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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: $$ for the midrule at $2 of 'exp' has no declared type
62 input.y:5.24-25: $2 of 'exp' has no declared type
63 input.y:5.6-32: warning: type clash on default action: <bar> != <> [-Wother]
64 input.y:6.6-8: warning: type clash on default action: <bar> != <> [-Wother]
65 input.y:7.5: warning: empty rule for typed nonterminal, and no action [-Wother]
66 ]])
67
68 AT_CLEANUP
69
70
71 # _AT_UNUSED_VALUES_DECLARATIONS()
72 # --------------------------------
73 # Generate the token, type, and destructor
74 # declarations for the unused values tests.
75 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
76 [[[%token <integer> INT;
77 %type <integer> a b c d e f g h i j k l;
78 %destructor { destroy ($$); } 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: $]$[ [-Wother]
117 input.y:11.10-32: warning: unused value: $]1[ [-Wother]
118 input.y:11.10-32: warning: unused value: $]3[ [-Wother]
119 input.y:11.10-32: warning: unused value: $]5[ [-Wother]
120 input.y:12.9: warning: empty rule for typed nonterminal, and no action [-Wother]
121 ]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$ [-Wmidrule-values]
122 input.y:13.26-41: warning: unset value: $$ [-Wmidrule-values]
123 ]]])[[input.y:13.10-62: warning: unset value: $]$[ [-Wother]
124 input.y:13.10-62: warning: unused value: $]3[ [-Wother]
125 input.y:13.10-62: warning: unused value: $]5[ [-Wother]
126 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$ [-Wmidrule-values]
127 ]]])[[input.y:14.10-49: warning: unset value: $]$[ [-Wother]
128 input.y:14.10-49: warning: unused value: $]3[ [-Wother]
129 input.y:14.10-49: warning: unused value: $]5[ [-Wother]
130 input.y:15.10-37: warning: unset value: $]$[ [-Wother]
131 input.y:15.10-37: warning: unused value: $]3[ [-Wother]
132 input.y:15.10-37: warning: unused value: $]5[ [-Wother]
133 input.y:17.10-58: warning: unset value: $]$[ [-Wother]
134 input.y:17.10-58: warning: unused value: $]1[ [-Wother]
135 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[ [-Wmidrule-values]
136 ]]])[[input.y:17.10-58: warning: unused value: $]3[ [-Wother]
137 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[ [-Wmidrule-values]
138 ]]])[[input.y:17.10-58: warning: unused value: $]5[ [-Wother]
139 input.y:18.10-72: warning: unset value: $]$[ [-Wother]
140 input.y:18.10-72: warning: unused value: $]1[ [-Wother]
141 input.y:18.10-72: warning: unused value: $]3[ [-Wother]
142 ]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[ [-Wmidrule-values]
143 ]]])[[input.y:18.10-72: warning: unused value: $]5[ [-Wother]
144 ]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[ [-Wmidrule-values]
145 ]]])[[input.y:21.10-68: warning: unset value: $]$[ [-Wother]
146 input.y:21.10-68: warning: unused value: $]1[ [-Wother]
147 input.y:21.10-68: warning: unused value: $]2[ [-Wother]
148 ]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[ [-Wmidrule-values]
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 [-Wother]
291 input.y:1.13-15: warning: symbol foo is used, but is not defined as a token and has no rules [-Wother]
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 [-Wother]
320 input.y:5.25-31: warning: type <type4> is used, but is not associated to any symbol [-Wother]
321 ]])
322
323 AT_CLEANUP
324
325
326 ## --------------------------------- ##
327 ## Useless printers or destructors. ##
328 ## --------------------------------- ##
329
330 AT_SETUP([Useless printers or destructors])
331
332 AT_DATA([[input.y]],
333 [[%token <type1> token1
334 %token <type2> token2
335 %token <type3> token3
336 %token <type4> token4
337 %token <type5> token51 token52
338 %token <type6> token61 token62
339 %token <type7> token7
340
341 %printer {} token1
342 %destructor {} token2
343 %printer {} token51
344 %destructor {} token61
345
346 %printer {} token7
347
348 %printer {} <type1>
349 %destructor {} <type2>
350 %printer {} <type3>
351 %destructor {} <type4>
352
353 %printer {} <type5>
354 %destructor {} <type6>
355
356 %destructor {} <type7>
357
358 %%
359 exp: "a";
360 ]])
361
362 AT_BISON_CHECK([input.y], [0], [],
363 [[input.y:16.13-19: warning: useless %printer for type <type1> [-Wother]
364 input.y:17.16-22: warning: useless %destructor for type <type2> [-Wother]
365 ]])
366
367
368 AT_CLEANUP
369
370
371 ## ---------------------------------------- ##
372 ## Unused values with default %destructor. ##
373 ## ---------------------------------------- ##
374
375 AT_SETUP([Unused values with default %destructor])
376
377 AT_DATA([[input.y]],
378 [[%destructor { destroy ($$); } <>
379 %type <tag> tagged
380
381 %%
382
383 start: end end tagged tagged { $<tag>1; $3; } ;
384 end: { } ;
385 tagged: { } ;
386 ]])
387
388 AT_BISON_CHECK([input.y], [0], [],
389 [[input.y:6.8-45: warning: unset value: $$ [-Wother]
390 input.y:6.8-45: warning: unused value: $2 [-Wother]
391 input.y:7.6-8: warning: unset value: $$ [-Wother]
392 ]])
393
394 AT_DATA([[input.y]],
395 [[%destructor { destroy ($$); } <*>
396 %type <tag> tagged
397
398 %%
399
400 start: end end tagged tagged { $<tag>1; $3; } ;
401 end: { } ;
402 tagged: { } ;
403 ]])
404
405 AT_BISON_CHECK([input.y], [0], [],
406 [[input.y:6.8-45: warning: unused value: $4 [-Wother]
407 input.y:8.9-11: warning: unset value: $$ [-Wother]
408 ]])
409
410 AT_CLEANUP
411
412
413 ## ----------------------------------------- ##
414 ## Unused values with per-type %destructor. ##
415 ## ----------------------------------------- ##
416
417 AT_SETUP([Unused values with per-type %destructor])
418
419 AT_DATA([[input.y]],
420 [[%destructor { destroy ($$); } <field1>
421 %type <field1> start end
422
423 %%
424
425 start: end end { $1; } ;
426 end: { } ;
427 ]])
428
429 AT_BISON_CHECK([input.y], [0], [],
430 [[input.y:6.8-22: warning: unset value: $$ [-Wother]
431 input.y:6.8-22: warning: unused value: $2 [-Wother]
432 input.y:7.6-8: warning: unset value: $$ [-Wother]
433 ]])
434
435 AT_CLEANUP
436
437
438 ## ---------------------- ##
439 ## Incompatible Aliases. ##
440 ## ---------------------- ##
441
442 AT_SETUP([Incompatible Aliases])
443
444 AT_DATA([input.y],
445 [[%token foo "foo"
446
447 %type <bar> foo
448 %printer {bar} foo
449 %destructor {bar} foo
450 %left foo
451
452 %type <baz> "foo"
453 %printer {baz} "foo"
454 %destructor {baz} "foo"
455 %left "foo"
456
457 %%
458 exp: foo;
459 ]])
460
461 AT_BISON_CHECK([input.y], [1], [],
462 [[input.y:8.7-11: %type redeclaration for foo
463 input.y:3.7-11: previous declaration
464 input.y:10.13-17: %destructor redeclaration for foo
465 input.y:5.13-17: previous declaration
466 input.y:9.10-14: %printer redeclaration for foo
467 input.y:4.10-14: previous declaration
468 input.y:11.1-5: %left redeclaration for foo
469 input.y:6.1-5: previous declaration
470 ]])
471
472 AT_CLEANUP
473
474
475
476 ## ----------------------- ##
477 ## Torturing the Scanner. ##
478 ## ----------------------- ##
479
480 # Be sure to compile and run, so that the C compiler checks what
481 # we do.
482
483 AT_SETUP([Torturing the Scanner])
484
485 AT_BISON_OPTION_PUSHDEFS
486 AT_DATA([input.y], [])
487 AT_BISON_CHECK([input.y], [1], [],
488 [[input.y:1.1: syntax error, unexpected end of file
489 ]])
490
491
492 AT_DATA([input.y],
493 [{}
494 ])
495 AT_BISON_CHECK([input.y], [1], [],
496 [[input.y:1.1-2: syntax error, unexpected {...}
497 ]])
498
499
500 AT_DATA_GRAMMAR([input.y],
501 [[%{
502 /* This is seen in GCC: a %{ and %} in middle of a comment. */
503 const char *foo = "So %{ and %} can be here too.";
504
505 #if 0
506 /* These examples test Bison while not stressing C compilers too much.
507 Many C compilers mishandle backslash-newlines, so this part of the
508 test is inside "#if 0". The comment and string are written so that
509 the "#endif" will be seen regardless of the C compiler bugs that we
510 know about, namely:
511
512 HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
513 comment.
514
515 The Apple Darwin compiler (as of late 2002) mishandles
516 \\[newline]' within a character constant.
517
518 */
519
520 /\
521 * A comment with backslash-newlines in it. %} *\
522 \
523 /
524 /* { Close the above comment, if the C compiler mishandled it. */
525
526 char str[] = "\\
527 " A string with backslash-newlines in it %{ %} \\
528 \
529 "";
530
531 char apostrophe = '\'';
532 #endif
533
534 #include <stdio.h>
535 #include <stdlib.h>
536 #include <assert.h>
537 %}
538 /* %{ and %} can be here too. */
539
540 %{
541 /* Exercise pre-prologue dependency to %union. */
542 typedef int value;
543 %}
544
545 /* Exercise M4 quoting: '@:>@@:>@', 0. */
546
547 /* Also exercise %union. */
548 %union
549 {
550 value ival; /* A comment to exercise an old bug. */
551 };
552
553
554 /* Exercise post-prologue dependency to %union. */
555 %{
556 static YYSTYPE value_as_yystype (value val);
557
558 /* Exercise quotes in declarations. */
559 char quote[] = "@:>@@:>@,";
560 %}
561
562 %{
563 ]AT_YYERROR_DECLARE[
564 ]AT_YYLEX_DECLARE[
565 %}
566
567 %type <ival> '@<:@'
568
569 /* Exercise quotes in strings. */
570 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
571
572 %%
573 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1. */
574 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
575 {
576 /* Exercise quotes in braces. */
577 char tmp[] = "@<:@%c@:>@,\n";
578 printf (tmp, $1);
579 }
580 ;
581
582 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
583 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
584 output.or.oline.opt: ;|oline;;|output;;;
585 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
586 %%
587 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2. */
588
589 static YYSTYPE
590 value_as_yystype (value val)
591 {
592 YYSTYPE res;
593 res.ival = val;
594 return res;
595 }
596 ]AT_YYERROR_DEFINE[
597 static int
598 yylex (void)
599 {
600 static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
601 #output "; /* "
602 */
603 static size_t toknum;
604 assert (toknum < sizeof input);
605 yylval = value_as_yystype (input[toknum]);
606 return input[toknum++];
607 }
608 ]])
609
610 # Pacify Emacs'font-lock-mode: "
611
612 AT_DATA([main.c],
613 [[typedef int value;
614 #include "input.h"
615
616 int yyparse (void);
617
618 int
619 main (void)
620 {
621 return yyparse ();
622 }
623 ]])
624 AT_BISON_OPTION_POPDEFS
625
626 AT_BISON_CHECK([-d -v -o input.c input.y])
627 AT_COMPILE([input.o])
628 AT_COMPILE([main.o])
629 AT_COMPILE([input], [input.o main.o])
630 AT_PARSER_CHECK([./input], 0,
631 [[[@<:@],
632 ]])
633
634 AT_CLEANUP
635
636
637 ## ---------------------- ##
638 ## Typed symbol aliases. ##
639 ## ---------------------- ##
640
641 AT_SETUP([Typed symbol aliases])
642
643 # Bison 2.0 broke typed symbol aliases - ensure they work.
644
645 AT_DATA_GRAMMAR([input.y],
646 [[%union
647 {
648 int val;
649 };
650 %token <val> MY_TOKEN "MY TOKEN"
651 %type <val> exp
652 %%
653 exp: "MY TOKEN";
654 %%
655 ]])
656
657 AT_BISON_CHECK([-o input.c input.y])
658
659 AT_CLEANUP
660
661
662 ## --------- ##
663 ## Require. ##
664 ## --------- ##
665
666 m4_define([AT_CHECK_REQUIRE],
667 [AT_SETUP([Require $1])
668 AT_DATA_GRAMMAR([input.y],
669 [[%require "$1";
670 %%
671 empty_file:;
672 ]])
673 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
674 AT_CLEANUP
675 ])
676
677 AT_CHECK_REQUIRE(1.0, 0)
678 AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
679 ## FIXME: Some day augment this version number.
680 AT_CHECK_REQUIRE(100.0, 63)
681
682
683 ## ------------------------------------- ##
684 ## String aliases for character tokens. ##
685 ## ------------------------------------- ##
686
687 AT_SETUP([String aliases for character tokens])
688
689 # Bison once thought a character token and its alias were different
690 # symbols with the same user token number.
691
692 AT_DATA_GRAMMAR([input.y],
693 [[%token 'a' "a"
694 %%
695 start: 'a';
696 %%
697 ]])
698
699 AT_BISON_CHECK([-o input.c input.y])
700
701 AT_CLEANUP
702
703
704 ## -------------- ##
705 ## Symbol names. ##
706 ## -------------- ##
707
708 AT_SETUP([Symbols])
709
710 AT_BISON_OPTION_PUSHDEFS
711 AT_DATA_GRAMMAR([input.y],
712 [[%token WITH-DASH
713 %token WITHOUT_DASH "WITHOUT-DASH"
714 %token WITH.PERIOD
715 %token WITHOUT_PERIOD "WITHOUT.PERIOD"
716 %code {
717 ]AT_YYERROR_DECLARE[
718 ]AT_YYLEX_DECLARE[
719 }
720 %%
721 start: with-dash without_dash with.period without_period;
722 with-dash: WITH-DASH;
723 without_dash: "WITHOUT-DASH";
724 with.period: WITH.PERIOD;
725 without_period: "WITHOUT.PERIOD";
726 %%
727 ]AT_YYERROR_DEFINE[
728 ]AT_YYLEX_DEFINE[
729 ]])
730 AT_BISON_OPTION_POPDEFS
731
732 # POSIX Yacc accept periods, but not dashes.
733 AT_BISON_CHECK([--yacc input.y], [1], [],
734 [[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc]
735 input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc]
736 ]])
737
738 # So warn about them.
739 AT_BISON_CHECK([-Wyacc input.y], [], [],
740 [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc]
741 input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc]
742 ]])
743
744 # Dashes are fine for GNU Bison.
745 AT_BISON_CHECK([-o input.c input.y])
746
747 # Make sure we don't export silly token identifiers with periods or dashes.
748 AT_COMPILE([input.o])
749
750
751 # Periods are genuine letters, they can start identifiers.
752 # Digits and dashes cannot.
753 AT_DATA_GRAMMAR([input.y],
754 [[%token .GOOD
755 -GOOD
756 1NV4L1D
757 -123
758 %%
759 start: .GOOD GOOD
760 ]])
761 AT_BISON_CHECK([-o input.c input.y], [1], [],
762 [[input.y:10.10: invalid character: '-'
763 input.y:11.10-16: invalid identifier: '1NV4L1D'
764 input.y:12.10: invalid character: '-'
765 ]])
766
767 AT_CLEANUP
768
769
770 ## ----------------- ##
771 ## Numbered tokens. ##
772 ## ----------------- ##
773
774 AT_SETUP([Numbered tokens])
775
776 AT_DATA_GRAMMAR([redecl.y],
777 [[%token DECIMAL_1 11259375
778 HEXADECIMAL_1 0xabcdef
779 HEXADECIMAL_2 0xFEDCBA
780 DECIMAL_2 16702650
781 %%
782 start: DECIMAL_1 HEXADECIMAL_2;
783 ]])
784
785 AT_BISON_CHECK([redecl.y], [1], [],
786 [[redecl.y:10.10-22: user token number 11259375 redeclaration for HEXADECIMAL_1
787 redecl.y:9.8-16: previous declaration for DECIMAL_1
788 redecl.y:12.10-18: user token number 16702650 redeclaration for DECIMAL_2
789 redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
790 ]])
791
792 AT_DATA_GRAMMAR([too-large.y],
793 [[%token TOO_LARGE_DEC 999999999999999999999
794 TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
795 %%
796 start: TOO_LARGE_DEC TOO_LARGE_HEX
797 %%
798 ]])
799
800 AT_BISON_CHECK([too-large.y], [1], [],
801 [[too-large.y:9.22-42: integer out of range: '999999999999999999999'
802 too-large.y:10.24-44: integer out of range: '0xFFFFFFFFFFFFFFFFFFF'
803 ]])
804
805 AT_CLEANUP
806
807
808 ## --------------------- ##
809 ## Unclosed constructs. ##
810 ## --------------------- ##
811
812 AT_SETUP([Unclosed constructs])
813
814 # Bison's scan-gram.l once forgot to STRING_FINISH some unclosed
815 # constructs, so they were prepended to whatever it STRING_GROW'ed
816 # next. It also threw them away rather than returning them to the
817 # parser. The effect was confusing subsequent error messages.
818
819 AT_DATA([input.y],
820 [[%token A "a
821 %token B "b"
822 %token AB "ab" // Used to complain that "ab" was already used.
823 %token C '1
824 %token TWO "2"
825 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
826
827 %%
828
829 start: ;
830
831 // Used to report a syntax error because it didn't see any kind of symbol
832 // identifier.
833 %type <f> 'a
834 ;
835 %type <f> "a
836 ;
837 // Used to report a syntax error because it didn't see braced code.
838 %destructor { free ($$)
839 ]])
840
841 AT_BISON_CHECK([-o input.c input.y], 1, [],
842 [[input.y:1.10-2.0: missing '"' at end of line
843 input.y:4.10-5.0: missing "'" at end of line
844 input.y:14.11-15.0: missing "'" at end of line
845 input.y:16.11-17.0: missing '"' at end of line
846 input.y:19.13-20.0: missing '}' at end of file
847 input.y:20.1: syntax error, unexpected end of file
848 ]])
849
850 AT_CLEANUP
851
852
853 ## ------------------------- ##
854 ## %start after first rule. ##
855 ## ------------------------- ##
856
857 AT_SETUP([%start after first rule])
858
859 # Bison once complained that a %start after the first rule was a
860 # redeclaration of the start symbol.
861
862 AT_DATA([input.y],
863 [[%%
864 false_start: ;
865 start: false_start ;
866 %start start;
867 ]])
868
869 AT_BISON_CHECK([-o input.c input.y])
870
871 AT_CLEANUP
872
873
874 ## --------------------- ##
875 ## %prec takes a token. ##
876 ## --------------------- ##
877
878 AT_SETUP([%prec takes a token])
879
880 # Bison once allowed %prec sym where sym was a nonterminal.
881
882 AT_DATA([input.y],
883 [[%%
884 start: PREC %prec PREC ;
885 PREC: ;
886 ]])
887
888 AT_BISON_CHECK([input.y], [1], [],
889 [[input.y:3.1-4: rule given for PREC, which is a token
890 ]])
891
892 AT_CLEANUP
893
894
895 ## ------------------------------- ##
896 ## %prec's token must be defined. ##
897 ## ------------------------------- ##
898
899 AT_SETUP([[%prec's token must be defined]])
900
901 # According to POSIX, a %prec token must be defined separately.
902
903 AT_DATA([[input.y]],
904 [[%%
905 start: %prec PREC ;
906 ]])
907
908 AT_BISON_CHECK([[input.y]], [[0]], [],
909 [[input.y:2.8-17: warning: token for %prec is not defined: PREC [-Wother]
910 ]])
911
912 AT_CLEANUP
913
914
915 ## -------------------------------- ##
916 ## Reject unused %code qualifiers. ##
917 ## -------------------------------- ##
918
919 AT_SETUP([Reject unused %code qualifiers])
920
921 AT_DATA([input-c.y],
922 [[%code q {}
923 %code bad {}
924 %code bad {}
925 %code format {}
926 %%
927 start: ;
928 ]])
929 AT_BISON_CHECK([[input-c.y]], [[1]], [],
930 [[input-c.y:1.7: %code qualifier 'q' is not used
931 input-c.y:2.7-9: %code qualifier 'bad' is not used
932 input-c.y:3.7-9: %code qualifier 'bad' is not used
933 input-c.y:4.7-12: %code qualifier 'format' is not used
934 ]])
935
936 AT_DATA([input-c-glr.y],
937 [[%code q {}
938 %code bad {}
939 %code bad {}
940 %%
941 start: ;
942 ]])
943 AT_BISON_CHECK([[input-c-glr.y]], [[1]], [],
944 [[input-c-glr.y:1.7: %code qualifier 'q' is not used
945 input-c-glr.y:2.7-9: %code qualifier 'bad' is not used
946 input-c-glr.y:3.8-10: %code qualifier 'bad' is not used
947 ]])
948
949 AT_DATA([input-c++.y],
950 [[%code q {}
951 %code bad {}
952 %code q {}
953 %%
954 start: ;
955 ]])
956 AT_BISON_CHECK([[input-c++.y]], [[1]], [],
957 [[input-c++.y:1.7: %code qualifier 'q' is not used
958 input-c++.y:2.7-9: %code qualifier 'bad' is not used
959 input-c++.y:3.8: %code qualifier 'q' is not used
960 ]])
961
962 AT_DATA([input-c++-glr.y],
963 [[%code bad {}
964 %code q {}
965 %code q {}
966 %%
967 start: ;
968 ]])
969 AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [],
970 [[input-c++-glr.y:1.7-9: %code qualifier 'bad' is not used
971 input-c++-glr.y:2.7: %code qualifier 'q' is not used
972 input-c++-glr.y:3.7: %code qualifier 'q' is not used
973 ]])
974
975 AT_DATA([special-char-@@.y],
976 [[%code bad {}
977 %code q {}
978 %code q {}
979 %%
980 start: ;
981 ]])
982 AT_BISON_CHECK([[special-char-@@.y]], [[1]], [],
983 [[special-char-@@.y:1.7-9: %code qualifier 'bad' is not used
984 special-char-@@.y:2.7: %code qualifier 'q' is not used
985 special-char-@@.y:3.7: %code qualifier 'q' is not used
986 ]])
987
988 AT_DATA([special-char-@:>@.y],
989 [[%code bad {}
990 %code q {}
991 %code q {}
992 %%
993 start: ;
994 ]])
995 AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [],
996 [[special-char-@:>@.y:1.7-9: %code qualifier 'bad' is not used
997 special-char-@:>@.y:2.7: %code qualifier 'q' is not used
998 special-char-@:>@.y:3.7: %code qualifier 'q' is not used
999 ]])
1000
1001 AT_CLEANUP
1002
1003
1004 ## ---------------- ##
1005 ## %define errors. ##
1006 ## ---------------- ##
1007
1008 AT_SETUP([%define errors])
1009
1010 AT_DATA([input-redefined.y],
1011 [[%define var "value1"
1012 %define var "value1"
1013 %define var "value2"
1014 %define special1 "@:>@"
1015 %define special2 "@<:@"
1016 %%
1017 start: ;
1018 ]])
1019
1020 AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
1021 [[input-redefined.y:2.9-11: %define variable 'var' redefined
1022 input-redefined.y:1.9-11: previous definition
1023 input-redefined.y:3.10-12: %define variable 'var' redefined
1024 input-redefined.y:2.9-11: previous definition
1025 ]])
1026
1027 AT_DATA([input-unused.y],
1028 [[%define var "value"
1029 %%
1030 start: ;
1031 ]])
1032
1033 AT_BISON_CHECK([[input-unused.y]], [[1]], [],
1034 [[input-unused.y:1.9-11: %define variable 'var' is not used
1035 ]])
1036
1037 AT_CLEANUP
1038
1039
1040 ## ----------------------------------- ##
1041 ## %define, --define, --force-define. ##
1042 ## ----------------------------------- ##
1043
1044 AT_SETUP([[%define, --define, --force-define]])
1045
1046 AT_DATA([[skel.c]],
1047 [[m4@&t@_divert_push(0)@
1048 @output(b4_parser_file_name@)@
1049 [var-dd: ]b4_percent_define_get([[var-dd]])[
1050 var-ff: ]b4_percent_define_get([[var-ff]])[
1051 var-dfg: ]b4_percent_define_get([[var-dfg]])[
1052 var-fd: ]b4_percent_define_get([[var-fd]])
1053 m4@&t@_divert_pop(0)
1054 ]])
1055 AT_DATA([[input.y]],
1056 [[%define var-dfg "gram"
1057 %%
1058 start: ;
1059 ]])
1060 AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
1061 -Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
1062 -Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \
1063 -Fvar-fd=cmd-f -Dvar-fd=cmd-d \
1064 --skeleton ./skel.c input.y]])
1065 AT_CHECK([[cat input.tab.c]], [[0]],
1066 [[var-dd: cmd-d2
1067 var-ff: cmd-f2
1068 var-dfg: cmd-f
1069 var-fd: cmd-d
1070 ]])
1071
1072 AT_DATA([[input-dg.y]],
1073 [[%define var "gram"
1074 %%
1075 start: ;
1076 ]])
1077 AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
1078 [[input-dg.y:1.9-11: %define variable 'var' redefined
1079 <command line>:2: previous definition
1080 ]])
1081
1082 AT_DATA([[input-unused.y]],
1083 [[%%
1084 start: ;
1085 ]])
1086 AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [],
1087 [[<command line>:2: %define variable 'unused-d' is not used
1088 <command line>:3: %define variable 'unused-f' is not used
1089 ]])
1090
1091 AT_CLEANUP
1092
1093 ## --------------------------- ##
1094 ## %define Boolean variables. ##
1095 ## --------------------------- ##
1096
1097 AT_SETUP([[%define Boolean variables]])
1098
1099 AT_DATA([Input.y],
1100 [[%language "Java"
1101 %define public "maybe"
1102 %define parser_class_name "Input"
1103 %%
1104 start: ;
1105 ]])
1106
1107 AT_BISON_CHECK([[Input.y]], [1], [],
1108 [[Input.y:2.9-14: invalid value for %define Boolean variable 'public'
1109 ]])
1110
1111 AT_CLEANUP
1112
1113 ## ------------------------ ##
1114 ## %define enum variables. ##
1115 ## ------------------------ ##
1116
1117 AT_SETUP([[%define enum variables]])
1118
1119 # Front-end.
1120 AT_DATA([[input.y]],
1121 [[%define lr.default-reductions bogus
1122 %%
1123 start: ;
1124 ]])
1125 AT_BISON_CHECK([[input.y]], [[1]], [[]],
1126 [[input.y:1.9-29: invalid value for %define variable 'lr.default-reductions': 'bogus'
1127 input.y:1.9-29: accepted value: 'most'
1128 input.y:1.9-29: accepted value: 'consistent'
1129 input.y:1.9-29: accepted value: 'accepting'
1130 ]])
1131
1132 # Back-end.
1133 AT_DATA([[input.y]],
1134 [[%define api.push-pull neither
1135 %%
1136 start: ;
1137 ]])
1138 AT_BISON_CHECK([[input.y]], [1], [],
1139 [[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
1140 input.y:1.9-21: accepted value: 'pull'
1141 input.y:1.9-21: accepted value: 'push'
1142 input.y:1.9-21: accepted value: 'both'
1143 ]])
1144
1145 AT_CLEANUP
1146
1147 ## -------------------------------- ##
1148 ## %define backward compatibility. ##
1149 ## -------------------------------- ##
1150
1151 AT_SETUP([[%define backward compatibility]])
1152
1153 # The error messages tell us whether underscores in these variables are
1154 # being converted to dashes.
1155
1156 AT_DATA([[input.y]],
1157 [[%define api.push_pull "neither"
1158 %%
1159 start: ;
1160 ]])
1161 AT_BISON_CHECK([[input.y]], [1], [],
1162 [[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
1163 input.y:1.9-21: accepted value: 'pull'
1164 input.y:1.9-21: accepted value: 'push'
1165 input.y:1.9-21: accepted value: 'both'
1166 ]])
1167
1168 AT_DATA([[input.y]],
1169 [[%define lr.keep_unreachable_states maybe
1170 %%
1171 start: ;
1172 ]])
1173 AT_BISON_CHECK([[input.y]], [1], [],
1174 [[input.y:1.9-34: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
1175 ]])
1176
1177 AT_DATA([[input.y]],
1178 [[%define namespace "foo"
1179 %define api.namespace "foo"
1180 %%
1181 start: ;
1182 ]])
1183 AT_BISON_CHECK([[input.y]], [1], [],
1184 [[input.y:2.9-21: %define variable 'api.namespace' redefined
1185 input.y:1.9-17: previous definition
1186 ]])
1187
1188 AT_DATA([[input.y]],
1189 [[%define foo_bar "baz"
1190 %%
1191 start: ;
1192 ]])
1193 AT_BISON_CHECK([[input.y]], [[1]], [],
1194 [[input.y:1.9-15: %define variable 'foo_bar' is not used
1195 ]])
1196
1197 AT_CLEANUP
1198
1199 ## ------------------------- ##
1200 ## Unused %define api.pure. ##
1201 ## ------------------------- ##
1202
1203 AT_SETUP([[Unused %define api.pure]])
1204
1205 # AT_CHECK_API_PURE(DECLS, VALUE)
1206 # -------------------------------
1207 # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
1208 # are specified.
1209 m4_define([AT_CHECK_API_PURE],
1210 [
1211 AT_DATA([[input.y]],
1212 [[%define api.pure ]$2[
1213 ]$1[
1214 %%
1215 start: ;
1216 ]])
1217
1218 AT_BISON_CHECK([[input.y]], [[1]], [],
1219 [[input.y:1.9-16: %define variable 'api.pure' is not used
1220 ]])
1221 ])
1222
1223 AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
1224 AT_CHECK_API_PURE([[%language "c++" %defines]], [[false]])
1225 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
1226 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[false]])
1227 AT_CHECK_API_PURE([[%language "java"]], [[true]])
1228 AT_CHECK_API_PURE([[%language "java"]], [[false]])
1229
1230 AT_CLEANUP
1231
1232 ## -------------------------------- ##
1233 ## C++ namespace reference errors. ##
1234 ## -------------------------------- ##
1235
1236 AT_SETUP([[C++ namespace reference errors]])
1237
1238 # AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
1239 # -------------------------------------------------------------
1240 # Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
1241 m4_define([AT_CHECK_NAMESPACE_ERROR],
1242 [
1243 AT_DATA([[input.y]],
1244 [[%language "C++"
1245 %defines
1246 %define api.namespace "]$1["
1247 %%
1248 start: ;
1249 ]])
1250
1251 AT_BISON_CHECK([[input.y]], [1], [],
1252 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
1253 [[input.y:3.9-21: ]b4_arg[
1254 ]])])
1255 ])
1256
1257 AT_CHECK_NAMESPACE_ERROR([[]],
1258 [[namespace reference is empty]])
1259 AT_CHECK_NAMESPACE_ERROR([[ ]],
1260 [[namespace reference is empty]])
1261 AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
1262 [[namespace reference has consecutive "::"]])
1263 AT_CHECK_NAMESPACE_ERROR([[foo:: ::bar]],
1264 [[namespace reference has consecutive "::"]])
1265 AT_CHECK_NAMESPACE_ERROR([[::::bar]],
1266 [[namespace reference has consecutive "::"]])
1267 AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
1268 [[namespace reference has consecutive "::"]])
1269 AT_CHECK_NAMESPACE_ERROR([[foo::bar:: ::]],
1270 [[namespace reference has consecutive "::"]],
1271 [[namespace reference has a trailing "::"]])
1272 AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
1273 [[namespace reference has a trailing "::"]])
1274 AT_CHECK_NAMESPACE_ERROR([[foo::bar:: ]],
1275 [[namespace reference has a trailing "::"]])
1276 AT_CHECK_NAMESPACE_ERROR([[::]],
1277 [[namespace reference has a trailing "::"]])
1278
1279 AT_CLEANUP
1280
1281 ## ------------------------ ##
1282 ## Bad character literals. ##
1283 ## ------------------------ ##
1284
1285 # Bison used to accept character literals that were empty or contained
1286 # too many characters.
1287
1288 # FIXME: AT_DATA or some variant of AT_DATA may eventually permit
1289 # the final newline to be omitted. See the threads starting at
1290 # <http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00019.html>.
1291
1292 AT_SETUP([[Bad character literals]])
1293
1294 AT_DATA([empty.y],
1295 [[%%
1296 start: '';
1297 start: '
1298 ]])
1299 AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
1300
1301 AT_BISON_CHECK([empty.y], [1], [],
1302 [[empty.y:2.8-9: warning: empty character literal [-Wother]
1303 empty.y:3.8-4.0: warning: empty character literal [-Wother]
1304 empty.y:3.8-4.0: missing "'" at end of line
1305 empty.y:4.8: warning: empty character literal [-Wother]
1306 empty.y:4.8: missing "'" at end of file
1307 ]])
1308
1309 AT_DATA([two.y],
1310 [[%%
1311 start: 'ab';
1312 start: 'ab
1313 ]])
1314 AT_CHECK([[perl -e "print 'start: \'ab';" >> two.y || exit 77]])
1315
1316 AT_BISON_CHECK([two.y], [1], [],
1317 [[two.y:2.8-11: warning: extra characters in character literal [-Wother]
1318 two.y:3.8-4.0: warning: extra characters in character literal [-Wother]
1319 two.y:3.8-4.0: missing "'" at end of line
1320 two.y:4.8-10: warning: extra characters in character literal [-Wother]
1321 two.y:4.8-10: missing "'" at end of file
1322 ]])
1323
1324 AT_DATA([three.y],
1325 [[%%
1326 start: 'abc';
1327 start: 'abc
1328 ]])
1329 AT_CHECK([[perl -e "print 'start: \'abc';" >> three.y || exit 77]])
1330
1331 AT_BISON_CHECK([three.y], [1], [],
1332 [[three.y:2.8-12: warning: extra characters in character literal [-Wother]
1333 three.y:3.8-4.0: warning: extra characters in character literal [-Wother]
1334 three.y:3.8-4.0: missing "'" at end of line
1335 three.y:4.8-11: warning: extra characters in character literal [-Wother]
1336 three.y:4.8-11: missing "'" at end of file
1337 ]])
1338
1339 AT_CLEANUP
1340
1341 ## ------------------------- ##
1342 ## Bad escapes in literals. ##
1343 ## ------------------------- ##
1344
1345 AT_SETUP([[Bad escapes in literals]])
1346
1347 AT_DATA([input.y],
1348 [[%%
1349 start: '\777' '\0' '\xfff' '\x0'
1350 '\uffff' '\u0000' '\Uffffffff' '\U00000000'
1351 '\ ' '\A';
1352 ]])
1353
1354 # It is not easy to create special characters, we cannot even trust tr.
1355 # Beside we cannot even expect "echo '\0'" to output two characters
1356 # (well three with \n): at least Bash 3.2 converts the two-character
1357 # sequence "\0" into a single NUL character.
1358 AT_CHECK([[perl -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
1359 || exit 77]])
1360
1361 AT_BISON_CHECK([input.y], [1], [],
1362 [[input.y:2.9-12: invalid number after \-escape: 777
1363 input.y:2.8-13: warning: empty character literal [-Wother]
1364 input.y:2.16-17: invalid number after \-escape: 0
1365 input.y:2.15-18: warning: empty character literal [-Wother]
1366 input.y:2.21-25: invalid number after \-escape: xfff
1367 input.y:2.20-26: warning: empty character literal [-Wother]
1368 input.y:2.29-31: invalid number after \-escape: x0
1369 input.y:2.28-32: warning: empty character literal [-Wother]
1370 input.y:3.9-14: invalid number after \-escape: uffff
1371 input.y:3.8-15: warning: empty character literal [-Wother]
1372 input.y:3.18-23: invalid number after \-escape: u0000
1373 input.y:3.17-24: warning: empty character literal [-Wother]
1374 input.y:3.27-36: invalid number after \-escape: Uffffffff
1375 input.y:3.26-37: warning: empty character literal [-Wother]
1376 input.y:3.40-49: invalid number after \-escape: U00000000
1377 input.y:3.39-50: warning: empty character literal [-Wother]
1378 input.y:4.9-10: invalid character after \-escape: ' '
1379 input.y:4.8-11: warning: empty character literal [-Wother]
1380 input.y:4.14-15: invalid character after \-escape: A
1381 input.y:4.13-16: warning: empty character literal [-Wother]
1382 input.y:5.9-16: invalid character after \-escape: \t
1383 input.y:5.17: invalid character after \-escape: \f
1384 input.y:5.18: invalid character after \-escape: \0
1385 input.y:5.19: invalid character after \-escape: \001
1386 ]])
1387
1388 AT_CLEANUP
1389
1390 ## ------------------------- ##
1391 ## LAC: Errors for %define. ##
1392 ## ------------------------- ##
1393
1394 AT_SETUP([[LAC: Errors for %define]])
1395
1396 AT_DATA([[input.y]],
1397 [[%%
1398 start: ;
1399 ]])
1400
1401 # parse.lac.* options are useless if LAC isn't actually activated.
1402 AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
1403 [[1]], [],
1404 [[<command line>:2: %define variable 'parse.lac.es-capacity-initial' is not used
1405 ]])
1406 AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
1407 [[1]], [],
1408 [[<command line>:2: %define variable 'parse.lac.memory-trace' is not used
1409 ]])
1410
1411 AT_CLEANUP
1412
1413 ## --------------------------------------------- ##
1414 ## -Werror is not affected by -Wnone and -Wall. ##
1415 ## --------------------------------------------- ##
1416
1417 AT_SETUP([[-Werror is not affected by -Wnone and -Wall]])
1418
1419 AT_DATA([[input.y]],
1420 [[%%
1421 foo-bar: ;
1422 ]])
1423
1424 # -Werror is not enabled by -Wall or equivalent.
1425 AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]],
1426 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
1427 ]])
1428 AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
1429 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
1430 ]])
1431 AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
1432 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
1433 ]])
1434
1435 # -Werror is not disabled by -Wnone or equivalent.
1436 AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]])
1437 AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]],
1438 [[bison: warnings being treated as errors
1439 input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
1440 ]])
1441 [mv stderr experr]
1442 AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
1443
1444 AT_CLEANUP
1445
1446
1447 ## ------------------------------------------------------ ##
1448 ## %name-prefix and %define api.prefix are incompatible. ##
1449 ## ------------------------------------------------------ ##
1450
1451 AT_SETUP([[%name-prefix and %define api.prefix are incompatible]])
1452
1453 # AT_TEST(DIRECTIVES, OPTIONS, ERROR-LOCATION)
1454 # --------------------------------------------
1455 m4_pushdef([AT_TEST],
1456 [AT_DATA([[input.y]],
1457 [[$1
1458 %%
1459 exp:;
1460 ]])
1461 AT_BISON_CHECK([[$2 input.y]], [[1]], [[]],
1462 [[$3: '%name-prefix' and '%define api.prefix' cannot be used together
1463 ]])
1464 ])
1465
1466 AT_TEST([%define api.prefix foo %name-prefix "bar"], [], [input.y:1.9-18])
1467 AT_TEST([], [-Dapi.prefix=foo -p bar], [<command line>:2])
1468 AT_TEST([%name-prefix "bar"], [-Dapi.prefix=foo], [<command line>:2])
1469 AT_TEST([%define api.prefix foo], [-p bar], [input.y:1.9-18])
1470
1471 m4_popdef([AT_TEST])
1472
1473 AT_CLEANUP