1 # Checking the Bison scanner. -*- Autotest -*-
3 # Copyright (C) 2002-2012 Free Software Foundation, Inc.
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.
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.
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/>.
18 AT_BANNER([[Input Processing.]])
20 # Mostly test that we are robust to mistakes.
27 AT_SETUP([Invalid $n and @n])
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'
47 AT_SETUP([Type Clashes])
54 exp: foo { $$; } foo { $2; } foo
60 AT_BISON_CHECK([input.y], [1], [],
61 [[input.y:5.12-13: $$ 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]
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;]]])
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],
92 ], [_AT_UNUSED_VALUES_DECLARATIONS
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[; }
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])
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]
152 ## --------------- ##
154 ## --------------- ##
156 AT_SETUP([Unused values])
157 AT_CHECK_UNUSED_VALUES
158 AT_CHECK_UNUSED_VALUES(, [1])
162 ## ------------------------------------------ ##
163 ## Unused values before symbol declarations. ##
164 ## ------------------------------------------ ##
166 AT_SETUP([Unused values before symbol declarations])
167 AT_CHECK_UNUSED_VALUES([1])
168 AT_CHECK_UNUSED_VALUES([1], [1])
172 ## --------------------------------------------- ##
173 ## Default %printer and %destructor redeclared. ##
174 ## --------------------------------------------- ##
176 AT_SETUP([Default %printer and %destructor redeclared])
179 [[%destructor { destroy ($$); } <*> <*>
180 %printer { print ($$); } <*> <*>
182 %destructor { destroy ($$); } <*>
183 %printer { print ($$); } <*>
185 %destructor { destroy ($$); } <> <>
186 %printer { print ($$); } <> <>
188 %destructor { destroy ($$); } <>
189 %printer { print ($$); } <>
195 %destructor { destroy ($$); } <*>;
196 %printer { print ($$); } <*>;
198 %destructor { destroy ($$); } <>;
199 %printer { print ($$); } <>;
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
232 ## ---------------------------------------------- ##
233 ## Per-type %printer and %destructor redeclared. ##
234 ## ---------------------------------------------- ##
236 AT_SETUP([Per-type %printer and %destructor redeclared])
239 [[%destructor { destroy ($$); } <field1> <field2>
240 %printer { print ($$); } <field1> <field2>
242 %destructor { destroy ($$); } <field1> <field1>
243 %printer { print ($$); } <field2> <field2>
249 %destructor { destroy ($$); } <field2> <field1>;
250 %printer { print ($$); } <field2> <field1>;
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
274 ## ----------------------------------------------------- ##
275 ## Undeclared symbols used for a printer or destructor. ##
276 ## ----------------------------------------------------- ##
278 AT_SETUP([Undeclared symbols used for a printer or destructor])
281 [[%printer {} foo baz
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]
297 ## ----------------------------------------------------- ##
298 ## Unassociated types used for a printer or destructor. ##
299 ## ----------------------------------------------------- ##
301 AT_SETUP([Unassociated types used for a printer or destructor])
304 [[%token <type1> tag1
307 %printer { } <type1> <type3>
308 %destructor { } <type2> <type4>
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]
326 ## --------------------------------- ##
327 ## Useless printers or destructors. ##
328 ## --------------------------------- ##
330 AT_SETUP([Useless printers or destructors])
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
342 %destructor {} token2
344 %destructor {} token61
349 %destructor {} <type2>
351 %destructor {} <type4>
354 %destructor {} <type6>
356 %destructor {} <type7>
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]
371 ## ---------------------------------------- ##
372 ## Unused values with default %destructor. ##
373 ## ---------------------------------------- ##
375 AT_SETUP([Unused values with default %destructor])
378 [[%destructor { destroy ($$); } <>
383 start: end end tagged tagged { $<tag>1; $3; } ;
388 AT_BISON_CHECK([input.y], [0], [],
389 [[input.y:6.8-45: warning: unset value: $$ [-Wother]
390 input.y:6.8-45: warning: unused value: $2 [-Wother]
391 input.y:7.6-8: warning: unset value: $$ [-Wother]
395 [[%destructor { destroy ($$); } <*>
400 start: end end tagged tagged { $<tag>1; $3; } ;
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: $$ [-Wother]
413 ## ----------------------------------------- ##
414 ## Unused values with per-type %destructor. ##
415 ## ----------------------------------------- ##
417 AT_SETUP([Unused values with per-type %destructor])
420 [[%destructor { destroy ($$); } <field1>
421 %type <field1> start end
425 start: end end { $1; } ;
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]
438 ## ---------------------- ##
439 ## Incompatible Aliases. ##
440 ## ---------------------- ##
442 AT_SETUP([Incompatible Aliases])
449 %destructor {bar} foo
454 %destructor {baz} "foo"
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
476 ## ----------------------- ##
477 ## Torturing the Scanner. ##
478 ## ----------------------- ##
480 # Be sure to compile and run, so that the C compiler checks what
483 AT_SETUP([Torturing the Scanner])
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
495 AT_BISON_CHECK([input.y], [1], [],
496 [[input.y:1.1-2: syntax error, unexpected {...}
500 AT_DATA_GRAMMAR([input.y],
502 /* This is seen in GCC: a %{ and %} in middle of a comment. */
503 const char *foo = "So %{ and %} can be here too.";
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
512 HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
515 The Apple Darwin compiler (as of late 2002) mishandles
516 \\[newline]' within a character constant.
521 * A comment with backslash-newlines in it. %} *\
524 /* { Close the above comment, if the C compiler mishandled it. */
527 " A string with backslash-newlines in it %{ %} \\
531 char apostrophe = '\'';
538 /* %{ and %} can be here too. */
541 /* Exercise pre-prologue dependency to %union. */
545 /* Exercise M4 quoting: '@:>@@:>@', 0. */
547 /* Also exercise %union. */
550 value ival; /* A comment to exercise an old bug. */
554 /* Exercise post-prologue dependency to %union. */
556 static YYSTYPE value_as_yystype (value val);
558 /* Exercise quotes in declarations. */
559 char quote[] = "@:>@@:>@,";
569 /* Exercise quotes in strings. */
570 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
573 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1. */
574 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
576 /* Exercise quotes in braces. */
577 char tmp[] = "@<:@%c@:>@,\n";
582 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
583 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
584 output.or.oline.opt: ;|oline;;|output;;;
585 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
587 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2. */
590 value_as_yystype (value val)
600 static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
603 static size_t toknum;
604 assert (toknum < sizeof input);
605 yylval = value_as_yystype (input[toknum]);
606 return input[toknum++];
610 # Pacify Emacs'font-lock-mode: "
624 AT_BISON_OPTION_POPDEFS
626 AT_BISON_CHECK([-d -v -o input.c input.y])
627 AT_COMPILE([input.o])
629 AT_COMPILE([input], [input.o main.o])
630 AT_PARSER_CHECK([./input], 0,
637 ## ---------------------- ##
638 ## Typed symbol aliases. ##
639 ## ---------------------- ##
641 AT_SETUP([Typed symbol aliases])
643 # Bison 2.0 broke typed symbol aliases - ensure they work.
645 AT_DATA_GRAMMAR([input.y],
650 %token <val> MY_TOKEN "MY TOKEN"
657 AT_BISON_CHECK([-o input.c input.y])
666 m4_define([AT_CHECK_REQUIRE],
667 [AT_SETUP([Require $1])
668 AT_DATA_GRAMMAR([input.y],
673 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
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)
683 ## ------------------------------------- ##
684 ## String aliases for character tokens. ##
685 ## ------------------------------------- ##
687 AT_SETUP([String aliases for character tokens])
689 # Bison once thought a character token and its alias were different
690 # symbols with the same user token number.
692 AT_DATA_GRAMMAR([input.y],
699 AT_BISON_CHECK([-o input.c input.y])
710 AT_BISON_OPTION_PUSHDEFS
711 AT_DATA_GRAMMAR([input.y],
713 %token WITHOUT_DASH "WITHOUT-DASH"
715 %token WITHOUT_PERIOD "WITHOUT.PERIOD"
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";
730 AT_BISON_OPTION_POPDEFS
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]
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]
744 # Dashes are fine for GNU Bison.
745 AT_BISON_CHECK([-o input.c input.y])
747 # Make sure we don't export silly token identifiers with periods or dashes.
748 AT_COMPILE([input.o])
751 # Periods are genuine letters, they can start identifiers.
752 # Digits and dashes cannot.
753 AT_DATA_GRAMMAR([input.y],
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: '-'
770 ## ----------------- ##
771 ## Numbered tokens. ##
772 ## ----------------- ##
774 AT_SETUP([Numbered tokens])
776 AT_DATA_GRAMMAR([redecl.y],
777 [[%token DECIMAL_1 11259375
778 HEXADECIMAL_1 0xabcdef
779 HEXADECIMAL_2 0xFEDCBA
782 start: DECIMAL_1 HEXADECIMAL_2;
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
792 AT_DATA_GRAMMAR([too-large.y],
793 [[%token TOO_LARGE_DEC 999999999999999999999
794 TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
796 start: TOO_LARGE_DEC TOO_LARGE_HEX
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'
808 ## --------------------- ##
809 ## Unclosed constructs. ##
810 ## --------------------- ##
812 AT_SETUP([Unclosed constructs])
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.
822 %token AB "ab" // Used to complain that "ab" was already used.
825 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
831 // Used to report a syntax error because it didn't see any kind of symbol
837 // Used to report a syntax error because it didn't see braced code.
838 %destructor { free ($$)
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
853 ## ------------------------- ##
854 ## %start after first rule. ##
855 ## ------------------------- ##
857 AT_SETUP([%start after first rule])
859 # Bison once complained that a %start after the first rule was a
860 # redeclaration of the start symbol.
869 AT_BISON_CHECK([-o input.c input.y])
874 ## --------------------- ##
875 ## %prec takes a token. ##
876 ## --------------------- ##
878 AT_SETUP([%prec takes a token])
880 # Bison once allowed %prec sym where sym was a nonterminal.
884 start: PREC %prec PREC ;
888 AT_BISON_CHECK([input.y], [1], [],
889 [[input.y:3.1-4: rule given for PREC, which is a token
895 ## ------------------------------- ##
896 ## %prec's token must be defined. ##
897 ## ------------------------------- ##
899 AT_SETUP([[%prec's token must be defined]])
901 # According to POSIX, a %prec token must be defined separately.
908 AT_BISON_CHECK([[input.y]], [[0]], [],
909 [[input.y:2.8-17: warning: token for %prec is not defined: PREC [-Wother]
915 ## -------------------------------- ##
916 ## Reject unused %code qualifiers. ##
917 ## -------------------------------- ##
919 AT_SETUP([Reject unused %code qualifiers])
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
936 AT_DATA([input-c-glr.y],
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
949 AT_DATA([input-c++.y],
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
962 AT_DATA([input-c++-glr.y],
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
975 AT_DATA([special-char-@@.y],
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
988 AT_DATA([special-char-@:>@.y],
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
1004 ## ---------------- ##
1005 ## %define errors. ##
1006 ## ---------------- ##
1008 AT_SETUP([%define errors])
1010 AT_DATA([input-redefined.y],
1011 [[%define var "value1"
1012 %define var "value1"
1013 %define var "value2"
1014 %define special1 "@:>@"
1015 %define special2 "@<:@"
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
1027 AT_DATA([input-unused.y],
1028 [[%define var "value"
1033 AT_BISON_CHECK([[input-unused.y]], [[1]], [],
1034 [[input-unused.y:1.9-11: %define variable 'var' is not used
1040 ## ----------------------------------- ##
1041 ## %define, --define, --force-define. ##
1042 ## ----------------------------------- ##
1044 AT_SETUP([[%define, --define, --force-define]])
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)
1055 AT_DATA([[input.y]],
1056 [[%define var-dfg "gram"
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]],
1072 AT_DATA([[input-dg.y]],
1073 [[%define var "gram"
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
1082 AT_DATA([[input-unused.y]],
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
1093 ## --------------------------- ##
1094 ## %define Boolean variables. ##
1095 ## --------------------------- ##
1097 AT_SETUP([[%define Boolean variables]])
1101 %define public "maybe"
1102 %define parser_class_name "Input"
1107 AT_BISON_CHECK([[Input.y]], [1], [],
1108 [[Input.y:2.9-14: invalid value for %define Boolean variable 'public'
1113 ## ------------------------ ##
1114 ## %define enum variables. ##
1115 ## ------------------------ ##
1117 AT_SETUP([[%define enum variables]])
1120 AT_DATA([[input.y]],
1121 [[%define lr.default-reductions bogus
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'
1133 AT_DATA([[input.y]],
1134 [[%define api.push-pull neither
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'
1147 ## -------------------------------- ##
1148 ## %define backward compatibility. ##
1149 ## -------------------------------- ##
1151 AT_SETUP([[%define backward compatibility]])
1153 # The error messages tell us whether underscores in these variables are
1154 # being converted to dashes.
1156 AT_DATA([[input.y]],
1157 [[%define api.push_pull "neither"
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'
1168 AT_DATA([[input.y]],
1169 [[%define lr.keep_unreachable_states maybe
1173 AT_BISON_CHECK([[input.y]], [1], [],
1174 [[input.y:1.9-34: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
1177 AT_DATA([[input.y]],
1178 [[%define namespace "foo"
1179 %define api.namespace "foo"
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
1188 AT_DATA([[input.y]],
1189 [[%define foo_bar "baz"
1193 AT_BISON_CHECK([[input.y]], [[1]], [],
1194 [[input.y:1.9-15: %define variable 'foo_bar' is not used
1199 ## ------------------------- ##
1200 ## Unused %define api.pure. ##
1201 ## ------------------------- ##
1203 AT_SETUP([[Unused %define api.pure]])
1205 # AT_CHECK_API_PURE(DECLS, VALUE)
1206 # -------------------------------
1207 # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
1209 m4_define([AT_CHECK_API_PURE],
1211 AT_DATA([[input.y]],
1212 [[%define api.pure ]$2[
1218 AT_BISON_CHECK([[input.y]], [[1]], [],
1219 [[input.y:1.9-16: %define variable 'api.pure' is not used
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]])
1232 ## -------------------------------- ##
1233 ## C++ namespace reference errors. ##
1234 ## -------------------------------- ##
1236 AT_SETUP([[C++ namespace reference errors]])
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],
1243 AT_DATA([[input.y]],
1246 %define api.namespace "]$1["
1251 AT_BISON_CHECK([[input.y]], [1], [],
1252 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
1253 [[input.y:3.9-21: ]b4_arg[
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 "::"]])
1281 ## ------------------------ ##
1282 ## Bad character literals. ##
1283 ## ------------------------ ##
1285 # Bison used to accept character literals that were empty or contained
1286 # too many characters.
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>.
1292 AT_SETUP([[Bad character literals]])
1299 AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
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
1314 AT_CHECK([[perl -e "print 'start: \'ab';" >> two.y || exit 77]])
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
1329 AT_CHECK([[perl -e "print 'start: \'abc';" >> three.y || exit 77]])
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
1341 ## ------------------------- ##
1342 ## Bad escapes in literals. ##
1343 ## ------------------------- ##
1345 AT_SETUP([[Bad escapes in literals]])
1349 start: '\777' '\0' '\xfff' '\x0'
1350 '\uffff' '\u0000' '\Uffffffff' '\U00000000'
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 \
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
1390 ## ------------------------- ##
1391 ## LAC: Errors for %define. ##
1392 ## ------------------------- ##
1394 AT_SETUP([[LAC: Errors for %define]])
1396 AT_DATA([[input.y]],
1401 # parse.lac.* options are useless if LAC isn't actually activated.
1402 AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
1404 [[<command line>:2: %define variable 'parse.lac.es-capacity-initial' is not used
1406 AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
1408 [[<command line>:2: %define variable 'parse.lac.memory-trace' is not used
1413 ## --------------------------------------------- ##
1414 ## -Werror is not affected by -Wnone and -Wall. ##
1415 ## --------------------------------------------- ##
1417 AT_SETUP([[-Werror is not affected by -Wnone and -Wall]])
1419 AT_DATA([[input.y]],
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]
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]
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]
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]
1442 AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
1447 ## ------------------------------------------------------ ##
1448 ## %name-prefix and %define api.prefix are incompatible. ##
1449 ## ------------------------------------------------------ ##
1451 AT_SETUP([[%name-prefix and %define api.prefix are incompatible]])
1453 # AT_TEST(DIRECTIVES, OPTIONS, ERROR-LOCATION)
1454 # --------------------------------------------
1455 m4_pushdef([AT_TEST],
1456 [AT_DATA([[input.y]],
1461 AT_BISON_CHECK([[$2 input.y]], [[1]], [[]],
1462 [[$3: '%name-prefix' and '%define api.prefix' cannot be used together
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])
1471 m4_popdef([AT_TEST])