view lwlib/lw_stringlist.h @ 577:e49d24f4a9a5

Correct bug in the object file output code leading to stack corruption It turns out leaving a pointer to a stack allocated temporary in a persistent data structure is not conducive to correct program operation. Undo the export check setup in the object file output sequence so a pointer to stack allocated memory is not left hanging when the function returns. This seems to correct at least one mysterious crash bug, and possibly others. Thanks to Boisy Pitre for reporting the crash bug that led to this discovery, as well as a previous crash bug that likely has the same root cause. Additional thanks to Ciaran Anscomb whose debugger wielding wizardry revealed the exact location of this particular bit of unbrilliance.
author William Astle <lost@l-w.ca>
date Sat, 03 Aug 2024 14:30:06 -0600
parents 8e25147c2aa8
children
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/*
lw_stringlist.h

Copyright © 2010 William Astle

This file is part of LWTOOLS.

LWTOOLS 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 <http://www.gnu.org/licenses/>.
*/

#ifndef ___lw_stringlist_h_seen___
#define ___lw_stringlist_h_seen___


#ifdef ___lw_stringlist_c_seen___

struct lw_stringlist_priv
{
	char **strings;
	int nstrings;
	int cstring;
};
typedef struct lw_stringlist_priv * lw_stringlist_t;

#else /* def ___lw_stringlist_c_seen___ */

typedef void * lw_stringlist_t;
lw_stringlist_t lw_stringlist_create(void);
void lw_stringlist_destroy(lw_stringlist_t S);
void lw_stringlist_addstring(lw_stringlist_t S, char *str);
void lw_stringlist_reset(lw_stringlist_t S);
char *lw_stringlist_current(lw_stringlist_t S);
char *lw_stringlist_next(lw_stringlist_t S);
int lw_stringlist_nstrings(lw_stringlist_t S);
lw_stringlist_t lw_stringlist_copy(lw_stringlist_t S);

#endif /* def ___lw_stringlist_c_seen___ */

#endif /* ___lw_stringlist_h_seen___ */