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1b17b01d0f
since multiple impure parsers would corrupt yynerrs. * data/push.c (yypstate_allocated): New static global variable initialized to 0. (yypull_parse): If yypstate_new returns 0, don't report it as memory exhaustion if yypstate_allocated is 1, but still return 2. (yypstate_new): Invoke yyerror and return 0 if yypstate_allocated is already 1. Otherwise, set it to 1. (yypstate_delete): Set it to 0. * tests/push.at (Push Parsing: Multiple impure instances): New test case.
153 lines
3.3 KiB
Plaintext
153 lines
3.3 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 3 of the License, or
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# (at your option) any later version.
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#
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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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#
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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, see <http://www.gnu.org/licenses/>.
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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 *ps;
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/* Make sure we don't try to free ps->yyss in this case. */
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ps = yypstate_new ();
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yypstate_delete (ps);
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/* yypstate_delete used to leak ps->yyss if the stack was reallocated but the
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parse did not return on success, syntax error, or memory exhaustion. */
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ps = yypstate_new ();
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assert (yypush_parse (ps, 'a', NULL) == YYPUSH_MORE);
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yypstate_delete (ps);
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ps = yypstate_new ();
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assert (yypush_parse (ps, 'a', NULL) == YYPUSH_MORE);
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assert (yypush_parse (ps, 'b', NULL) == YYPUSH_MORE);
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yypstate_delete (ps);
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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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## ----------------------------------------- ##
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## Push Parsing: Multiple impure instances. ##
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## ----------------------------------------- ##
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AT_SETUP([[Push Parsing: Multiple impure instances]])
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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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void yyerror (char const *msg);
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int yylex (void);
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%}
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%push-pull-parser
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%%
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start: ;
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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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yylex (void)
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{
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return 0;
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}
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int
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main (void)
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{
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yypstate *ps;
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int i;
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for (i = 0; i < 2; ++i)
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{
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ps = yypstate_new ();
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assert (ps);
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assert (yypstate_new () == NULL);
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assert (yyparse () == 2);
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yychar = 0;
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assert (yypush_parse (ps) == 0);
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assert (yypstate_new () == NULL);
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assert (yyparse () == 2);
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yypstate_delete (ps);
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}
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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]], 0, [],
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[[cannot allocate multiple impure push-parser instances
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cannot allocate multiple impure push-parser instances
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cannot allocate multiple impure push-parser instances
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cannot allocate multiple impure push-parser instances
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cannot allocate multiple impure push-parser instances
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cannot allocate multiple impure push-parser instances
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cannot allocate multiple impure push-parser instances
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cannot allocate multiple impure push-parser instances
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]])
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AT_CLEANUP
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