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 $n.  ##
  25 ## ------------ ##
  26
  27 AT_SETUP([Invalid $n and @n])
  28
  29 AT_DATA([input.y],
  30 [[%%
  31 exp: { $$ = $1 ; };
  32 exp: { @$ = @1 ; };
  33 ]])
  34
  35 AT_BISON_CHECK([input.y], [1], [],
  36 [[input.y:2.13-14: integer out of range: '$1'
  37 input.y:3.13-14: integer out of range: '@1'
  38 ]])
  39
  40 AT_CLEANUP
  41
  42
  43 ## -------------- ##
  44 ## Type Clashes.  ##
  45 ## -------------- ##
  46
  47 AT_SETUP([Type Clashes])
  48
  49 AT_DATA([input.y],
  50 [[%union { int bar; }
  51 %token foo
  52 %type <bar> exp
  53 %%
  54 exp: foo { $$; } foo { $2; } foo
  55    | foo
  56    | /* Empty. */
  57    ;
  58 ]])
  59
  60 AT_BISON_CHECK([input.y], [1], [],
  61 [[input.y:5.12-13: $$ for the midrule at $2 of 'exp' has no declared type
  62 input.y:5.24-25: $2 of 'exp' has no declared type
  63 input.y:5.6-32: warning: type clash on default action: <bar> != <>
  64 input.y:6.6-8: warning: type clash on default action: <bar> != <>
  65 input.y:7.5: warning: empty rule for typed nonterminal, and no action
  66 ]])
  67
  68 AT_CLEANUP
  69
  70
  71 # _AT_UNUSED_VALUES_DECLARATIONS()
  72 # --------------------------------
  73 # Generate the token, type, and destructor
  74 # declarations for the unused values tests.
  75 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
  76 [[[%token <integer> INT;
  77 %type <integer> a b c d e f g h i j k l;
  78 %destructor { destroy ($$); } INT a b c d e f g h i j k l;]]])
  79
  80
  81 # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
  82 # ----------------------------------------------------------------
  83 # Generate a grammar to test unused values, compile it, run it.  If
  84 # DECLARATIONS_AFTER is set, then the token, type, and destructor
  85 # declarations are generated after the rules rather than before.  If
  86 # CHECK_MIDRULE_VALUES is set, then --warnings=midrule-values is set.
  87 m4_define([AT_CHECK_UNUSED_VALUES],
  88 [AT_DATA([input.y],
  89 m4_ifval($1, [
  90
  91
  92 ], [_AT_UNUSED_VALUES_DECLARATIONS
  93 ])[[%%
  94 start:
  95   'a' a { $]2[; } | 'b' b { $]2[; } | 'c' c { $]2[; } | 'd' d { $]2[; }
  96 | 'e' e { $]2[; } | 'f' f { $]2[; } | 'g' g { $]2[; } | 'h' h { $]2[; }
  97 | 'i' i { $]2[; } | 'j' j { $]2[; } | 'k' k { $]2[; } | 'l' l { $]2[; }
  98 ;
  99
 100 a: INT | INT { } INT { } INT { };
 101 b: INT | /* empty */;
 102 c: INT | INT { $]1[; } INT { $<integer>2; } INT { $<integer>4; };
 103 d: INT | INT { } INT { $]1[; } INT { $<integer>2; };
 104 e: INT | INT { } INT {  } INT { $]1[; };
 105 f: INT | INT { } INT {  } INT { $]$[ = $]1[ + $]3[ + $]5[; };
 106 g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
 107 h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
 108 i: INT | INT INT { } { $]$[ = $]1[ + $]2[; };
 109 j: INT | INT INT { $<integer>$ = 1; } { $]$[ = $]1[ + $]2[; };
 110 k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
 111 l: INT | INT { $<integer>$ = $<integer>1; } INT { $<integer>$ = $<integer>2 + $<integer>3; } INT { $<integer>$ = $<integer>4 + $<integer>5; };]]m4_ifval($1, [
 112 _AT_UNUSED_VALUES_DECLARATIONS])
 113 )
 114
 115 AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
 116 [[input.y:11.10-32: warning: unset value: $]$[
 117 input.y:11.10-32: warning: unused value: $]1[
 118 input.y:11.10-32: warning: unused value: $]3[
 119 input.y:11.10-32: warning: unused value: $]5[
 120 input.y:12.9: warning: empty rule for typed nonterminal, and no action
 121 ]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$
 122 input.y:13.26-41: warning: unset value: $$
 123 ]]])[[input.y:13.10-62: warning: unset value: $]$[
 124 input.y:13.10-62: warning: unused value: $]3[
 125 input.y:13.10-62: warning: unused value: $]5[
 126 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
 127 ]]])[[input.y:14.10-49: warning: unset value: $]$[
 128 input.y:14.10-49: warning: unused value: $]3[
 129 input.y:14.10-49: warning: unused value: $]5[
 130 input.y:15.10-37: warning: unset value: $]$[
 131 input.y:15.10-37: warning: unused value: $]3[
 132 input.y:15.10-37: warning: unused value: $]5[
 133 input.y:17.10-58: warning: unset value: $]$[
 134 input.y:17.10-58: warning: unused value: $]1[
 135 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
 136 ]]])[[input.y:17.10-58: warning: unused value: $]3[
 137 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[
 138 ]]])[[input.y:17.10-58: warning: unused value: $]5[
 139 input.y:18.10-72: warning: unset value: $]$[
 140 input.y:18.10-72: warning: unused value: $]1[
 141 input.y:18.10-72: warning: unused value: $]3[
 142 ]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[
 143 ]]])[[input.y:18.10-72: warning: unused value: $]5[
 144 ]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[
 145 ]]])[[input.y:21.10-68: warning: unset value: $]$[
 146 input.y:21.10-68: warning: unused value: $]1[
 147 input.y:21.10-68: warning: unused value: $]2[
 148 ]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[
 149 ]]]))])
 150
 151
 152 ## --------------- ##
 153 ## Unused values.  ##
 154 ## --------------- ##
 155
 156 AT_SETUP([Unused values])
 157 AT_CHECK_UNUSED_VALUES
 158 AT_CHECK_UNUSED_VALUES(, [1])
 159 AT_CLEANUP
 160
 161
 162 ## ------------------------------------------ ##
 163 ## Unused values before symbol declarations.  ##
 164 ## ------------------------------------------ ##
 165
 166 AT_SETUP([Unused values before symbol declarations])
 167 AT_CHECK_UNUSED_VALUES([1])
 168 AT_CHECK_UNUSED_VALUES([1], [1])
 169 AT_CLEANUP
 170
 171
 172 ## --------------------------------------------- ##
 173 ## Default %printer and %destructor redeclared.  ##
 174 ## --------------------------------------------- ##
 175
 176 AT_SETUP([Default %printer and %destructor redeclared])
 177
 178 AT_DATA([[input.y]],
 179 [[%destructor { destroy ($$); } <*> <*>
 180 %printer { print ($$); } <*> <*>
 181
 182 %destructor { destroy ($$); } <*>
 183 %printer { print ($$); } <*>
 184
 185 %destructor { destroy ($$); } <> <>
 186 %printer { print ($$); } <> <>
 187
 188 %destructor { destroy ($$); } <>
 189 %printer { print ($$); } <>
 190
 191 %%
 192
 193 start: ;
 194
 195 %destructor { destroy ($$); } <*>;
 196 %printer { print ($$); } <*>;
 197
 198 %destructor { destroy ($$); } <>;
 199 %printer { print ($$); } <>;
 200 ]])
 201
 202 AT_BISON_CHECK([input.y], [1], [],
 203 [[input.y:1.13-29: redeclaration for default tagged %destructor
 204 input.y:1.13-29: previous declaration
 205 input.y:2.10-24: redeclaration for default tagged %printer
 206 input.y:2.10-24: previous declaration
 207 input.y:4.13-29: redeclaration for default tagged %destructor
 208 input.y:1.13-29: previous declaration
 209 input.y:5.10-24: redeclaration for default tagged %printer
 210 input.y:2.10-24: previous declaration
 211 input.y:7.13-29: redeclaration for default tagless %destructor
 212 input.y:7.13-29: previous declaration
 213 input.y:8.10-24: redeclaration for default tagless %printer
 214 input.y:8.10-24: previous declaration
 215 input.y:10.13-29: redeclaration for default tagless %destructor
 216 input.y:7.13-29: previous declaration
 217 input.y:11.10-24: redeclaration for default tagless %printer
 218 input.y:8.10-24: previous declaration
 219 input.y:17.13-29: redeclaration for default tagged %destructor
 220 input.y:4.13-29: previous declaration
 221 input.y:18.10-24: redeclaration for default tagged %printer
 222 input.y:5.10-24: previous declaration
 223 input.y:20.13-29: redeclaration for default tagless %destructor
 224 input.y:10.13-29: previous declaration
 225 input.y:21.10-24: redeclaration for default tagless %printer
 226 input.y:11.10-24: previous declaration
 227 ]])
 228
 229 AT_CLEANUP
 230
 231
 232 ## ---------------------------------------------- ##
 233 ## Per-type %printer and %destructor redeclared.  ##
 234 ## ---------------------------------------------- ##
 235
 236 AT_SETUP([Per-type %printer and %destructor redeclared])
 237
 238 AT_DATA([[input.y]],
 239 [[%destructor { destroy ($$); } <field1> <field2>
 240 %printer { print ($$); } <field1> <field2>
 241
 242 %destructor { destroy ($$); } <field1> <field1>
 243 %printer { print ($$); } <field2> <field2>
 244
 245 %%
 246
 247 start: ;
 248
 249 %destructor { destroy ($$); } <field2> <field1>;
 250 %printer { print ($$); } <field2> <field1>;
 251 ]])
 252
 253 AT_BISON_CHECK([input.y], [1], [],
 254 [[input.y:4.13-29: %destructor redeclaration for <field1>
 255 input.y:1.13-29: previous declaration
 256 input.y:4.13-29: %destructor redeclaration for <field1>
 257 input.y:4.13-29: previous declaration
 258 input.y:5.10-24: %printer redeclaration for <field2>
 259 input.y:2.10-24: previous declaration
 260 input.y:5.10-24: %printer redeclaration for <field2>
 261 input.y:5.10-24: previous declaration
 262 input.y:11.13-29: %destructor redeclaration for <field1>
 263 input.y:4.13-29: previous declaration
 264 input.y:11.13-29: %destructor redeclaration for <field2>
 265 input.y:1.13-29: previous declaration
 266 input.y:12.10-24: %printer redeclaration for <field1>
 267 input.y:2.10-24: previous declaration
 268 input.y:12.10-24: %printer redeclaration for <field2>
 269 input.y:5.10-24: previous declaration
 270 ]])
 271
 272 AT_CLEANUP
 273
 274 ## ---------------------------------------------------- ##
 275 ## Undeclared symbols used for a printer or destructor. ##
 276 ## ---------------------------------------------------- ##
 277
 278 AT_SETUP([Undeclared symbols used for a printer or destructor])
 279
 280 AT_DATA([[input.y]],
 281 [[%printer {} token1
 282 %destructor {} token2
 283
 284 %%
 285 exp: "a";
 286 ]])
 287
 288 AT_BISON_CHECK([input.y], [0], [],
 289 [[input.y:1.13-18: warning: symbol token1 is used, but is not defined as a token and has no rules
 290 input.y:2.16-21: warning: symbol token2 is used, but is not defined as a token and has no rules
 291 input.y: warning: 2 nonterminals useless in grammar
 292 input.y:1.13-18: warning: nonterminal useless in grammar: token1
 293 input.y:2.16-21: warning: nonterminal useless in grammar: token2
 294 ]])
 295
 296 AT_CLEANUP
 297
 298
 299 ## ---------------------------------------- ##
 300 ## Unused values with default %destructor.  ##
 301 ## ---------------------------------------- ##
 302
 303 AT_SETUP([Unused values with default %destructor])
 304
 305 AT_DATA([[input.y]],
 306 [[%destructor { destroy ($$); } <>
 307 %type <tag> tagged
 308
 309 %%
 310
 311 start: end end tagged tagged { $<tag>1; $3; } ;
 312 end: { } ;
 313 tagged: { } ;
 314 ]])
 315
 316 AT_BISON_CHECK([input.y], [0], [],
 317 [[input.y:6.8-45: warning: unset value: $$
 318 input.y:6.8-45: warning: unused value: $2
 319 input.y:7.6-8: warning: unset value: $$
 320 ]])
 321
 322 AT_DATA([[input.y]],
 323 [[%destructor { destroy ($$); } <*>
 324 %type <tag> tagged
 325
 326 %%
 327
 328 start: end end tagged tagged { $<tag>1; $3; } ;
 329 end: { } ;
 330 tagged: { } ;
 331 ]])
 332
 333 AT_BISON_CHECK([input.y], [0], [],
 334 [[input.y:6.8-45: warning: unused value: $4
 335 input.y:8.9-11: warning: unset value: $$
 336 ]])
 337
 338 AT_CLEANUP
 339
 340
 341 ## ----------------------------------------- ##
 342 ## Unused values with per-type %destructor.  ##
 343 ## ----------------------------------------- ##
 344
 345 AT_SETUP([Unused values with per-type %destructor])
 346
 347 AT_DATA([[input.y]],
 348 [[%destructor { destroy ($$); } <field1>
 349 %type <field1> start end
 350
 351 %%
 352
 353 start: end end { $1; } ;
 354 end: { }  ;
 355 ]])
 356
 357 AT_BISON_CHECK([input.y], [0], [],
 358 [[input.y:6.8-22: warning: unset value: $$
 359 input.y:6.8-22: warning: unused value: $2
 360 input.y:7.6-8: warning: unset value: $$
 361 ]])
 362
 363 AT_CLEANUP
 364
 365
 366 ## ---------------------- ##
 367 ## Incompatible Aliases.  ##
 368 ## ---------------------- ##
 369
 370 AT_SETUP([Incompatible Aliases])
 371
 372 AT_DATA([input.y],
 373 [[%token foo "foo"
 374
 375 %type <bar>       foo
 376 %printer {bar}    foo
 377 %destructor {bar} foo
 378 %left             foo
 379
 380 %type <baz>       "foo"
 381 %printer {baz}    "foo"
 382 %destructor {baz} "foo"
 383 %left             "foo"
 384
 385 %%
 386 exp: foo;
 387 ]])
 388
 389 AT_BISON_CHECK([input.y], [1], [],
 390 [[input.y:8.7-11: %type redeclaration for foo
 391 input.y:3.7-11: previous declaration
 392 input.y:10.13-17: %destructor redeclaration for foo
 393 input.y:5.13-17: previous declaration
 394 input.y:9.10-14: %printer redeclaration for foo
 395 input.y:4.10-14: previous declaration
 396 input.y:11.1-5: %left redeclaration for foo
 397 input.y:6.1-5: previous declaration
 398 ]])
 399
 400 AT_CLEANUP
 401
 402
 403
 404 ## ----------------------- ##
 405 ## Torturing the Scanner.  ##
 406 ## ----------------------- ##
 407
 408 # Be sure to compile and run, so that the C compiler checks what
 409 # we do.
 410
 411 AT_SETUP([Torturing the Scanner])
 412
 413 AT_BISON_OPTION_PUSHDEFS
 414 AT_DATA([input.y], [])
 415 AT_BISON_CHECK([input.y], [1], [],
 416 [[input.y:1.1: syntax error, unexpected end of file
 417 ]])
 418
 419
 420 AT_DATA([input.y],
 421 [{}
 422 ])
 423 AT_BISON_CHECK([input.y], [1], [],
 424 [[input.y:1.1-2: syntax error, unexpected {...}
 425 ]])
 426
 427
 428 AT_DATA_GRAMMAR([input.y],
 429 [[%{
 430 /* This is seen in GCC: a %{ and %} in middle of a comment. */
 431 const char *foo = "So %{ and %} can be here too.";
 432
 433 #if 0
 434 /* These examples test Bison while not stressing C compilers too much.
 435    Many C compilers mishandle backslash-newlines, so this part of the
 436    test is inside "#if 0".  The comment and string are written so that
 437    the "#endif" will be seen regardless of the C compiler bugs that we
 438    know about, namely:
 439
 440      HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
 441      comment.
 442
 443      The Apple Darwin compiler (as of late 2002) mishandles
 444      \\[newline]' within a character constant.
 445
 446    */
 447
 448 /\
 449 * A comment with backslash-newlines in it. %} *\
 450 \
 451 /
 452 /* { Close the above comment, if the C compiler mishandled it.  */
 453
 454 char str[] = "\\
 455 " A string with backslash-newlines in it %{ %} \\
 456 \
 457 "";
 458
 459 char apostrophe = '\'';
 460 #endif
 461
 462 #include <stdio.h>
 463 #include <stdlib.h>
 464 %}
 465 /* %{ and %} can be here too. */
 466
 467 %{
 468 /* Exercise pre-prologue dependency to %union.  */
 469 typedef int value;
 470 %}
 471
 472 /* Exercise M4 quoting: '@:>@@:>@', 0.  */
 473
 474 /* Also exercise %union. */
 475 %union
 476 {
 477   value ival; /* A comment to exercise an old bug. */
 478 };
 479
 480
 481 /* Exercise post-prologue dependency to %union.  */
 482 %{
 483 static YYSTYPE value_as_yystype (value val);
 484
 485 /* Exercise quotes in declarations.  */
 486 char quote[] = "@:>@@:>@,";
 487 %}
 488
 489 %{
 490 ]AT_YYERROR_DECLARE[
 491 ]AT_YYLEX_DECLARE[
 492 %}
 493
 494 %type <ival> '@<:@'
 495
 496 /* Exercise quotes in strings.  */
 497 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
 498
 499 %%
 500 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1.  */
 501 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
 502   {
 503     /* Exercise quotes in braces.  */
 504     char tmp[] = "@<:@%c@:>@,\n";
 505     printf (tmp, $1);
 506   }
 507 ;
 508
 509 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
 510 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
 511 output.or.oline.opt: ;|oline;;|output;;;
 512 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
 513 %%
 514 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2.  */
 515
 516 static YYSTYPE
 517 value_as_yystype (value val)
 518 {
 519   YYSTYPE res;
 520   res.ival = val;
 521   return res;
 522 }
 523 ]AT_YYERROR_DEFINE[
 524 static int
 525 yylex (void)
 526 {
 527   static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
 528 #output "; /* "
 529   */
 530   static size_t toknum;
 531   if (! (toknum < sizeof input))
 532     abort ();
 533   yylval = value_as_yystype (input[toknum]);
 534   return input[toknum++];
 535 }
 536 ]])
 537
 538 # Pacify Emacs'font-lock-mode: "
 539
 540 AT_DATA([main.c],
 541 [[typedef int value;
 542 #include "input.h"
 543
 544 int yyparse (void);
 545
 546 int
 547 main (void)
 548 {
 549   return yyparse ();
 550 }
 551 ]])
 552 AT_BISON_OPTION_POPDEFS
 553
 554 AT_BISON_CHECK([-d -v -o input.c input.y])
 555 AT_COMPILE([input.o], [-c input.c])
 556 AT_COMPILE([main.o], [-c main.c])
 557 AT_COMPILE([input], [input.o main.o])
 558 AT_PARSER_CHECK([./input], 0,
 559 [[[@<:@],
 560 ]])
 561
 562 AT_CLEANUP
 563
 564
 565 ## ---------------------- ##
 566 ## Typed symbol aliases.  ##
 567 ## ---------------------- ##
 568
 569 AT_SETUP([Typed symbol aliases])
 570
 571 # Bison 2.0 broke typed symbol aliases - ensure they work.
 572
 573 AT_DATA_GRAMMAR([input.y],
 574 [[%union
 575 {
 576   int val;
 577 };
 578 %token <val> MY_TOKEN "MY TOKEN"
 579 %type <val> exp
 580 %%
 581 exp: "MY TOKEN";
 582 %%
 583 ]])
 584
 585 AT_BISON_CHECK([-o input.c input.y])
 586
 587 AT_CLEANUP
 588
 589
 590 ## --------- ##
 591 ## Require.  ##
 592 ## --------- ##
 593
 594 m4_define([AT_CHECK_REQUIRE],
 595 [AT_SETUP([Require $1])
 596 AT_DATA_GRAMMAR([input.y],
 597 [[%require "$1";
 598 %%
 599 empty_file:;
 600 ]])
 601 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
 602 AT_CLEANUP
 603 ])
 604
 605 AT_CHECK_REQUIRE(1.0, 0)
 606 AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
 607 ## FIXME: Some day augment this version number.
 608 AT_CHECK_REQUIRE(100.0, 63)
 609
 610
 611 ## ------------------------------------- ##
 612 ## String aliases for character tokens.  ##
 613 ## ------------------------------------- ##
 614
 615 AT_SETUP([String aliases for character tokens])
 616
 617 # Bison once thought a character token and its alias were different
 618 # symbols with the same user token number.
 619
 620 AT_DATA_GRAMMAR([input.y],
 621 [[%token 'a' "a"
 622 %%
 623 start: 'a';
 624 %%
 625 ]])
 626
 627 AT_BISON_CHECK([-o input.c input.y])
 628
 629 AT_CLEANUP
 630
 631
 632 ## -------------- ##
 633 ## Symbol names.  ##
 634 ## -------------- ##
 635
 636 AT_SETUP([Symbols])
 637
 638 AT_BISON_OPTION_PUSHDEFS
 639 AT_DATA_GRAMMAR([input.y],
 640 [[%token WITH-DASH
 641 %token WITHOUT_DASH "WITHOUT-DASH"
 642 %token WITH.PERIOD
 643 %token WITHOUT_PERIOD "WITHOUT.PERIOD"
 644 %code {
 645   ]AT_YYERROR_DECLARE[
 646   ]AT_YYLEX_DECLARE[
 647 }
 648 %%
 649 start: with-dash without_dash with.period without_period;
 650 with-dash: WITH-DASH;
 651 without_dash: "WITHOUT-DASH";
 652 with.period: WITH.PERIOD;
 653 without_period: "WITHOUT.PERIOD";
 654 %%
 655 ]AT_YYERROR_DEFINE[
 656 ]AT_YYLEX_DEFINE[
 657 ]])
 658 AT_BISON_OPTION_POPDEFS
 659
 660 # POSIX Yacc accept periods, but not dashes.
 661 AT_BISON_CHECK([--yacc input.y], [1], [],
 662 [[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH
 663 input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash
 664 ]])
 665
 666 # So warn about them.
 667 AT_BISON_CHECK([-Wyacc input.y], [], [],
 668 [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH
 669 input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash
 670 ]])
 671
 672 # Dashes are fine for GNU Bison.
 673 AT_BISON_CHECK([-o input.c input.y])
 674
 675 # Make sure we don't export silly token identifiers with periods or dashes.
 676 AT_COMPILE([input.o], [-c input.c])
 677
 678
 679 # Periods are genuine letters, they can start identifiers.
 680 # Digits and dashes cannot.
 681 AT_DATA_GRAMMAR([input.y],
 682 [[%token .GOOD
 683          -GOOD
 684          1NV4L1D
 685          -123
 686 %%
 687 start: .GOOD GOOD
 688 ]])
 689 AT_BISON_CHECK([-o input.c input.y], [1], [],
 690 [[input.y:10.10: invalid character: '-'
 691 input.y:11.10-16: invalid identifier: '1NV4L1D'
 692 input.y:12.10: invalid character: '-'
 693 ]])
 694
 695 AT_CLEANUP
 696
 697
 698 ## ----------------- ##
 699 ## Numbered tokens.  ##
 700 ## ----------------- ##
 701
 702 AT_SETUP([Numbered tokens])
 703
 704 AT_DATA_GRAMMAR([redecl.y],
 705 [[%token DECIMAL_1     11259375
 706          HEXADECIMAL_1 0xabcdef
 707          HEXADECIMAL_2 0xFEDCBA
 708          DECIMAL_2     16702650
 709 %%
 710 start: DECIMAL_1 HEXADECIMAL_2;
 711 ]])
 712
 713 AT_BISON_CHECK([redecl.y], [1], [],
 714 [[redecl.y:10.10-22: user token number 11259375 redeclaration for HEXADECIMAL_1
 715 redecl.y:9.8-16: previous declaration for DECIMAL_1
 716 redecl.y:12.10-18: user token number 16702650 redeclaration for DECIMAL_2
 717 redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
 718 ]])
 719
 720 AT_DATA_GRAMMAR([too-large.y],
 721 [[%token TOO_LARGE_DEC 999999999999999999999
 722          TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
 723 %%
 724 start: TOO_LARGE_DEC TOO_LARGE_HEX
 725 %%
 726 ]])
 727
 728 AT_BISON_CHECK([too-large.y], [1], [],
 729 [[too-large.y:9.22-42: integer out of range: '999999999999999999999'
 730 too-large.y:10.24-44: integer out of range: '0xFFFFFFFFFFFFFFFFFFF'
 731 ]])
 732
 733 AT_CLEANUP
 734
 735
 736 ## --------------------- ##
 737 ## Unclosed constructs.  ##
 738 ## --------------------- ##
 739
 740 AT_SETUP([Unclosed constructs])
 741
 742 # Bison's scan-gram.l once forgot to STRING_FINISH some unclosed
 743 # constructs, so they were prepended to whatever it STRING_GROW'ed
 744 # next.  It also threw them away rather than returning them to the
 745 # parser.  The effect was confusing subsequent error messages.
 746
 747 AT_DATA([input.y],
 748 [[%token A "a
 749 %token B "b"
 750 %token AB "ab" // Used to complain that "ab" was already used.
 751 %token C '1
 752 %token TWO "2"
 753 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
 754
 755 %%
 756
 757 start: ;
 758
 759 // Used to report a syntax error because it didn't see any kind of symbol
 760 // identifier.
 761 %type <f> 'a
 762 ;
 763 %type <f> "a
 764 ;
 765 // Used to report a syntax error because it didn't see braced code.
 766 %destructor { free ($$)
 767 ]])
 768
 769 AT_BISON_CHECK([-o input.c input.y], 1, [],
 770 [[input.y:1.10-2.0: missing '"' at end of line
 771 input.y:4.10-5.0: missing "'" at end of line
 772 input.y:14.11-15.0: missing "'" at end of line
 773 input.y:16.11-17.0: missing '"' at end of line
 774 input.y:19.13-20.0: missing '}' at end of file
 775 input.y:20.1: syntax error, unexpected end of file
 776 ]])
 777
 778 AT_CLEANUP
 779
 780
 781 ## ------------------------- ##
 782 ## %start after first rule.  ##
 783 ## ------------------------- ##
 784
 785 AT_SETUP([%start after first rule])
 786
 787 # Bison once complained that a %start after the first rule was a
 788 # redeclaration of the start symbol.
 789
 790 AT_DATA([input.y],
 791 [[%%
 792 false_start: ;
 793 start: false_start ;
 794 %start start;
 795 ]])
 796
 797 AT_BISON_CHECK([-o input.c input.y])
 798
 799 AT_CLEANUP
 800
 801
 802 ## --------------------- ##
 803 ## %prec takes a token.  ##
 804 ## --------------------- ##
 805
 806 AT_SETUP([%prec takes a token])
 807
 808 # Bison once allowed %prec sym where sym was a nonterminal.
 809
 810 AT_DATA([input.y],
 811 [[%%
 812 start: PREC %prec PREC ;
 813 PREC: ;
 814 ]])
 815
 816 AT_BISON_CHECK([input.y], [1], [],
 817 [[input.y:3.1-4: rule given for PREC, which is a token
 818 ]])
 819
 820 AT_CLEANUP
 821
 822
 823 ## ------------------------------- ##
 824 ## %prec's token must be defined.  ##
 825 ## ------------------------------- ##
 826
 827 AT_SETUP([[%prec's token must be defined]])
 828
 829 # According to POSIX, a %prec token must be defined separately.
 830
 831 AT_DATA([[input.y]],
 832 [[%%
 833 start: %prec PREC ;
 834 ]])
 835
 836 AT_BISON_CHECK([[input.y]], [[0]], [],
 837 [[input.y:2.8-17: warning: token for %prec is not defined: PREC
 838 ]])
 839
 840 AT_CLEANUP
 841
 842
 843 ## -------------------------------- ##
 844 ## Reject unused %code qualifiers.  ##
 845 ## -------------------------------- ##
 846
 847 AT_SETUP([Reject unused %code qualifiers])
 848
 849 AT_DATA([input-c.y],
 850 [[%code q {}
 851 %code bad {}
 852 %code bad {}
 853 %code format {}
 854 %%
 855 start: ;
 856 ]])
 857 AT_BISON_CHECK([[input-c.y]], [[1]], [],
 858 [[input-c.y:1.7: %code qualifier 'q' is not used
 859 input-c.y:2.7-9: %code qualifier 'bad' is not used
 860 input-c.y:3.7-9: %code qualifier 'bad' is not used
 861 input-c.y:4.7-12: %code qualifier 'format' is not used
 862 ]])
 863
 864 AT_DATA([input-c-glr.y],
 865 [[%code q {}
 866 %code bad {}
 867  %code bad {}
 868 %%
 869 start: ;
 870 ]])
 871 AT_BISON_CHECK([[input-c-glr.y]], [[1]], [],
 872 [[input-c-glr.y:1.7: %code qualifier 'q' is not used
 873 input-c-glr.y:2.7-9: %code qualifier 'bad' is not used
 874 input-c-glr.y:3.8-10: %code qualifier 'bad' is not used
 875 ]])
 876
 877 AT_DATA([input-c++.y],
 878 [[%code q {}
 879 %code bad {}
 880  %code q {}
 881 %%
 882 start: ;
 883 ]])
 884 AT_BISON_CHECK([[input-c++.y]], [[1]], [],
 885 [[input-c++.y:1.7: %code qualifier 'q' is not used
 886 input-c++.y:2.7-9: %code qualifier 'bad' is not used
 887 input-c++.y:3.8: %code qualifier 'q' is not used
 888 ]])
 889
 890 AT_DATA([input-c++-glr.y],
 891 [[%code bad {}
 892 %code q {}
 893 %code q {}
 894 %%
 895 start: ;
 896 ]])
 897 AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [],
 898 [[input-c++-glr.y:1.7-9: %code qualifier 'bad' is not used
 899 input-c++-glr.y:2.7: %code qualifier 'q' is not used
 900 input-c++-glr.y:3.7: %code qualifier 'q' is not used
 901 ]])
 902
 903 AT_DATA([special-char-@@.y],
 904 [[%code bad {}
 905 %code q {}
 906 %code q {}
 907 %%
 908 start: ;
 909 ]])
 910 AT_BISON_CHECK([[special-char-@@.y]], [[1]], [],
 911 [[special-char-@@.y:1.7-9: %code qualifier 'bad' is not used
 912 special-char-@@.y:2.7: %code qualifier 'q' is not used
 913 special-char-@@.y:3.7: %code qualifier 'q' is not used
 914 ]])
 915
 916 AT_DATA([special-char-@:>@.y],
 917 [[%code bad {}
 918 %code q {}
 919 %code q {}
 920 %%
 921 start: ;
 922 ]])
 923 AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [],
 924 [[special-char-@:>@.y:1.7-9: %code qualifier 'bad' is not used
 925 special-char-@:>@.y:2.7: %code qualifier 'q' is not used
 926 special-char-@:>@.y:3.7: %code qualifier 'q' is not used
 927 ]])
 928
 929 AT_CLEANUP
 930
 931
 932 ## ---------------- ##
 933 ## %define errors.  ##
 934 ## ---------------- ##
 935
 936 AT_SETUP([%define errors])
 937
 938 AT_DATA([input-redefined.y],
 939 [[%define var "value1"
 940 %define var "value1"
 941  %define var "value2"
 942 %define special1 "@:>@"
 943 %define special2 "@<:@"
 944 %%
 945 start: ;
 946 ]])
 947
 948 AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
 949 [[input-redefined.y:2.9-11: %define variable 'var' redefined
 950 input-redefined.y:1.9-11: previous definition
 951 input-redefined.y:3.10-12: %define variable 'var' redefined
 952 input-redefined.y:2.9-11: previous definition
 953 ]])
 954
 955 AT_DATA([input-unused.y],
 956 [[%define var "value"
 957 %%
 958 start: ;
 959 ]])
 960
 961 AT_BISON_CHECK([[input-unused.y]], [[1]], [],
 962 [[input-unused.y:1.9-11: %define variable 'var' is not used
 963 ]])
 964
 965 AT_CLEANUP
 966
 967
 968 ## ----------------------------------- ##
 969 ## %define, --define, --force-define.  ##
 970 ## ----------------------------------- ##
 971
 972 AT_SETUP([[%define, --define, --force-define]])
 973
 974 AT_DATA([[skel.c]],
 975 [[m4@&t@_divert_push(0)@
 976 @output(b4_parser_file_name@)@
 977 [var-dd: ]b4_percent_define_get([[var-dd]])[
 978 var-ff: ]b4_percent_define_get([[var-ff]])[
 979 var-dfg: ]b4_percent_define_get([[var-dfg]])[
 980 var-fd: ]b4_percent_define_get([[var-fd]])
 981 m4@&t@_divert_pop(0)
 982 ]])
 983 AT_DATA([[input.y]],
 984 [[%define var-dfg "gram"
 985 %%
 986 start: ;
 987 ]])
 988 AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
 989                  -Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
 990                  -Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \
 991                  -Fvar-fd=cmd-f -Dvar-fd=cmd-d   \
 992                  --skeleton ./skel.c input.y]])
 993 AT_CHECK([[cat input.tab.c]], [[0]],
 994 [[var-dd: cmd-d2
 995 var-ff: cmd-f2
 996 var-dfg: cmd-f
 997 var-fd: cmd-d
 998 ]])
 999
1000 AT_DATA([[input-dg.y]],
1001 [[%define var "gram"
1002 %%
1003 start: ;
1004 ]])
1005 AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
1006 [[input-dg.y:1.9-11: %define variable 'var' redefined
1007 <command line>:2: previous definition
1008 ]])
1009
1010 AT_DATA([[input-unused.y]],
1011 [[%%
1012 start: ;
1013 ]])
1014 AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [],
1015 [[<command line>:2: %define variable 'unused-d' is not used
1016 <command line>:3: %define variable 'unused-f' is not used
1017 ]])
1018
1019 AT_CLEANUP
1020
1021 ## --------------------------- ##
1022 ## %define Boolean variables.  ##
1023 ## --------------------------- ##
1024
1025 AT_SETUP([[%define Boolean variables]])
1026
1027 AT_DATA([Input.y],
1028 [[%language "Java"
1029 %define public "maybe"
1030 %define parser_class_name "Input"
1031 %%
1032 start: ;
1033 ]])
1034
1035 AT_BISON_CHECK([[Input.y]], [1], [],
1036 [[Input.y:2.9-14: invalid value for %define Boolean variable 'public'
1037 ]])
1038
1039 AT_CLEANUP
1040
1041 ## ------------------------ ##
1042 ## %define enum variables.  ##
1043 ## ------------------------ ##
1044
1045 AT_SETUP([[%define enum variables]])
1046
1047 # Front-end.
1048 AT_DATA([[input.y]],
1049 [[%define lr.default-reductions bogus
1050 %%
1051 start: ;
1052 ]])
1053 AT_BISON_CHECK([[input.y]], [[1]], [[]],
1054 [[input.y:1.9-29: invalid value for %define variable 'lr.default-reductions': 'bogus'
1055 input.y:1.9-29: accepted value: 'most'
1056 input.y:1.9-29: accepted value: 'consistent'
1057 input.y:1.9-29: accepted value: 'accepting'
1058 ]])
1059
1060 # Back-end.
1061 AT_DATA([[input.y]],
1062 [[%define api.push-pull neither
1063 %%
1064 start: ;
1065 ]])
1066 AT_BISON_CHECK([[input.y]], [1], [],
1067 [[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
1068 input.y:1.9-21: accepted value: 'pull'
1069 input.y:1.9-21: accepted value: 'push'
1070 input.y:1.9-21: accepted value: 'both'
1071 ]])
1072
1073 AT_CLEANUP
1074
1075 ## -------------------------------- ##
1076 ## %define backward compatibility.  ##
1077 ## -------------------------------- ##
1078
1079 AT_SETUP([[%define backward compatibility]])
1080
1081 # The error messages tell us whether underscores in these variables are
1082 # being converted to dashes.
1083
1084 AT_DATA([[input.y]],
1085 [[%define api.push_pull "neither"
1086 %%
1087 start: ;
1088 ]])
1089 AT_BISON_CHECK([[input.y]], [1], [],
1090 [[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
1091 input.y:1.9-21: accepted value: 'pull'
1092 input.y:1.9-21: accepted value: 'push'
1093 input.y:1.9-21: accepted value: 'both'
1094 ]])
1095
1096 AT_DATA([[input.y]],
1097 [[%define lr.keep_unreachable_states maybe
1098 %%
1099 start: ;
1100 ]])
1101 AT_BISON_CHECK([[input.y]], [1], [],
1102 [[input.y:1.9-34: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
1103 ]])
1104
1105 AT_DATA([[input.y]],
1106 [[%define namespace "foo"
1107 %define api.namespace "foo"
1108 %%
1109 start: ;
1110 ]])
1111 AT_BISON_CHECK([[input.y]], [1], [],
1112 [[input.y:2.9-21: %define variable 'api.namespace' redefined
1113 input.y:1.9-17: previous definition
1114 ]])
1115
1116 AT_DATA([[input.y]],
1117 [[%define foo_bar "baz"
1118 %%
1119 start: ;
1120 ]])
1121 AT_BISON_CHECK([[input.y]], [[1]], [],
1122 [[input.y:1.9-15: %define variable 'foo_bar' is not used
1123 ]])
1124
1125 AT_CLEANUP
1126
1127 ## ------------------------- ##
1128 ## Unused %define api.pure.  ##
1129 ## ------------------------- ##
1130
1131 AT_SETUP([[Unused %define api.pure]])
1132
1133 # AT_CHECK_API_PURE(DECLS, VALUE)
1134 # -------------------------------
1135 # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
1136 # are specified.
1137 m4_define([AT_CHECK_API_PURE],
1138 [
1139 AT_DATA([[input.y]],
1140 [[%define api.pure ]$2[
1141 ]$1[
1142 %%
1143 start: ;
1144 ]])
1145
1146 AT_BISON_CHECK([[input.y]], [[1]], [],
1147 [[input.y:1.9-16: %define variable 'api.pure' is not used
1148 ]])
1149 ])
1150
1151 AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
1152 AT_CHECK_API_PURE([[%language "c++" %defines]], [[false]])
1153 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
1154 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[false]])
1155 AT_CHECK_API_PURE([[%language "java"]], [[true]])
1156 AT_CHECK_API_PURE([[%language "java"]], [[false]])
1157
1158 AT_CLEANUP
1159
1160 ## -------------------------------- ##
1161 ## C++ namespace reference errors.  ##
1162 ## -------------------------------- ##
1163
1164 AT_SETUP([[C++ namespace reference errors]])
1165
1166 # AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
1167 # -------------------------------------------------------------
1168 # Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
1169 m4_define([AT_CHECK_NAMESPACE_ERROR],
1170 [
1171 AT_DATA([[input.y]],
1172 [[%language "C++"
1173 %defines
1174 %define api.namespace "]$1["
1175 %%
1176 start: ;
1177 ]])
1178
1179 AT_BISON_CHECK([[input.y]], [1], [],
1180 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
1181 [[input.y:3.9-21: ]b4_arg[
1182 ]])])
1183 ])
1184
1185 AT_CHECK_NAMESPACE_ERROR([[]],
1186                          [[namespace reference is empty]])
1187 AT_CHECK_NAMESPACE_ERROR([[                             ]],
1188                          [[namespace reference is empty]])
1189 AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
1190                          [[namespace reference has consecutive "::"]])
1191 AT_CHECK_NAMESPACE_ERROR([[foo::        ::bar]],
1192                          [[namespace reference has consecutive "::"]])
1193 AT_CHECK_NAMESPACE_ERROR([[::::bar]],
1194                          [[namespace reference has consecutive "::"]])
1195 AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
1196                          [[namespace reference has consecutive "::"]])
1197 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ::]],
1198                          [[namespace reference has consecutive "::"]],
1199                          [[namespace reference has a trailing "::"]])
1200 AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
1201                          [[namespace reference has a trailing "::"]])
1202 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ]],
1203                          [[namespace reference has a trailing "::"]])
1204 AT_CHECK_NAMESPACE_ERROR([[::]],
1205                          [[namespace reference has a trailing "::"]])
1206
1207 AT_CLEANUP
1208
1209 ## ------------------------ ##
1210 ## Bad character literals.  ##
1211 ## ------------------------ ##
1212
1213 # Bison used to accept character literals that were empty or contained
1214 # too many characters.
1215
1216 # FIXME: AT_DATA or some variant of AT_DATA may eventually permit
1217 # the final newline to be omitted.  See the threads starting at
1218 # <http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00019.html>.
1219
1220 AT_SETUP([[Bad character literals]])
1221
1222 AT_DATA([empty.y],
1223 [[%%
1224 start: '';
1225 start: '
1226 ]])
1227 AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
1228
1229 AT_BISON_CHECK([empty.y], [1], [],
1230 [[empty.y:2.8-9: warning: empty character literal
1231 empty.y:3.8-4.0: warning: empty character literal
1232 empty.y:3.8-4.0: missing "'" at end of line
1233 empty.y:4.8: warning: empty character literal
1234 empty.y:4.8: missing "'" at end of file
1235 ]])
1236
1237 AT_DATA([two.y],
1238 [[%%
1239 start: 'ab';
1240 start: 'ab
1241 ]])
1242 AT_CHECK([[perl -e "print 'start: \'ab';" >> two.y || exit 77]])
1243
1244 AT_BISON_CHECK([two.y], [1], [],
1245 [[two.y:2.8-11: warning: extra characters in character literal
1246 two.y:3.8-4.0: warning: extra characters in character literal
1247 two.y:3.8-4.0: missing "'" at end of line
1248 two.y:4.8-10: warning: extra characters in character literal
1249 two.y:4.8-10: missing "'" at end of file
1250 ]])
1251
1252 AT_DATA([three.y],
1253 [[%%
1254 start: 'abc';
1255 start: 'abc
1256 ]])
1257 AT_CHECK([[perl -e "print 'start: \'abc';" >> three.y || exit 77]])
1258
1259 AT_BISON_CHECK([three.y], [1], [],
1260 [[three.y:2.8-12: warning: extra characters in character literal
1261 three.y:3.8-4.0: warning: extra characters in character literal
1262 three.y:3.8-4.0: missing "'" at end of line
1263 three.y:4.8-11: warning: extra characters in character literal
1264 three.y:4.8-11: missing "'" at end of file
1265 ]])
1266
1267 AT_CLEANUP
1268
1269 ## ------------------------- ##
1270 ## Bad escapes in literals.  ##
1271 ## ------------------------- ##
1272
1273 AT_SETUP([[Bad escapes in literals]])
1274
1275 AT_DATA([input.y],
1276 [[%%
1277 start: '\777' '\0' '\xfff' '\x0'
1278        '\uffff' '\u0000' '\Uffffffff' '\U00000000'
1279        '\ ' '\A';
1280 ]])
1281
1282 # It is not easy to create special characters, we cannot even trust tr.
1283 # Beside we cannot even expect "echo '\0'" to output two characters
1284 # (well three with \n): at least Bash 3.2 converts the two-character
1285 # sequence "\0" into a single NUL character.
1286 AT_CHECK([[perl -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
1287            || exit 77]])
1288
1289 AT_BISON_CHECK([input.y], [1], [],
1290 [[input.y:2.9-12: invalid number after \-escape: 777
1291 input.y:2.8-13: warning: empty character literal
1292 input.y:2.16-17: invalid number after \-escape: 0
1293 input.y:2.15-18: warning: empty character literal
1294 input.y:2.21-25: invalid number after \-escape: xfff
1295 input.y:2.20-26: warning: empty character literal
1296 input.y:2.29-31: invalid number after \-escape: x0
1297 input.y:2.28-32: warning: empty character literal
1298 input.y:3.9-14: invalid number after \-escape: uffff
1299 input.y:3.8-15: warning: empty character literal
1300 input.y:3.18-23: invalid number after \-escape: u0000
1301 input.y:3.17-24: warning: empty character literal
1302 input.y:3.27-36: invalid number after \-escape: Uffffffff
1303 input.y:3.26-37: warning: empty character literal
1304 input.y:3.40-49: invalid number after \-escape: U00000000
1305 input.y:3.39-50: warning: empty character literal
1306 input.y:4.9-10: invalid character after \-escape: ' '
1307 input.y:4.8-11: warning: empty character literal
1308 input.y:4.14-15: invalid character after \-escape: A
1309 input.y:4.13-16: warning: empty character literal
1310 input.y:5.9-16: invalid character after \-escape: \t
1311 input.y:5.17: invalid character after \-escape: \f
1312 input.y:5.18: invalid character after \-escape: \0
1313 input.y:5.19: invalid character after \-escape: \001
1314 ]])
1315
1316 AT_CLEANUP
1317
1318 ## ------------------------- ##
1319 ## LAC: Errors for %define.  ##
1320 ## ------------------------- ##
1321
1322 AT_SETUP([[LAC: Errors for %define]])
1323
1324 AT_DATA([[input.y]],
1325 [[%%
1326 start: ;
1327 ]])
1328
1329 # parse.lac.* options are useless if LAC isn't actually activated.
1330 AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
1331                [[1]], [],
1332 [[<command line>:2: %define variable 'parse.lac.es-capacity-initial' is not used
1333 ]])
1334 AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
1335                [[1]], [],
1336 [[<command line>:2: %define variable 'parse.lac.memory-trace' is not used
1337 ]])
1338
1339 AT_CLEANUP
1340
1341 ## --------------------------------------------- ##
1342 ## -Werror is not affected by -Wnone and -Wall.  ##
1343 ## --------------------------------------------- ##
1344
1345 AT_SETUP([[-Werror is not affected by -Wnone and -Wall]])
1346
1347 AT_DATA([[input.y]],
1348 [[%%
1349 foo-bar: ;
1350 ]])
1351
1352 # -Werror is not enabled by -Wall or equivalent.
1353 AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]],
1354 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1355 ]])
1356 AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
1357 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1358 ]])
1359 AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
1360 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1361 ]])
1362
1363 # -Werror is not disabled by -Wnone or equivalent.
1364 AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]])
1365 AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]],
1366 [[bison: warnings being treated as errors
1367 input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1368 ]])
1369 [mv stderr experr]
1370 AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
1371
1372 AT_CLEANUP