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 {} foo baz
 282 %destructor {} bar
 283
 284 %%
 285 exp: bar;
 286 ]])
 287
 288 AT_BISON_CHECK([input.y], [1], [],
 289 [[input.y:2.16-18: symbol bar is used, but is not defined as a token and has no rules
 290 input.y:1.17-19: warning: symbol baz is used, but is not defined as a token and has no rules
 291 input.y:1.13-15: warning: symbol foo is used, but is not defined as a token and has no rules
 292 ]])
 293
 294 AT_CLEANUP
 295
 296
 297 ## ----------------------------------------------------- ##
 298 ## Unassociated types used for a printer or destructor.  ##
 299 ## ----------------------------------------------------- ##
 300
 301 AT_SETUP([Unassociated types used for a printer or destructor])
 302
 303 AT_DATA([[input.y]],
 304 [[%token <type1> tag1
 305 %type <type2> tag2
 306
 307 %printer { } <type1> <type3>
 308 %destructor { } <type2> <type4>
 309
 310 %%
 311
 312 exp: tag1 { $1; }
 313    | tag2 { $1; }
 314
 315 tag2: "a" { $$; }
 316 ]])
 317
 318 AT_BISON_CHECK([input.y], [0], [],
 319 [[input.y:4.22-28: warning: type <type3> is used, but is not associated to any symbol
 320 input.y:5.25-31: warning: type <type4> is used, but is not associated to any symbol
 321 ]])
 322
 323 AT_CLEANUP
 324
 325
 326 ## ---------------------------------------- ##
 327 ## Unused values with default %destructor.  ##
 328 ## ---------------------------------------- ##
 329
 330 AT_SETUP([Unused values with default %destructor])
 331
 332 AT_DATA([[input.y]],
 333 [[%destructor { destroy ($$); } <>
 334 %type <tag> tagged
 335
 336 %%
 337
 338 start: end end tagged tagged { $<tag>1; $3; } ;
 339 end: { } ;
 340 tagged: { } ;
 341 ]])
 342
 343 AT_BISON_CHECK([input.y], [0], [],
 344 [[input.y:6.8-45: warning: unset value: $$
 345 input.y:6.8-45: warning: unused value: $2
 346 input.y:7.6-8: warning: unset value: $$
 347 ]])
 348
 349 AT_DATA([[input.y]],
 350 [[%destructor { destroy ($$); } <*>
 351 %type <tag> tagged
 352
 353 %%
 354
 355 start: end end tagged tagged { $<tag>1; $3; } ;
 356 end: { } ;
 357 tagged: { } ;
 358 ]])
 359
 360 AT_BISON_CHECK([input.y], [0], [],
 361 [[input.y:6.8-45: warning: unused value: $4
 362 input.y:8.9-11: warning: unset value: $$
 363 ]])
 364
 365 AT_CLEANUP
 366
 367
 368 ## ----------------------------------------- ##
 369 ## Unused values with per-type %destructor.  ##
 370 ## ----------------------------------------- ##
 371
 372 AT_SETUP([Unused values with per-type %destructor])
 373
 374 AT_DATA([[input.y]],
 375 [[%destructor { destroy ($$); } <field1>
 376 %type <field1> start end
 377
 378 %%
 379
 380 start: end end { $1; } ;
 381 end: { }  ;
 382 ]])
 383
 384 AT_BISON_CHECK([input.y], [0], [],
 385 [[input.y:6.8-22: warning: unset value: $$
 386 input.y:6.8-22: warning: unused value: $2
 387 input.y:7.6-8: warning: unset value: $$
 388 ]])
 389
 390 AT_CLEANUP
 391
 392
 393 ## ---------------------- ##
 394 ## Incompatible Aliases.  ##
 395 ## ---------------------- ##
 396
 397 AT_SETUP([Incompatible Aliases])
 398
 399 AT_DATA([input.y],
 400 [[%token foo "foo"
 401
 402 %type <bar>       foo
 403 %printer {bar}    foo
 404 %destructor {bar} foo
 405 %left             foo
 406
 407 %type <baz>       "foo"
 408 %printer {baz}    "foo"
 409 %destructor {baz} "foo"
 410 %left             "foo"
 411
 412 %%
 413 exp: foo;
 414 ]])
 415
 416 AT_BISON_CHECK([input.y], [1], [],
 417 [[input.y:8.7-11: %type redeclaration for foo
 418 input.y:3.7-11: previous declaration
 419 input.y:10.13-17: %destructor redeclaration for foo
 420 input.y:5.13-17: previous declaration
 421 input.y:9.10-14: %printer redeclaration for foo
 422 input.y:4.10-14: previous declaration
 423 input.y:11.1-5: %left redeclaration for foo
 424 input.y:6.1-5: previous declaration
 425 ]])
 426
 427 AT_CLEANUP
 428
 429
 430
 431 ## ----------------------- ##
 432 ## Torturing the Scanner.  ##
 433 ## ----------------------- ##
 434
 435 # Be sure to compile and run, so that the C compiler checks what
 436 # we do.
 437
 438 AT_SETUP([Torturing the Scanner])
 439
 440 AT_BISON_OPTION_PUSHDEFS
 441 AT_DATA([input.y], [])
 442 AT_BISON_CHECK([input.y], [1], [],
 443 [[input.y:1.1: syntax error, unexpected end of file
 444 ]])
 445
 446
 447 AT_DATA([input.y],
 448 [{}
 449 ])
 450 AT_BISON_CHECK([input.y], [1], [],
 451 [[input.y:1.1-2: syntax error, unexpected {...}
 452 ]])
 453
 454
 455 AT_DATA_GRAMMAR([input.y],
 456 [[%{
 457 /* This is seen in GCC: a %{ and %} in middle of a comment. */
 458 const char *foo = "So %{ and %} can be here too.";
 459
 460 #if 0
 461 /* These examples test Bison while not stressing C compilers too much.
 462    Many C compilers mishandle backslash-newlines, so this part of the
 463    test is inside "#if 0".  The comment and string are written so that
 464    the "#endif" will be seen regardless of the C compiler bugs that we
 465    know about, namely:
 466
 467      HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
 468      comment.
 469
 470      The Apple Darwin compiler (as of late 2002) mishandles
 471      \\[newline]' within a character constant.
 472
 473    */
 474
 475 /\
 476 * A comment with backslash-newlines in it. %} *\
 477 \
 478 /
 479 /* { Close the above comment, if the C compiler mishandled it.  */
 480
 481 char str[] = "\\
 482 " A string with backslash-newlines in it %{ %} \\
 483 \
 484 "";
 485
 486 char apostrophe = '\'';
 487 #endif
 488
 489 #include <stdio.h>
 490 #include <stdlib.h>
 491 %}
 492 /* %{ and %} can be here too. */
 493
 494 %{
 495 /* Exercise pre-prologue dependency to %union.  */
 496 typedef int value;
 497 %}
 498
 499 /* Exercise M4 quoting: '@:>@@:>@', 0.  */
 500
 501 /* Also exercise %union. */
 502 %union
 503 {
 504   value ival; /* A comment to exercise an old bug. */
 505 };
 506
 507
 508 /* Exercise post-prologue dependency to %union.  */
 509 %{
 510 static YYSTYPE value_as_yystype (value val);
 511
 512 /* Exercise quotes in declarations.  */
 513 char quote[] = "@:>@@:>@,";
 514 %}
 515
 516 %{
 517 ]AT_YYERROR_DECLARE[
 518 ]AT_YYLEX_DECLARE[
 519 %}
 520
 521 %type <ival> '@<:@'
 522
 523 /* Exercise quotes in strings.  */
 524 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
 525
 526 %%
 527 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1.  */
 528 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
 529   {
 530     /* Exercise quotes in braces.  */
 531     char tmp[] = "@<:@%c@:>@,\n";
 532     printf (tmp, $1);
 533   }
 534 ;
 535
 536 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
 537 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
 538 output.or.oline.opt: ;|oline;;|output;;;
 539 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
 540 %%
 541 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2.  */
 542
 543 static YYSTYPE
 544 value_as_yystype (value val)
 545 {
 546   YYSTYPE res;
 547   res.ival = val;
 548   return res;
 549 }
 550 ]AT_YYERROR_DEFINE[
 551 static int
 552 yylex (void)
 553 {
 554   static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
 555 #output "; /* "
 556   */
 557   static size_t toknum;
 558   if (! (toknum < sizeof input))
 559     abort ();
 560   yylval = value_as_yystype (input[toknum]);
 561   return input[toknum++];
 562 }
 563 ]])
 564
 565 # Pacify Emacs'font-lock-mode: "
 566
 567 AT_DATA([main.c],
 568 [[typedef int value;
 569 #include "input.h"
 570
 571 int yyparse (void);
 572
 573 int
 574 main (void)
 575 {
 576   return yyparse ();
 577 }
 578 ]])
 579 AT_BISON_OPTION_POPDEFS
 580
 581 AT_BISON_CHECK([-d -v -o input.c input.y])
 582 AT_COMPILE([input.o], [-c input.c])
 583 AT_COMPILE([main.o], [-c main.c])
 584 AT_COMPILE([input], [input.o main.o])
 585 AT_PARSER_CHECK([./input], 0,
 586 [[[@<:@],
 587 ]])
 588
 589 AT_CLEANUP
 590
 591
 592 ## ---------------------- ##
 593 ## Typed symbol aliases.  ##
 594 ## ---------------------- ##
 595
 596 AT_SETUP([Typed symbol aliases])
 597
 598 # Bison 2.0 broke typed symbol aliases - ensure they work.
 599
 600 AT_DATA_GRAMMAR([input.y],
 601 [[%union
 602 {
 603   int val;
 604 };
 605 %token <val> MY_TOKEN "MY TOKEN"
 606 %type <val> exp
 607 %%
 608 exp: "MY TOKEN";
 609 %%
 610 ]])
 611
 612 AT_BISON_CHECK([-o input.c input.y])
 613
 614 AT_CLEANUP
 615
 616
 617 ## --------- ##
 618 ## Require.  ##
 619 ## --------- ##
 620
 621 m4_define([AT_CHECK_REQUIRE],
 622 [AT_SETUP([Require $1])
 623 AT_DATA_GRAMMAR([input.y],
 624 [[%require "$1";
 625 %%
 626 empty_file:;
 627 ]])
 628 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
 629 AT_CLEANUP
 630 ])
 631
 632 AT_CHECK_REQUIRE(1.0, 0)
 633 AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
 634 ## FIXME: Some day augment this version number.
 635 AT_CHECK_REQUIRE(100.0, 63)
 636
 637
 638 ## ------------------------------------- ##
 639 ## String aliases for character tokens.  ##
 640 ## ------------------------------------- ##
 641
 642 AT_SETUP([String aliases for character tokens])
 643
 644 # Bison once thought a character token and its alias were different
 645 # symbols with the same user token number.
 646
 647 AT_DATA_GRAMMAR([input.y],
 648 [[%token 'a' "a"
 649 %%
 650 start: 'a';
 651 %%
 652 ]])
 653
 654 AT_BISON_CHECK([-o input.c input.y])
 655
 656 AT_CLEANUP
 657
 658
 659 ## -------------- ##
 660 ## Symbol names.  ##
 661 ## -------------- ##
 662
 663 AT_SETUP([Symbols])
 664
 665 AT_BISON_OPTION_PUSHDEFS
 666 AT_DATA_GRAMMAR([input.y],
 667 [[%token WITH-DASH
 668 %token WITHOUT_DASH "WITHOUT-DASH"
 669 %token WITH.PERIOD
 670 %token WITHOUT_PERIOD "WITHOUT.PERIOD"
 671 %code {
 672   ]AT_YYERROR_DECLARE[
 673   ]AT_YYLEX_DECLARE[
 674 }
 675 %%
 676 start: with-dash without_dash with.period without_period;
 677 with-dash: WITH-DASH;
 678 without_dash: "WITHOUT-DASH";
 679 with.period: WITH.PERIOD;
 680 without_period: "WITHOUT.PERIOD";
 681 %%
 682 ]AT_YYERROR_DEFINE[
 683 ]AT_YYLEX_DEFINE[
 684 ]])
 685 AT_BISON_OPTION_POPDEFS
 686
 687 # POSIX Yacc accept periods, but not dashes.
 688 AT_BISON_CHECK([--yacc input.y], [1], [],
 689 [[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH
 690 input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash
 691 ]])
 692
 693 # So warn about them.
 694 AT_BISON_CHECK([-Wyacc input.y], [], [],
 695 [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH
 696 input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash
 697 ]])
 698
 699 # Dashes are fine for GNU Bison.
 700 AT_BISON_CHECK([-o input.c input.y])
 701
 702 # Make sure we don't export silly token identifiers with periods or dashes.
 703 AT_COMPILE([input.o], [-c input.c])
 704
 705
 706 # Periods are genuine letters, they can start identifiers.
 707 # Digits and dashes cannot.
 708 AT_DATA_GRAMMAR([input.y],
 709 [[%token .GOOD
 710          -GOOD
 711          1NV4L1D
 712          -123
 713 %%
 714 start: .GOOD GOOD
 715 ]])
 716 AT_BISON_CHECK([-o input.c input.y], [1], [],
 717 [[input.y:10.10: invalid character: '-'
 718 input.y:11.10-16: invalid identifier: '1NV4L1D'
 719 input.y:12.10: invalid character: '-'
 720 ]])
 721
 722 AT_CLEANUP
 723
 724
 725 ## ----------------- ##
 726 ## Numbered tokens.  ##
 727 ## ----------------- ##
 728
 729 AT_SETUP([Numbered tokens])
 730
 731 AT_DATA_GRAMMAR([redecl.y],
 732 [[%token DECIMAL_1     11259375
 733          HEXADECIMAL_1 0xabcdef
 734          HEXADECIMAL_2 0xFEDCBA
 735          DECIMAL_2     16702650
 736 %%
 737 start: DECIMAL_1 HEXADECIMAL_2;
 738 ]])
 739
 740 AT_BISON_CHECK([redecl.y], [1], [],
 741 [[redecl.y:10.10-22: user token number 11259375 redeclaration for HEXADECIMAL_1
 742 redecl.y:9.8-16: previous declaration for DECIMAL_1
 743 redecl.y:12.10-18: user token number 16702650 redeclaration for DECIMAL_2
 744 redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
 745 ]])
 746
 747 AT_DATA_GRAMMAR([too-large.y],
 748 [[%token TOO_LARGE_DEC 999999999999999999999
 749          TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
 750 %%
 751 start: TOO_LARGE_DEC TOO_LARGE_HEX
 752 %%
 753 ]])
 754
 755 AT_BISON_CHECK([too-large.y], [1], [],
 756 [[too-large.y:9.22-42: integer out of range: '999999999999999999999'
 757 too-large.y:10.24-44: integer out of range: '0xFFFFFFFFFFFFFFFFFFF'
 758 ]])
 759
 760 AT_CLEANUP
 761
 762
 763 ## --------------------- ##
 764 ## Unclosed constructs.  ##
 765 ## --------------------- ##
 766
 767 AT_SETUP([Unclosed constructs])
 768
 769 # Bison's scan-gram.l once forgot to STRING_FINISH some unclosed
 770 # constructs, so they were prepended to whatever it STRING_GROW'ed
 771 # next.  It also threw them away rather than returning them to the
 772 # parser.  The effect was confusing subsequent error messages.
 773
 774 AT_DATA([input.y],
 775 [[%token A "a
 776 %token B "b"
 777 %token AB "ab" // Used to complain that "ab" was already used.
 778 %token C '1
 779 %token TWO "2"
 780 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
 781
 782 %%
 783
 784 start: ;
 785
 786 // Used to report a syntax error because it didn't see any kind of symbol
 787 // identifier.
 788 %type <f> 'a
 789 ;
 790 %type <f> "a
 791 ;
 792 // Used to report a syntax error because it didn't see braced code.
 793 %destructor { free ($$)
 794 ]])
 795
 796 AT_BISON_CHECK([-o input.c input.y], 1, [],
 797 [[input.y:1.10-2.0: missing '"' at end of line
 798 input.y:4.10-5.0: missing "'" at end of line
 799 input.y:14.11-15.0: missing "'" at end of line
 800 input.y:16.11-17.0: missing '"' at end of line
 801 input.y:19.13-20.0: missing '}' at end of file
 802 input.y:20.1: syntax error, unexpected end of file
 803 ]])
 804
 805 AT_CLEANUP
 806
 807
 808 ## ------------------------- ##
 809 ## %start after first rule.  ##
 810 ## ------------------------- ##
 811
 812 AT_SETUP([%start after first rule])
 813
 814 # Bison once complained that a %start after the first rule was a
 815 # redeclaration of the start symbol.
 816
 817 AT_DATA([input.y],
 818 [[%%
 819 false_start: ;
 820 start: false_start ;
 821 %start start;
 822 ]])
 823
 824 AT_BISON_CHECK([-o input.c input.y])
 825
 826 AT_CLEANUP
 827
 828
 829 ## --------------------- ##
 830 ## %prec takes a token.  ##
 831 ## --------------------- ##
 832
 833 AT_SETUP([%prec takes a token])
 834
 835 # Bison once allowed %prec sym where sym was a nonterminal.
 836
 837 AT_DATA([input.y],
 838 [[%%
 839 start: PREC %prec PREC ;
 840 PREC: ;
 841 ]])
 842
 843 AT_BISON_CHECK([input.y], [1], [],
 844 [[input.y:3.1-4: rule given for PREC, which is a token
 845 ]])
 846
 847 AT_CLEANUP
 848
 849
 850 ## ------------------------------- ##
 851 ## %prec's token must be defined.  ##
 852 ## ------------------------------- ##
 853
 854 AT_SETUP([[%prec's token must be defined]])
 855
 856 # According to POSIX, a %prec token must be defined separately.
 857
 858 AT_DATA([[input.y]],
 859 [[%%
 860 start: %prec PREC ;
 861 ]])
 862
 863 AT_BISON_CHECK([[input.y]], [[0]], [],
 864 [[input.y:2.8-17: warning: token for %prec is not defined: PREC
 865 ]])
 866
 867 AT_CLEANUP
 868
 869
 870 ## -------------------------------- ##
 871 ## Reject unused %code qualifiers.  ##
 872 ## -------------------------------- ##
 873
 874 AT_SETUP([Reject unused %code qualifiers])
 875
 876 AT_DATA([input-c.y],
 877 [[%code q {}
 878 %code bad {}
 879 %code bad {}
 880 %code format {}
 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:3.7-9: %code qualifier 'bad' is not used
 888 input-c.y:4.7-12: %code qualifier 'format' is not used
 889 ]])
 890
 891 AT_DATA([input-c-glr.y],
 892 [[%code q {}
 893 %code bad {}
 894  %code bad {}
 895 %%
 896 start: ;
 897 ]])
 898 AT_BISON_CHECK([[input-c-glr.y]], [[1]], [],
 899 [[input-c-glr.y:1.7: %code qualifier 'q' is not used
 900 input-c-glr.y:2.7-9: %code qualifier 'bad' is not used
 901 input-c-glr.y:3.8-10: %code qualifier 'bad' is not used
 902 ]])
 903
 904 AT_DATA([input-c++.y],
 905 [[%code q {}
 906 %code bad {}
 907  %code q {}
 908 %%
 909 start: ;
 910 ]])
 911 AT_BISON_CHECK([[input-c++.y]], [[1]], [],
 912 [[input-c++.y:1.7: %code qualifier 'q' is not used
 913 input-c++.y:2.7-9: %code qualifier 'bad' is not used
 914 input-c++.y:3.8: %code qualifier 'q' is not used
 915 ]])
 916
 917 AT_DATA([input-c++-glr.y],
 918 [[%code bad {}
 919 %code q {}
 920 %code q {}
 921 %%
 922 start: ;
 923 ]])
 924 AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [],
 925 [[input-c++-glr.y:1.7-9: %code qualifier 'bad' is not used
 926 input-c++-glr.y:2.7: %code qualifier 'q' is not used
 927 input-c++-glr.y:3.7: %code qualifier 'q' is not used
 928 ]])
 929
 930 AT_DATA([special-char-@@.y],
 931 [[%code bad {}
 932 %code q {}
 933 %code q {}
 934 %%
 935 start: ;
 936 ]])
 937 AT_BISON_CHECK([[special-char-@@.y]], [[1]], [],
 938 [[special-char-@@.y:1.7-9: %code qualifier 'bad' is not used
 939 special-char-@@.y:2.7: %code qualifier 'q' is not used
 940 special-char-@@.y:3.7: %code qualifier 'q' is not used
 941 ]])
 942
 943 AT_DATA([special-char-@:>@.y],
 944 [[%code bad {}
 945 %code q {}
 946 %code q {}
 947 %%
 948 start: ;
 949 ]])
 950 AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [],
 951 [[special-char-@:>@.y:1.7-9: %code qualifier 'bad' is not used
 952 special-char-@:>@.y:2.7: %code qualifier 'q' is not used
 953 special-char-@:>@.y:3.7: %code qualifier 'q' is not used
 954 ]])
 955
 956 AT_CLEANUP
 957
 958
 959 ## ---------------- ##
 960 ## %define errors.  ##
 961 ## ---------------- ##
 962
 963 AT_SETUP([%define errors])
 964
 965 AT_DATA([input-redefined.y],
 966 [[%define var "value1"
 967 %define var "value1"
 968  %define var "value2"
 969 %define special1 "@:>@"
 970 %define special2 "@<:@"
 971 %%
 972 start: ;
 973 ]])
 974
 975 AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
 976 [[input-redefined.y:2.9-11: %define variable 'var' redefined
 977 input-redefined.y:1.9-11: previous definition
 978 input-redefined.y:3.10-12: %define variable 'var' redefined
 979 input-redefined.y:2.9-11: previous definition
 980 ]])
 981
 982 AT_DATA([input-unused.y],
 983 [[%define var "value"
 984 %%
 985 start: ;
 986 ]])
 987
 988 AT_BISON_CHECK([[input-unused.y]], [[1]], [],
 989 [[input-unused.y:1.9-11: %define variable 'var' is not used
 990 ]])
 991
 992 AT_CLEANUP
 993
 994
 995 ## ----------------------------------- ##
 996 ## %define, --define, --force-define.  ##
 997 ## ----------------------------------- ##
 998
 999 AT_SETUP([[%define, --define, --force-define]])
1000
1001 AT_DATA([[skel.c]],
1002 [[m4@&t@_divert_push(0)@
1003 @output(b4_parser_file_name@)@
1004 [var-dd: ]b4_percent_define_get([[var-dd]])[
1005 var-ff: ]b4_percent_define_get([[var-ff]])[
1006 var-dfg: ]b4_percent_define_get([[var-dfg]])[
1007 var-fd: ]b4_percent_define_get([[var-fd]])
1008 m4@&t@_divert_pop(0)
1009 ]])
1010 AT_DATA([[input.y]],
1011 [[%define var-dfg "gram"
1012 %%
1013 start: ;
1014 ]])
1015 AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
1016                  -Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
1017                  -Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \
1018                  -Fvar-fd=cmd-f -Dvar-fd=cmd-d   \
1019                  --skeleton ./skel.c input.y]])
1020 AT_CHECK([[cat input.tab.c]], [[0]],
1021 [[var-dd: cmd-d2
1022 var-ff: cmd-f2
1023 var-dfg: cmd-f
1024 var-fd: cmd-d
1025 ]])
1026
1027 AT_DATA([[input-dg.y]],
1028 [[%define var "gram"
1029 %%
1030 start: ;
1031 ]])
1032 AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
1033 [[input-dg.y:1.9-11: %define variable 'var' redefined
1034 <command line>:2: previous definition
1035 ]])
1036
1037 AT_DATA([[input-unused.y]],
1038 [[%%
1039 start: ;
1040 ]])
1041 AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [],
1042 [[<command line>:2: %define variable 'unused-d' is not used
1043 <command line>:3: %define variable 'unused-f' is not used
1044 ]])
1045
1046 AT_CLEANUP
1047
1048 ## --------------------------- ##
1049 ## %define Boolean variables.  ##
1050 ## --------------------------- ##
1051
1052 AT_SETUP([[%define Boolean variables]])
1053
1054 AT_DATA([Input.y],
1055 [[%language "Java"
1056 %define public "maybe"
1057 %define parser_class_name "Input"
1058 %%
1059 start: ;
1060 ]])
1061
1062 AT_BISON_CHECK([[Input.y]], [1], [],
1063 [[Input.y:2.9-14: invalid value for %define Boolean variable 'public'
1064 ]])
1065
1066 AT_CLEANUP
1067
1068 ## ------------------------ ##
1069 ## %define enum variables.  ##
1070 ## ------------------------ ##
1071
1072 AT_SETUP([[%define enum variables]])
1073
1074 # Front-end.
1075 AT_DATA([[input.y]],
1076 [[%define lr.default-reductions bogus
1077 %%
1078 start: ;
1079 ]])
1080 AT_BISON_CHECK([[input.y]], [[1]], [[]],
1081 [[input.y:1.9-29: invalid value for %define variable 'lr.default-reductions': 'bogus'
1082 input.y:1.9-29: accepted value: 'most'
1083 input.y:1.9-29: accepted value: 'consistent'
1084 input.y:1.9-29: accepted value: 'accepting'
1085 ]])
1086
1087 # Back-end.
1088 AT_DATA([[input.y]],
1089 [[%define api.push-pull neither
1090 %%
1091 start: ;
1092 ]])
1093 AT_BISON_CHECK([[input.y]], [1], [],
1094 [[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
1095 input.y:1.9-21: accepted value: 'pull'
1096 input.y:1.9-21: accepted value: 'push'
1097 input.y:1.9-21: accepted value: 'both'
1098 ]])
1099
1100 AT_CLEANUP
1101
1102 ## -------------------------------- ##
1103 ## %define backward compatibility.  ##
1104 ## -------------------------------- ##
1105
1106 AT_SETUP([[%define backward compatibility]])
1107
1108 # The error messages tell us whether underscores in these variables are
1109 # being converted to dashes.
1110
1111 AT_DATA([[input.y]],
1112 [[%define api.push_pull "neither"
1113 %%
1114 start: ;
1115 ]])
1116 AT_BISON_CHECK([[input.y]], [1], [],
1117 [[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
1118 input.y:1.9-21: accepted value: 'pull'
1119 input.y:1.9-21: accepted value: 'push'
1120 input.y:1.9-21: accepted value: 'both'
1121 ]])
1122
1123 AT_DATA([[input.y]],
1124 [[%define lr.keep_unreachable_states maybe
1125 %%
1126 start: ;
1127 ]])
1128 AT_BISON_CHECK([[input.y]], [1], [],
1129 [[input.y:1.9-34: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
1130 ]])
1131
1132 AT_DATA([[input.y]],
1133 [[%define namespace "foo"
1134 %define api.namespace "foo"
1135 %%
1136 start: ;
1137 ]])
1138 AT_BISON_CHECK([[input.y]], [1], [],
1139 [[input.y:2.9-21: %define variable 'api.namespace' redefined
1140 input.y:1.9-17: previous definition
1141 ]])
1142
1143 AT_DATA([[input.y]],
1144 [[%define foo_bar "baz"
1145 %%
1146 start: ;
1147 ]])
1148 AT_BISON_CHECK([[input.y]], [[1]], [],
1149 [[input.y:1.9-15: %define variable 'foo_bar' is not used
1150 ]])
1151
1152 AT_CLEANUP
1153
1154 ## ------------------------- ##
1155 ## Unused %define api.pure.  ##
1156 ## ------------------------- ##
1157
1158 AT_SETUP([[Unused %define api.pure]])
1159
1160 # AT_CHECK_API_PURE(DECLS, VALUE)
1161 # -------------------------------
1162 # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
1163 # are specified.
1164 m4_define([AT_CHECK_API_PURE],
1165 [
1166 AT_DATA([[input.y]],
1167 [[%define api.pure ]$2[
1168 ]$1[
1169 %%
1170 start: ;
1171 ]])
1172
1173 AT_BISON_CHECK([[input.y]], [[1]], [],
1174 [[input.y:1.9-16: %define variable 'api.pure' is not used
1175 ]])
1176 ])
1177
1178 AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
1179 AT_CHECK_API_PURE([[%language "c++" %defines]], [[false]])
1180 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
1181 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[false]])
1182 AT_CHECK_API_PURE([[%language "java"]], [[true]])
1183 AT_CHECK_API_PURE([[%language "java"]], [[false]])
1184
1185 AT_CLEANUP
1186
1187 ## -------------------------------- ##
1188 ## C++ namespace reference errors.  ##
1189 ## -------------------------------- ##
1190
1191 AT_SETUP([[C++ namespace reference errors]])
1192
1193 # AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
1194 # -------------------------------------------------------------
1195 # Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
1196 m4_define([AT_CHECK_NAMESPACE_ERROR],
1197 [
1198 AT_DATA([[input.y]],
1199 [[%language "C++"
1200 %defines
1201 %define api.namespace "]$1["
1202 %%
1203 start: ;
1204 ]])
1205
1206 AT_BISON_CHECK([[input.y]], [1], [],
1207 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
1208 [[input.y:3.9-21: ]b4_arg[
1209 ]])])
1210 ])
1211
1212 AT_CHECK_NAMESPACE_ERROR([[]],
1213                          [[namespace reference is empty]])
1214 AT_CHECK_NAMESPACE_ERROR([[                             ]],
1215                          [[namespace reference is empty]])
1216 AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
1217                          [[namespace reference has consecutive "::"]])
1218 AT_CHECK_NAMESPACE_ERROR([[foo::        ::bar]],
1219                          [[namespace reference has consecutive "::"]])
1220 AT_CHECK_NAMESPACE_ERROR([[::::bar]],
1221                          [[namespace reference has consecutive "::"]])
1222 AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
1223                          [[namespace reference has consecutive "::"]])
1224 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ::]],
1225                          [[namespace reference has consecutive "::"]],
1226                          [[namespace reference has a trailing "::"]])
1227 AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
1228                          [[namespace reference has a trailing "::"]])
1229 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ]],
1230                          [[namespace reference has a trailing "::"]])
1231 AT_CHECK_NAMESPACE_ERROR([[::]],
1232                          [[namespace reference has a trailing "::"]])
1233
1234 AT_CLEANUP
1235
1236 ## ------------------------ ##
1237 ## Bad character literals.  ##
1238 ## ------------------------ ##
1239
1240 # Bison used to accept character literals that were empty or contained
1241 # too many characters.
1242
1243 # FIXME: AT_DATA or some variant of AT_DATA may eventually permit
1244 # the final newline to be omitted.  See the threads starting at
1245 # <http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00019.html>.
1246
1247 AT_SETUP([[Bad character literals]])
1248
1249 AT_DATA([empty.y],
1250 [[%%
1251 start: '';
1252 start: '
1253 ]])
1254 AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
1255
1256 AT_BISON_CHECK([empty.y], [1], [],
1257 [[empty.y:2.8-9: warning: empty character literal
1258 empty.y:3.8-4.0: warning: empty character literal
1259 empty.y:3.8-4.0: missing "'" at end of line
1260 empty.y:4.8: warning: empty character literal
1261 empty.y:4.8: missing "'" at end of file
1262 ]])
1263
1264 AT_DATA([two.y],
1265 [[%%
1266 start: 'ab';
1267 start: 'ab
1268 ]])
1269 AT_CHECK([[perl -e "print 'start: \'ab';" >> two.y || exit 77]])
1270
1271 AT_BISON_CHECK([two.y], [1], [],
1272 [[two.y:2.8-11: warning: extra characters in character literal
1273 two.y:3.8-4.0: warning: extra characters in character literal
1274 two.y:3.8-4.0: missing "'" at end of line
1275 two.y:4.8-10: warning: extra characters in character literal
1276 two.y:4.8-10: missing "'" at end of file
1277 ]])
1278
1279 AT_DATA([three.y],
1280 [[%%
1281 start: 'abc';
1282 start: 'abc
1283 ]])
1284 AT_CHECK([[perl -e "print 'start: \'abc';" >> three.y || exit 77]])
1285
1286 AT_BISON_CHECK([three.y], [1], [],
1287 [[three.y:2.8-12: warning: extra characters in character literal
1288 three.y:3.8-4.0: warning: extra characters in character literal
1289 three.y:3.8-4.0: missing "'" at end of line
1290 three.y:4.8-11: warning: extra characters in character literal
1291 three.y:4.8-11: missing "'" at end of file
1292 ]])
1293
1294 AT_CLEANUP
1295
1296 ## ------------------------- ##
1297 ## Bad escapes in literals.  ##
1298 ## ------------------------- ##
1299
1300 AT_SETUP([[Bad escapes in literals]])
1301
1302 AT_DATA([input.y],
1303 [[%%
1304 start: '\777' '\0' '\xfff' '\x0'
1305        '\uffff' '\u0000' '\Uffffffff' '\U00000000'
1306        '\ ' '\A';
1307 ]])
1308
1309 # It is not easy to create special characters, we cannot even trust tr.
1310 # Beside we cannot even expect "echo '\0'" to output two characters
1311 # (well three with \n): at least Bash 3.2 converts the two-character
1312 # sequence "\0" into a single NUL character.
1313 AT_CHECK([[perl -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
1314            || exit 77]])
1315
1316 AT_BISON_CHECK([input.y], [1], [],
1317 [[input.y:2.9-12: invalid number after \-escape: 777
1318 input.y:2.8-13: warning: empty character literal
1319 input.y:2.16-17: invalid number after \-escape: 0
1320 input.y:2.15-18: warning: empty character literal
1321 input.y:2.21-25: invalid number after \-escape: xfff
1322 input.y:2.20-26: warning: empty character literal
1323 input.y:2.29-31: invalid number after \-escape: x0
1324 input.y:2.28-32: warning: empty character literal
1325 input.y:3.9-14: invalid number after \-escape: uffff
1326 input.y:3.8-15: warning: empty character literal
1327 input.y:3.18-23: invalid number after \-escape: u0000
1328 input.y:3.17-24: warning: empty character literal
1329 input.y:3.27-36: invalid number after \-escape: Uffffffff
1330 input.y:3.26-37: warning: empty character literal
1331 input.y:3.40-49: invalid number after \-escape: U00000000
1332 input.y:3.39-50: warning: empty character literal
1333 input.y:4.9-10: invalid character after \-escape: ' '
1334 input.y:4.8-11: warning: empty character literal
1335 input.y:4.14-15: invalid character after \-escape: A
1336 input.y:4.13-16: warning: empty character literal
1337 input.y:5.9-16: invalid character after \-escape: \t
1338 input.y:5.17: invalid character after \-escape: \f
1339 input.y:5.18: invalid character after \-escape: \0
1340 input.y:5.19: invalid character after \-escape: \001
1341 ]])
1342
1343 AT_CLEANUP
1344
1345 ## ------------------------- ##
1346 ## LAC: Errors for %define.  ##
1347 ## ------------------------- ##
1348
1349 AT_SETUP([[LAC: Errors for %define]])
1350
1351 AT_DATA([[input.y]],
1352 [[%%
1353 start: ;
1354 ]])
1355
1356 # parse.lac.* options are useless if LAC isn't actually activated.
1357 AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
1358                [[1]], [],
1359 [[<command line>:2: %define variable 'parse.lac.es-capacity-initial' is not used
1360 ]])
1361 AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
1362                [[1]], [],
1363 [[<command line>:2: %define variable 'parse.lac.memory-trace' is not used
1364 ]])
1365
1366 AT_CLEANUP
1367
1368 ## --------------------------------------------- ##
1369 ## -Werror is not affected by -Wnone and -Wall.  ##
1370 ## --------------------------------------------- ##
1371
1372 AT_SETUP([[-Werror is not affected by -Wnone and -Wall]])
1373
1374 AT_DATA([[input.y]],
1375 [[%%
1376 foo-bar: ;
1377 ]])
1378
1379 # -Werror is not enabled by -Wall or equivalent.
1380 AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]],
1381 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1382 ]])
1383 AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
1384 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1385 ]])
1386 AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
1387 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1388 ]])
1389
1390 # -Werror is not disabled by -Wnone or equivalent.
1391 AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]])
1392 AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]],
1393 [[bison: warnings being treated as errors
1394 input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
1395 ]])
1396 [mv stderr experr]
1397 AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
1398
1399 AT_CLEANUP