# Checking the Bison reader. -*- Autotest -*- # Copyright (C) 2002-2015, 2018-2022 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . AT_BANNER([[Input Processing.]]) # Mostly test that we are robust to mistakes. ## ----------------------------- ## ## Invalid number of arguments. ## ## ----------------------------- ## AT_SETUP([Invalid number of arguments]) AT_BISON_CHECK([], [1], [], [[bison: missing operand Try 'bison --help' for more information. ]]) AT_BISON_CHECK([1.y 2.y], [1], [], [[bison: extra operand '2.y' Try 'bison --help' for more information. ]]) # For some reason, on some systems we use the system's getopt, not the # one we ship in gnulib. So we can get two different error messages. # See https://lists.gnu.org/r/bison-patches/2018-10/msg00154.html AT_BISON_CHECK([--skeleton], [1], [], [stderr]) AT_CHECK([[sed -e \ "s/requires an argument -- skeleton/'--skeleton' requires an argument/" \ stderr]], 0, [[bison: option '--skeleton' requires an argument Try 'bison --help' for more information. ]]) AT_CLEANUP ## ----------------- ## ## Invalid options. ## ## ----------------- ## AT_SETUP([Invalid options]) AT_DATA([input.y], [[%% exp: '0' ]]) # We used to accept these, as -f, --report and others were sharing # their code with -W. AT_BISON_CHECK([-ferror=caret input.y], [1], [], [ignore]) AT_BISON_CHECK([--report=error=itemsets input.y], [1], [], [ignore]) # We used to accept any character after "-Werror", instead of ensuring # this is "=". AT_BISON_CHECK([-Werror?all input.y], [1], [], [ignore]) AT_CLEANUP ## ---------------- ## ## Invalid inputs. ## ## ---------------- ## # The truly bad guys no human would write, but easily uncovered by # fuzzers. AT_SETUP([Invalid inputs]) AT_DATA([input.y], [[%header "\360\000\200\210" \000\001\002\377? "\000" %% ? default: 'a' } %& %a-does-not-exist %- %{ ]]) AT_PERL_REQUIRE([[-pi -e 's/\\(\d{3})/chr(oct($1))/ge' input.y]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [stderr]) # Autotest's diffing, when there are NUL bytes, just reports "binary # files differ". So don't leave NUL bytes. And don't leave invalid # mbchars either: escape raw binary. AT_PERL_CHECK([[-p -e 's{([\0\200\210\360\377])}{sprintf "\\x%02x", ord($1)}ge' stderr]], [], [[input.y:1.11: error: invalid null character 1 | %header "\xf0\x00\x80\x88" | ^ input.y:2.1-2: error: invalid characters: '\0\001\002\377?' 2 | \x00\xff? | ^~ input.y:3.2: error: invalid null character 3 | "\x00" | ^ input.y:5.1: error: invalid character: '?' 5 | ? | ^ input.y:6.14: error: invalid character: '}' 6 | default: 'a' } | ^ input.y:7.1: error: invalid character: '%' 7 | %& | ^ input.y:7.2: error: invalid character: '&' 7 | %& | ^ input.y:8.1-17: error: invalid directive: '%a-does-not-exist' 8 | %a-does-not-exist | ^~~~~~~~~~~~~~~~~ input.y:9.1: error: invalid character: '%' 9 | %- | ^ input.y:9.2: error: invalid character: '-' 9 | %- | ^ input.y:10.1-11.0: error: missing '%}' at end of file 10 | %{ | ^~ ]]) AT_CLEANUP ## ------------------------ ## ## Invalid inputs with {}. ## ## ------------------------ ## AT_SETUP([Invalid inputs with {}]) # We used to SEGV here. See # https://lists.gnu.org/r/bug-bison/2005-07/msg00053.html AT_DATA([input.y], [[ %destructor %initial-action %lex-param %parse-param %printer %union ]]) AT_BISON_CHECK([input.y], [1], [], [[input.y:3.1-15: error: expected {...} before %initial-action ]]) AT_CLEANUP ## -------------------------- ## ## Yacc warnings on symbols. ## ## -------------------------- ## AT_SETUP([Yacc warnings on symbols]) AT_DATA([input.y], [[%nterm exp %token NUM 0x40 "number" %% exp: "number"; ]]) AT_BISON_CHECK([-fcaret -Wyacc input.y], [0], [], [[input.y:1.1-6: warning: POSIX Yacc does not support %nterm [-Wyacc] 1 | %nterm exp | ^~~~~~ input.y:2.12-15: warning: POSIX Yacc does not support hexadecimal literals [-Wyacc] 2 | %token NUM 0x40 "number" | ^~~~ input.y:2.17-24: warning: POSIX Yacc does not support string literals [-Wyacc] 2 | %token NUM 0x40 "number" | ^~~~~~~~ input.y:4.6-13: warning: POSIX Yacc does not support string literals [-Wyacc] 4 | exp: "number"; | ^~~~~~~~ ]]) AT_CLEANUP ## --------------- ## ## Yacc warnings. ## ## --------------- ## AT_SETUP([Yacc warnings]) AT_DATA([input.y], [[%destructor {} %printer {} %type exp a b %% exp: a b { $$ = $1 + $2; }; a: { $$ = 42; } { $$ = $1; }; b: %empty { $$ = 42; }; ]]) AT_BISON_CHECK([-fcaret -Wyacc input.y], [0], [], [[input.y:1.1-11: warning: POSIX Yacc does not support %destructor [-Wyacc] 1 | %destructor {} | ^~~~~~~~~~~ input.y:2.1-8: warning: POSIX Yacc does not support %printer [-Wyacc] 2 | %printer {} | ^~~~~~~~ input.y:6.9-20: warning: POSIX Yacc does not support typed midrule actions [-Wyacc] 6 | a: { $$ = 42; } { $$ = $1; }; | ^~~~~~~~~~~~ input.y:7.4-9: warning: POSIX Yacc does not support %empty [-Wyacc] 7 | b: %empty { $$ = 42; }; | ^~~~~~ ]]) AT_CLEANUP ## -------------- ## ## Yacc's %type. ## ## -------------- ## AT_SETUP([Yacc's %type]) AT_DATA([input.y], [[%token TOKEN1 %nterm nterm1 %type TOKEN1 TOKEN2 "TOKEN3" nterm1 nterm2 nterm3 '+' %token TOKEN2 %nterm nterm2 %% expr: nterm1 nterm2 nterm3 nterm1: TOKEN1 nterm2: TOKEN2 nterm3: "TOKEN3" ]]) AT_BISON_CHECK([-fcaret -Wyacc input.y], [0], [], [[input.y:2.1-6: warning: POSIX Yacc does not support %nterm [-Wyacc] 2 | %nterm nterm1 | ^~~~~~ input.y:3.14-19: warning: POSIX yacc reserves %type to nonterminals [-Wyacc] 3 | %type TOKEN1 TOKEN2 "TOKEN3" nterm1 nterm2 nterm3 '+' | ^~~~~~ input.y:3.28-35: warning: POSIX Yacc does not support string literals [-Wyacc] 3 | %type TOKEN1 TOKEN2 "TOKEN3" nterm1 nterm2 nterm3 '+' | ^~~~~~~~ input.y:3.28-35: warning: POSIX yacc reserves %type to nonterminals [-Wyacc] 3 | %type TOKEN1 TOKEN2 "TOKEN3" nterm1 nterm2 nterm3 '+' | ^~~~~~~~ input.y:3.58-60: warning: POSIX yacc reserves %type to nonterminals [-Wyacc] 3 | %type TOKEN1 TOKEN2 "TOKEN3" nterm1 nterm2 nterm3 '+' | ^~~ input.y:5.1-6: warning: POSIX Yacc does not support %nterm [-Wyacc] 5 | %nterm nterm2 | ^~~~~~ input.y:3.21-26: warning: POSIX yacc reserves %type to nonterminals [-Wyacc] 3 | %type TOKEN1 TOKEN2 "TOKEN3" nterm1 nterm2 nterm3 '+' | ^~~~~~ input.y:10.9-16: warning: POSIX Yacc does not support string literals [-Wyacc] 10 | nterm3: "TOKEN3" | ^~~~~~~~ ]]) AT_CLEANUP ## ----------------------------- ## ## Invalid symbol declarations. ## ## ----------------------------- ## AT_SETUP([Invalid symbol declarations]) AT_DATA([input.y], [[%nterm expr "expression"; %nterm term 123; %nterm fact 124 "factor"; %nterm '+' '*'; %nterm "number"; %token "tok1" 1; %left "tok2" 2; %type "tok3" 3; %% expr: expr '+' term | term; term: term '*' fact | fact; fact: "number"; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:1.13-24: error: nonterminals cannot be given a string alias 1 | %nterm expr "expression"; | ^~~~~~~~~~~~ input.y:2.13-15: error: nonterminals cannot be given a token code 2 | %nterm term 123; | ^~~ input.y:3.13-15: error: nonterminals cannot be given a token code 3 | %nterm fact 124 "factor"; | ^~~ input.y:3.17-24: error: nonterminals cannot be given a string alias 3 | %nterm fact 124 "factor"; | ^~~~~~~~ input.y:4.8-10: error: character literals cannot be nonterminals 4 | %nterm '+' '*'; | ^~~ input.y:5.8-15: error: expected character literal or identifier or before string 5 | %nterm "number"; | ^~~~~~~~ input.y:6.8-13: error: expected character literal or identifier or before string 6 | %token "tok1" 1; | ^~~~~~ input.y:7.14: error: unexpected integer literal 7 | %left "tok2" 2; | ^ input.y:8.14: error: unexpected integer literal 8 | %type "tok3" 3; | ^ ]]) AT_CLEANUP ## ---------------------------- ## ## Redefining the error token. ## ## ---------------------------- ## AT_SETUP([Redefining the error token]) # We used to crash when trying to display the original definition of # "error", which is a builtin without any location. AT_BISON_OPTION_PUSHDEFS AT_DATA([input.y], [[%token error 123 %token error 124 %% exp: ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:2.8-12: warning: symbol error redeclared [-Wother] 2 | %token error 124 | ^~~~~ input.y:1.8-12: note: previous declaration 1 | %token error 123 | ^~~~~ input.y:2.14-16: error: redefining code of token error 2 | %token error 124 | ^~~ ]]) # While at it, make sure we properly used the user's number for # "error". I don't see what it buys us, but... AT_DATA([input.y], [[%{ #include #include ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE[ %} %token error 123 %% exp: %% int main (void) { assert (YYerror == 123); assert (YYTRANSLATE (YYEOF) == YYSYMBOL_YYEOF); assert (YYTRANSLATE (YYerror) == YYSYMBOL_YYerror); assert (YYTRANSLATE (YYUNDEF) == YYSYMBOL_YYUNDEF); return 0; } ]]) AT_FULL_COMPILE([input]) AT_PARSER_CHECK([input], 0) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## ------------------ ## ## Dangling aliases. ## ## ------------------ ## AT_SETUP([Dangling aliases]) AT_DATA([input.y], [[%token FOO "foo" %type "bar" %% expr: "foo" "bar" "baz" ]]) AT_BISON_CHECK([-fcaret -Wdangling input.y], [0], [], [[input.y:2.13-17: warning: string literal "bar" not attached to a symbol [-Wdangling-alias] 2 | %type "bar" | ^~~~~ input.y:4.19-23: warning: string literal "baz" not attached to a symbol [-Wdangling-alias] 4 | expr: "foo" "bar" "baz" | ^~~~~ ]]) AT_CLEANUP ## --------------------- ## ## Symbol declarations. ## ## --------------------- ## # Check the parsing of %token, %nterm, %type and %left... AT_SETUP([Symbol declarations]) AT_DATA([dump-symbols.m4], [[m4@&t@_define([b4_api_PREFIX], [YY]) m4@&t@_define([b4_symbol_dump], [$1, d@&t@nl b4_symbol_if([$1], [is_token], [Token], [Nonterminal]), d@&t@nl b4_symbol([$1], [tag]), d@&t@nl b4_symbol([$1], [id]), d@&t@nl b4_symbol([$1], [code]), d@&t@nl b4_symbol([$1], [type]), ]) b4_output_begin([symbols.csv]) number, class, tag, id, code, type, b4_symbol_foreach([b4_symbol_dump])d@&t@nl b4_output_end ]]) AT_DATA([input.y], [[%token 'a' A1 1 "A1" A2 A3 "A3" A4 4 'b' B5 5 "B5" B6 B7 "B8" B9 9 'c' C10 10 "C10" C11 C12 "C12" C13 13 %left 'd' D20 20 "D20" D21 D22 "D22" D23 23 'e' E25 25 "E25" E26 E27 "E28" E29 29 'f' F30 30 "F30" F31 F32 "F32" F33 33 %type 'g' G40 "D40" G21 G22 G23 'h' H25 "H25" H26 H27 "H28" H29 'i' I30 "I30" I31 I32 "I32" I33 %nterm j60 j61 j62 j63 k75 k76 k77 k79 l80 l81 l82 l83 %% exp:; ]]) AT_BISON_CHECK([-Wno-other -S./dump-symbols.m4 input.y]) AT_CHECK([cat symbols.csv], [], [[number, class, tag, id, code, type, 0, Token, "end of file", YYEOF, 0, , 1, Token, error, YYerror, 256, , 2, Token, "invalid token", YYUNDEF, 257, , 3, Token, 'a', , 97, , 4, Token, "A1", A1, 1, , 5, Token, A2, A2, 258, , 6, Token, "A3", A3, 259, , 7, Token, A4, A4, 4, , 8, Token, 'b', , 98, type_b, 9, Token, "B5", B5, 5, type_b, 10, Token, B6, B6, 260, type_b, 11, Token, "B8", B7, 261, type_b, 12, Token, B9, B9, 9, type_b, 13, Token, 'c', , 99, type_c, 14, Token, "C10", C10, 10, type_c, 15, Token, C11, C11, 262, type_c, 16, Token, "C12", C12, 263, type_c, 17, Token, C13, C13, 13, type_c, 18, Token, 'd', , 100, , 19, Token, D20, D20, 20, , 20, Token, "D20", , 264, , 21, Token, D21, D21, 265, , 22, Token, D22, D22, 266, , 23, Token, "D22", , 267, , 24, Token, D23, D23, 23, , 25, Token, 'e', , 101, type_e, 26, Token, E25, E25, 25, type_e, 27, Token, "E25", , 268, type_e, 28, Token, E26, E26, 269, type_e, 29, Token, E27, E27, 270, type_e, 30, Token, "E28", , 271, type_e, 31, Token, E29, E29, 29, type_e, 32, Token, 'f', , 102, type_f, 33, Token, F30, F30, 30, type_f, 34, Token, "F30", , 272, type_f, 35, Token, F31, F31, 273, type_f, 36, Token, F32, F32, 274, type_f, 37, Token, "F32", , 275, type_f, 38, Token, F33, F33, 33, type_f, 39, Token, 'g', , 103, , 40, Token, "D40", , 276, , 41, Token, 'h', , 104, type_h, 42, Token, "H25", , 277, type_h, 43, Token, "H28", , 278, type_h, 44, Token, 'i', , 105, type_i, 45, Token, "I30", , 279, type_i, 46, Token, "I32", , 280, type_i, 47, Nonterminal, $accept, , -1, , 48, Nonterminal, exp, exp, -1, , ]]) AT_CLEANUP ## ------------ ## ## Invalid $n. ## ## ------------ ## AT_SETUP([Invalid $n and @n]) AT_DATA([input.y], [[%% exp: %empty { $$ = $1 ; }; exp: %empty { @$ = @1 ; }; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:2.20-21: error: integer out of range: '$1' 2 | exp: %empty { $$ = $1 ; }; | ^~ input.y:3.20-21: error: integer out of range: '@1' 3 | exp: %empty { @$ = @1 ; }; | ^~ ]]) AT_CLEANUP ## -------------- ## ## Type Clashes. ## ## -------------- ## AT_SETUP([Type Clashes]) AT_DATA([input.y], [[%union { int bar; } %token foo %type exp %% exp: foo { $$; } foo { $2; } foo | foo | %empty ; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:5.12-13: error: $$ for the midrule at $2 of 'exp' has no declared type 5 | exp: foo { $$; } foo { $2; } foo | ^~ input.y:5.24-25: error: $2 of 'exp' has no declared type 5 | exp: foo { $$; } foo { $2; } foo | ^~ input.y:5.6-32: warning: type clash on default action: != <> [-Wother] 5 | exp: foo { $$; } foo { $2; } foo | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:6.6-8: warning: type clash on default action: != <> [-Wother] 6 | | foo | ^~~ input.y:7.6-11: warning: empty rule for typed nonterminal, and no action [-Wother] 7 | | %empty | ^~~~~~ ]]) AT_CLEANUP # _AT_UNUSED_VALUES_DECLARATIONS() # -------------------------------- # Generate the token, type, and destructor # declarations for the unused values tests. m4_define([_AT_UNUSED_VALUES_DECLARATIONS], [[[%token INT; %type a b c d e f g h i j k l m n o; %destructor { destroy ($$); } ;]]]) # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES) # ---------------------------------------------------------------- # Generate a grammar to test unused values, and compile it. If # DECLARATIONS_AFTER is set, then the token, type, and destructor # declarations are generated after the rules rather than before. If # CHECK_MIDRULE_VALUES is set, then --warnings=midrule-values is set. m4_define([AT_CHECK_UNUSED_VALUES], [AT_DATA([input.y], m4_ifval([$1], [ ], [_AT_UNUSED_VALUES_DECLARATIONS ])[[%% start: 'a' a { $][2; } | 'b' b { $][2; } | 'c' c { $][2; } | 'd' d { $][2; } | 'e' e { $][2; } | 'f' f { $][2; } | 'g' g { $][2; } | 'h' h { $][2; } | 'i' i { $][2; } | 'j' j { $][2; } | 'k' k { $][2; } | 'l' l { $][2; } | 'm' m { $][2; } | 'n' n { $][2; } | 'o' o { $][2; } ; a: INT | INT { } INT { } INT { }; b: INT | %empty; c: INT | INT { $][1; } INT { $2; } INT { $4; }; d: INT | INT { } INT { $][1; } INT { $2; }; e: INT | INT { } INT { } INT { $][1; }; f: INT | INT { } INT { } INT { $][$ = $][1 + $][3 + $][5; }; g: INT | INT { $$; } INT { $$; } INT { }; h: INT | INT { $$; } INT { $$ = $2; } INT { }; i: INT | INT INT { } { $][$ = $][1 + $][2; }; j: INT | INT INT { $$ = 1; } { $][$ = $][1 + $][2; }; k: INT | INT INT { $$; } { $$ = $3; } { }; l: INT | INT { $$ = $1; } INT { $$ = $2 + $3; } INT { $$ = $4 + $5; }; m: INT | INT { $][$ = $][1; } INT { $][$ = $][2 + $][3; } INT { $][$ = $][4 + $][5; }; n: INT | INT { } INT { } INT { }; o: INT | INT { } INT { } INT { $][$ = $][1 + $][2 + $][3 + $][4 + $][5; }; ]]m4_ifval([$1], [ _AT_UNUSED_VALUES_DECLARATIONS]) ) AT_BISON_CHECK(m4_ifval([$2], [--warnings=midrule-values ])[-fcaret input.y], [0], [], [[input.y:12.10-32: warning: unset value: $][$ [-Wother] 12 | a: INT | INT { } INT { } INT { }; | ^~~~~~~~~~~~~~~~~~~~~~~ input.y:12.10-12: warning: unused value: $][1 [-Wother] 12 | a: INT | INT { } INT { } INT { }; | ^~~ input.y:12.18-20: warning: unused value: $][3 [-Wother] 12 | a: INT | INT { } INT { } INT { }; | ^~~ input.y:12.26-28: warning: unused value: $][5 [-Wother] 12 | a: INT | INT { } INT { } INT { }; | ^~~ input.y:13.10-15: warning: empty rule for typed nonterminal, and no action [-Wother] 13 | b: INT | %empty; | ^~~~~~ ]]m4_ifval([$2], [[[input.y:14.14-20: warning: unset value: $][$ [-Wmidrule-values] 14 | c: INT | INT { $][1; } INT { $2; } INT { $4; }; | ^~~~~~~ input.y:14.26-41: warning: unset value: $][$ [-Wmidrule-values] 14 | c: INT | INT { $][1; } INT { $2; } INT { $4; }; | ^~~~~~~~~~~~~~~~ ]]])[[input.y:14.10-62: warning: unset value: $][$ [-Wother] 14 | c: INT | INT { $][1; } INT { $2; } INT { $4; }; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:14.22-24: warning: unused value: $][3 [-Wother] 14 | c: INT | INT { $][1; } INT { $2; } INT { $4; }; | ^~~ input.y:14.43-45: warning: unused value: $][5 [-Wother] 14 | c: INT | INT { $][1; } INT { $2; } INT { $4; }; | ^~~ ]]m4_ifval([$2], [[[input.y:15.14-16: warning: unset value: $][$ [-Wmidrule-values] 15 | d: INT | INT { } INT { $][1; } INT { $2; }; | ^~~ ]]])[[input.y:15.10-49: warning: unset value: $][$ [-Wother] 15 | d: INT | INT { } INT { $][1; } INT { $2; }; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:15.18-20: warning: unused value: $][3 [-Wother] 15 | d: INT | INT { } INT { $][1; } INT { $2; }; | ^~~ input.y:15.30-32: warning: unused value: $][5 [-Wother] 15 | d: INT | INT { } INT { $][1; } INT { $2; }; | ^~~ input.y:16.10-37: warning: unset value: $][$ [-Wother] 16 | e: INT | INT { } INT { } INT { $][1; }; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:16.18-20: warning: unused value: $][3 [-Wother] 16 | e: INT | INT { } INT { } INT { $][1; }; | ^~~ input.y:16.27-29: warning: unused value: $][5 [-Wother] 16 | e: INT | INT { } INT { } INT { $][1; }; | ^~~ input.y:18.10-58: warning: unset value: $][$ [-Wother] 18 | g: INT | INT { $$; } INT { $$; } INT { }; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:18.10-12: warning: unused value: $][1 [-Wother] 18 | g: INT | INT { $$; } INT { $$; } INT { }; | ^~~ ]]m4_ifval([$2], [[[input.y:18.14-29: warning: unused value: $][2 [-Wmidrule-values] 18 | g: INT | INT { $$; } INT { $$; } INT { }; | ^~~~~~~~~~~~~~~~ ]]])[[input.y:18.31-33: warning: unused value: $][3 [-Wother] 18 | g: INT | INT { $$; } INT { $$; } INT { }; | ^~~ ]]m4_ifval([$2], [[[input.y:18.35-50: warning: unused value: $][4 [-Wmidrule-values] 18 | g: INT | INT { $$; } INT { $$; } INT { }; | ^~~~~~~~~~~~~~~~ ]]])[[input.y:18.52-54: warning: unused value: $][5 [-Wother] 18 | g: INT | INT { $$; } INT { $$; } INT { }; | ^~~ input.y:19.10-72: warning: unset value: $][$ [-Wother] 19 | h: INT | INT { $$; } INT { $$ = $2; } INT { }; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:19.10-12: warning: unused value: $][1 [-Wother] 19 | h: INT | INT { $$; } INT { $$ = $2; } INT { }; | ^~~ input.y:19.31-33: warning: unused value: $][3 [-Wother] 19 | h: INT | INT { $$; } INT { $$ = $2; } INT { }; | ^~~ ]]m4_ifval([$2], [[[input.y:19.35-64: warning: unused value: $][4 [-Wmidrule-values] 19 | h: INT | INT { $$; } INT { $$ = $2; } INT { }; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ]]])[[input.y:19.66-68: warning: unused value: $][5 [-Wother] 19 | h: INT | INT { $$; } INT { $$ = $2; } INT { }; | ^~~ ]]m4_ifval([$2], [[[input.y:21.18-37: warning: unused value: $][3 [-Wmidrule-values] 21 | j: INT | INT INT { $$ = 1; } { $][$ = $][1 + $][2; }; | ^~~~~~~~~~~~~~~~~~~~ ]]])[[input.y:22.10-68: warning: unset value: $][$ [-Wother] 22 | k: INT | INT INT { $$; } { $$ = $3; } { }; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:22.10-12: warning: unused value: $][1 [-Wother] 22 | k: INT | INT INT { $$; } { $$ = $3; } { }; | ^~~ input.y:22.14-16: warning: unused value: $][2 [-Wother] 22 | k: INT | INT INT { $$; } { $$ = $3; } { }; | ^~~ ]]m4_ifval([$2], [[[input.y:22.35-64: warning: unused value: $][4 [-Wmidrule-values] 22 | k: INT | INT INT { $$; } { $$ = $3; } { }; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ]]])[[input.y:25.23-25: warning: unset value: $][$ [-Wother] 25 | n: INT | INT { } INT { } INT { }; | ^~~ input.y:25.40-42: warning: unset value: $][$ [-Wother] 25 | n: INT | INT { } INT { } INT { }; | ^~~ input.y:25.10-50: warning: unset value: $][$ [-Wother] 25 | n: INT | INT { } INT { } INT { }; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:25.10-12: warning: unused value: $][1 [-Wother] 25 | n: INT | INT { } INT { } INT { }; | ^~~ input.y:25.23-25: warning: unused value: $][2 [-Wother] 25 | n: INT | INT { } INT { } INT { }; | ^~~ input.y:25.27-29: warning: unused value: $][3 [-Wother] 25 | n: INT | INT { } INT { } INT { }; | ^~~ input.y:25.40-42: warning: unused value: $][4 [-Wother] 25 | n: INT | INT { } INT { } INT { }; | ^~~ input.y:25.44-46: warning: unused value: $][5 [-Wother] 25 | n: INT | INT { } INT { } INT { }; | ^~~ input.y:26.23-25: warning: unset value: $][$ [-Wother] 26 | o: INT | INT { } INT { } INT { $][$ = $][1 + $][2 + $][3 + $][4 + $][5; }; | ^~~ input.y:26.40-42: warning: unset value: $][$ [-Wother] 26 | o: INT | INT { } INT { } INT { $][$ = $][1 + $][2 + $][3 + $][4 + $][5; }; | ^~~ ]]) ]) ## --------------- ## ## Unused values. ## ## --------------- ## AT_SETUP([Unused values]) AT_CHECK_UNUSED_VALUES AT_CHECK_UNUSED_VALUES(, [1]) AT_CLEANUP ## ------------------------------------------ ## ## Unused values before symbol declarations. ## ## ------------------------------------------ ## AT_SETUP([Unused values before symbol declarations]) AT_CHECK_UNUSED_VALUES([1]) AT_CHECK_UNUSED_VALUES([1], [1]) AT_CLEANUP ## ------------------- ## ## Symbol redeclared. ## ## ------------------- ## AT_SETUP([Symbol redeclared]) AT_DATA([[input.y]], [[%token FOO FOO %token BAR 12 BAR 12 %token EOF 0 EOF 0 %% exp: FOO BAR ]]) AT_BISON_CHECK([-fcaret input.y], [0], [], [[input.y:1.12-14: warning: symbol FOO redeclared [-Wother] 1 | %token FOO FOO | ^~~ input.y:1.8-10: note: previous declaration 1 | %token FOO FOO | ^~~ input.y:2.15-17: warning: symbol BAR redeclared [-Wother] 2 | %token BAR 12 BAR 12 | ^~~ input.y:2.8-10: note: previous declaration 2 | %token BAR 12 BAR 12 | ^~~ input.y:3.14-16: warning: symbol EOF redeclared [-Wother] 3 | %token EOF 0 EOF 0 | ^~~ input.y:3.8-10: note: previous declaration 3 | %token EOF 0 EOF 0 | ^~~ ]]) AT_CLEANUP ## ---------------- ## ## EOF redeclared. ## ## ---------------- ## AT_SETUP([EOF redeclared]) # We used to crash when redefining a token after having defined EOF. # See https://lists.gnu.org/r/bug-bison/2020-08/msg00008.html. AT_DATA([[input.y]], [[%token FOO BAR FOO 0 %% input: %empty ]]) AT_BISON_CHECK([-fcaret input.y], [0], [], [[input.y:1.16-18: warning: symbol FOO redeclared [-Wother] 1 | %token FOO BAR FOO 0 | ^~~ input.y:1.8-10: note: previous declaration 1 | %token FOO BAR FOO 0 | ^~~ ]]) AT_CLEANUP ## --------------------------- ## ## Symbol class redefinition. ## ## --------------------------- ## AT_SETUP([Symbol class redefinition]) AT_DATA([[input.y]], [[%token FOO %nterm FOO BAR %token BAR %nterm error // The token error cannot be redefined as an nterm. %% FOO: BAR BAR: ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:2.8-10: error: symbol FOO redeclared as a nonterminal 2 | %nterm FOO BAR | ^~~ input.y:1.8-10: note: previous definition 1 | %token FOO | ^~~ input.y:3.8-10: error: symbol BAR redeclared as a token 3 | %token BAR | ^~~ input.y:2.12-14: note: previous definition 2 | %nterm FOO BAR | ^~~ input.y:4.8-12: error: symbol error redeclared as a nonterminal 4 | %nterm error // The token error cannot be redefined as an nterm. | ^~~~~ input.y:6.1-3: error: rule given for FOO, which is a token 6 | FOO: BAR | ^~~ ]]) AT_CLEANUP ## --------------------------------------------- ## ## Default %printer and %destructor redeclared. ## ## --------------------------------------------- ## AT_SETUP([Default %printer and %destructor redeclared]) # AT_TEST([*]) # ------------ m4_pushdef([AT_TEST], [AT_DATA([[input.y]], [[%destructor { destroy ($$); } <$1> <$1> %printer { print ($$); } <$1> <$1> %destructor { destroy ($$); } <$1> %printer { print ($$); } <$1> %% start: %empty; %destructor { destroy ($$); } <$1>; %printer { print ($$); } <$1>; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:1.13-29: error: %destructor redeclaration for <> 1 | %destructor { destroy ($$); } <> <> | ^~~~~~~~~~~~~~~~~ input.y:1.13-29: note: previous declaration 1 | %destructor { destroy ($$); } <> <> | ^~~~~~~~~~~~~~~~~ input.y:2.10-24: error: %printer redeclaration for <> 2 | %printer { print ($$); } <> <> | ^~~~~~~~~~~~~~~ input.y:2.10-24: note: previous declaration 2 | %printer { print ($$); } <> <> | ^~~~~~~~~~~~~~~ input.y:4.13-29: error: %destructor redeclaration for <> 4 | %destructor { destroy ($$); } <> | ^~~~~~~~~~~~~~~~~ input.y:1.13-29: note: previous declaration 1 | %destructor { destroy ($$); } <> <> | ^~~~~~~~~~~~~~~~~ input.y:5.10-24: error: %printer redeclaration for <> 5 | %printer { print ($$); } <> | ^~~~~~~~~~~~~~~ input.y:2.10-24: note: previous declaration 2 | %printer { print ($$); } <> <> | ^~~~~~~~~~~~~~~ input.y:11.13-29: error: %destructor redeclaration for <> 11 | %destructor { destroy ($$); } <>; | ^~~~~~~~~~~~~~~~~ input.y:1.13-29: note: previous declaration 1 | %destructor { destroy ($$); } <> <> | ^~~~~~~~~~~~~~~~~ input.y:12.10-24: error: %printer redeclaration for <> 12 | %printer { print ($$); } <>; | ^~~~~~~~~~~~~~~ input.y:2.10-24: note: previous declaration 2 | %printer { print ($$); } <> <> | ^~~~~~~~~~~~~~~ ]]) ]) AT_TEST([], [], []) AT_TEST([], [*], [*]) m4_popdef([AT_TEST]) AT_CLEANUP ## ---------------------------------------------- ## ## Per-type %printer and %destructor redeclared. ## ## ---------------------------------------------- ## AT_SETUP([Per-type %printer and %destructor redeclared]) AT_DATA([[input.y]], [[%destructor { destroy ($$); } %printer { print ($$); } %destructor { destroy ($$); } %printer { print ($$); } %% start: %empty; %destructor { destroy ($$); } ; %printer { print ($$); } ; ]]) AT_BISON_CHECK([input.y], [1], [], [[input.y:4.13-29: error: %destructor redeclaration for input.y:1.13-29: note: previous declaration input.y:4.13-29: error: %destructor redeclaration for input.y:1.13-29: note: previous declaration input.y:5.10-24: error: %printer redeclaration for input.y:2.10-24: note: previous declaration input.y:5.10-24: error: %printer redeclaration for input.y:2.10-24: note: previous declaration input.y:11.13-29: error: %destructor redeclaration for input.y:1.13-29: note: previous declaration input.y:11.13-29: error: %destructor redeclaration for input.y:1.13-29: note: previous declaration input.y:12.10-24: error: %printer redeclaration for input.y:2.10-24: note: previous declaration input.y:12.10-24: error: %printer redeclaration for input.y:2.10-24: note: previous declaration ]]) AT_CLEANUP ## ------------------- ## ## Undefined symbols. ## ## ------------------- ## AT_SETUP([Undefined symbols]) AT_DATA([[input.y]], [[%printer {} foo baz %destructor {} bar %type qux %% exp: bar; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:1.13-15: warning: symbol 'foo' is used, but is not defined as a token and has no rules [-Wother] 1 | %printer {} foo baz | ^~~ input.y:1.17-19: warning: symbol 'baz' is used, but is not defined as a token and has no rules [-Wother] 1 | %printer {} foo baz | ^~~ input.y:2.16-18: error: symbol 'bar' is used, but is not defined as a token and has no rules 2 | %destructor {} bar | ^~~ input.y:3.13-15: warning: symbol 'qux' is used, but is not defined as a token and has no rules [-Wother] 3 | %type qux | ^~~ ]]) AT_CLEANUP ## ----------------------------------------------------- ## ## Unassociated types used for a printer or destructor. ## ## ----------------------------------------------------- ## AT_SETUP([Unassociated types used for a printer or destructor]) AT_DATA([[input.y]], [[%token tag1 %type tag2 %printer { } %destructor { } %% exp: tag1 { $1; } | tag2 { $1; } tag2: "a" { $$; } ]]) AT_BISON_CHECK([input.y], [0], [], [[input.y:4.22-28: warning: type is used, but is not associated to any symbol [-Wother] input.y:5.25-31: warning: type is used, but is not associated to any symbol [-Wother] ]]) AT_CLEANUP ## --------------------------------- ## ## Useless printers or destructors. ## ## --------------------------------- ## AT_SETUP([Useless printers or destructors]) # AT_TEST([INPUT], [STDERR]) # -------------------------- m4_pushdef([AT_TEST], [AT_DATA([[input.y]], [$1 ]) AT_BISON_CHECK([input.y], [0], [], [$2 ])]) AT_TEST([[%token token1 %token token2 %token token3 %token token4 %token token51 token52 %token token61 token62 %token token7 %printer {} token1 %destructor {} token2 %printer {} token51 %destructor {} token61 %printer {} token7 %printer {} %destructor {} %printer {} %destructor {} %printer {} %destructor {} %destructor {} %% exp: "a";]], [[input.y:16.13-19: warning: useless %printer for type [-Wother] input.y:17.16-22: warning: useless %destructor for type [-Wother]]]) # If everybody is typed, <> is useless. AT_TEST([[%type exp %token a %printer {} <> <*> %% exp: a;]], [[input.y:3.13-14: warning: useless %printer for type <> [-Wother]]]) # If nobody is typed, <*> is useless. AT_TEST([[%token a %printer {} <> <*> %% exp: a;]], [[input.y:2.16-18: warning: useless %printer for type <*> [-Wother]]]) m4_popdef([AT_TEST]) AT_CLEANUP ## ---------------------------------------- ## ## Unused values with default %destructor. ## ## ---------------------------------------- ## AT_SETUP([Unused values with default %destructor]) AT_DATA([[input.y]], [[%destructor { destroy ($$); } <> %type tagged %% start: end end tagged tagged { $1; $3; } ; end: { } ; tagged: { } ; ]]) AT_BISON_CHECK([-fcaret input.y], [0], [], [[input.y:6.8-45: warning: unset value: $$ [-Wother] 6 | start: end end tagged tagged { $1; $3; } ; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:6.12-14: warning: unused value: $2 [-Wother] 6 | start: end end tagged tagged { $1; $3; } ; | ^~~ input.y:7.6-8: warning: unset value: $$ [-Wother] 7 | end: { } ; | ^~~ ]]) AT_DATA([[input.y]], [[%destructor { destroy ($$); } <*> %type tagged %% start: end end tagged tagged { $1; $3; } ; end: { } ; tagged: { } ; ]]) AT_BISON_CHECK([input.y], [0], [], [[input.y:6.23-28: warning: unused value: $4 [-Wother] input.y:8.9-11: warning: unset value: $$ [-Wother] ]]) AT_CLEANUP ## ----------------------------------------- ## ## Unused values with per-type %destructor. ## ## ----------------------------------------- ## AT_SETUP([Unused values with per-type %destructor]) AT_DATA([[input.y]], [[%destructor { destroy ($$); } %type start end %% start: end end { $1; } ; end: { } ; ]]) AT_BISON_CHECK([-fcaret input.y], [0], [], [[input.y:6.8-22: warning: unset value: $$ [-Wother] 6 | start: end end { $1; } ; | ^~~~~~~~~~~~~~~ input.y:6.12-14: warning: unused value: $2 [-Wother] 6 | start: end end { $1; } ; | ^~~ input.y:7.6-8: warning: unset value: $$ [-Wother] 7 | end: { } ; | ^~~ ]]) AT_CLEANUP ## ------------------ ## ## Duplicate string. ## ## ------------------ ## AT_SETUP([Duplicate string]) AT_BISON_OPTION_PUSHDEFS AT_DATA([input.y], [[/* 'Bison -v' used to dump core when two tokens are defined with the same string, as LE and GE below. */ %token NUM %token LE "<=" %token GE "<=" %% exp: '(' exp ')' | NUM ; %% ]]) AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([-v -o input.c input.y], 0, [], [[input.y:6.11-14: warning: symbol "<=" used more than once as a literal string [-Wother] ]]) AT_CLEANUP ## ------------------ ## ## Token collisions. ## ## ------------------ ## AT_SETUP([Token collisions]) AT_DATA([[input.y]], [[%token FOO 42 "foo" BAR 42 "foo" %% exp: FOO BAR; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:2.17-21: warning: symbol "foo" used more than once as a literal string [-Wother] 2 | BAR 42 "foo" | ^~~~~ input.y:2.10-12: error: code 42 reassigned to token BAR 2 | BAR 42 "foo" | ^~~ input.y:1.15-19: note: previous declaration for "foo" 1 | %token FOO 42 "foo" | ^~~~~ ]]) AT_CLEANUP ## ---------------------- ## ## Incompatible Aliases. ## ## ---------------------- ## AT_SETUP([Incompatible Aliases]) m4_pushdef([AT_TEST], [AT_DATA([input.y], [$1]) AT_BISON_CHECK([-fcaret input.y], [1], [], [$2]) ]) # Use the string-alias first to check the order between "first # declaration" and second. AT_TEST([[%token foo "foo" %type "foo" %type foo %% exp: foo; ]], [[input.y:3.13-15: error: %type redeclaration for foo 3 | %type foo | ^~~ input.y:2.13-17: note: previous declaration 2 | %type "foo" | ^~~~~ ]]) AT_TEST([[%token foo "foo" %printer {bar} "foo" %printer {baz} foo %% exp: foo; ]], [[input.y:3.10-14: error: %printer redeclaration for foo 3 | %printer {baz} foo | ^~~~~ input.y:2.10-14: note: previous declaration 2 | %printer {bar} "foo" | ^~~~~ ]]) AT_TEST([[%token foo "foo" %destructor {bar} "foo" %destructor {baz} foo %% exp: foo; ]], [[input.y:3.13-17: error: %destructor redeclaration for foo 3 | %destructor {baz} foo | ^~~~~ input.y:2.13-17: note: previous declaration 2 | %destructor {bar} "foo" | ^~~~~ ]]) AT_TEST([[%token foo "foo" %left "foo" %left foo %% exp: foo; ]], [[input.y:3.1-5: error: %left redeclaration for foo 3 | %left foo | ^~~~~ input.y:2.1-5: note: previous declaration 2 | %left "foo" | ^~~~~ ]]) # This time, declare the alias after its use. # Precedence/associativity. AT_TEST([[%left "foo" %left foo %token foo "foo" %% exp: foo; ]], [[input.y:2.1-5: error: %left redeclaration for foo 2 | %left foo | ^~~~~ input.y:1.1-5: note: previous declaration 1 | %left "foo" | ^~~~~ ]]) # Printer. AT_TEST([[%printer {} "foo" %printer {} foo %token foo "foo" %% exp: foo; ]], [[input.y:2.10-11: error: %printer redeclaration for foo 2 | %printer {} foo | ^~ input.y:1.10-11: note: previous declaration 1 | %printer {} "foo" | ^~ ]]) # Destructor. AT_TEST([[%destructor {} "foo" %destructor {} foo %token foo "foo" %% exp: foo; ]], [[input.y:2.13-14: error: %destructor redeclaration for foo 2 | %destructor {} foo | ^~ input.y:1.13-14: note: previous declaration 1 | %destructor {} "foo" | ^~ ]]) m4_popdef([AT_TEST]) AT_CLEANUP ## ----------------------- ## ## Torturing the Scanner. ## ## ----------------------- ## # Be sure to compile and run, so that the C compiler checks what # we do. AT_SETUP([Torturing the Scanner]) AT_BISON_OPTION_PUSHDEFS AT_DATA([input.y], [{} ]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:1.1-2: error: unexpected {...} 1 | {} | ^~ ]]) # Clang chokes on some of our comments, because it tries to "parse" # some documentation directives in the comments: # # input.c:166:50: error: '\a' command does not have a valid word argument [-Werror,-Wdocumentation] # FAKE = 258 /* "fake [] \a\b\f\n\r\t\v\"'?\\[\\ ??!??'??(??)??-??/?? \001\001" */ # ~~^ AT_DATA_GRAMMAR([input.y], [[%code requires { #if defined __clang__ && 10 <= __clang_major__ # pragma clang diagnostic ignored "-Wdocumentation" #endif } %{ /* This is seen in GCC: a %{ and %} in middle of a comment. */ const char *foo = "So %{ and %} can be here too."; #if 0 /* These examples test Bison while not stressing C compilers too much. Many C compilers mishandle backslash-newlines, so this part of the test is inside "#if 0". The comment and string are written so that the "#endif" will be seen regardless of the C compiler bugs that we know about, namely: HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a comment. The Apple Darwin compiler (as of late 2002) mishandles \\[newline]' within a character constant. */ /\ * A comment with backslash-newlines in it. %} *\ \ / /* { Close the above comment, if the C compiler mishandled it. */ char str[] = "\\ " A string with backslash-newlines in it %{ %} \\ \ ""; char apostrophe = '\''; #endif #include #include #include %} /* %{ and %} can be here too. */ %{ /* Exercise pre-prologue dependency to %union. */ typedef int value; %} /* Exercise M4 quoting: '@:>@@:>@', 0. */ /* Also exercise %union. */ %union { value ival; /* A comment to exercise an old bug. */ }; /* Exercise post-prologue dependency to %union. */ %{ static YYSTYPE value_as_yystype (value val); /* Exercise quotes in declarations. */ char quote[] = "@:>@@:>@,"; %} %{ ]AT_YYERROR_DECLARE[ ]AT_YYLEX_DECLARE[ %} %type '@<:@' /* Exercise quotes in strings. */ %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/?? \x1\1" /* Beware of the generated comments that embed string aliases that might close the comment. */ %token COMMENT_CLOSE "*/" %token COMMENT "/* comment */" %% /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1. */ exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt { /* Exercise quotes in braces. */ char tmp[] = "@<:@%c@:>@,\n"; printf (tmp, $1); } ; two: '\x000000000000000000000000000000000000000000000000000000000000000000002'; oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_'; output.or.oline.opt: %empty;|oline;;|output;;; output: '#' 'o' 'u' 't' 'p' 'u' 't' ' '; %% /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2. */ static YYSTYPE value_as_yystype (value val) { YYSTYPE res; res.ival = val; return res; } ]AT_YYERROR_DEFINE[ static int yylex (void) { static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\ #output "; /* " */ enum { input_elts = sizeof input }; (void) input_elts; static int toknum; assert (0 <= toknum && toknum < input_elts); yylval = value_as_yystype (input[toknum]); return input[toknum++]; } ]]) # Pacify Emacs'font-lock-mode: " AT_DATA([main.c], [[typedef int value; #include "input.h" int yyparse (void); ]AT_MAIN_DEFINE[ ]]) AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([-d -v -o input.c input.y]) AT_COMPILE([input.o]) AT_COMPILE([main.o]) AT_COMPILE([input], [input.o main.o]) AT_PARSER_CHECK([input], 0, [[[@<:@], ]]) AT_CLEANUP ## ---------------------- ## ## Typed symbol aliases. ## ## ---------------------- ## AT_SETUP([Typed symbol aliases]) # Bison 2.0 broke typed symbol aliases - ensure they work. AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([input.y], [[%union { int val; }; %token MY_TOKEN "MY TOKEN" %type exp %% exp: "MY TOKEN"; %% ]]) AT_BISON_CHECK([-o input.c input.y]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## --------- ## ## Require. ## ## --------- ## m4_define([AT_CHECK_REQUIRE], [AT_SETUP([Require $1]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([input.y], [[%require "$1"; %% empty_file: %empty; ]]) AT_BISON_CHECK([-o input.c input.y], $2, [], ignore) AT_BISON_OPTION_POPDEFS AT_CLEANUP ]) AT_CHECK_REQUIRE(1.0, 0) AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0) ## FIXME: Some day augment this version number. AT_CHECK_REQUIRE(100.0, 63) ## ------------------------------------- ## ## String aliases for character tokens. ## ## ------------------------------------- ## AT_SETUP([String aliases for character tokens]) # Bison once thought a character token and its alias were different # symbols with the same code. AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([input.y], [[%token 'a' "a" %% start: 'a'; %% ]]) AT_BISON_CHECK([-o input.c input.y]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## -------------- ## ## Symbol names. ## ## -------------- ## AT_SETUP([Symbols]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([input.y], [[%token WITH-DASH %token WITHOUT_DASH "WITHOUT-DASH" %token WITH.PERIOD %token WITHOUT_PERIOD "WITHOUT.PERIOD" %code { ]AT_YYERROR_DECLARE[ ]AT_YYLEX_DECLARE[ } %% start: with-dash without_dash with.period without_period; with-dash: WITH-DASH; without_dash: "WITHOUT-DASH"; with.period: WITH.PERIOD; without_period: "WITHOUT.PERIOD"; %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE[ ]]) # POSIX Yacc accept periods, but not dashes. AT_BISON_CHECK([--yacc input.y], [], [], [[input.y:1.1-5: warning: POSIX Yacc does not support %code [-Wyacc] input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc] input.y:10.21-34: warning: POSIX Yacc does not support string literals [-Wyacc] input.y:12.23-38: warning: POSIX Yacc does not support string literals [-Wyacc] input.y:13.1-5: warning: POSIX Yacc does not support %code [-Wyacc] input.y:20.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc] input.y:22.15-28: warning: POSIX Yacc does not support string literals [-Wyacc] input.y:24.17-32: warning: POSIX Yacc does not support string literals [-Wyacc] ]]) # Dashes are fine for GNU Bison. AT_BISON_CHECK([-o input.c input.y]) # Make sure we don't export silly token identifiers with periods or dashes. AT_COMPILE([input.o]) # Periods are genuine letters, they can start identifiers. # Digits and dashes cannot. AT_DATA_GRAMMAR([input.y], [[%token .GOOD -GOOD 1NV4L1D -123 %% start: .GOOD GOOD ]]) AT_BISON_CHECK([-o input.c input.y], [1], [], [[input.y:10.10: error: invalid character: '-' input.y:11.10-16: error: invalid identifier: '1NV4L1D' input.y:12.10: error: invalid character: '-' ]]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## ----------------- ## ## Numbered tokens. ## ## ----------------- ## AT_SETUP([Numbered tokens]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([redecl.y], [[%token DECIMAL_1 11259375 HEXADECIMAL_1 0xabcdef HEXADECIMAL_2 0xFEDCBA DECIMAL_2 16702650 %% start: DECIMAL_1 HEXADECIMAL_2; ]]) AT_BISON_CHECK([redecl.y], [1], [], [[redecl.y:10.10-22: error: code 11259375 reassigned to token HEXADECIMAL_1 redecl.y:9.8-16: note: previous declaration for DECIMAL_1 redecl.y:12.10-18: error: code 16702650 reassigned to token DECIMAL_2 redecl.y:11.10-22: note: previous declaration for HEXADECIMAL_2 ]]) AT_DATA_GRAMMAR([too-large.y], [[%token TOO_LARGE_DEC 999999999999999999999 TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF %% start: TOO_LARGE_DEC TOO_LARGE_HEX %% ]]) AT_BISON_CHECK([too-large.y], [1], [], [[too-large.y:9.22-42: error: integer out of range: '999999999999999999999' too-large.y:9.22-42: error: code of token TOO_LARGE_DEC too large too-large.y:10.24-44: error: integer out of range: '0xFFFFFFFFFFFFFFFFFFF' too-large.y:10.24-44: error: code of token TOO_LARGE_HEX too large ]]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## --------------------- ## ## Unclosed constructs. ## ## --------------------- ## AT_SETUP([Unclosed constructs]) # Bison's scan-gram.l once forgot to STRING_FINISH () some unclosed # constructs, so they were prepended to whatever it STRING_GROW ()'ed # next. It also threw them away rather than returning them to the # parser. The effect was confusing subsequent error messages. AT_DATA([input.y], [[%token A "a %token B "b" %token AB "ab" // Used to complain that "ab" was already used. %token C '1 %token TWO "2" %token TICK_TWELVE "'12" // Used to complain that "'12" was already used. %% start: %empty; // Used to report a syntax error because it didn't see any kind of symbol // identifier. %type 'a ; %type "a ; // Used to report a syntax error because it didn't see braced code. %destructor { free ($$) ]]) AT_BISON_CHECK([-fcaret -o input.c input.y], 1, [], [[input.y:1.10-2.0: error: missing '"' at end of line 1 | %token A "a | ^~ input.y:4.10-5.0: error: missing "'" at end of line 4 | %token C '1 | ^~ input.y:14.11-15.0: error: missing "'" at end of line 14 | %type 'a | ^~ input.y:16.11-17.0: error: missing '"' at end of line 16 | %type "a | ^~ input.y:19.13-20.0: error: missing '}' at end of file 19 | %destructor { free ($$) | ^~~~~~~~~~~ input.y:20.1: error: unexpected end of file ]]) AT_CLEANUP ## ------------------------- ## ## %start after first rule. ## ## ------------------------- ## AT_SETUP([%start after first rule]) # Bison once complained that a %start after the first rule was a # redeclaration of the start symbol. AT_DATA([input.y], [[%% false_start: %empty; start: false_start ; %start start; ]]) AT_BISON_CHECK([-o input.c input.y]) AT_CLEANUP ## ------------------------- ## ## Duplicate %start symbol. ## ## ------------------------- ## AT_SETUP([Duplicate %start symbol]) AT_KEYWORDS([multistart]) AT_DATA([input.y], [[%start exp exp exp %% exp: %empty; ]]) AT_BISON_CHECK([-fcaret input.y], [0], [], [[input.y:1.12-14: warning: duplicate directive [-Wother] 1 | %start exp exp exp | ^~~ input.y:1.8-10: note: previous declaration 1 | %start exp exp exp | ^~~ input.y:1.16-18: warning: duplicate directive [-Wother] 1 | %start exp exp exp | ^~~ input.y:1.8-10: note: previous declaration 1 | %start exp exp exp | ^~~ input.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_DATA([input.y], [[%start exp foo exp %% exp: foo; foo: %empty; ]]) AT_BISON_CHECK([-fcaret input.y], [0], [], [[input.y:1.16-18: warning: duplicate directive [-Wother] 1 | %start exp foo exp | ^~~ input.y:1.8-10: note: previous declaration 1 | %start exp foo exp | ^~~ input.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_DATA([input.y], [[%start exp foo %start exp %% exp: foo; foo: %empty; ]]) AT_BISON_CHECK([-fcaret input.y], [0], [], [[input.y:2.8-10: warning: duplicate directive [-Wother] 2 | %start exp | ^~~ input.y:1.8-10: note: previous declaration 1 | %start exp foo | ^~~ input.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_CLEANUP ## ---------------- ## ## Rule for YYEOF. ## ## ---------------- ## AT_SETUP([Rule for YYEOF]) # We crashed when rules were given on YYEOF. # https://github.com/akimd/bison/issues/92. AT_DATA([input1.y], [[%% start: YYEOF; YYEOF: 'x'; ]]) AT_BISON_CHECK([input1.y], [1], [], [[input1.y:3.1-5: error: rule given for YYEOF, which is a token ]]) # This is ok, YYEOF is not special. AT_DATA([input2.y], [[%token MYEOF 0 %% start: YYEOF; YYEOF: 'x'; ]]) AT_BISON_CHECK([input2.y]) AT_CLEANUP ## --------------------- ## ## %prec takes a token. ## ## --------------------- ## AT_SETUP([%prec takes a token]) # Bison once allowed %prec sym where sym was a nonterminal. AT_DATA([input.y], [[%% start: PREC %prec PREC ; PREC: %empty; ]]) AT_BISON_CHECK([input.y], [1], [], [[input.y:3.1-4: error: rule given for PREC, which is a token ]]) AT_CLEANUP ## ------------------------------- ## ## %prec's token must be defined. ## ## ------------------------------- ## AT_SETUP([[%prec's token must be defined]]) # According to POSIX, a %prec token must be defined separately. AT_DATA([[input.y]], [[%% start: %prec PREC ; ]]) AT_BISON_CHECK([[input.y]], [[0]], [], [[input.y:2.8-17: warning: token for %prec is not defined: PREC [-Wother] ]]) AT_CLEANUP ## -------------------------------- ## ## Reject unused %code qualifiers. ## ## -------------------------------- ## AT_SETUP([Reject unused %code qualifiers]) AT_DATA([input-c.y], [[%code q {} %code bad {} %code bad {} %code format {} %% start: %empty; ]]) AT_BISON_CHECK([[input-c.y]], [[1]], [], [[input-c.y:1.7: error: %code qualifier 'q' is not used input-c.y:2.7-9: error: %code qualifier 'bad' is not used input-c.y:3.7-9: error: %code qualifier 'bad' is not used input-c.y:4.7-12: error: %code qualifier 'format' is not used ]]) AT_DATA([input-c-glr.y], [[%code q {} %code bad {} %code bad {} %% start: %empty; ]]) AT_BISON_CHECK([[input-c-glr.y]], [[1]], [], [[input-c-glr.y:1.7: error: %code qualifier 'q' is not used input-c-glr.y:2.7-9: error: %code qualifier 'bad' is not used input-c-glr.y:3.8-10: error: %code qualifier 'bad' is not used ]]) AT_DATA([input-c++.y], [[%code q {} %code bad {} %code q {} %% start: %empty; ]]) AT_BISON_CHECK([[input-c++.y]], [[1]], [], [[input-c++.y:1.7: error: %code qualifier 'q' is not used input-c++.y:2.7-9: error: %code qualifier 'bad' is not used input-c++.y:3.8: error: %code qualifier 'q' is not used ]]) AT_DATA([input-c++-glr.y], [[%code bad {} %code q {} %code q {} %% start: %empty; ]]) AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [], [[input-c++-glr.y:1.7-9: error: %code qualifier 'bad' is not used input-c++-glr.y:2.7: error: %code qualifier 'q' is not used input-c++-glr.y:3.7: error: %code qualifier 'q' is not used ]]) AT_DATA([special-char-@@.y], [[%code bad {} %code q {} %code q {} %% start: %empty; ]]) AT_BISON_CHECK([[special-char-@@.y]], [[1]], [], [[special-char-@@.y:1.7-9: error: %code qualifier 'bad' is not used special-char-@@.y:2.7: error: %code qualifier 'q' is not used special-char-@@.y:3.7: error: %code qualifier 'q' is not used ]]) AT_DATA([special-char-@:>@.y], [[%code bad {} %code q {} %code q {} %% start: %empty; ]]) AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [], [[special-char-@:>@.y:1.7-9: error: %code qualifier 'bad' is not used special-char-@:>@.y:2.7: error: %code qualifier 'q' is not used special-char-@:>@.y:3.7: error: %code qualifier 'q' is not used ]]) AT_CLEANUP ## ---------------- ## ## Multiple %code. ## ## ---------------- ## AT_SETUP([Multiple %code]) # Make sure that repeated arguments to %code are separated by # end-of-lines. At some point, a missing eol would leave synclines # appended to the previous value. Here, we use CPP directive to # introduce dependency on the absence/presence of the eol. AT_BISON_OPTION_PUSHDEFS AT_DATA([input.y], [[%code {#include } %code {#define A B} %code {#define B C} %code {#define C D} %code {#define D 42} %code { ]AT_YYERROR_DECLARE[ ]AT_YYLEX_DECLARE[ } %% start: %empty; %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE[ int main (void) { assert (A == 42); return 0; } ]]) AT_FULL_COMPILE([input]) AT_PARSER_CHECK([input]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## ---------------- ## ## %define errors. ## ## ---------------- ## AT_SETUP([%define errors]) AT_DATA([input-redefined.y], [[%define var "value1" %define var "value1" %define var "value2" %define special1 "@:>@" %define special2 "@<:@" %% start: %empty; ]]) AT_BISON_CHECK([[input-redefined.y]], [[1]], [], [[input-redefined.y:2.1-20: warning: %define variable 'var' redefined [-Wother] input-redefined.y:1.1-20: note: previous definition input-redefined.y:3.2-21: error: %define variable 'var' redefined input-redefined.y:2.1-20: note: previous definition input-redefined.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_DATA([input-unused.y], [[%define var "value" %% start: %empty; ]]) AT_BISON_CHECK([[input-unused.y]], [[1]], [], [[input-unused.y:1.1-19: error: %define variable 'var' is not used ]]) AT_CLEANUP ## ----------------------------------- ## ## %define, --define, --force-define. ## ## ----------------------------------- ## AT_SETUP([[%define, --define, --force-define]]) AT_DATA([[skel.c]], [[m4@&t@_divert_push(0)@ @output(b4_parser_file_name@)@ [var-dd: ]b4_percent_define_get([[var-dd]])[ var-ff: ]b4_percent_define_get([[var-ff]])[ var-dfg: ]b4_percent_define_get([[var-dfg]])[ var-fd: ]b4_percent_define_get([[var-fd]]) m4@&t@_divert_pop(0) ]]) AT_DATA([[input.y]], [[%define var-dfg "gram" %% start: %empty; ]]) AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \ -Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \ -Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \ -Fvar-fd=cmd-f -Dvar-fd=cmd-d \ --skeleton ./skel.c input.y]]) AT_CHECK([[cat input.tab.c]], [[0]], [[var-dd: cmd-d2 var-ff: cmd-f2 var-dfg: cmd-f var-fd: cmd-d ]]) AT_DATA([[input-dg.y]], [[%define var "gram" %% start: %empty; ]]) AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [], [[input-dg.y:1.1-18: error: %define variable 'var' redefined :3: note: previous definition input-dg.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_DATA([[input-dg.y]], [[%define var "gram" %% start: %empty; ]]) AT_BISON_CHECK([[-fcaret -Dvar=cmd-d input-dg.y]], [[1]], [], [[input-dg.y:1.1-18: error: %define variable 'var' redefined 1 | %define var "gram" | ^~~~~~~~~~~~~~~~~~ :4: note: previous definition input-dg.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_DATA([[input-unused.y]], [[%% start: %empty; ]]) AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [], [[:3: error: %define variable 'unused-d' is not used :4: error: %define variable 'unused-f' is not used ]]) AT_CLEANUP ## --------------------------- ## ## %define Boolean variables. ## ## --------------------------- ## AT_SETUP([["%define" Boolean variables]]) AT_DATA([Input.y], [[%language "Java" %define api.parser.class {Input} %define api.parser.public {maybe} %% start: %empty; ]]) AT_BISON_CHECK([[Input.y]], [1], [], [[Input.y:3.1-33: error: invalid value for %define Boolean variable 'api.parser.public' ]]) AT_CLEANUP ## ------------------------ ## ## %define code variables. ## ## ------------------------ ## AT_SETUP([["%define" code variables]]) m4_pushdef([AT_TEST], [AT_DATA([input.yy], [[%skeleton "lalr1.cc" %locations %define api.location.type ]$1[quux]$2[ %define api.namespace ]$1[quux]$2[ %define api.prefix ]$1[quux]$2[ %define api.token.prefix ]$1[quux]$2[ %token TOK // Otherwise api.token.prefix is unused. %% start: TOK; ]]) AT_BISON_CHECK([[input.yy]], [0], [], [[input.yy:2.$3: warning: %define variable 'api.location.type' requires '{...}' values [-Wdeprecated] input.yy:4.$3: warning: %define variable 'api.prefix' requires '{...}' values [-Wdeprecated] input.yy:5.$3: warning: %define variable 'api.token.prefix' requires '{...}' values [-Wdeprecated] input.yy:3.$3: warning: %define variable 'api.namespace' requires '{...}' values [-Wdeprecated] ]]) ]) AT_TEST([], [], [1-30]) AT_TEST(["], ["], [1-32]) m4_popdef([AT_TEST]) AT_CLEANUP ## --------------------------- ## ## %define keyword variables. ## ## --------------------------- ## AT_SETUP([["%define" keyword variables]]) m4_pushdef([AT_TEST], [AT_DATA([input.y], [[%define api.pure ]$1[true]$2[ %define api.push-pull ]$1[both]$2[ %define lr.default-reduction ]$1[most]$2[ %define lr.keep-unreachable-state ]$1[true]$2[ %define lr.type ]$1[lalr]$2[ %% exp: %empty ]]) AT_BISON_CHECK([[input.y]], [0], [], [[input.y:5.1-40: warning: %define variable 'lr.type' requires keyword values [-Wdeprecated] input.y:3.1-40: warning: %define variable 'lr.default-reduction' requires keyword values [-Wdeprecated] input.y:4.1-40: warning: %define variable 'lr.keep-unreachable-state' requires keyword values [-Wdeprecated] input.y:1.1-38: warning: %define variable 'api.pure' requires keyword values [-Wdeprecated] input.y:2.1-40: warning: %define variable 'api.push-pull' requires keyword values [-Wdeprecated] ]]) ]) AT_TEST(["], ["]) AT_TEST([{], [}]) m4_popdef([AT_TEST]) AT_CLEANUP ## ------------------------ ## ## %define enum variables. ## ## ------------------------ ## AT_SETUP([["%define" enum variables]]) # Check errors from the front-end, and the back-end. Since the # front-end quits before calling the back-end, these tests cannot be # fused. # Front-end. AT_DATA([[input.y]], [[%define lr.default-reduction bogus %% start: %empty; ]]) AT_BISON_CHECK([[-fcaret input.y]], [[1]], [[]], [[input.y:1.1-34: error: invalid value for %define variable 'lr.default-reduction': 'bogus' 1 | %define lr.default-reduction bogus | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:1.1-34: note: accepted value: 'most' input.y:1.1-34: note: accepted value: 'consistent' input.y:1.1-34: note: accepted value: 'accepting' ]]) # Check escapes. AT_DATA([[input.y]], [[%define lr.default-reduction {[$@]} %% start: %empty; ]]) AT_BISON_CHECK([[-fcaret input.y]], [[1]], [[]], [[input.y:1.1-35: warning: %define variable 'lr.default-reduction' requires keyword values [-Wdeprecated] 1 | %define lr.default-reduction {[$@]} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:1.1-35: error: invalid value for %define variable 'lr.default-reduction': '[$@]' 1 | %define lr.default-reduction {[$@]} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:1.1-35: note: accepted value: 'most' input.y:1.1-35: note: accepted value: 'consistent' input.y:1.1-35: note: accepted value: 'accepting' ]]) # Back-end. AT_DATA([[input.y]], [[%define api.push-pull neither %% start: %empty; ]]) AT_BISON_CHECK([[-fcaret input.y]], [[1]], [[]], [[input.y:1.1-29: error: invalid value for %define variable 'api.push-pull': 'neither' 1 | %define api.push-pull neither | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y:1.1-29: note: accepted value: 'pull' input.y:1.1-29: note: accepted value: 'push' input.y:1.1-29: note: accepted value: 'both' ]]) AT_CLEANUP ## ------------------------ ## ## %define file variables. ## ## ------------------------ ## AT_SETUP([["%define" file variables]]) AT_DATA([[input.y]], [[%skeleton "lalr1.cc" %locations %define api.location.file {bogus} %% start: %empty; ]]) AT_BISON_CHECK([[-fcaret input.y]], [[1]], [[]], [[input.y:3.1-33: error: %define variable 'api.location.file' requires 'none' or '"..."' values 3 | %define api.location.file {bogus} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ]]) AT_CLEANUP ## -------------------------------- ## ## %define backward compatibility. ## ## -------------------------------- ## AT_SETUP([["%define" backward compatibility]]) # The error messages tell us whether the variables are properly updated. AT_DATA([[input.y]], [[%define api.push_pull both %define lr.keep_unreachable_states maybe %define namespace "foo" %define variant %define parser_class_name {parser} %define filename_type {filename} %% start: %empty; ]]) AT_BISON_CHECK([[-fcaret input.y]], [1], [], [[input.y:1.1-26: warning: deprecated directive: '%define api.push_pull both', use '%define api.push-pull both' [-Wdeprecated] 1 | %define api.push_pull both | ^~~~~~~~~~~~~~~~~~~~~~~~~~ | %define api.push-pull both input.y:2.1-40: warning: deprecated directive: '%define lr.keep_unreachable_states maybe', use '%define lr.keep-unreachable-state maybe' [-Wdeprecated] 2 | %define lr.keep_unreachable_states maybe | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | %define lr.keep-unreachable-state maybe input.y:3.1-23: warning: deprecated directive: '%define namespace "foo"', use '%define api.namespace {foo}' [-Wdeprecated] 3 | %define namespace "foo" | ^~~~~~~~~~~~~~~~~~~~~~~ | %define api.namespace {foo} input.y:4.1-15: warning: deprecated directive: '%define variant', use '%define api.value.type variant' [-Wdeprecated] 4 | %define variant | ^~~~~~~~~~~~~~~ | %define api.value.type variant input.y:5.1-34: warning: deprecated directive: '%define parser_class_name {parser}', use '%define api.parser.class {parser}' [-Wdeprecated] 5 | %define parser_class_name {parser} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | %define api.parser.class {parser} input.y:6.1-32: warning: deprecated directive: '%define filename_type {filename}', use '%define api.filename.type {filename}' [-Wdeprecated] 6 | %define filename_type {filename} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | %define api.filename.type {filename} input.y:2.1-40: error: invalid value for %define Boolean variable 'lr.keep-unreachable-state' 2 | %define lr.keep_unreachable_states maybe | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ input.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_CLEANUP ## ------------------------- ## ## Unused %define api.pure. ## ## ------------------------- ## AT_SETUP([[Unused %define api.pure]]) # AT_TEST(DECLS, VALUE, LOCATION) # ------------------------------- # Make sure Bison reports that '%define api.pure VALUE' is unused when DECLS # are specified. m4_pushdef([AT_TEST], [ AT_DATA([[input.y]], [[%define api.pure ]$2[ ]$1[ %% start: %empty; ]]) AT_BISON_CHECK([[input.y]], [[1]], [], [[input.y:]$3[: error: %define variable 'api.pure' is not used ]]) ]) AT_TEST([[%language "c++"]], [[]], [[1.1-16]]) AT_TEST([[%language "c++"]], [[false]], [[1.1-22]]) AT_TEST([[%language "c++" %glr-parser]], [[""]], [[1.1-19]]) AT_TEST([[%language "c++" %glr-parser]], [[false]], [[1.1-22]]) AT_TEST([[%language "java"]], [[true]], [[1.1-21]]) AT_TEST([[%language "java"]], [[false]], [[1.1-22]]) m4_popdef([AT_TEST]) AT_CLEANUP ## -------------------------------- ## ## C++ namespace reference errors. ## ## -------------------------------- ## AT_SETUP([[C++ namespace reference errors]]) # AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...) # ------------------------------------------------------------- # Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL". m4_define([AT_CHECK_NAMESPACE_ERROR], [ AT_DATA([[input.y]], [[%language "C++" %header %define api.namespace {]$1[} %% start: %empty; ]]) AT_BISON_CHECK([[input.y]], [1], [], [m4_foreach([b4_arg], m4_dquote(m4_shift($@)), [b4_arg ])]) ]) AT_CHECK_NAMESPACE_ERROR([[]], [[input.y:3.1-24: error: namespace reference is empty]]) AT_CHECK_NAMESPACE_ERROR([[ @tb@@tb@ @tb@ @tb@]], [[input.y:3.1-57: error: namespace reference is empty]]) AT_CHECK_NAMESPACE_ERROR([[foo::::bar]], [[input.y:3.1-34: error: namespace reference has consecutive "::"]]) AT_CHECK_NAMESPACE_ERROR([[foo:: @tb@::bar]], [[input.y:3.1-38: error: namespace reference has consecutive "::"]]) AT_CHECK_NAMESPACE_ERROR([[::::bar]], [[input.y:3.1-31: error: namespace reference has consecutive "::"]]) AT_CHECK_NAMESPACE_ERROR([[:: ::bar]], [[input.y:3.1-32: error: namespace reference has consecutive "::"]]) AT_CHECK_NAMESPACE_ERROR([[foo::bar::@tb@::]], [[input.y:3.1-43: error: namespace reference has consecutive "::"]], [[input.y:3.1-43: error: namespace reference has a trailing "::"]]) AT_CHECK_NAMESPACE_ERROR([[foo::bar::]], [[input.y:3.1-34: error: namespace reference has a trailing "::"]]) AT_CHECK_NAMESPACE_ERROR([[foo::bar:: @tb@]], [[input.y:3.1-41: error: namespace reference has a trailing "::"]]) AT_CHECK_NAMESPACE_ERROR([[::]], [[input.y:3.1-26: error: namespace reference has a trailing "::"]]) AT_CLEANUP ## ------------------------ ## ## Bad character literals. ## ## ------------------------ ## # Bison used to accept character literals that were empty or contained # too many characters. AT_SETUP([[Bad character literals]]) AT_DATA_NO_FINAL_EOL([empty.y], [[%% start: ''; start: ' start: ']]) AT_BISON_CHECK([-fcaret empty.y], [1], [], [[empty.y:2.8-9: error: empty character literal 2 | start: ''; | ^~ empty.y:3.8-4.0: error: missing "'" at end of line 3 | start: ' | ^ empty.y:3.8-4.0: error: empty character literal 3 | start: ' | ^ empty.y:4.8: error: missing "'" at end of file 4 | start: ' | ^ empty.y:4.8: error: empty character literal 4 | start: ' | ^ ]]) AT_DATA_NO_FINAL_EOL([two.y], [[%% start: 'ab'; start: 'ab start: 'ab]]) AT_BISON_CHECK([two.y], [1], [], [[two.y:2.8-11: error: extra characters in character literal two.y:3.8-4.0: error: missing "'" at end of line two.y:3.8-4.0: error: extra characters in character literal two.y:4.8-10: error: missing "'" at end of file two.y:4.8-10: error: extra characters in character literal ]]) AT_DATA_NO_FINAL_EOL([three.y], [[%% start: 'abc'; start: 'abc start: 'abc]]) AT_BISON_CHECK([three.y], [1], [], [[three.y:2.8-12: error: extra characters in character literal three.y:3.8-4.0: error: missing "'" at end of line three.y:3.8-4.0: error: extra characters in character literal three.y:4.8-11: error: missing "'" at end of file three.y:4.8-11: error: extra characters in character literal ]]) AT_CLEANUP ## ------------------------- ## ## Bad escapes in literals. ## ## ------------------------- ## AT_SETUP([[Bad escapes in literals]]) AT_DATA([input.y], [[%% start: '\777' '\0' '\xfff' '\x0' '\uffff' '\u0000' '\Uffffffff' '\U00000000' '\ ' '\A'; ]]) # It is not easy to create special characters, we cannot even trust tr. # Beside we cannot even expect "echo '\0'" to output two characters # (well three with \n): at least Bash 3.2 converts the two-character # sequence "\0" into a single NUL character. AT_PERL_REQUIRE([[-e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y]]) AT_BISON_CHECK([input.y], [1], [], [[input.y:2.9-12: error: invalid number after \-escape: 777 input.y:2.16-17: error: invalid number after \-escape: 0 input.y:2.21-25: error: invalid number after \-escape: xfff input.y:2.29-31: error: invalid number after \-escape: x0 input.y:3.9-14: error: invalid number after \-escape: uffff input.y:3.18-23: error: invalid number after \-escape: u0000 input.y:3.27-36: error: invalid number after \-escape: Uffffffff input.y:3.40-49: error: invalid number after \-escape: U00000000 input.y:4.9-10: error: invalid character after \-escape: ' ' input.y:4.14-15: error: invalid character after \-escape: A input.y:5.9-16: error: invalid character after \-escape: \t input.y:5.17: error: invalid character after \-escape: \f input.y:5.18: error: invalid character after \-escape: \0 input.y:5.19: error: invalid character after \-escape: \001 ]]) AT_CLEANUP ## ------------------------ ## ## Unexpected end of file. ## ## ------------------------ ## AT_SETUP([[Unexpected end of file]]) AT_DATA([input.y], []) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:1.1: error: unexpected end of file ]]) AT_DATA_NO_FINAL_EOL([char.y], [[%token FOO ']]) AT_BISON_CHECK([-fcaret char.y], [1], [], [[char.y:1.12: error: missing "'" at end of file 1 | %token FOO ' | ^ char.y:1.12: error: empty character literal 1 | %token FOO ' | ^ ]]) AT_DATA_NO_FINAL_EOL([escape-in-char.y], [[%token FOO '\]]) AT_BISON_CHECK([-fcaret escape-in-char.y], [1], [], [[escape-in-char.y:1.12-13: error: missing '?\'' at end of file 1 | %token FOO '\ | ^~ escape-in-char.y:1.14: error: unexpected end of file 1 | %token FOO '\ | ^ ]]) AT_DATA_NO_FINAL_EOL([string.y], [[%token FOO "]]) AT_BISON_CHECK([-fcaret string.y], [1], [], [[string.y:1.12: error: missing '"' at end of file 1 | %token FOO " | ^ string.y:1.13: error: unexpected end of file 1 | %token FOO " | ^ ]]) AT_DATA_NO_FINAL_EOL([escape-in-string.y], [[%token FOO "\]]) AT_BISON_CHECK([-fcaret escape-in-string.y], [1], [], [[escape-in-string.y:1.12-13: error: missing '?"' at end of file 1 | %token FOO "\ | ^~ escape-in-string.y:1.14: error: unexpected end of file 1 | %token FOO "\ | ^ ]]) AT_DATA_NO_FINAL_EOL([tstring.y], [[%token FOO _("]]) AT_BISON_CHECK([-fcaret tstring.y], [1], [], [[tstring.y:1.12-14: error: missing '")' at end of file 1 | %token FOO _(" | ^~~ tstring.y:1.15: error: unexpected end of file 1 | %token FOO _(" | ^ ]]) AT_DATA_NO_FINAL_EOL([escape-in-tstring.y], [[%token FOO _("\]]) AT_BISON_CHECK([-fcaret escape-in-tstring.y], [1], [], [[escape-in-tstring.y:1.12-15: error: missing '?")' at end of file 1 | %token FOO _("\ | ^~~~ escape-in-tstring.y:1.16: error: unexpected end of file 1 | %token FOO _("\ | ^ ]]) AT_CLEANUP ## ------------------------- ## ## LAC: Errors for %define. ## ## ------------------------- ## AT_SETUP([[LAC: Errors for %define]]) AT_KEYWORDS([lac]) AT_DATA([[input.y]], [[%% start: %empty; ]]) # Only "full" and "none" are accepted for parse.lac # Unknown values (such as "unsupported") are rejected m4_foreach([b4_skel], [[yacc.c], [lalr1.cc], [lalr1.d], [lalr1.java]], [AT_BISON_CHECK([[-S]b4_skel[ -Dparse.lac=none input.y]]) AT_BISON_CHECK([[-S]b4_skel[ -Dparse.lac=full input.y]]) AT_BISON_CHECK([[-S]b4_skel[ -Dparse.lac=unsupported input.y]], [[1]], [], [[:4: error: invalid value for %define variable 'parse.lac': 'unsupported' :4: note: accepted value: 'full' :4: note: accepted value: 'none' ]]) ]) # parse.lac.* options are useless if LAC isn't actually activated. AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 -Dparse.lac.memory-trace=full input.y]], [[1]], [], [[:3: error: %define variable 'parse.lac.es-capacity-initial' is not used :4: error: %define variable 'parse.lac.memory-trace' is not used ]]) # parse.lac.* options are useless in C++/Java even if LAC is actually activated. m4_foreach([b4_skel], [[lalr1.cc], [lalr1.java]], [AT_BISON_CHECK([[-S]b4_skel[ -Dparse.lac=full -Dparse.lac.es-capacity-initial=1 -Dparse.lac.memory-trace=full input.y]], [[1]], [], [[:5: error: %define variable 'parse.lac.es-capacity-initial' is not used :6: error: %define variable 'parse.lac.memory-trace' is not used ]]) ]) AT_CLEANUP ## ---------------------- ## ## -Werror combinations. ## ## ---------------------- ## AT_SETUP([[-Werror combinations]]) AT_DATA([[input.y]], [[%% a: '0' { $$ = $; }; ]]) # -Werror is not enabled by -Wall or equivalent. AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]], [[input.y:2.15: warning: stray '$' [-Wother] ]]) AT_BISON_CHECK([[-W input.y]], [[0]], [[]], [[input.y:2.15: warning: stray '$' [-Wother] ]]) AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]], [[input.y:2.15: warning: stray '$' [-Wother] ]]) # -Werror is not disabled by -Wnone or equivalent. AT_BISON_CHECK([[-Werror,none,other input.y]], [[1]], [[]], [[input.y:2.15: error: stray '$' [-Werror=other] ]]) AT_BISON_CHECK([[-Werror,no-all,other input.y]], [[1]], [[]], [[input.y:2.15: error: stray '$' [-Werror=other] ]]) # Check that -Wno-error keeps warnings enabled, but non fatal. AT_BISON_CHECK([[-Werror -Wno-error=other input.y]], [[0]], [[]], [[input.y:2.15: warning: stray '$' [-Wother] ]]) AT_BISON_CHECK([[-Wno-error=other -Werror input.y]], [[0]], [[]], [[input.y:2.15: warning: stray '$' [-Wother] ]]) AT_BISON_CHECK([[-Werror=other -Wno-other input.y]], [[0]], [[]], [[]]) AT_CLEANUP ## ------------------------------------------------------ ## ## %name-prefix and %define api.prefix are incompatible. ## ## ------------------------------------------------------ ## AT_SETUP([[%name-prefix and api.prefix are incompatible]]) # AT_TEST(DIRECTIVES, OPTIONS, ERROR-LOCATION) # -------------------------------------------- m4_pushdef([AT_TEST], [AT_DATA([[input.y]], [[$1 %% exp: %empty; ]]) AT_BISON_CHECK([[$2 -Wno-deprecated input.y]], [[1]], [[]], [[$3: error: '%name-prefix' and '%define api.prefix' cannot be used together ]]) ]) AT_TEST([%define api.prefix {foo} %name-prefix "bar"], [], [input.y:1.1-24]) AT_TEST([], [-Dapi.prefix={foo} -p bar], [:3]) AT_TEST([%name-prefix "bar"], [-Dapi.prefix={foo}], [:3]) AT_TEST([%define api.prefix {foo}], [-p bar], [input.y:1.1-24]) m4_popdef([AT_TEST]) AT_CLEANUP ## ----------------------- ## ## Redefined %union name. ## ## ----------------------- ## AT_SETUP([[Redefined %union name]]) # AT_TEST(DIRECTIVES, EXIT-STATUS, ERROR) # --------------------------------------- m4_pushdef([AT_TEST], [AT_DATA([[input.y]], [$1 %% exp: %empty; ]) AT_BISON_CHECK([[input.y]], [$2], [[]], [$3]) ]) AT_TEST([[%union foo {}; %union {}; %union foo {}; %define api.value.union.name foo]], [0], [[input.y:3.8-10: warning: %define variable 'api.value.union.name' redefined [-Wother] input.y:1.8-10: note: previous definition input.y:4.1-32: warning: %define variable 'api.value.union.name' redefined [-Wother] input.y:3.8-10: note: previous definition input.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_TEST([[%define api.value.union.name {foo}]], [1], [[input.y:1.1-34: error: %define variable 'api.value.union.name' requires keyword values input.y:1.1-34: error: %define variable 'api.value.union.name' is not used ]]) AT_TEST([[%define api.value.union.name "foo"]], [1], [[input.y:1.1-34: error: %define variable 'api.value.union.name' requires keyword values input.y:1.1-34: error: %define variable 'api.value.union.name' is not used ]]) m4_popdef([AT_TEST]) AT_CLEANUP ## -------------- ## ## Stray $ or @. ## ## -------------- ## AT_SETUP([[Stray $ or @]]) AT_BISON_OPTION_PUSHDEFS # Give %printer and %destructor "<*> exp TOK" instead of "<*>" to # check that the warnings are reported once, not three times. AT_DATA_GRAMMAR([[input.y]], [[%type exp %token TOK TOK2 %destructor { $%; @%; } <*> exp TOK; %initial-action { $%; @%; }; %printer { $%; @%; } <*> exp TOK; %{ $ @ %} // Should not warn. %% exp: TOK { $%; @%; $$ = $1; } | 'a' { $<->1; $$ = 1; } | 'b' { $bar>$; } %% $ @ // Should not warn. ]]) AT_BISON_CHECK([[-Wall input.y]], 0, [], [[input.y:11.19: warning: stray '$' [-Wother] input.y:11.23: warning: stray '@' [-Wother] input.y:12.19: warning: stray '$' [-Wother] input.y:12.23: warning: stray '@' [-Wother] input.y:13.19: warning: stray '$' [-Wother] input.y:13.23: warning: stray '@' [-Wother] input.y:16.19: warning: stray '$' [-Wother] input.y:16.23: warning: stray '@' [-Wother] input.y:17.19: warning: stray '$' [-Wother] ]]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## ---------------- ## ## Code injection. ## ## ---------------- ## AT_SETUP([[Code injection]]) m4_pattern_allow([^m4_errprintn$]) # AT_TEST([MACRO]) # ---------------- # Try to have MACRO be run by bison. m4_pushdef([AT_TEST], [AT_DATA([[input.y]], [[%type <$1(%type)> exp %token <$1(%token)> a %token b %initial-action { $$; $<$1(%initial-action)>$ }; %printer { $$ $<$1(%printer)>$ } <> <*>; %lex-param { $1(%lex-param) }; %parse-param { $1(%parse-param) }; %% exp: a a[name] b { $$; $][1; $<$1(action 1)>$ $<$1(action 2)>1 $<$1(action 3)>name $<$1(action 4)>0 ; }; ]]) # Disable -Wother to avoid the warnings about the suspicious presence # of `b4_canary` in the output. AT_FOR_EACH_SKEL( [AT_BISON_CHECK([[-Wno-other -S ]b4_skel[ ]m4_bmatch(b4_skel, [.*\.\(d\|java\)$], [], [-d])[ input.y]]) ]) ]) AT_TEST([b4_canary]) AT_TEST([@:>@b4_canary]) m4_popdef([AT_TEST]) AT_CLEANUP ##----------------------- ## ## Deprecated directives. ## ## ---------------------- ## AT_SETUP([[Deprecated directives]]) AT_KEYWORDS([[deprec]]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([[input.y]], [[ %default_prec %error_verbose %expect_rr 0 %file-prefix = "foo" %file-prefix = "bar" %fixed-output_files %fixed_output-files %fixed-output-files %name-prefix= "foo" %no-default_prec %no_default-prec %no_lines %output = "output.c" %pure_parser %token_table %error-verbose %glr-parser %name-prefix "bar" %defines "header.h" %% exp : '0' ]]) AT_DATA([errors-all], [[input.y:10.1-13: warning: deprecated directive: '%default_prec', use '%default-prec' [-Wdeprecated] fix-it:"input.y":{10:1-10:14}:"%default-prec" input.y:11.1-14: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated] fix-it:"input.y":{11:1-11:15}:"%define parse.error verbose" input.y:12.1-10: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated] fix-it:"input.y":{12:1-12:11}:"%expect-rr" input.y:13.1-14: warning: deprecated directive: '%file-prefix =', use '%file-prefix' [-Wdeprecated] fix-it:"input.y":{13:1-13:15}:"%file-prefix" input.y:14.1-16.5: warning: duplicate directive: '%file-prefix\n =' [-Wother] input.y:13.1-20: note: previous declaration fix-it:"input.y":{14:1-16:6}:"" input.y:17.9-27: warning: deprecated directive: '%fixed-output_files', use '%output "y.tab.c"' [-Wdeprecated] fix-it:"input.y":{17:2-17:21}:"%output \"y.tab.c\"" input.y:18.9-27: warning: deprecated directive: '%fixed_output-files', use '%output "y.tab.c"' [-Wdeprecated] fix-it:"input.y":{18:9-18:28}:"%output \"y.tab.c\"" input.y:19.1-19: warning: deprecated directive: '%fixed-output-files', use '%output "y.tab.c"' [-Wdeprecated] fix-it:"input.y":{19:1-19:20}:"%output \"y.tab.c\"" input.y:20.1-19: warning: deprecated directive: '%name-prefix= "foo"', use '%define api.prefix {foo}' [-Wdeprecated] fix-it:"input.y":{20:1-20:20}:"%define api.prefix {foo}" input.y:21.1-16: warning: deprecated directive: '%no-default_prec', use '%no-default-prec' [-Wdeprecated] fix-it:"input.y":{21:1-21:17}:"%no-default-prec" input.y:22.1-16: warning: deprecated directive: '%no_default-prec', use '%no-default-prec' [-Wdeprecated] fix-it:"input.y":{22:1-22:17}:"%no-default-prec" input.y:23.1-9: warning: deprecated directive: '%no_lines', use '%no-lines' [-Wdeprecated] fix-it:"input.y":{23:1-23:10}:"%no-lines" input.y:24.1-9: warning: deprecated directive: '%output =', use '%output' [-Wdeprecated] fix-it:"input.y":{24:1-24:10}:"%output" input.y:25.1-12: warning: deprecated directive: '%pure_parser', use '%define api.pure' [-Wdeprecated] fix-it:"input.y":{25:1-25:13}:"%define api.pure" input.y:26.1-12: warning: deprecated directive: '%token_table', use '%token-table' [-Wdeprecated] fix-it:"input.y":{26:1-26:13}:"%token-table" input.y:27.1-14: warning: %define variable 'parse.error' redefined [-Wother] input.y:11.1-14: note: previous definition fix-it:"input.y":{27:1-27:15}:"" input.y:29.1-18: warning: duplicate directive: '%name-prefix "bar"' [-Wother] input.y:13.1-20: note: previous declaration fix-it:"input.y":{29:1-29:19}:"" input.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_CHECK([cp errors-all experr]) AT_BISON_CHECK([[-ffixit input.y]], [], [], [experr]) AT_CHECK([[sed -e '/^fix-it:/d' errors-all >experr]]) AT_BISON_CHECK([[input.y]], [], [], [experr]) # Update the input file. Make sure we generated nothing. AT_CHECK([rm -f output.c]) AT_CHECK([cp input.y input.y.orig]) AT_CHECK([sed -e '/fix-it/d' experr]) AT_CHECK([echo "bison: file 'input.y' was updated (backup: 'input.y~')" >>experr]) AT_BISON_CHECK([[--update input.y]], [], [[]], [experr]) # Check the backup. AT_CHECK([diff input.y.orig input.y~]) # Check we did not generate any file. AT_CHECK([test ! -f output.c]) # Check the update. AT_CHECK([sed -e '1,8d' input.y], [], [[ %default-prec %define parse.error verbose %expect-rr 0 %file-prefix "foo" %output "y.tab.c" %output "y.tab.c" %output "y.tab.c" %define api.prefix {foo} %no-default-prec %no-default-prec %no-lines %output "output.c" %define api.pure %token-table %glr-parser %defines "header.h" %% exp : '0' ]]) AT_BISON_CHECK([[input.y]]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## ---------------------------- ## ## Unput's effect on locations. ## ## ---------------------------- ## # When the scanner detects a deprecated construct, it unputs the # correct version, but it should *not* have any impact on the scanner # cursor. If it does, the locations of directives on the same line # become erroneous. AT_SETUP([[Unput's effect on locations]]) AT_KEYWORDS([[deprec]]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([[input.y]], [[ %glr-parser %expect_rr 42 %expect_rr 42 %expect_rr 42 %error_verbose %error_verbose %error_verbose %% exp: '0' ]]) AT_BISON_CHECK([[input.y]], [[1]], [[]], [[input.y:11.1-10: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated] input.y:11.15-24: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated] input.y:12.15-24: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated] input.y:13.1-14: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated] input.y:13.16-29: warning: %define variable 'parse.error' redefined [-Wother] input.y:13.1-14: note: previous definition input.y:14.16-29: warning: %define variable 'parse.error' redefined [-Wother] input.y:13.16-29: note: previous definition input.y: error: reduce/reduce conflicts: 0 found, 42 expected input.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## -------------------------- ## ## Non-deprecated directives. ## ## -------------------------- ## AT_SETUP([[Non-deprecated directives]]) AT_KEYWORDS([[deprec]]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([[input.y]], [[ %default-prec %define parse.error verbose %expect-rr 42 %file-prefix "foo" %file-prefix "bar" %no-default-prec %no-lines %output "foo" %token-table %% exp : '0' ]]) AT_BISON_CHECK([[input.y]], [[0]], [[]], [[input.y:14.1-15.5: warning: duplicate directive: '%file-prefix' [-Wother] input.y:13.1-18: note: previous declaration input.y: warning: %expect-rr applies only to GLR parsers [-Wother] input.y: warning: fix-its can be applied. Rerun with option '--update'. [-Wother] ]]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## -------------------- ## ## Cannot type action. ## ## -------------------- ## AT_SETUP([[Cannot type action]]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([[input.y]], [[%% exp: {} ]]) AT_BISON_CHECK([[-fcaret input.y]], [[0]], [[]], [[input.y:10.6-13: warning: only midrule actions can be typed: int [-Wother] 10 | exp: {} | ^~~~~~~~ ]]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## -------------------------------------- ## ## Character literals and api.token.raw. ## ## -------------------------------------- ## AT_SETUP([[Character literals and api.token.raw]]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([[input.y]], [[%define api.token.raw %token 'a' %% exp: 'b' "c" {} ]]) AT_BISON_CHECK([[-fcaret input.y]], [[1]], [[]], [[input.y:10.8-10: error: character literals cannot be used together with api.token.raw 10 | %token 'a' | ^~~ input.y:9.1-21: note: definition of api.token.raw 9 | %define api.token.raw | ^~~~~~~~~~~~~~~~~~~~~ input.y:12.6-8: error: character literals cannot be used together with api.token.raw 12 | exp: 'b' "c" {} | ^~~ input.y:9.1-21: note: definition of api.token.raw 9 | %define api.token.raw | ^~~~~~~~~~~~~~~~~~~~~ ]]) AT_BISON_OPTION_POPDEFS AT_CLEANUP ## ------------------------------ ## ## %token-table and parse.error. ## ## ------------------------------ ## AT_SETUP([[%token-table and parse.error]]) # AT_TEST(DIRECTIVES, ERROR-LOCATION) # ----------------------------------- m4_pushdef([AT_TEST], [AT_DATA([[input.y]], [[$1 %% exp: %empty; ]]) AT_BISON_CHECK([[input.y]], [[1]], [[]], [$2: error: '%token-table' and '%define parse.error (custom|detailed)' cannot be used together ]) ]) AT_TEST([%define parse.error custom %token-table], [[input.y:1.1-26]]) AT_TEST([%define parse.error detailed %token-table],[[input.y:1.1-28]]) m4_popdef([AT_TEST]) AT_CLEANUP ## --------------------------------------- ## ## Invalid file prefix mapping arguments. ## ## --------------------------------------- ## AT_SETUP([[Invalid file prefix mapping arguments]]) # AT_TEST(DIRECTIVES, OPTIONS, ERROR-LOCATION) # -------------------------------------------- m4_pushdef([AT_TEST], [AT_DATA([[input.y]], [[ %% exp: %empty; ]]) AT_BISON_CHECK([[$1 input.y]], [[1]], [[]], [[$3: error: invalid argument for '--file-prefix-map': $2 ]]) ]) AT_TEST([-M foo], [foo], [:4]) AT_TEST([--file-prefix-map foo], [foo], [:4]) AT_TEST([-M foo=bar -M baz], [baz], [:6]) AT_TEST([-M foo= -M baz], [baz], [:6]) m4_popdef([AT_TEST]) AT_CLEANUP ## --------------- ## ## -Dcex.timeout. ## ## --------------- ## AT_SETUP([[-Dcex.timeout]]) AT_KEYWORDS([cex]) # AT_TEST(OPTIONS) # ---------------- m4_pushdef([AT_TEST], [AT_DATA([[input.y]], [[ %% exp: %empty; ]]) AT_BISON_CHECK([[$1 input.y]], [[$2]], [[]], [m4_ifvaln([$3], [$3])]) ]) # It's ok to define the timeout even if we don't run -Wcex. AT_TEST([-Dcex.timeout=1], [0]) AT_TEST([-Dcex.timeout=1 -Wcex], [0]) AT_TEST([-Dcex.timeout=1.5 -Wcex], [0]) # No time at all. Not really wrong. AT_TEST([-Dcex.timeout=0 -Wcex], [0]) AT_TEST([-Dcex.timeout=foo -Wcex], [1], [[:3: error: invalid value for %define variable 'cex.timeout': 'foo']]) AT_TEST([-Dcex.timeout=-1.5 -Wcex], [1], [[:3: error: invalid value for %define variable 'cex.timeout': '-1.5']]) m4_popdef([AT_TEST]) AT_CLEANUP