mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 11:50:28 +02:00
7c4a645698
* libguile/stackchk.h (SCM_STACK_OVERFLOW_P): Fix a potential overflow, depending on the absolute values of the thread base and the stack limit. Thanks to Ivan Shcherbakov for the report.
71 lines
2 KiB
C
71 lines
2 KiB
C
/* classes: h_files */
|
||
|
||
#ifndef SCM_STACKCHK_H
|
||
#define SCM_STACKCHK_H
|
||
|
||
/* Copyright (C) 1995,1996,1998,2000, 2003, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public License
|
||
* as published by the Free Software Foundation; either version 3 of
|
||
* the License, or (at your option) any later version.
|
||
*
|
||
* This library 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
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library; if not, write to the Free Software
|
||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||
* 02110-1301 USA
|
||
*/
|
||
|
||
|
||
|
||
#include "libguile/__scm.h"
|
||
|
||
#include "libguile/continuations.h"
|
||
#include "libguile/debug.h"
|
||
|
||
|
||
|
||
/* With debug options we have the possibility to disable stack checking.
|
||
*/
|
||
#define SCM_STACK_CHECKING_P SCM_STACK_LIMIT
|
||
|
||
#if defined BUILDING_LIBGUILE && defined STACK_CHECKING
|
||
# if SCM_STACK_GROWS_UP
|
||
# define SCM_STACK_OVERFLOW_P(s)\
|
||
((SCM_STACK_PTR (s) - SCM_I_CURRENT_THREAD->base) > SCM_STACK_LIMIT)
|
||
# else
|
||
# define SCM_STACK_OVERFLOW_P(s)\
|
||
((SCM_I_CURRENT_THREAD->base - SCM_STACK_PTR (s)) > SCM_STACK_LIMIT)
|
||
# endif
|
||
# define SCM_CHECK_STACK\
|
||
{\
|
||
SCM_STACKITEM stack;\
|
||
if (SCM_STACK_OVERFLOW_P (&stack) && scm_stack_checking_enabled_p)\
|
||
scm_report_stack_overflow ();\
|
||
}
|
||
#else
|
||
# define SCM_CHECK_STACK /**/
|
||
#endif
|
||
|
||
SCM_API int scm_stack_checking_enabled_p;
|
||
|
||
|
||
|
||
SCM_API void scm_report_stack_overflow (void);
|
||
SCM_API long scm_stack_size (SCM_STACKITEM *start);
|
||
SCM_API void scm_stack_report (void);
|
||
SCM_API SCM scm_sys_get_stack_size (void);
|
||
SCM_INTERNAL void scm_init_stackchk (void);
|
||
|
||
#endif /* SCM_STACKCHK_H */
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|