X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/50cce58e9a046f6a98b66cf3907f2668d044df1c..ee616bdc62db15f2f9bdad42bdf8699d9c374c8c:/tests/regression.at?ds=inline diff --git a/tests/regression.at b/tests/regression.at index 6a37f759..f101f218 100644 --- a/tests/regression.at +++ b/tests/regression.at @@ -1,22 +1,19 @@ # Bison Regressions. -*- Autotest -*- -# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software -# Foundation, Inc. +# Copyright (C) 2001-2013 Free Software Foundation, Inc. -# This program is free software; you can redistribute it and/or modify +# 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 2, or (at your option) -# any later version. - +# 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, write to the Free Software -# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -# 02110-1301, USA. +# along with this program. If not, see . AT_BANNER([[Regression tests.]]) @@ -27,10 +24,11 @@ AT_BANNER([[Regression tests.]]) AT_SETUP([Trivial grammars]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([input.y], [[%{ -void yyerror (char const *); -int yylex (void); +]AT_YYERROR_DECLARE_EXTERN[ +]AT_YYLEX_DECLARE_EXTERN[ #define YYSTYPE int * %} @@ -40,29 +38,60 @@ int yylex (void); program: 'x'; ]]) +AT_BISON_OPTION_POPDEFS -AT_CHECK([bison -o input.c input.y]) -AT_COMPILE([input.o], [-c input.c]) +AT_BISON_CHECK([-o input.c input.y]) +AT_COMPILE([input.o]) AT_COMPILE([input.o], [-DYYDEBUG -c input.c]) AT_CLEANUP -## ------------------------- ## -## Early token definitions. ## -## ------------------------- ## +## ----------------- ## +## YYSTYPE typedef. ## +## ----------------- ## + +AT_SETUP([YYSTYPE typedef]) + +AT_BISON_OPTION_PUSHDEFS +AT_DATA_GRAMMAR([input.y], +[[%{ +]AT_YYERROR_DECLARE_EXTERN[ +]AT_YYLEX_DECLARE_EXTERN[ +typedef union { char const *val; } YYSTYPE; +%} + +%type program +%% + +program: { $$ = ""; }; +]]) +AT_BISON_OPTION_POPDEFS + +AT_BISON_CHECK([-o input.c input.y]) +AT_COMPILE([input.o]) + +AT_CLEANUP -AT_SETUP([Early token definitions]) + + +## ------------------------------------- ## +## Early token definitions with --yacc. ## +## ------------------------------------- ## + + +AT_SETUP([Early token definitions with --yacc]) # Found in GCJ: they expect the tokens to be defined before the user # prologue, so that they can use the token definitions in it. +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([input.y], [[%{ -void yyerror (const char *s); -int yylex (void); +]AT_YYERROR_DECLARE_EXTERN[ +]AT_YYLEX_DECLARE_EXTERN[ %} %union @@ -79,9 +108,55 @@ int yylex (void); exp: MY_TOKEN; %% ]]) +AT_BISON_OPTION_POPDEFS + +AT_BISON_CHECK([-y -o input.c input.y]) +AT_COMPILE([input.o]) + +AT_CLEANUP + + + +## ---------------------------------------- ## +## Early token definitions without --yacc. ## +## ---------------------------------------- ## + + +AT_SETUP([Early token definitions without --yacc]) + +# Found in GCJ: they expect the tokens to be defined before the user +# prologue, so that they can use the token definitions in it. + +AT_BISON_OPTION_PUSHDEFS +AT_DATA_GRAMMAR([input.y], +[[%{ +]AT_YYERROR_DECLARE_EXTERN[ +]AT_YYLEX_DECLARE_EXTERN[ +void print_my_token (void); +%} + +%union +{ + int val; +}; +%{ +#include +void +print_my_token (void) +{ + enum yytokentype my_token = MY_TOKEN; + printf ("%d\n", my_token); +} +%} +%token MY_TOKEN +%% +exp: MY_TOKEN; +%% +]]) +AT_BISON_OPTION_POPDEFS -AT_CHECK([bison -o input.c input.y]) -AT_COMPILE([input.o], [-c input.c]) +AT_BISON_CHECK([-o input.c input.y]) +AT_COMPILE([input.o]) AT_CLEANUP @@ -94,15 +169,17 @@ AT_CLEANUP AT_SETUP([Braces parsing]) +AT_BISON_OPTION_PUSHDEFS AT_DATA([input.y], -[[/* Bison used to swallow the character after `}'. */ +[[/* Bison used to swallow the character after '}'. */ %% exp: { tests = {{{{{{{{{{}}}}}}}}}}; }; %% ]]) +AT_BISON_OPTION_POPDEFS -AT_CHECK([bison -v -o input.c input.y]) +AT_BISON_CHECK([-v -o input.c input.y]) AT_CHECK([grep 'tests = {{{{{{{{{{}}}}}}}}}};' input.c], 0, [ignore]) @@ -116,8 +193,9 @@ AT_CLEANUP 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 +[[/* 'Bison -v' used to dump core when two tokens are defined with the same string, as LE and GE below. */ %token NUM @@ -128,9 +206,10 @@ AT_DATA([input.y], exp: '(' exp ')' | NUM ; %% ]]) +AT_BISON_OPTION_POPDEFS -AT_CHECK([bison -v -o input.c input.y], 0, [], -[[input.y:6.8-14: warning: symbol `"<="' used more than once as a literal string +AT_BISON_CHECK([-v -o input.c input.y], 0, [], +[[input.y:6.8-14: warning: symbol "<=" used more than once as a literal string [-Wother] ]]) AT_CLEANUP @@ -144,6 +223,7 @@ AT_SETUP([Rule Line Numbers]) AT_KEYWORDS([report]) +AT_BISON_OPTION_PUSHDEFS AT_DATA([input.y], [[%% expr: @@ -173,8 +253,9 @@ expr: }; ]]) +AT_BISON_OPTION_POPDEFS -AT_CHECK([bison -o input.c -v input.y]) +AT_BISON_CHECK([-o input.c -v input.y]) # Check the contents of the report. AT_CHECK([cat input.output], [], @@ -182,13 +263,13 @@ AT_CHECK([cat input.output], [], 0 $accept: expr $end - 1 @1: /* empty */ + 1 $@1: %empty - 2 expr: 'a' @1 'b' + 2 expr: 'a' $@1 'b' - 3 @2: /* empty */ + 3 $@2: %empty - 4 expr: @2 'c' + 4 expr: $@2 'c' Terminals, with rules where they appear @@ -206,71 +287,71 @@ $accept (6) on left: 0 expr (7) on left: 2 4, on right: 0 -@1 (8) +$@1 (8) on left: 1, on right: 2 -@2 (9) +$@2 (9) on left: 3, on right: 4 -state 0 +State 0 0 $accept: . expr $end 'a' shift, and go to state 1 - $default reduce using rule 3 (@2) + $default reduce using rule 3 ($@2) expr go to state 2 - @2 go to state 3 + $@2 go to state 3 -state 1 +State 1 - 2 expr: 'a' . @1 'b' + 2 expr: 'a' . $@1 'b' - $default reduce using rule 1 (@1) + $default reduce using rule 1 ($@1) - @1 go to state 4 + $@1 go to state 4 -state 2 +State 2 0 $accept: expr . $end $end shift, and go to state 5 -state 3 +State 3 - 4 expr: @2 . 'c' + 4 expr: $@2 . 'c' 'c' shift, and go to state 6 -state 4 +State 4 - 2 expr: 'a' @1 . 'b' + 2 expr: 'a' $@1 . 'b' 'b' shift, and go to state 7 -state 5 +State 5 0 $accept: expr $end . $default accept -state 6 +State 6 - 4 expr: @2 'c' . + 4 expr: $@2 'c' . $default reduce using rule 4 (expr) -state 7 +State 7 - 2 expr: 'a' @1 'b' . + 2 expr: 'a' $@1 'b' . $default reduce using rule 2 (expr) ]]) @@ -292,11 +373,14 @@ AT_DATA([input.y], %token LE 134 "<=" %left OR "<=" %% -exp: ; +exp: %empty; %% ]]) -AT_CHECK([bison -v -o input.c input.y]) +AT_BISON_CHECK([-v -Wall -o input.c input.y], 0, [], +[[input.y:1.29-32: warning: useless precedence and associativity for "||" [-Wprecedence] +input.y:2.29-32: warning: useless precedence and associativity for "<=" [-Wprecedence] +]]) AT_CLEANUP @@ -319,15 +403,16 @@ default: 'a' } %{ ]]) -AT_CHECK([bison input.y], [1], [], -[[input.y:2.1: invalid character: `?' -input.y:3.14: invalid character: `}' -input.y:4.1: invalid character: `%' -input.y:4.2: invalid character: `&' -input.y:5.1-17: invalid directive: `%a-does-not-exist' -input.y:6.1: invalid character: `%' -input.y:6.2: invalid character: `-' -input.y:7.1-8.0: missing `%}' at end of file +AT_BISON_CHECK([input.y], [1], [], +[[input.y:2.1: error: invalid character: '?' +input.y:3.14: error: invalid character: '}' +input.y:4.1: error: invalid character: '%' +input.y:4.2: error: invalid character: '&' +input.y:5.1-17: error: invalid directive: '%a-does-not-exist' +input.y:6.1: error: invalid character: '%' +input.y:6.2: error: invalid character: '-' +input.y:7.1-8.0: error: missing '%}' at end of file +input.y:7.1-8.0: error: syntax error, unexpected %{...%} ]]) AT_CLEANUP @@ -345,10 +430,8 @@ AT_DATA([input.y], %union ]]) -AT_CHECK([bison input.y], [1], [], -[[input.y:3.1: missing `{' in "%destructor {...}" -input.y:4.1: missing `{' in "%initial-action {...}" -input.y:4.1: syntax error, unexpected %initial-action {...}, expecting string or identifier +AT_BISON_CHECK([input.y], [1], [], +[[input.y:3.1-15: error: syntax error, unexpected %initial-action, expecting {...} ]]) AT_CLEANUP @@ -362,12 +445,12 @@ AT_CLEANUP AT_SETUP([Token definitions]) -# Bison managed, when fed with `%token 'f' "f"' to #define 'f'! +AT_BISON_OPTION_PUSHDEFS +# Bison managed, when fed with '%token 'f' "f"' to #define 'f'! AT_DATA_GRAMMAR([input.y], [%{ -#include -void yyerror (const char *s); -int yylex (void); +]AT_YYERROR_DECLARE[ +]AT_YYLEX_DECLARE[ %} [%error-verbose %token MYEOF 0 "end of file" @@ -376,32 +459,40 @@ int yylex (void); %token C_TOKEN 'c' %token 'd' D_TOKEN %token SPECIAL "\\\'\?\"\a\b\f\n\r\t\v\001\201\x001\x000081??!" +%token SPECIAL "\\\'\?\"\a\b\f\n\r\t\v\001\201\x001\x000081??!" %% exp: "a" "\\\'\?\"\a\b\f\n\r\t\v\001\201\x001\x000081??!"; %% -void -yyerror (char const *s) -{ - fprintf (stderr, "%s\n", s); -} - -int -yylex (void) -{ - return SPECIAL; -} - -int -main (void) -{ - return yyparse (); -} +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE([{ SPECIAL }])[ +]AT_MAIN_DEFINE[ ]]) +AT_BISON_OPTION_POPDEFS -AT_CHECK([bison -o input.c input.y]) +# Checking the warning message guarantees that the trigraph "??!" isn't +# unnecessarily escaped here even though it would need to be if encoded in a +# C-string literal. Also notice that unnecessary escaping, such as "\?", from +# the user specification is eliminated. +AT_BISON_CHECK([-o input.c input.y], [[0]], [[]], +[[input.y:22.8-14: warning: symbol SPECIAL redeclared [-Wother] +input.y:22.8-63: warning: symbol "\\'?\"\a\b\f\n\r\t\v\001\201\001\201??!" used more than once as a literal string [-Wother] +]]) +AT_BISON_CHECK([-fcaret -o input.c input.y], [[0]], [[]], +[[input.y:22.8-14: warning: symbol SPECIAL redeclared [-Wother] + %token SPECIAL "\\\'\?\"\a\b\f\n\r\t\v\001\201\x001\x000081??!" + ^^^^^^^ +input.y:22.8-63: warning: symbol "\\'?\"\a\b\f\n\r\t\v\001\201\001\201??!" used more than once as a literal string [-Wother] + %token SPECIAL "\\\'\?\"\a\b\f\n\r\t\v\001\201\x001\x000081??!" + ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +]]) AT_COMPILE([input]) + +# Checking the error message here guarantees that yytname, which does contain +# C-string literals, does have the trigraph escaped correctly. Thus, the +# symbol name reported by the parser is exactly the same as that reported by +# Bison itself. AT_DATA([experr], -[[syntax error, unexpected "\\'?\"\a\b\f\n\r\t\v\001\201\001\201?\?!", expecting a +[[syntax error, unexpected "\\'?\"\a\b\f\n\r\t\v\001\201\001\201??!", expecting a ]]) AT_PARSER_CHECK([./input], 1, [], [experr]) AT_CLEANUP @@ -415,22 +506,24 @@ AT_CLEANUP AT_SETUP([Characters Escapes]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([input.y], [%{ -void yyerror (const char *s); -int yylex (void); +]AT_YYERROR_DECLARE_EXTERN[ +]AT_YYLEX_DECLARE_EXTERN[ %} [%% exp: '\'' "\'" | '\"' "\"" -| '"' "'" +| '"' "'" /* Pacify font-lock-mode: ". */ ; ]]) -# Pacify font-lock-mode: " -AT_CHECK([bison -o input.c input.y]) -AT_COMPILE([input.o], [-c input.c]) +AT_BISON_OPTION_POPDEFS + +AT_BISON_CHECK([-o input.c input.y]) +AT_COMPILE([input.o]) AT_CLEANUP @@ -441,7 +534,7 @@ AT_CLEANUP # The generation of the reduction was once wrong in Bison, and made it # miss some reductions. In the following test case, the reduction on -# `undef_id_tok' in state 1 was missing. This is stripped down from +# 'undef_id_tok' in state 1 was missing. This is stripped down from # the actual web2c.y. AT_SETUP([Web2c Report]) @@ -449,7 +542,7 @@ AT_SETUP([Web2c Report]) AT_KEYWORDS([report]) AT_DATA([input.y], -[[%token undef_id_tok const_id_tok +[[%token undef_id_tok const_id_tok %start CONST_DEC_PART @@ -459,17 +552,17 @@ CONST_DEC_PART: ; CONST_DEC_LIST: - CONST_DEC + CONST_DEC | CONST_DEC_LIST CONST_DEC ; CONST_DEC: - { } undef_id_tok '=' const_id_tok ';' + { } undef_id_tok '=' const_id_tok ';' ; %% ]]) -AT_CHECK([bison -v input.y]) +AT_BISON_CHECK([-v input.y]) AT_CHECK([cat input.output], 0, [[Grammar @@ -480,9 +573,9 @@ AT_CHECK([cat input.output], 0, 2 CONST_DEC_LIST: CONST_DEC 3 | CONST_DEC_LIST CONST_DEC - 4 @1: /* empty */ + 4 $@1: %empty - 5 CONST_DEC: @1 undef_id_tok '=' const_id_tok ';' + 5 CONST_DEC: $@1 undef_id_tok '=' const_id_tok ';' Terminals, with rules where they appear @@ -505,93 +598,93 @@ CONST_DEC_LIST (9) on left: 2 3, on right: 1 3 CONST_DEC (10) on left: 5, on right: 2 3 -@1 (11) +$@1 (11) on left: 4, on right: 5 -state 0 +State 0 0 $accept: . CONST_DEC_PART $end - $default reduce using rule 4 (@1) + $default reduce using rule 4 ($@1) CONST_DEC_PART go to state 1 CONST_DEC_LIST go to state 2 CONST_DEC go to state 3 - @1 go to state 4 + $@1 go to state 4 -state 1 +State 1 0 $accept: CONST_DEC_PART . $end $end shift, and go to state 5 -state 2 +State 2 1 CONST_DEC_PART: CONST_DEC_LIST . 3 CONST_DEC_LIST: CONST_DEC_LIST . CONST_DEC - undef_id_tok reduce using rule 4 (@1) + undef_id_tok reduce using rule 4 ($@1) $default reduce using rule 1 (CONST_DEC_PART) CONST_DEC go to state 6 - @1 go to state 4 + $@1 go to state 4 -state 3 +State 3 2 CONST_DEC_LIST: CONST_DEC . $default reduce using rule 2 (CONST_DEC_LIST) -state 4 +State 4 - 5 CONST_DEC: @1 . undef_id_tok '=' const_id_tok ';' + 5 CONST_DEC: $@1 . undef_id_tok '=' const_id_tok ';' undef_id_tok shift, and go to state 7 -state 5 +State 5 0 $accept: CONST_DEC_PART $end . $default accept -state 6 +State 6 3 CONST_DEC_LIST: CONST_DEC_LIST CONST_DEC . $default reduce using rule 3 (CONST_DEC_LIST) -state 7 +State 7 - 5 CONST_DEC: @1 undef_id_tok . '=' const_id_tok ';' + 5 CONST_DEC: $@1 undef_id_tok . '=' const_id_tok ';' '=' shift, and go to state 8 -state 8 +State 8 - 5 CONST_DEC: @1 undef_id_tok '=' . const_id_tok ';' + 5 CONST_DEC: $@1 undef_id_tok '=' . const_id_tok ';' const_id_tok shift, and go to state 9 -state 9 +State 9 - 5 CONST_DEC: @1 undef_id_tok '=' const_id_tok . ';' + 5 CONST_DEC: $@1 undef_id_tok '=' const_id_tok . ';' ';' shift, and go to state 10 -state 10 +State 10 - 5 CONST_DEC: @1 undef_id_tok '=' const_id_tok ';' . + 5 CONST_DEC: $@1 undef_id_tok '=' const_id_tok ';' . $default reduce using rule 5 (CONST_DEC) ]]) @@ -603,7 +696,7 @@ AT_CLEANUP ## Web2c Actions. ## ## --------------- ## -# The generation of the mapping `state -> action' was once wrong in +# The generation of the mapping 'state -> action' was once wrong in # extremely specific situations. web2c.y exhibits this situation. # Below is a stripped version of the grammar. It looks like one can # simplify it further, but just don't: it is tuned to exhibit a bug, @@ -628,16 +721,15 @@ AT_KEYWORDS([report]) AT_DATA([input.y], [[%% statement: struct_stat; -struct_stat: /* empty. */ | if else; +struct_stat: %empty | if else; if: "if" "const" "then" statement; else: "else" statement; %% ]]) -AT_CHECK([bison -v -o input.c input.y]) +AT_BISON_CHECK([-v -o input.c input.y]) -# Check only the tables. We don't use --no-parser, because it is -# still to be implemented in the experimental branch of Bison. +# Check only the tables. [sed -n 's/ *$//;/^static const.*\[\] =/,/^}/p' input.c >tables.c] AT_CHECK([[cat tables.c]], 0, @@ -671,15 +763,6 @@ AT_CHECK([[cat tables.c]], 0, 2, 2, 2, 2, 2, 2, 1, 2, 3, 4, 5, 6 }; -static const yytype_uint8 yyprhs[] = -{ - 0, 0, 3, 5, 6, 9, 14 -}; -static const yytype_int8 yyrhs[] = -{ - 8, 0, -1, 9, -1, -1, 10, 11, -1, 3, - 4, 5, 8, -1, 6, 8, -1 -}; static const yytype_uint8 yyrline[] = { 0, 2, 2, 3, 3, 4, 5 @@ -687,38 +770,30 @@ static const yytype_uint8 yyrline[] = static const char *const yytname[] = { "$end", "error", "$undefined", "\"if\"", "\"const\"", "\"then\"", - "\"else\"", "$accept", "statement", "struct_stat", "if", "else", 0 + "\"else\"", "$accept", "statement", "struct_stat", "if", "else", YY_NULL }; static const yytype_uint16 yytoknum[] = { 0, 256, 257, 258, 259, 260, 261 }; -static const yytype_uint8 yyr1[] = -{ - 0, 7, 8, 9, 9, 10, 11 -}; -static const yytype_uint8 yyr2[] = +static const yytype_int8 yypact[] = { - 0, 2, 1, 0, 2, 4, 2 + -2, -1, 4, -8, 0, 2, -8, -2, -8, -2, + -8, -8 }; static const yytype_uint8 yydefact[] = { 3, 0, 0, 2, 0, 0, 1, 3, 4, 3, 6, 5 }; -static const yytype_int8 yydefgoto[] = -{ - -1, 2, 3, 4, 8 -}; -static const yytype_int8 yypact[] = -{ - -2, -1, 4, -8, 0, 2, -8, -2, -8, -2, - -8, -8 -}; static const yytype_int8 yypgoto[] = { -8, -7, -8, -8, -8 }; +static const yytype_int8 yydefgoto[] = +{ + -1, 2, 3, 4, 8 +}; static const yytype_uint8 yytable[] = { 10, 1, 11, 5, 6, 0, 7, 9 @@ -732,6 +807,14 @@ static const yytype_uint8 yystos[] = 0, 3, 8, 9, 10, 4, 0, 6, 11, 5, 8, 8 }; +static const yytype_uint8 yyr1[] = +{ + 0, 7, 8, 9, 9, 10, 11 +}; +static const yytype_uint8 yyr2[] = +{ + 0, 2, 1, 0, 2, 4, 2 +}; ]]) AT_CLEANUP @@ -750,15 +833,13 @@ AT_CLEANUP # so that possible bound checking compilers could check all the skeletons. m4_define([_AT_DATA_DANCER_Y], [AT_DATA_GRAMMAR([dancer.y], -[%{ -static int yylex (AT_LALR1_CC_IF([int *], [void])); -AT_LALR1_CC_IF([], -[#include -static void yyerror (const char *);]) -%} +[[%code provides +{ + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ +} $1 %token ARROW INVALID NUMBER STRING DATA -%defines %verbose %error-verbose /* Grammar follows */ @@ -788,7 +869,7 @@ type: DATA | INVALID ; -body: /* empty */ +body: %empty | body member ; @@ -800,46 +881,10 @@ member: STRING | INVALID ; %% -AT_LALR1_CC_IF( -[/* A C++ error reporting function. */ -void -yy::parser::error (const location&, const std::string& m) -{ - std::cerr << m << std::endl; -} - -int -yyparse () -{ - yy::parser parser; - parser.set_debug_level (!!YYDEBUG); - return parser.parse (); -} -], -[static void -yyerror (const char *s) -{ - fprintf (stderr, "%s\n", s); -}]) - -static int -yylex (AT_LALR1_CC_IF([int *lval], [void])) -[{ - static int toknum = 0; - static int tokens[] = - { - ':', -1 - }; - ]AT_LALR1_CC_IF([*lval = 0; /* Pacify GCC. */])[ - return tokens[toknum++]; -}] - -int -main (void) -{ - return yyparse (); -} -]) +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE([":"])[ +]AT_MAIN_DEFINE[ +]]) ])# _AT_DATA_DANCER_Y @@ -850,12 +895,7 @@ m4_define([AT_CHECK_DANCER], [AT_SETUP([Dancer $1]) AT_BISON_OPTION_PUSHDEFS([$1]) _AT_DATA_DANCER_Y([$1]) -AT_CHECK([bison -o dancer.c dancer.y]) -AT_LALR1_CC_IF( - [AT_CHECK([bison -o dancer.cc dancer.y]) - AT_COMPILE_CXX([dancer])], - [AT_CHECK([bison -o dancer.c dancer.y]) - AT_COMPILE([dancer])]) +AT_FULL_COMPILE([dancer]) AT_PARSER_CHECK([./dancer], 1, [], [syntax error, unexpected ':' ]) @@ -879,18 +919,17 @@ m4_define([_AT_DATA_EXPECT2_Y], [AT_DATA_GRAMMAR([expect2.y], [%{ static int yylex (AT_LALR1_CC_IF([int *], [void])); -AT_LALR1_CC_IF([], -[#include -static void yyerror (const char *);]) +AT_LALR1_CC_IF([[#include ]], +[[ +]AT_YYERROR_DECLARE])[ %} $1 -%defines %error-verbose %token A 1000 %token B %% -program: /* empty */ +program: %empty | program e ';' | program error ';'; @@ -898,61 +937,42 @@ e: e '+' t | t; t: A | B; %% -AT_LALR1_CC_IF( -[/* A C++ error reporting function. */ -void -yy::parser::error (const location&, const std::string& m) -{ - std::cerr << m << std::endl; -} - -int +]AT_YYERROR_DEFINE[ +]AT_LALR1_CC_IF( +[int yyparse () { yy::parser parser; return parser.parse (); } -], -[static void -yyerror (const char *s) -{ - fprintf (stderr, "%s\n", s); -}]) +])[ +#include static int -yylex (AT_LALR1_CC_IF([int *lval], [void])) -[{ - static int toknum = 0; - static int tokens[] = +yylex (]AT_LALR1_CC_IF([int *lval], [void])[) +{ + static int const tokens[] = { 1000, '+', '+', -1 }; + static size_t toknum; ]AT_LALR1_CC_IF([*lval = 0; /* Pacify GCC. */])[ + assert (toknum < sizeof tokens / sizeof *tokens); return tokens[toknum++]; -}] - -int -main (void) -{ - return yyparse (); } -]) +]AT_MAIN_DEFINE[ +]]) ])# _AT_DATA_EXPECT2_Y # AT_CHECK_EXPECT2(BISON-OPTIONS) -# ------------------------------ +# ------------------------------- # Generate the grammar, compile it, run it. m4_define([AT_CHECK_EXPECT2], [AT_SETUP([Expecting two tokens $1]) AT_BISON_OPTION_PUSHDEFS([$1]) _AT_DATA_EXPECT2_Y([$1]) -AT_CHECK([bison -o expect2.c expect2.y]) -AT_LALR1_CC_IF( - [AT_CHECK([bison -o expect2.cc expect2.y]) - AT_COMPILE_CXX([expect2])], - [AT_CHECK([bison -o expect2.c expect2.y]) - AT_COMPILE([expect2])]) +AT_FULL_COMPILE([expect2]) AT_PARSER_CHECK([./expect2], 1, [], [syntax error, unexpected '+', expecting A or B ]) @@ -963,3 +983,646 @@ AT_CLEANUP AT_CHECK_EXPECT2() AT_CHECK_EXPECT2([%glr-parser]) AT_CHECK_EXPECT2([%skeleton "lalr1.cc"]) + + + +## --------------------------------------------- ## +## Braced code in declaration in rules section. ## +## --------------------------------------------- ## + +AT_SETUP([Braced code in declaration in rules section]) + +# Bison once mistook braced code in a declaration in the rules section to be a +# rule action. +AT_BISON_OPTION_PUSHDEFS([%debug]) +AT_DATA_GRAMMAR([input.y], +[[%{ +]AT_YYERROR_DECLARE[ +]AT_YYLEX_DECLARE[ +%} +%debug +%error-verbose +%% + +start: + { + printf ("Bison would once convert this action to a midrule because of the" + " subsequent braced code.\n"); + } + ; + +%destructor { fprintf (stderr, "DESTRUCTOR\n"); } 'a'; +%printer { fprintf (yyoutput, "PRINTER"); } 'a'; + +%% +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE(["a"])[ +]AT_MAIN_DEFINE[ +]]) +AT_BISON_OPTION_POPDEFS + +AT_BISON_CHECK([-o input.c input.y]) +AT_COMPILE([input]) +AT_PARSER_CHECK([./input --debug], 1, +[[Bison would once convert this action to a midrule because of the subsequent braced code. +]], +[[Starting parse +Entering state 0 +Reducing stack by rule 1 (line 20): +-> $$ = nterm start () +Stack now 0 +Entering state 1 +Reading a token: Next token is token 'a' (PRINTER) +syntax error, unexpected 'a', expecting $end +Error: popping nterm start () +Stack now 0 +Cleanup: discarding lookahead token 'a' (PRINTER) +DESTRUCTOR +Stack now 0 +]]) + +AT_CLEANUP + + + +## --------------------------------- ## +## String alias declared after use. ## +## --------------------------------- ## + +AT_SETUP([String alias declared after use]) + +# Bison once incorrectly asserted that the symbol number for either a token or +# its alias was the highest symbol number so far at the point of the alias +# declaration. That was true unless the declaration appeared after their first +# uses and other tokens appeared in between. + +AT_DATA([input.y], +[[%% +start: 'a' "A" 'b'; +%token 'a' "A"; +]]) + +AT_BISON_CHECK([-o input.c input.y]) + +AT_CLEANUP + + + +## -------------------------------- ## +## Extra lookahead sets in report. ## +## -------------------------------- ## + +AT_SETUP([[Extra lookahead sets in report]]) + +# Bison prints each reduction's lookahead set only next to the associated +# state's one item that (1) is associated with the same rule as the reduction +# and (2) has its dot at the end of its RHS. Previously, Bison also +# erroneously printed the lookahead set next to all of the state's other items +# associated with the same rule. This bug affected only the '.output' file and +# not the generated parser source code. + +AT_DATA([[input.y]], +[[%% +start: a | 'a' a 'a' ; +a: 'a' ; +]]) + +AT_BISON_CHECK([[--report=all input.y]]) +AT_CHECK([[sed -n '/^State 1$/,/^State 2$/p' input.output]], [[0]], +[[State 1 + + 2 start: 'a' . a 'a' + 3 a: . 'a' + 3 | 'a' . [$end] + + 'a' shift, and go to state 4 + + $default reduce using rule 3 (a) + + a go to state 5 + + +State 2 +]]) + +AT_CLEANUP + + + +## ---------------------------------------- ## +## Token number in precedence declaration. ## +## ---------------------------------------- ## + +AT_SETUP([[Token number in precedence declaration]]) + +# POSIX says token numbers can be declared in %left, %right, and %nonassoc, but +# we lost this in Bison 1.50. +AT_BISON_OPTION_PUSHDEFS +AT_DATA_GRAMMAR([input.y], +[[%code { + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ +} + +%error-verbose +%right END 0 +%left TK1 1 TK2 2 "tok alias" 3 + +%% + +start: + TK1 sr_conflict "tok alias" + | start %prec END + ; +sr_conflict: + TK2 + | TK2 "tok alias" + ; + +%% + +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE([{ 1, 2, 3, 0 }])[ +]AT_MAIN_DEFINE[ +]]) +AT_BISON_OPTION_POPDEFS + +AT_BISON_CHECK([[-Wall -o input.c input.y]], [[0]],, +[[input.y:24.5-19: warning: rule useless in parser due to conflicts [-Wother] +input.y:28.5-19: warning: rule useless in parser due to conflicts [-Wother] +input.y:18.7-9: warning: useless precedence and associativity for TK1 [-Wprecedence] +]]) +AT_COMPILE([[input]]) +AT_PARSER_CHECK([[./input]]) + +AT_CLEANUP + + + +## --------------------------- ## +## parse-gram.y: LALR = IELR. ## +## --------------------------- ## + +# If parse-gram.y's LALR and IELR parser tables ever begin to differ, we +# need to fix parse-gram.y or start using IELR. + +AT_SETUP([[parse-gram.y: LALR = IELR]]) + +# Avoid tests/bison's dark magic by processing a local copy of the +# grammar. Avoid differences in synclines by telling bison that the +# output files have the same name. +[cp $abs_top_srcdir/src/parse-gram.y input.y] +AT_BISON_CHECK([[-o input.c -Dlr.type=lalr input.y]]) +[mv input.c lalr.c] +AT_CAPTURE_FILE([lalr.c]) +AT_BISON_CHECK([[-o input.c -Dlr.type=ielr input.y]]) +[mv input.c ielr.c] +AT_CAPTURE_FILE([ielr.c]) +AT_CHECK([[diff lalr.c ielr.c]], [[0]]) + +AT_CLEANUP + + + +## -------------------------------------------- ## +## parse.error=verbose and YYSTACK_USE_ALLOCA. ## +## -------------------------------------------- ## + +AT_SETUP([[parse.error=verbose and YYSTACK_USE_ALLOCA]]) + +AT_BISON_OPTION_PUSHDEFS +AT_DATA_GRAMMAR([input.y], +[[%code { + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ + #define YYSTACK_USE_ALLOCA 1 +} + +%define parse.error verbose + +%% + +start: check syntax_error syntax_error ; + +check: +{ + if (128 < sizeof yymsgbuf) + { + fprintf (stderr, + "The initial size of yymsgbuf in yyparse has increased\n" + "since this test group was last updated. As a result,\n" + "this test group may no longer manage to induce a\n" + "reallocation of the syntax error message buffer.\n" + "This test group must be adjusted to produce a longer\n" + "error message.\n"); + YYABORT; + } +} +; + +// Induce a syntax error message whose total length is more than +// sizeof yymsgbuf in yyparse. Each token here is 64 bytes. +syntax_error: + "123456789112345678921234567893123456789412345678951234567896123A" +| "123456789112345678921234567893123456789412345678951234567896123B" +| error 'a' 'b' 'c' +; + +%% + +]AT_YYERROR_DEFINE[ + /* Induce two syntax error messages (which requires full error + recovery by shifting 3 tokens) in order to detect any loss of the + reallocated buffer. */ +]AT_YYLEX_DEFINE(["abc"])[ +]AT_MAIN_DEFINE[ +]]) +AT_BISON_OPTION_POPDEFS + +AT_BISON_CHECK([[-o input.c input.y]]) +AT_COMPILE([[input]]) +AT_PARSER_CHECK([[./input]], [[1]], [], +[[syntax error, unexpected 'a', expecting 123456789112345678921234567893123456789412345678951234567896123A or 123456789112345678921234567893123456789412345678951234567896123B +syntax error, unexpected $end, expecting 123456789112345678921234567893123456789412345678951234567896123A or 123456789112345678921234567893123456789412345678951234567896123B +]]) + +AT_CLEANUP + + + +## ------------------------------ ## +## parse.error=verbose overflow. ## +## ------------------------------ ## + +# Imagine the case where YYSTACK_ALLOC_MAXIMUM = YYSIZE_MAXIMUM and an +# invocation of yysyntax_error has caused yymsg_alloc to grow to exactly +# YYSTACK_ALLOC_MAXIMUM (perhaps because the normal doubling of size had +# to be clipped to YYSTACK_ALLOC_MAXIMUM). In an old version of yacc.c, +# a subsequent invocation of yysyntax_error that overflows during its +# size calculation would return YYSIZE_MAXIMUM to yyparse. Then, +# yyparse would invoke yyerror using the old contents of yymsg. + +AT_SETUP([[parse.error=verbose overflow]]) + +AT_BISON_OPTION_PUSHDEFS +AT_DATA_GRAMMAR([input.y], +[[%code { + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ + + /* This prevents this test case from having to induce error messages + large enough to overflow size_t. */ + #define YYSIZE_T unsigned char + + /* Bring in malloc and set EXIT_SUCCESS so yacc.c doesn't try to + provide a malloc prototype using our YYSIZE_T. */ + #include + #ifndef EXIT_SUCCESS + # define EXIT_SUCCESS 0 + #endif + + /* Max depth is usually much smaller than YYSTACK_ALLOC_MAXIMUM, and + we don't want gcc to warn everywhere this constant would be too big + to make sense for our YYSIZE_T. */ + #define YYMAXDEPTH 100 +} + +%define parse.error verbose + +%% + +start: syntax_error1 check syntax_error2 ; + +// Induce a syntax error message whose total length causes yymsg in +// yyparse to be reallocated to size YYSTACK_ALLOC_MAXIMUM, which +// should be 255. Each token here is 64 bytes. +syntax_error1: + "123456789112345678921234567893123456789412345678951234567896123A" +| "123456789112345678921234567893123456789412345678951234567896123B" +| "123456789112345678921234567893123456789412345678951234567896123C" +| error 'a' 'b' 'c' +; + +check: +{ + if (yymsg_alloc != YYSTACK_ALLOC_MAXIMUM + || YYSTACK_ALLOC_MAXIMUM != YYSIZE_MAXIMUM + || YYSIZE_MAXIMUM != 255) + { + fprintf (stderr, + "The assumptions of this test group are no longer\n" + "valid, so it may no longer catch the error it was\n" + "designed to catch. Specifically, the following\n" + "values should all be 255:\n\n"); + fprintf (stderr, " yymsg_alloc = %d\n", yymsg_alloc); + fprintf (stderr, " YYSTACK_ALLOC_MAXIMUM = %d\n", + YYSTACK_ALLOC_MAXIMUM); + fprintf (stderr, " YYSIZE_MAXIMUM = %d\n", YYSIZE_MAXIMUM); + YYABORT; + } +} +; + +// Now overflow. +syntax_error2: + "123456789112345678921234567893123456789412345678951234567896123A" +| "123456789112345678921234567893123456789412345678951234567896123B" +| "123456789112345678921234567893123456789412345678951234567896123C" +| "123456789112345678921234567893123456789412345678951234567896123D" +| "123456789112345678921234567893123456789412345678951234567896123E" +; + +%% + +]AT_YYERROR_DEFINE[ + /* Induce two syntax error messages (which requires full error + recovery by shifting 3 tokens). */ +]AT_YYLEX_DEFINE(["abc"])[ +int +main (void) +{ + /* Push parsers throw away the message buffer between tokens, so skip + this test under maintainer-push-check. */ + if (YYPUSH) + return 77; + return yyparse (); +} +]]) + +AT_BISON_CHECK([[-o input.c input.y]]) + +# gcc warns about tautologies and fallacies involving comparisons for +# unsigned char. However, it doesn't produce these same warnings for +# size_t and many other types when the warnings would seem to make just +# as much sense. We ignore the warnings. +[CFLAGS="$NO_WERROR_CFLAGS"] +AT_COMPILE([[input]]) + +AT_PARSER_CHECK([[./input]], [[2]], [], +[[syntax error, unexpected 'a', expecting 123456789112345678921234567893123456789412345678951234567896123A or 123456789112345678921234567893123456789412345678951234567896123B or 123456789112345678921234567893123456789412345678951234567896123C +syntax error +memory exhausted +]]) +AT_BISON_OPTION_POPDEFS +AT_CLEANUP + + + +## ------------------------ ## +## LAC: Exploratory stack. ## +## ------------------------ ## + +AT_SETUP([[LAC: Exploratory stack]]) + +m4_pushdef([AT_LAC_CHECK], [ + +AT_BISON_OPTION_PUSHDEFS([%debug $1]) + +AT_DATA_GRAMMAR([input.y], +[[%code { + ]AT_YYERROR_DECLARE[ + int yylex (]AT_PURE_IF([[YYSTYPE *]], [[void]])[); +} +%debug +]$1[ +%define parse.error verbose +%token 'c' + +%% + +// default reductions in inconsistent states +// v v v v v v v v v v v v v v +S: A B A A B A A A A B A A A A A A A B C C A A A A A A A A A A A A B ; +// ^ ^ ^ +// LAC reallocs + +A: 'a' | /*empty*/ { printf ("inconsistent default reduction\n"); } ; +B: 'b' ; +C: /*empty*/ { printf ("consistent default reduction\n"); } ; + +%% +]AT_YYERROR_DEFINE[ +int +yylex (]AT_PURE_IF([[YYSTYPE *v]], [[void]])[) +{ + static char const *input = "bbbbc";]AT_PURE_IF([[ + *v = 0;]])[ + return *input++; +} + +]AT_MAIN_DEFINE[ +]]) + +AT_BISON_CHECK([[-Dparse.lac=full -Dparse.lac.es-capacity-initial=1 \ + -Dparse.lac.memory-trace=full \ + -o input.c input.y]], [[0]], [], +[[input.y: warning: 21 shift/reduce conflicts [-Wconflicts-sr] +]]) +AT_COMPILE([[input]]) +AT_PARSER_CHECK([[./input --debug > stdout.txt 2> stderr.txt]], [[1]]) + +# Make sure syntax error doesn't forget that 'a' is expected. It would +# be forgotten without lookahead correction. +AT_CHECK([[grep 'syntax error,' stderr.txt]], [[0]], +[[syntax error, unexpected 'c', expecting 'a' or 'b' +]]) + +# Check number of default reductions in inconsistent states to be sure +# syntax error is detected before unnecessary reductions are performed. +AT_CHECK([[$PERL -0777 -ne 'print s/inconsistent default reduction//g;' \ + < stdout.txt || exit 77]], [[0]], [[14]]) + +# Check number of default reductions in consistent states to be sure +# it is performed before the syntax error is detected. +AT_CHECK([[$PERL -0777 -ne 'print s/\bconsistent default reduction//g;' \ + < stdout.txt || exit 77]], [[0]], [[2]]) + +# Check number of reallocs to be sure reallocated memory isn't somehow +# lost between LAC invocations. +AT_CHECK([[$PERL -0777 -ne 'print s/\(realloc//g;' < stderr.txt \ + || exit 77]], [[0]], [[3]]) + +AT_BISON_OPTION_POPDEFS +]) + +AT_LAC_CHECK([[%define api.push-pull pull]]) +AT_LAC_CHECK([[%define api.push-pull pull %define api.pure]]) +AT_LAC_CHECK([[%define api.push-pull both]]) +AT_LAC_CHECK([[%define api.push-pull both %define api.pure]]) + +m4_popdef([AT_LAC_CHECK]) + +AT_CLEANUP + + + +## ------------------------ ## +## LAC: Memory exhaustion. ## +## ------------------------ ## + +AT_SETUP([[LAC: Memory exhaustion]]) + +m4_pushdef([AT_LAC_CHECK], +[AT_BISON_OPTION_PUSHDEFS([%debug]) +AT_DATA_GRAMMAR([input.y], +[[%code { + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ + #define YYMAXDEPTH 8 +} +%debug +%error-verbose + +%% + +S: A A A A A A A A A ; +A: /*empty*/ | 'a' ; + +%% +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE(["$1"])[ +]AT_MAIN_DEFINE[ +]]) + +AT_BISON_CHECK([[-Dparse.lac=full -Dparse.lac.es-capacity-initial=1 \ + -o input.c input.y]], [[0]], [], +[[input.y: warning: 8 shift/reduce conflicts [-Wconflicts-sr] +]]) +AT_COMPILE([[input]]) +AT_BISON_OPTION_POPDEFS +]) + +# Check for memory exhaustion during parsing. +AT_LAC_CHECK([]) +AT_PARSER_CHECK([[./input --debug]], [[2]], [], +[[Starting parse +Entering state 0 +Reading a token: Now at end of input. +LAC: initial context established for $end +LAC: checking lookahead $end: R2 G3 R2 G5 R2 G6 R2 G7 R2 G8 R2 G9 R2 G10 R2 G11 R2 (max size exceeded) +memory exhausted +Cleanup: discarding lookahead token $end () +Stack now 0 +]]) + +# Induce an immediate syntax error with an undefined token, and check +# for memory exhaustion while building syntax error message. +AT_LAC_CHECK([z], [[0]]) +AT_PARSER_CHECK([[./input --debug]], [[2]], [], +[[Starting parse +Entering state 0 +Reading a token: Next token is token $undefined () +LAC: initial context established for $undefined +LAC: checking lookahead $undefined: Always Err +Constructing syntax error message +LAC: checking lookahead $end: R2 G3 R2 G5 R2 G6 R2 G7 R2 G8 R2 G9 R2 G10 R2 G11 R2 (max size exceeded) +syntax error +memory exhausted +Cleanup: discarding lookahead token $undefined () +Stack now 0 +]]) + +m4_popdef([AT_LAC_CHECK]) + +AT_CLEANUP + + +## ---------------------- ## +## Lex and parse params. ## +## ---------------------- ## + +# AT_TEST(SKELETON) +# ----------------- +# Check that the identifier of the params is properly fetched +# even when there are trailing blanks. + +m4_pushdef([AT_TEST], +[AT_SETUP([[Lex and parse params: $1]]) + +## FIXME: Improve parsing of parse-param. +AT_BISON_OPTION_PUSHDEFS([%locations %skeleton "$1" %parse-param { int x } %parse-param { int y }]) + +AT_DATA_GRAMMAR([input.y], +[[%locations +%skeleton "$1" +%union { int ival; } +%parse-param { int x } +// Spaces, tabs, and new lines. +%parse-param { @&t@ +@tb@ int y@tb@ @&t@ + @&t@ + @&t@ +} + +%{ + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ +%} + +%% +exp: 'a' { fprintf (stdout, "x: %d, y: %d\n", x, y); }; +%% +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE(["a"])[ + +]AT_SKEL_CC_IF( +[int +yyparse (int x, int y) +{ + yy::parser parser(x, y); + return parser.parse (); +} +])[ + +int +main (void) +{ + return yyparse(1, 2); +} +]]) + +AT_FULL_COMPILE([input]) +AT_PARSER_CHECK([./input], 0, [[x: 1, y: 2 +]]) +AT_BISON_OPTION_POPDEFS + +AT_CLEANUP +]) + +## FIXME: test Java, and iterate over skeletons. +AT_TEST([yacc.c]) +AT_TEST([glr.c]) +AT_TEST([lalr1.cc]) +AT_TEST([glr.cc]) + +m4_popdef([AT_TEST]) + + +## ----------------------- ## +## stdio.h is not needed. ## +## ----------------------- ## + +# At some point, by accident, yy_location_print_ was using fprintf and +# FILE which are from stdio.h, which we do not require. +AT_SETUP([[stdio.h is not needed]]) + +AT_BISON_OPTION_PUSHDEFS + +AT_DATA_GRAMMAR([input.y], +[[%locations +%code +{ + static int yylex (void) { return 0; } + static void yyerror (const char* msg) { (void) msg; } +} +%% +exp: {} +%% +]AT_MAIN_DEFINE[ +]]) + +AT_FULL_COMPILE([input]) + +AT_BISON_OPTION_POPDEFS + +AT_CLEANUP