view lwar/lwar.h @ 342:12e2453f8417

Fix potential memory access after free in lw_expr_simplify_go() Thanks to Erik Gavriluk (erik@bombfactory.com) for spotting a missing "else" when attempting to resolve a "special" reference. This could have led to access to memory that had already been freed if a "special" resolved to an expression that also referenced the same special (a circular reference). Whether that can actually happen is questionable but the check must have been added for a reason so it follows that it should be done correctly. This also brings the code in line with similar code resolving symbol references which makes a similar check.
author William Astle <lost@l-w.ca>
date Sat, 14 Mar 2015 14:06:13 -0600
parents 2c24602be78f
children 45df37e81741
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/*
lwar.h
Copyright © 2009 William Astle

This file is part of LWAR.

LWAR 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/>.

Contains the main defs used by the linker
*/


#define LWAR_OP_LIST	1
#define LWAR_OP_ADD		2
#define LWAR_OP_REMOVE	3
#define LWAR_OP_CREATE	4
#define LWAR_OP_EXTRACT	5
#define LWAR_OP_REPLACE	6

#ifndef __lwar_h_seen__
#define __lwar_h_seen__

#ifndef __lwar_c_seen__

extern char *archive_file;
extern int debug_level;
extern int operation;
extern int nfiles;
extern char **files;
extern int mergeflag;

//typedef void * ARHANDLE;

#define AR_MODE_RD		1
#define AR_MODE_WR		2
#define AR_MODE_RW		3
#define AR_MODE_CREATE	4


#define __lwar_E__ extern
#else
#define __lwar_E__
#endif // __lwar_c_seen__

__lwar_E__ void add_file_name(char *fn);

//__lwar_E__ ARHANDLE open_archive(char *fn, int mode);

#undef __lwar_E__

#endif //__lwar_h_seen__