_CHECK([[Input.y]], [1], [],
1105 [[Input.y:2.9-14: error: invalid value for %define Boolean variable 'public'
1106 ]])
1107
1108 AT_CLEANUP
1109
1110 ## ------------------------ ##
1111 ## %define enum variables.  ##
1112 ## ------------------------ ##
1113
1114 AT_SETUP([[%define enum variables]])
1115
1116 # Front-end.
1117 AT_DATA([[input.y]],
1118 [[%define lr.default-reductions bogus
1119 %%
1120 start: ;
1121 ]])
1122 AT_BISON_CHECK([[input.y]], [[1]], [[]],
1123 [[input.y:1.9-29: error: invalid value for %define variable 'lr.default-reductions': 'bogus'
1124 input.y:1.9-29:     accepted value: 'most'
1125 input.y:1.9-29:     accepted value: 'consistent'
1126 input.y:1.9-29:     accepted value: 'accepting'
1127 ]])
1128
1129 # Back-end.
1130 # FIXME: these should be indented, but we shouldn't mess with the m4 yet
1131 AT_DATA([[input.y]],
1132 [[%define api.push-pull neither
1133 %%
1134 start: ;
1135 ]])
1136 AT_BISON_CHECK([[input.y]], [1], [],
1137 [[input.y:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither'
1138 input.y:1.9-21: error: accepted value: 'pull'
1139 input.y:1.9-21: error: accepted value: 'push'
1140 input.y:1.9-21: error: accepted value: 'both'
1141 ]])
1142
1143 AT_CLEANUP
1144
1145 ## -------------------------------- ##
1146 ## %define backward compatibility.  ##
1147 ## -------------------------------- ##
1148
1149 AT_SETUP([[%define backward compatibility]])
1150
1151 # The error messages tell us whether underscores in these variables are
1152 # being converted to dashes.
1153
1154 AT_DATA([[input.y]],
1155 [[%define api.push_pull "neither"
1156 %%
1157 start: ;
1158 ]])
1159 AT_BISON_CHECK([[input.y]], [1], [],
1160 [[input.y:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither'
1161 input.y:1.9-21: error: accepted value: 'pull'
1162 input.y:1.9-21: error: accepted value: 'push'
1163 input.y:1.9-21: error: accepted value: 'both'
1164 ]])
1165
1166 AT_DATA([[input.y]],
1167 [[%define lr.keep_unreachable_states maybe
1168 %%
1169 start: ;
1170 ]])
1171 AT_BISON_CHECK([[input.y]], [1], [],
1172 [[input.y:1.9-34: error: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
1173 ]])
1174
1175 AT_DATA([[input.y]],
1176 [[%define foo_bar "baz"
1177 %%
1178 start: ;
1179 ]])
1180 AT_BISON_CHECK([[input.y]], [[1]], [],
1181 [[input.y:1.9-15: error: %define variable 'foo_bar' is not used
1182 ]])
1183
1184 AT_CLEANUP
1185
1186 ## ------------------------- ##
1187 ## Unused %define api.pure.  ##
1188 ## ------------------------- ##
1189
1190 AT_SETUP([[Unused %define api.pure]])
1191
1192 # AT_CHECK_API_PURE(DECLS, VALUE)
1193 # -------------------------------
1194 # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
1195 # are specified.
1196 m4_define([AT_CHECK_API_PURE],
1197 [
1198 AT_DATA([[input.y]],
1199 [[%define api.pure ]$2[
1200 ]$1[
1201 %%
1202 start: ;
1203 ]])
1204
1205 AT_BISON_CHECK([[input.y]], [[1]], [],
1206 [[input.y:1.9-16: error: %define variable 'api.pure' is not used
1207 ]])
1208 ])
1209
1210 AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
1211 AT_CHECK_API_PURE([[%language "c++" %defines]], [[false]])
1212 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
1213 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[false]])
1214 AT_CHECK_API_PURE([[%language "java"]], [[true]])
1215 AT_CHECK_API_PURE([[%language "java"]], [[false]])
1216
1217 AT_CLEANUP
1218
1219 ## -------------------------------- ##
1220 ## C++ namespace reference errors.  ##
1221 ## -------------------------------- ##
1222
1223 AT_SETUP([[C++ namespace reference errors]])
1224
1225 # AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
1226 # -------------------------------------------------------------
1227 # Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
1228 m4_define([AT_CHECK_NAMESPACE_ERROR],
1229 [
1230 AT_DATA([[input.y]],
1231 [[%language "C++"
1232 %defines
1233 %define namespace "]$1["
1234 %%
1235 start: ;
1236 ]])
1237
1238 AT_BISON_CHECK([[input.y]], [1], [],
1239 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
1240 [[input.y:3.9-17: error: ]b4_arg[
1241 ]])])
1242 ])
1243
1244 AT_CHECK_NAMESPACE_ERROR([[]],
1245                          [[namespace reference is empty]])
1246 AT_CHECK_NAMESPACE_ERROR([[                             ]],
1247                          [[namespace reference is empty]])
1248 AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
1249                          [[namespace reference has consecutive "::"]])
1250 AT_CHECK_NAMESPACE_ERROR([[foo::        ::bar]],
1251                          [[namespace reference has consecutive "::"]])
1252 AT_CHECK_NAMESPACE_ERROR([[::::bar]],
1253                          [[namespace reference has consecutive "::"]])
1254 AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
1255                          [[namespace reference has consecutive "::"]])
1256 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ::]],
1257                          [[namespace reference has consecutive "::"]],
1258                          [[namespace reference has a trailing "::"]])
1259 AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
1260                          [[namespace reference has a trailing "::"]])
1261 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ]],
1262                          [[namespace reference has a trailing "::"]])
1263 AT_CHECK_NAMESPACE_ERROR([[::]],
1264                          [[namespace reference has a trailing "::"]])
1265
1266 AT_CLEANUP
1267
1268 ## ------------------------ ##
1269 ## Bad character literals.  ##
1270 ## ------------------------ ##
1271
1272 # Bison used to accept character literals that were empty or contained
1273 # too many characters.
1274
1275 # FIXME: AT_DATA or some variant of AT_DATA may eventually permit
1276 # the final newline to be omitted.  See the threads starting at
1277 # <http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00019.html>.
1278
1279 AT_SETUP([[Bad character literals]])
1280
1281 AT_DATA([empty.y],
1282 [[%%
1283 start: '';
1284 start: '
1285 ]])
1286 AT_CHECK([[$PERL -e "print 'start: \'';" >> empty.y || exit 77]])
1287
1288 AT_BISON_CHECK([empty.y], [1], [],
1289 [[empty.y:2.8-9: warning: empty character literal
1290 empty.y:3.8-4.0: warning: empty character literal
1291 empty.y:3.8-4.0: error: missing "'" at end of line
1292 empty.y:4.8: warning: empty character literal
1293 empty.y:4.8: error: missing "'" at end of file
1294 ]])
1295
1296 AT_DATA([two.y],
1297 [[%%
1298 start: 'ab';
1299 start: 'ab
1300 ]])
1301 AT_CHECK([[$PERL -e "print 'start: \'ab';" >> two.y || exit 77]])
1302
1303 AT_BISON_CHECK([two.y], [1], [],
1304 [[two.y:2.8-11: warning: extra characters in character literal
1305 two.y:3.8-4.0: warning: extra characters in character literal
1306 two.y:3.8-4.0: error: missing "'" at end of line
1307 two.y:4.8-10: warning: extra characters in character literal
1308 two.y:4.8-10: error: missing "'" at end of file
1309 ]])
1310
1311 AT_DATA([three.y],
1312 [[%%
1313 start: 'abc';
1314 start: 'abc
1315 ]])
1316 AT_CHECK([[$PERL -e "print 'start: \'abc';" >> three.y || exit 77]])
1317
1318 AT_BISON_CHECK([three.y], [1], [],
1319 [[three.y:2.8-12: warning: extra characters in character literal
1320 three.y:3.8-4.0: warning: extra characters in character literal
1321 three.y:3.8-4.0: error: missing "'" at end of line
1322 three.y:4.8-11: warning: extra characters in character literal
1323 three.y:4.8-11: error: missing "'" at end of file
1324 ]])
1325
1326 AT_CLEANUP
1327
1328 ## ------------------------- ##
1329 ## Bad escapes in literals.  ##
1330 ## ------------------------- ##
1331
1332 AT_SETUP([[Bad escapes in literals]])
1333
1334 AT_DATA([input.y],
1335 [[%%
1336 start: '\777' '\0' '\xfff' '\x0'
1337        '\uffff' '\u0000' '\Uffffffff' '\U00000000'
1338        '\ ' '\A';
1339 ]])
1340
1341 # It is not easy to create special characters, we cannot even trust tr.
1342 # Beside we cannot even expect "echo '\0'" to output two characters
1343 # (well three with \n): at least Bash 3.2 converts the two-character
1344 # sequence "\0" into a single NUL character.
1345 AT_CHECK([[$PERL -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
1346            || exit 77]])
1347
1348 AT_BISON_CHECK([input.y], [1], [],
1349 [[input.y:2.9-12: error: invalid number after \-escape: 777
1350 input.y:2.8-13: warning: empty character literal
1351 input.y:2.16-17: error: invalid number after \-escape: 0
1352 input.y:2.15-18: warning: empty character literal
1353 input.y:2.21-25: error: invalid number after \-escape: xfff
1354 input.y:2.20-26: warning: empty character literal
1355 input.y:2.29-31: error: invalid number after \-escape: x0
1356 input.y:2.28-32: warning: empty character literal
1357 input.y:3.9-14: error: invalid number after \-escape: uffff
1358 input.y:3.8-15: warning: empty character literal
1359 input.y:3.18-23: error: invalid number after \-escape: u0000
1360 input.y:3.17-24: warning: empty character literal
1361 input.y:3.27-36: error: invalid number after \-escape: Uffffffff
1362 input.y:3.26-37: warning: empty character literal
1363 input.y:3.40-49: error: invalid number after \-escape: U00000000
1364 input.y:3.39-50: warning: empty character literal
1365 input.y:4.9-10: error: invalid character after \-escape: ' '
1366 input.y:4.8-11: warning: empty character literal
1367 input.y:4.14-15: error: invalid character after \-escape: A
1368 input.y:4.13-16: warning: empty character literal
1369 input.y:5.9-16: error: invalid character after \-escape: \t
1370 input.y:5.17: error: invalid character after \-escape: \f
1371 input.y:5.18: error: invalid character after \-escape: \0
1372 input.y:5.19: error: invalid character after \-escape: \001
1373 ]])
1374
1375 AT_CLEANUP
1376
1377 ## ------------------------- ##
1378 ## LAC: Errors for %define.  ##
1379 ## ------------------------- ##
1380
1381 AT_SETUP([[LAC: Errors for %define]])
1382
1383 AT_DATA([[input.y]],
1384 [[%%
1385 start: ;
1386 ]])
1387
1388 # parse.lac.* options are useless if LAC isn't actually activated.
1389 AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
1390                [[1]], [],
1391 [[<command line>:1: error: %define variable 'parse.lac.es-capacity-initial' is not used
1392 ]])
1393 AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
1394                [[1]], [],
1395 [[<command line>:1: error: %define variable 'parse.lac.memory-trace' is not used
1396 ]])
1397
1398 AT_CLEANUP
1399
1400 ## --------------------------------------------- ##
1401 ## -Werror is not affected by -Wnone and -Wall.  ##
1402 ## --------------------------------------------- ##
1403
1404 AT_SETUP([[-Werror is not affected by -Wnone and -Wall]])
1405
1406 AT_DATA([[input.y]],
1407 [[%%
1408 foo-bar: ;
1409 ]])
1410
1411 # -Werror is not enabled by -Wall or equivalent.
1412 AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]],
1413 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1414 ]])
1415 AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
1416 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1417 ]])
1418 AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
1419 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1420 ]])
1421
1422 # -Werror is not disabled by -Wnone or equivalent.
1423 AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]])
1424 AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]],
1425 [[bison: warnings being treated as errors
1426 input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1427 ]])
1428 [mv stderr experr]
1429 AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
1430
1431 AT_CLEANUP
1432
1433
1434 ## ------------------------------------------------------ ##
1435 ## %name-prefix and %define api.prefix are incompatible.  ##
1436 ## ------------------------------------------------------ ##
1437
1438 AT_SETUP([[%name-prefix and %define api.prefix are incompatible]])
1439
1440 # AT_TEST(DIRECTIVES, OPTIONS, ERROR-LOCATION)
1441 # --------------------------------------------
1442 m4_pushdef([AT_TEST],
1443 [AT_DATA([[input.y]],
1444 [[$1
1445 %%
1446 exp:;
1447 ]])
1448 AT_BISON_CHECK([[$2 input.y]], [[1]], [[]],
1449 [[$3: error: '%name-prefix' and '%define api.prefix' cannot be used together
1450 ]])
1451 ])
1452
1453 AT_TEST([%define api.prefix foo %name-prefix "bar"], [], [input.y:1.9-18])
1454 AT_TEST([], [-Dapi.prefix=foo -p bar], [<command line>:1])
1455 AT_TEST([%name-prefix "bar"], [-Dapi.prefix=foo], [<command line>:1])
1456 AT_TEST([%define api.prefix foo], [-p bar], [input.y:1.9-18])
1457
1458 m4_popdef([AT_TEST])
1459
1460 AT_CLEANUP
1461
1462
1463 ## -------------- ##
1464 ## Stray $ or @.  ##
1465 ## -------------- ##
1466
1467 AT_SETUP([[Stray $ or @]])
1468
1469 # Give %printer and %destructor "<*> exp TOK" instead of "<*>" to
1470 # check that the warnings are reported once, not three times.
1471
1472 AT_DATA_GRAMMAR([[input.y]],
1473 [[%token TOK
1474 %destructor     { $%; @%; } <*> exp TOK;
1475 %initial-action { $%; @%; };
1476 %printer        { $%; @%; } <*> exp TOK;
1477 %%
1478 exp: TOK        { $%; @%; $$ = $1; };
1479 ]])
1480
1481 AT_BISON_CHECK([[input.y]], 0, [],
1482 [[input.y:10.19: warning: stray '$'
1483 input.y:10.23: warning: stray '@'
1484 input.y:11.19: warning: stray '$'
1485 input.y:11.23: warning: stray '@'
1486 input.y:12.19: warning: stray '$'
1487 input.y:12.23: warning: stray '@'
1488 input.y:14.19: warning: stray '$'
1489 input.y:14.23: warning: stray '@'
1490 ]])
1491
1492 AT_CLEANUP
1493
1494
1495
1496 ## ---------------- ##
1497 ## Code injection.  ##
1498 ## ---------------- ##
1499
1500
1501 AT_SETUP([[Code injection]])
1502
1503 m4_pattern_allow([^m4_errprintn$])
1504
1505 # AT_TEST([MACRO])
1506 # ----------------
1507 # Try to have MACRO be run by bison.
1508 m4_pushdef([AT_TEST],
1509 [AT_DATA([[input.y]],
1510 [[%type <$1(DEAD %type)> exp
1511 %token <$1(DEAD %token)> a
1512 %initial-action
1513 {
1514   $$;
1515   $<$1(DEAD %initial-action)>$
1516 };
1517 %printer
1518 {
1519   $$
1520   $<$1(DEAD %printer)>$
1521 } <> <*>;
1522 %lex-param
1523 {
1524   $1(DEAD %lex-param)
1525 };
1526 %parse-param
1527 {
1528   $1(DEAD %parse-param)
1529 };
1530 %%
1531 exp:
1532   a a[last]
1533   {
1534     $$;
1535     $][1;
1536     $<$1(DEAD action 1)>$
1537     $<$1(DEAD action 2)>1
1538     $<$1(DEAD action 3)>last
1539     $<$1(DEAD action 4)>0
1540     ;
1541   };
1542 ]])
1543
1544 # FIXME: Provide a means to iterate over all the skeletons.
1545 AT_BISON_CHECK([[-d               input.y]])
1546 AT_BISON_CHECK([[-d -S glr.c      input.y]])
1547 AT_BISON_CHECK([[-d -S lalr1.cc   input.y]])
1548 AT_BISON_CHECK([[-d -S glr.cc     input.y]])
1549 AT_BISON_CHECK([[   -S lalr1.java input.y]])
1550 ])
1551
1552 AT_TEST([m4_errprintn])
1553 AT_TEST([@:>@m4_errprintn])
1554
1555 m4_popdef([AT_TEST])
1556
1557 AT_CLEANUP