# Checking the Bison scanner. -*- Autotest -*- # Copyright (C) 2002-2013 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 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. ## ## ---------------- ## AT_SETUP([Invalid inputs]) AT_DATA([input.y], [[\000\001\002\377? %% ? default: 'a' } %& %a-does-not-exist %- %{ ]]) AT_CHECK([[$PERL -pi -e 's/\\(\d{3})/chr(oct($1))/ge' input.y || exit 77]]) AT_BISON_CHECK([input.y], [1], [], [[input.y:1.1-2: error: invalid characters: '\0\001\002\377?' input.y:3.1: error: invalid character: '?' input.y:4.14: error: invalid character: '}' input.y:5.1: error: invalid character: '%' input.y:5.2: error: invalid character: '&' input.y:6.1-17: error: invalid directive: '%a-does-not-exist' input.y:7.1: error: invalid character: '%' input.y:7.2: error: invalid character: '-' input.y:8.1-9.0: error: missing '%}' at end of file input.y:8.1-9.0: error: syntax error, unexpected %{...%} ]]) AT_CLEANUP AT_SETUP([Invalid inputs with {}]) # We used to SEGV here. See # http://lists.gnu.org/archive/html/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: syntax error, unexpected %initial-action, expecting {...} ]]) AT_CLEANUP ## ------------ ## ## Invalid $n. ## ## ------------ ## AT_SETUP([Invalid $n and @n]) AT_DATA([input.y], [[%% exp: %empty { $$ = $1 ; }; exp: %empty { @$ = @1 ; }; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:2.20-21: error: integer out of range: '$1' exp: %empty { $$ = $1 ; }; ^^ input.y:3.20-21: error: integer out of range: '@1' exp: %empty { @$ = @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 exp: foo { $$; } foo { $2; } foo ^^ input.y:5.24-25: error: $2 of 'exp' has no declared type exp: foo { $$; } foo { $2; } foo ^^ input.y:5.6-32: warning: type clash on default action: != <> [-Wother] exp: foo { $$; } foo { $2; } foo ^^^^^^^^^^^^^^^^^^^^^^^^^^^ input.y:6.6-8: warning: type clash on default action: != <> [-Wother] | foo ^^^ input.y:7.6-11: warning: empty rule for typed nonterminal, and no action [-Wother] | %empty ^^^^^^ ]]) AT_CLEANUP # _AT_UNUSED_VALUES_DECLARATIONS() # -------------------------------- # Generate the token, type, and destructor # declarations for the unused values tests. m4_define([_AT_UNUSED_VALUES_DECLARATIONS], [[[%token INT; %type a b c d e f g h i j k l; %destructor { destroy ($$); } INT a b c d e f g h i j k l;]]]) # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES) # ---------------------------------------------------------------- # Generate a grammar to test unused values, compile it, run 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[; } ; 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; };]]m4_ifval($1, [ _AT_UNUSED_VALUES_DECLARATIONS]) ) AT_BISON_CHECK(m4_ifval($2, [--warnings=midrule-values ])[-fcaret input.y], [0], [], [[input.y:11.10-32: warning: unset value: $][$ [-Wother] a: INT | INT { } INT { } INT { }; ^^^^^^^^^^^^^^^^^^^^^^^ input.y:11.10-12: warning: unused value: $][1 [-Wother] a: INT | INT { } INT { } INT { }; ^^^ input.y:11.18-20: warning: unused value: $][3 [-Wother] a: INT | INT { } INT { } INT { }; ^^^ input.y:11.26-28: warning: unused value: $][5 [-Wother] a: INT | INT { } INT { } INT { }; ^^^ input.y:12.10-15: warning: empty rule for typed nonterminal, and no action [-Wother] b: INT | %empty; ^^^^^^ ]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $][$ [-Wmidrule-values] c: INT | INT { $][1; } INT { $2; } INT { $4; }; ^^^^^^^ input.y:13.26-41: warning: unset value: $][$ [-Wmidrule-values] c: INT | INT { $][1; } INT { $2; } INT { $4; }; ^^^^^^^^^^^^^^^^ ]]])[[input.y:13.10-62: warning: unset value: $][$ [-Wother] c: INT | INT { $][1; } INT { $2; } INT { $4; }; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ input.y:13.22-24: warning: unused value: $][3 [-Wother] c: INT | INT { $][1; } INT { $2; } INT { $4; }; ^^^ input.y:13.43-45: warning: unused value: $][5 [-Wother] c: INT | INT { $][1; } INT { $2; } INT { $4; }; ^^^ ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $][$ [-Wmidrule-values] d: INT | INT { } INT { $][1; } INT { $2; }; ^^^ ]]])[[input.y:14.10-49: warning: unset value: $][$ [-Wother] d: INT | INT { } INT { $][1; } INT { $2; }; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ input.y:14.18-20: warning: unused value: $][3 [-Wother] d: INT | INT { } INT { $][1; } INT { $2; }; ^^^ input.y:14.30-32: warning: unused value: $][5 [-Wother] d: INT | INT { } INT { $][1; } INT { $2; }; ^^^ input.y:15.10-37: warning: unset value: $][$ [-Wother] e: INT | INT { } INT { } INT { $][1; }; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ input.y:15.18-20: warning: unused value: $][3 [-Wother] e: INT | INT { } INT { } INT { $][1; }; ^^^ input.y:15.27-29: warning: unused value: $][5 [-Wother] e: INT | INT { } INT { } INT { $][1; }; ^^^ input.y:17.10-58: warning: unset value: $][$ [-Wother] g: INT | INT { $$; } INT { $$; } INT { }; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ input.y:17.10-12: warning: unused value: $][1 [-Wother] g: INT | INT { $$; } INT { $$; } INT { }; ^^^ ]]m4_ifval($2, [[[input.y:17.14-29: warning: unused value: $][2 [-Wmidrule-values] g: INT | INT { $$; } INT { $$; } INT { }; ^^^^^^^^^^^^^^^^ ]]])[[input.y:17.31-33: warning: unused value: $][3 [-Wother] g: INT | INT { $$; } INT { $$; } INT { }; ^^^ ]]m4_ifval($2, [[[input.y:17.35-50: warning: unused value: $][4 [-Wmidrule-values] g: INT | INT { $$; } INT { $$; } INT { }; ^^^^^^^^^^^^^^^^ ]]])[[input.y:17.52-54: warning: unused value: $][5 [-Wother] g: INT | INT { $$; } INT { $$; } INT { }; ^^^ input.y:18.10-72: warning: unset value: $][$ [-Wother] h: INT | INT { $$; } INT { $$ = $2; } INT { }; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ input.y:18.10-12: warning: unused value: $][1 [-Wother] h: INT | INT { $$; } INT { $$ = $2; } INT { }; ^^^ input.y:18.31-33: warning: unused value: $][3 [-Wother] h: INT | INT { $$; } INT { $$ = $2; } INT { }; ^^^ ]]m4_ifval($2, [[[input.y:18.35-64: warning: unused value: $][4 [-Wmidrule-values] h: INT | INT { $$; } INT { $$ = $2; } INT { }; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ]]])[[input.y:18.66-68: warning: unused value: $][5 [-Wother] h: INT | INT { $$; } INT { $$ = $2; } INT { }; ^^^ ]]m4_ifval($2, [[[input.y:20.18-37: warning: unused value: $][3 [-Wmidrule-values] j: INT | INT INT { $$ = 1; } { $][$ = $][1 + $][2; }; ^^^^^^^^^^^^^^^^^^^^ ]]])[[input.y:21.10-68: warning: unset value: $][$ [-Wother] k: INT | INT INT { $$; } { $$ = $3; } { }; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ input.y:21.10-12: warning: unused value: $][1 [-Wother] k: INT | INT INT { $$; } { $$ = $3; } { }; ^^^ input.y:21.14-16: warning: unused value: $][2 [-Wother] k: INT | INT INT { $$; } { $$ = $3; } { }; ^^^ ]]m4_ifval($2, [[[input.y:21.35-64: warning: unused value: $][4 [-Wmidrule-values] k: INT | INT INT { $$; } { $$ = $3; } { }; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ]]])) ]) ## --------------- ## ## Unused values. ## ## --------------- ## AT_SETUP([Unused values]) AT_CHECK_UNUSED_VALUES AT_CHECK_UNUSED_VALUES(, [1]) AT_CLEANUP ## ------------------------------------------ ## ## Unused values before symbol declarations. ## ## ------------------------------------------ ## AT_SETUP([Unused values before symbol declarations]) AT_CHECK_UNUSED_VALUES([1]) AT_CHECK_UNUSED_VALUES([1], [1]) AT_CLEANUP ## --------------------------------------------- ## ## Default %printer and %destructor redeclared. ## ## --------------------------------------------- ## AT_SETUP([Default %printer and %destructor redeclared]) AT_DATA([[input.y]], [[%destructor { destroy ($$); } <*> <*> %printer { print ($$); } <*> <*> %destructor { destroy ($$); } <*> %printer { print ($$); } <*> %destructor { destroy ($$); } <> <> %printer { print ($$); } <> <> %destructor { destroy ($$); } <> %printer { print ($$); } <> %% start: %empty; %destructor { destroy ($$); } <*>; %printer { print ($$); } <*>; %destructor { destroy ($$); } <>; %printer { print ($$); } <>; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:1.13-29: error: %destructor redeclaration for <*> %destructor { destroy ($$); } <*> <*> ^^^^^^^^^^^^^^^^^ input.y:1.13-29: previous declaration %destructor { destroy ($$); } <*> <*> ^^^^^^^^^^^^^^^^^ input.y:2.10-24: error: %printer redeclaration for <*> %printer { print ($$); } <*> <*> ^^^^^^^^^^^^^^^ input.y:2.10-24: previous declaration %printer { print ($$); } <*> <*> ^^^^^^^^^^^^^^^ input.y:4.13-29: error: %destructor redeclaration for <*> %destructor { destroy ($$); } <*> ^^^^^^^^^^^^^^^^^ input.y:1.13-29: previous declaration %destructor { destroy ($$); } <*> <*> ^^^^^^^^^^^^^^^^^ input.y:5.10-24: error: %printer redeclaration for <*> %printer { print ($$); } <*> ^^^^^^^^^^^^^^^ input.y:2.10-24: previous declaration %printer { print ($$); } <*> <*> ^^^^^^^^^^^^^^^ input.y:7.13-29: error: %destructor redeclaration for <> %destructor { destroy ($$); } <> <> ^^^^^^^^^^^^^^^^^ input.y:7.13-29: previous declaration %destructor { destroy ($$); } <> <> ^^^^^^^^^^^^^^^^^ input.y:8.10-24: error: %printer redeclaration for <> %printer { print ($$); } <> <> ^^^^^^^^^^^^^^^ input.y:8.10-24: previous declaration %printer { print ($$); } <> <> ^^^^^^^^^^^^^^^ input.y:10.13-29: error: %destructor redeclaration for <> %destructor { destroy ($$); } <> ^^^^^^^^^^^^^^^^^ input.y:7.13-29: previous declaration %destructor { destroy ($$); } <> <> ^^^^^^^^^^^^^^^^^ input.y:11.10-24: error: %printer redeclaration for <> %printer { print ($$); } <> ^^^^^^^^^^^^^^^ input.y:8.10-24: previous declaration %printer { print ($$); } <> <> ^^^^^^^^^^^^^^^ input.y:17.13-29: error: %destructor redeclaration for <*> %destructor { destroy ($$); } <*>; ^^^^^^^^^^^^^^^^^ input.y:4.13-29: previous declaration %destructor { destroy ($$); } <*> ^^^^^^^^^^^^^^^^^ input.y:18.10-24: error: %printer redeclaration for <*> %printer { print ($$); } <*>; ^^^^^^^^^^^^^^^ input.y:5.10-24: previous declaration %printer { print ($$); } <*> ^^^^^^^^^^^^^^^ input.y:20.13-29: error: %destructor redeclaration for <> %destructor { destroy ($$); } <>; ^^^^^^^^^^^^^^^^^ input.y:10.13-29: previous declaration %destructor { destroy ($$); } <> ^^^^^^^^^^^^^^^^^ input.y:21.10-24: error: %printer redeclaration for <> %printer { print ($$); } <>; ^^^^^^^^^^^^^^^ input.y:11.10-24: previous declaration %printer { print ($$); } <> ^^^^^^^^^^^^^^^ ]]) AT_CLEANUP ## ---------------------------------------------- ## ## Per-type %printer and %destructor redeclared. ## ## ---------------------------------------------- ## AT_SETUP([Per-type %printer and %destructor redeclared]) AT_DATA([[input.y]], [[%destructor { destroy ($$); } %printer { print ($$); } %destructor { destroy ($$); } %printer { print ($$); } %% start: %empty; %destructor { destroy ($$); } ; %printer { print ($$); } ; ]]) AT_BISON_CHECK([input.y], [1], [], [[input.y:4.13-29: error: %destructor redeclaration for input.y:1.13-29: previous declaration input.y:4.13-29: error: %destructor redeclaration for input.y:4.13-29: previous declaration input.y:5.10-24: error: %printer redeclaration for input.y:2.10-24: previous declaration input.y:5.10-24: error: %printer redeclaration for input.y:5.10-24: previous declaration input.y:11.13-29: error: %destructor redeclaration for input.y:1.13-29: previous declaration input.y:11.13-29: error: %destructor redeclaration for input.y:4.13-29: previous declaration input.y:12.10-24: error: %printer redeclaration for input.y:5.10-24: previous declaration input.y:12.10-24: error: %printer redeclaration for input.y:2.10-24: previous declaration ]]) AT_CLEANUP ## ------------------- ## ## Undefined symbols. ## ## ------------------- ## AT_SETUP([Undefined symbols]) AT_DATA([[input.y]], [[%printer {} foo baz %destructor {} bar %type qux %% exp: bar; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:2.16-18: error: symbol bar is used, but is not defined as a token and has no rules %destructor {} bar ^^^ input.y:1.17-19: warning: symbol baz is used, but is not defined as a token and has no rules [-Wother] %printer {} foo baz ^^^ input.y:1.13-15: warning: symbol foo is used, but is not defined as a token and has no rules [-Wother] %printer {} foo baz ^^^ input.y:3.13-15: warning: symbol qux is used, but is not defined as a token and has no rules [-Wother] %type qux ^^^ ]]) AT_CLEANUP ## ----------------------------------------------------- ## ## Unassociated types used for a printer or destructor. ## ## ----------------------------------------------------- ## AT_SETUP([Unassociated types used for a printer or destructor]) AT_DATA([[input.y]], [[%token tag1 %type tag2 %printer { } %destructor { } %% exp: tag1 { $1; } | tag2 { $1; } tag2: "a" { $$; } ]]) 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] start: end end tagged tagged { $1; $3; } ; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ input.y:6.12-14: warning: unused value: $2 [-Wother] start: end end tagged tagged { $1; $3; } ; ^^^ input.y:7.6-8: warning: unset value: $$ [-Wother] end: { } ; ^^^ ]]) AT_DATA([[input.y]], [[%destructor { destroy ($$); } <*> %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: $$ [-Wother] start: end end { $1; } ; ^^^^^^^^^^^^^^^ input.y:6.12-14: warning: unused value: $2 [-Wother] start: end end { $1; } ; ^^^ input.y:7.6-8: warning: unset value: $$ [-Wother] end: { } ; ^^^ ]]) AT_CLEANUP ## ---------------------- ## ## Incompatible Aliases. ## ## ---------------------- ## AT_SETUP([Incompatible Aliases]) AT_DATA([input.y], [[%token foo "foo" %type foo %printer {bar} foo %destructor {bar} foo %left foo %type "foo" %printer {baz} "foo" %destructor {baz} "foo" %left "foo" %% exp: foo; ]]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:8.7-11: error: %type redeclaration for foo %type "foo" ^^^^^ input.y:3.7-11: previous declaration %type foo ^^^^^ input.y:10.13-17: error: %destructor redeclaration for foo %destructor {baz} "foo" ^^^^^ input.y:5.13-17: previous declaration %destructor {bar} foo ^^^^^ input.y:9.10-14: error: %printer redeclaration for foo %printer {baz} "foo" ^^^^^ input.y:4.10-14: previous declaration %printer {bar} foo ^^^^^ input.y:11.1-5: error: %left redeclaration for foo %left "foo" ^^^^^ input.y:6.1-5: previous declaration %left foo ^^^^^ ]]) 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([input.y], [1], [], [[input.y:1.1: error: syntax error, unexpected end of file ]]) AT_DATA([input.y], [{} ]) AT_BISON_CHECK([-fcaret input.y], [1], [], [[input.y:1.1-2: error: syntax error, unexpected {...} {} ^^ ]]) AT_DATA_GRAMMAR([input.y], [[%{ /* 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" %% /* 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 "; /* " */ static size_t toknum; assert (toknum < sizeof input); 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_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_CLEANUP ## --------- ## ## Require. ## ## --------- ## m4_define([AT_CHECK_REQUIRE], [AT_SETUP([Require $1]) AT_DATA_GRAMMAR([input.y], [[%require "$1"; %% empty_file: %empty; ]]) AT_BISON_CHECK([-o input.c input.y], $2, [], ignore) 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 user token number. AT_DATA_GRAMMAR([input.y], [[%token 'a' "a" %% start: 'a'; %% ]]) AT_BISON_CHECK([-o input.c input.y]) 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[ ]]) AT_BISON_OPTION_POPDEFS # POSIX Yacc accept periods, but not dashes. AT_BISON_CHECK([--yacc -Wno-error input.y], [], [], [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc] input.y:20.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc] ]]) # So warn about them. AT_BISON_CHECK([-Wyacc input.y], [], [], [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc] input.y:20.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash [-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_CLEANUP ## ----------------- ## ## Numbered tokens. ## ## ----------------- ## AT_SETUP([Numbered tokens]) 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: user token number 11259375 redeclaration for HEXADECIMAL_1 redecl.y:9.8-16: previous declaration for DECIMAL_1 redecl.y:12.10-18: error: user token number 16702650 redeclaration for DECIMAL_2 redecl.y:11.10-22: 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:10.24-44: error: integer out of range: '0xFFFFFFFFFFFFFFFFFFF' ]]) 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 ($$) ]]) AT_BISON_CHECK([-fcaret -o input.c input.y], 1, [], [[input.y:1.10-2.0: error: missing '"' at end of line %token A "a ^^ input.y:4.10-5.0: error: missing "'" at end of line %token C '1 ^^ input.y:14.11-15.0: error: missing "'" at end of line %type 'a ^^ input.y:16.11-17.0: error: missing '"' at end of line %type "a ^^ input.y:19.13-20.0: error: missing '}' at end of file %destructor { free ($$) ^^^^^^^^^^^ input.y:20.1: error: syntax 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 ## --------------------- ## ## %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 ## ---------------- ## ## %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:2.9-11: error: %define variable 'var' redefined input-redefined.y:1.9-11: previous definition input-redefined.y:3.10-12: error: %define variable 'var' redefined input-redefined.y:2.9-11: previous definition ]]) AT_DATA([input-unused.y], [[%define var "value" %% start: %empty; ]]) AT_BISON_CHECK([[input-unused.y]], [[1]], [], [[input-unused.y:1.9-11: 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:1.9-11: error: %define variable 'var' redefined :2: previous definition ]]) AT_DATA([[input-dg.y]], [[%define var "gram" %% start: %empty; ]]) AT_BISON_CHECK([[-fcaret -Dvar=cmd-d input-dg.y]], [[1]], [], [[input-dg.y:1.9-11: error: %define variable 'var' redefined %define var "gram" ^^^ :3: previous definition ]]) AT_DATA([[input-unused.y]], [[%% start: %empty; ]]) AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [], [[:2: error: %define variable 'unused-d' is not used :3: 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 public "maybe" %define parser_class_name "Input" %% start: %empty; ]]) AT_BISON_CHECK([[Input.y]], [1], [], [[Input.y:2.9-14: error: invalid value for %define Boolean variable 'public' ]]) 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:1.9-28: error: invalid value for %define variable 'lr.default-reduction': 'bogus' %define lr.default-reduction bogus ^^^^^^^^^^^^^^^^^^^^ input.y:1.9-28: accepted value: 'most' input.y:1.9-28: accepted value: 'consistent' input.y:1.9-28: 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:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither' %define api.push-pull neither ^^^^^^^^^^^^^ input.y:1.9-21: accepted value: 'pull' input.y:1.9-21: accepted value: 'push' input.y:1.9-21: accepted value: 'both' ]]) 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 api.namespace "foo" %define variant %% start: %empty; ]]) AT_BISON_CHECK([[-fcaret input.y]], [1], [], [[input.y:1.9-21: warning: deprecated directive, use '%define api.push-pull both' [-Wdeprecated] %define api.push_pull both ^^^^^^^^^^^^^ input.y:2.9-34: warning: deprecated directive, use '%define lr.keep-unreachable-state maybe' [-Wdeprecated] %define lr.keep_unreachable_states maybe ^^^^^^^^^^^^^^^^^^^^^^^^^^ input.y:3.9-17: warning: deprecated directive, use '%define api.namespace foo' [-Wdeprecated] %define namespace "foo" ^^^^^^^^^ input.y:4.9-21: error: %define variable 'api.namespace' redefined %define api.namespace "foo" ^^^^^^^^^^^^^ input.y:3.9-17: previous definition %define namespace "foo" ^^^^^^^^^ input.y:5.9-15: warning: deprecated directive, use '%define api.value.type variant' [-Wdeprecated] %define variant ^^^^^^^ ]]) AT_CLEANUP ## ------------------------- ## ## Unused %define api.pure. ## ## ------------------------- ## AT_SETUP([[Unused %define api.pure]]) # AT_CHECK_API_PURE(DECLS, VALUE) # ------------------------------- # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS # are specified. m4_define([AT_CHECK_API_PURE], [ AT_DATA([[input.y]], [[%define api.pure ]$2[ ]$1[ %% start: %empty; ]]) AT_BISON_CHECK([[input.y]], [[1]], [], [[input.y:1.9-16: error: %define variable 'api.pure' is not used ]]) ]) AT_CHECK_API_PURE([[%language "c++"]], [[]]) AT_CHECK_API_PURE([[%language "c++"]], [[false]]) AT_CHECK_API_PURE([[%language "c++" %glr-parser]], [[""]]) AT_CHECK_API_PURE([[%language "c++" %glr-parser]], [[false]]) AT_CHECK_API_PURE([[%language "java"]], [[true]]) AT_CHECK_API_PURE([[%language "java"]], [[false]]) 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++" %defines %define api.namespace "]$1[" %% start: %empty; ]]) AT_BISON_CHECK([[input.y]], [1], [], [m4_foreach([b4_arg], m4_dquote(m4_shift($@)), [[input.y:3.9-21: error: ]b4_arg[ ]])]) ]) AT_CHECK_NAMESPACE_ERROR([[]], [[namespace reference is empty]]) AT_CHECK_NAMESPACE_ERROR([[ @tb@@tb@ @tb@ @tb@]], [[namespace reference is empty]]) AT_CHECK_NAMESPACE_ERROR([[foo::::bar]], [[namespace reference has consecutive "::"]]) AT_CHECK_NAMESPACE_ERROR([[foo:: @tb@::bar]], [[namespace reference has consecutive "::"]]) AT_CHECK_NAMESPACE_ERROR([[::::bar]], [[namespace reference has consecutive "::"]]) AT_CHECK_NAMESPACE_ERROR([[:: ::bar]], [[namespace reference has consecutive "::"]]) AT_CHECK_NAMESPACE_ERROR([[foo::bar::@tb@::]], [[namespace reference has consecutive "::"]], [[namespace reference has a trailing "::"]]) AT_CHECK_NAMESPACE_ERROR([[foo::bar::]], [[namespace reference has a trailing "::"]]) AT_CHECK_NAMESPACE_ERROR([[foo::bar:: @tb@]], [[namespace reference has a trailing "::"]]) AT_CHECK_NAMESPACE_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. # FIXME: AT_DATA or some variant of AT_DATA may eventually permit # the final newline to be omitted. See the threads starting at # . AT_SETUP([[Bad character literals]]) AT_DATA([empty.y], [[%% start: ''; start: ' ]]) AT_CHECK([[$PERL -e "print 'start: \'';" >> empty.y || exit 77]]) AT_BISON_CHECK([-fcaret empty.y], [1], [], [[empty.y:2.8-9: warning: empty character literal [-Wother] start: ''; ^^ empty.y:3.8-4.0: error: missing "'" at end of line start: ' ^ empty.y:3.8-4.0: warning: empty character literal [-Wother] start: ' ^ empty.y:4.8: error: missing "'" at end of file start: ' ^ empty.y:4.8: warning: empty character literal [-Wother] start: ' ^ ]]) AT_DATA([two.y], [[%% start: 'ab'; start: 'ab ]]) AT_CHECK([[$PERL -e "print 'start: \'ab';" >> two.y || exit 77]]) AT_BISON_CHECK([two.y], [1], [], [[two.y:2.8-11: warning: extra characters in character literal [-Wother] two.y:3.8-4.0: error: missing "'" at end of line two.y:3.8-4.0: warning: extra characters in character literal [-Wother] two.y:4.8-10: error: missing "'" at end of file two.y:4.8-10: warning: extra characters in character literal [-Wother] ]]) AT_DATA([three.y], [[%% start: 'abc'; start: 'abc ]]) AT_CHECK([[$PERL -e "print 'start: \'abc';" >> three.y || exit 77]]) AT_BISON_CHECK([three.y], [1], [], [[three.y:2.8-12: warning: extra characters in character literal [-Wother] three.y:3.8-4.0: error: missing "'" at end of line three.y:3.8-4.0: warning: extra characters in character literal [-Wother] three.y:4.8-11: error: missing "'" at end of file three.y:4.8-11: warning: extra characters in character literal [-Wother] ]]) AT_CLEANUP ## ------------------------- ## ## Bad escapes in literals. ## ## ------------------------- ## AT_SETUP([[Bad escapes in literals]]) AT_DATA([input.y], [[%% start: '\777' '\0' '\xfff' '\x0' '\uffff' '\u0000' '\Uffffffff' '\U00000000' '\ ' '\A'; ]]) # It is not easy to create special characters, we cannot even trust tr. # Beside we cannot even expect "echo '\0'" to output two characters # (well three with \n): at least Bash 3.2 converts the two-character # sequence "\0" into a single NUL character. AT_CHECK([[$PERL -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \ || exit 77]]) AT_BISON_CHECK([input.y], [1], [], [[input.y:2.9-12: error: invalid number after \-escape: 777 input.y:2.8-13: warning: empty character literal [-Wother] input.y:2.16-17: error: invalid number after \-escape: 0 input.y:2.15-18: warning: empty character literal [-Wother] input.y:2.21-25: error: invalid number after \-escape: xfff input.y:2.20-26: warning: empty character literal [-Wother] input.y:2.29-31: error: invalid number after \-escape: x0 input.y:2.28-32: warning: empty character literal [-Wother] input.y:3.9-14: error: invalid number after \-escape: uffff input.y:3.8-15: warning: empty character literal [-Wother] input.y:3.18-23: error: invalid number after \-escape: u0000 input.y:3.17-24: warning: empty character literal [-Wother] input.y:3.27-36: error: invalid number after \-escape: Uffffffff input.y:3.26-37: warning: empty character literal [-Wother] input.y:3.40-49: error: invalid number after \-escape: U00000000 input.y:3.39-50: warning: empty character literal [-Wother] input.y:4.9-10: error: invalid character after \-escape: ' ' input.y:4.8-11: warning: empty character literal [-Wother] input.y:4.14-15: error: invalid character after \-escape: A input.y:4.13-16: warning: empty character literal [-Wother] 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 ## ------------------------- ## ## LAC: Errors for %define. ## ## ------------------------- ## AT_SETUP([[LAC: Errors for %define]]) AT_DATA([[input.y]], [[%% start: %empty; ]]) # parse.lac.* options are useless if LAC isn't actually activated. AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]], [[1]], [], [[:2: error: %define variable 'parse.lac.es-capacity-initial' is not used ]]) AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]], [[1]], [], [[:2: error: %define variable 'parse.lac.memory-trace' is not used ]]) AT_CLEANUP ## --------------------------------------------- ## ## -Werror is not affected by -Wnone and -Wall. ## ## --------------------------------------------- ## AT_SETUP([[-Werror is not affected by -Wnone and -Wall]]) AT_DATA([[input.y]], [[%% foo-bar: %empty; ]]) # -Werror is not enabled by -Wall or equivalent. AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]], [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc] ]]) AT_BISON_CHECK([[-W input.y]], [[0]], [[]], [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc] ]]) AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]], [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc] ]]) # -Werror is not disabled by -Wnone or equivalent. AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]]) AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]], [[input.y:2.1-7: error: POSIX Yacc forbids dashes in symbol names: foo-bar [-Werror=yacc] ]]) [mv stderr experr] AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]]) 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 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:1.9-18]) AT_TEST([], [-Dapi.prefix=foo -p bar], [:2]) AT_TEST([%name-prefix "bar"], [-Dapi.prefix=foo], [:2]) AT_TEST([%define api.prefix foo], [-p bar], [input.y:1.9-18]) m4_popdef([AT_TEST]) AT_CLEANUP ## -------------- ## ## Stray $ or @. ## ## -------------- ## AT_SETUP([[Stray $ or @]]) # 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 { $%; @%; $$ = $1; }; %% $ @ // Should not warn. ]]) AT_BISON_CHECK([[-Wall input.y]], 0, [], [[input.y:11.19: warning: stray '$' [-Wother] input.y:11.23: warning: stray '@' [-Wother] input.y:12.19: warning: stray '$' [-Wother] input.y:12.23: warning: stray '@' [-Wother] input.y:13.19: warning: stray '$' [-Wother] input.y:13.23: warning: stray '@' [-Wother] input.y:16.19: warning: stray '$' [-Wother] input.y:16.23: warning: stray '@' [-Wother] ]]) AT_CLEANUP ## ---------------- ## ## Code injection. ## ## ---------------- ## AT_SETUP([[Code injection]]) m4_pattern_allow([^m4_errprintn$]) # AT_TEST([MACRO]) # ---------------- # Try to have MACRO be run by bison. m4_pushdef([AT_TEST], [AT_DATA([[input.y]], [[%type <$1(DEAD %type)> exp %token <$1(DEAD %token)> a %token b %initial-action { $$; $<$1(DEAD %initial-action)>$ }; %printer { $$ $<$1(DEAD %printer)>$ } <> <*>; %lex-param { $1(DEAD %lex-param) }; %parse-param { $1(DEAD %parse-param) }; %% exp: a a[name] b { $$; $][1; $<$1(DEAD action 1)>$ $<$1(DEAD action 2)>1 $<$1(DEAD action 3)>name $<$1(DEAD action 4)>0 ; }; ]]) # FIXME: Provide a means to iterate over all the skeletons. AT_BISON_CHECK([[-d input.y]]) AT_BISON_CHECK([[-d -S glr.c input.y]]) AT_BISON_CHECK([[-d -S lalr1.cc input.y]]) AT_BISON_CHECK([[-d -S glr.cc input.y]]) AT_BISON_CHECK([[ -S lalr1.java input.y]]) ]) AT_TEST([m4_errprintn]) AT_TEST([@:>@m4_errprintn]) m4_popdef([AT_TEST]) AT_CLEANUP ##----------------------- ## ## Deprecated directives. ## ## ---------------------- ## AT_SETUP([[Deprecated directives]]) AT_KEYWORDS([[deprec]]) 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 = "foo" %pure_parser %token_table %glr-parser %% exp : '0' ]]) AT_BISON_CHECK([[input.y]], [[0]], [[]], [[input.y:10.1-13: warning: deprecated directive: '%default_prec', use '%default-prec' [-Wdeprecated] input.y:11.1-14: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated] input.y:12.1-10: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated] input.y:13.1-14: warning: deprecated directive: '%file-prefix =', use '%file-prefix' [-Wdeprecated] input.y:14.1-15.2: warning: deprecated directive: '%file-prefix\n =', use '%file-prefix' [-Wdeprecated] input.y:17.1-19: warning: deprecated directive: '%fixed-output_files', use '%fixed-output-files' [-Wdeprecated] input.y:18.1-19: warning: deprecated directive: '%fixed_output-files', use '%fixed-output-files' [-Wdeprecated] input.y:20.1-13: warning: deprecated directive: '%name-prefix=', use '%name-prefix' [-Wdeprecated] input.y:21.1-16: warning: deprecated directive: '%no-default_prec', use '%no-default-prec' [-Wdeprecated] input.y:22.1-16: warning: deprecated directive: '%no_default-prec', use '%no-default-prec' [-Wdeprecated] input.y:23.1-9: warning: deprecated directive: '%no_lines', use '%no-lines' [-Wdeprecated] input.y:24.1-9: warning: deprecated directive: '%output =', use '%output' [-Wdeprecated] input.y:25.1-12: warning: deprecated directive: '%pure_parser', use '%pure-parser' [-Wdeprecated] input.y:26.1-12: warning: deprecated directive: '%token_table', use '%token-table' [-Wdeprecated] ]]) AT_CLEANUP ## ---------------------------- ## ## Unput's effect on locations. ## ## ---------------------------- ## dnl When the scanner detects a deprecated construct, it unputs the correct dnl version, but it should *not* have any impact on the scanner cursor. If it dnl does, the locations of directives on the same line become erroneous. AT_SETUP([[Unput's effect on locations]]) AT_KEYWORDS([[deprec]]) 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: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated] input.y:13.11-21: error: %define variable 'parse.error' redefined input.y:13-6: previous definition input.y:14.16-29: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated] input.y:14.11-21: error: %define variable 'parse.error' redefined input.y:13.11-21: previous definition ]]) AT_CLEANUP ##--------------------------- ## ## Non-deprecated directives. ## ## -------------------------- ## AT_SETUP([[Non-deprecated directives]]) AT_KEYWORDS([[deprec]]) AT_DATA_GRAMMAR([[input.y]], [[ %default-prec %error-verbose %expect-rr 42 %file-prefix "foo" %file-prefix "bar" %fixed-output-files %name-prefix "foo" %no-default-prec %no-lines %output "foo" %pure-parser %token-table %% exp : '0' ]]) AT_BISON_CHECK([[input.y]], [[0]], [[]], [[input.y: warning: %expect-rr applies only to GLR parsers [-Wother] ]]) AT_CLEANUP