From 22e304a6da04f0878ad286cdfb1b9d4de0ed1ed7 Mon Sep 17 00:00:00 2001 From: Akim Demaille Date: Sun, 2 Mar 2003 11:22:19 +0000 Subject: [PATCH] Write a test the yycheck overrun reported by Andrew Suffield. * tests/regression.at (_AT_DATA_DANCER_Y, AT_CHECK_DANCER): New. Use them to exercise yycheck overrun. Based on Andrew Suffield's grammar. --- ChangeLog | 8 ++++ THANKS | 1 + tests/regression.at | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 143 insertions(+), 1 deletion(-) diff --git a/ChangeLog b/ChangeLog index 4126a95..2b304d3 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,13 @@ 2003-03-02 Akim Demaille + Write a test the yycheck overrun reported by Andrew Suffield. + + * tests/regression.at (_AT_DATA_DANCER_Y, AT_CHECK_DANCER): New. + Use them to exercise yycheck overrun. + Based on Andrew Suffield's grammar. + +2003-03-02 Akim Demaille + Create tests/local.at for Bison generic testing macros. * tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Move to... diff --git a/THANKS b/THANKS index 32a7a8b..4180bd9 100644 --- a/THANKS +++ b/THANKS @@ -6,6 +6,7 @@ Akim Demaille akim@freefriends.org Albert Chin-A-Young china@thewrittenword.com Alexander Belopolsky alexb@rentec.com Andreas Schwab schwab@suse.de +Andrew Suffield asuffield@users.sourceforge.net Arnold Robbins arnold@skeeve.com Art Haas ahaas@neosoft.com Benoit Perrot benoit.perrot@epita.fr diff --git a/tests/regression.at b/tests/regression.at index a9746bc..1d0a5e1 100644 --- a/tests/regression.at +++ b/tests/regression.at @@ -1,5 +1,5 @@ # Bison Regressions. -*- Autotest -*- -# Copyright (C) 2001, 2002 Free Software Foundation, Inc. +# Copyright (C) 2001, 2002, 2003 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 @@ -660,3 +660,136 @@ static const unsigned char yystos[] = ]]) AT_CLEANUP + + +## ------------------------- ## +## yycheck Bound Violation. ## +## ------------------------- ## + + +# _AT_DATA_DANCER_Y(BISON-OPTIONS) +# -------------------------------- +# The following grammar, taken from Andrew Suffield's GPL'd implementation +# of DGMTP, the Dancer Generic Message Transport Protocol, used to violate +# yycheck's bounds where issuing a verbose error message. Keep this test +# so that possible bound checking compilers could check all the skeletons. +m4_define([_AT_DATA_DANCER_Y], +[AT_DATA_GRAMMAR([dancer.y], +[%{ +AT_LALR1_CC_IF( +[static int yylex (int *lval);], +[#include +static void yyerror (const char *s); +static int yylex ();]) +%} +$1 +%token ARROW INVALID NUMBER STRING DATA +%defines +%verbose +%error-verbose +/* Grammar follows */ +%% +line: header body + ; + +header: '<' from ARROW to '>' type ':' + | '<' ARROW to '>' type ':' + | ARROW to type ':' + | type ':' + | '<' '>' + ; + +from: DATA + | STRING + | INVALID + ; + +to: DATA + | STRING + | INVALID + ; + +type: DATA + | STRING + | INVALID + ; + +body: /* empty */ + | body member + ; + +member: STRING + | DATA + | '+' NUMBER + | '-' NUMBER + | NUMBER + | INVALID + ; +%% +AT_LALR1_CC_IF( +[/* Currently, print_ is required in C++. */ +void +yy::Parser::print_ () +{ +} + +/* A C++ error reporting function. */ +void +yy::Parser::error_ () +{ + std::cerr << message << std::endl; +} + +int +yyparse (void) +{ + yy::Parser parser (!!YYDEBUG); + return parser.parse (); +} +], +[static void +yyerror (const char *s) +{ + fprintf (stderr, "%s\n", s); +}]) + +static int +yylex (AT_LALR1_CC_IF([int *lval])) +[{ + static int toknum = 0; + int tokens[] = + { + ':', -1 + }; + return tokens[toknum++]; +}] + +int +main (void) +{ + return yyparse (); +} +]) +])# _AT_DATA_DANCER_Y + + +# AT_CHECK_DANCER(BISON-OPTIONS) +# ------------------------------ +# Generate the grammar, compile it, run it. +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_COMPILE_CXX([dancer])], + [AT_COMPILE([dancer])]) +AT_PARSER_CHECK([./dancer], 1, [], +[syntax error, unexpected ':', expecting ARROW or INVALID or DATA or '<' +]) +AT_BISON_OPTION_POPDEFS +AT_CLEANUP +]) + +AT_CHECK_DANCER() +AT_CHECK_DANCER([%glr-parser]) +AT_CHECK_DANCER([%skeleton "lalr1.cc"]) -- 2.7.4