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eb1b07409f
<http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00032.html>. * THANKS: Add Brandon Lucia. * data/push.c (yypstate_delete): Free the stack if it was reallocated but the parse never completed and thus freed it. * tests/Makefile.am (TESTSUITE_AT): Add push.at. * tests/testsuite.at: Include push.at. * test/push.at: New. (Push Parsing: Memory Leak for Early Deletion): New test case.
83 lines
2.1 KiB
Plaintext
83 lines
2.1 KiB
Plaintext
# Checking Push Parsing. -*- Autotest -*-
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# Copyright (C) 2007 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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AT_BANNER([[Push Parsing Tests]])
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## ---------------------------------------------- ##
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## Push Parsing: Memory Leak for Early Deletion. ##
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## ---------------------------------------------- ##
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AT_SETUP([[Push Parsing: Memory Leak for Early Deletion]])
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# Requires Valgrind.
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AT_DATA_GRAMMAR([[input.y]],
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[[
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%{
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#include <assert.h>
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#include <stdio.h>
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#define YYINITDEPTH 1
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void yyerror (char const *msg);
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%}
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%pure-parser %push-parser
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%%
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start: 'a' 'b' 'c' ;
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%%
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void
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yyerror (char const *msg)
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{
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fprintf (stderr, "%s\n", msg);
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}
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int
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main (void)
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{
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yypstate *yyps;
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YYSTYPE yylval;
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/* Make sure we don't try to free yyps->yyss in this case. */
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yyps = yypstate_new ();
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yypstate_delete (yyps);
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/* yypstate_delete used to leak yyps->yyss if the stack was reallocated but
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the parse did not return on success, syntax error, or memory
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exhaustion. */
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yyps = yypstate_new ();
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assert (yypush_parse (yyps, 'a', &yylval) == YYPUSH_MORE);
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yypstate_delete (yyps);
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yyps = yypstate_new ();
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assert (yypush_parse (yyps, 'a', &yylval) == YYPUSH_MORE);
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assert (yypush_parse (yyps, 'b', &yylval) == YYPUSH_MORE);
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yypstate_delete (yyps);
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return 0;
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}
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]])
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AT_CHECK([[bison -o input.c input.y]])
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AT_COMPILE([[input]])
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AT_PARSER_CHECK([[./input]])
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AT_CLEANUP
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