mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 11:50:28 +02:00
49114fd43d
This updates Gnulib to v0.0-4889-ge375fe3. * m4/gnulib-cache.m4: Add `accept', `bind', `close', `connect', `getpeername', `getsockname', `getsockopt', `listen', `malloc', `malloca', `recv', `recvfrom', `send', `sendto', `setsockopt', `shutdown', `socket', and `sockets', requested by Jan Nieuwenhuizen <janneke-list@xs4all.nl> for cross-MinGW32 builds. Add `trunc', requested by Mark H Weaver <mhw@netris.org>.
56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/* Memory allocation on the stack.
|
|
|
|
Copyright (C) 1995, 1999, 2001-2004, 2006-2011 Free Software Foundation,
|
|
Inc.
|
|
|
|
This program 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 2, 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
|
|
USA. */
|
|
|
|
/* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
|
|
means there is a real alloca function. */
|
|
#ifndef _GL_ALLOCA_H
|
|
#define _GL_ALLOCA_H
|
|
|
|
/* alloca (N) returns a pointer to N bytes of memory
|
|
allocated on the stack, which will last until the function returns.
|
|
Use of alloca should be avoided:
|
|
- inside arguments of function calls - undefined behaviour,
|
|
- in inline functions - the allocation may actually last until the
|
|
calling function returns,
|
|
- for huge N (say, N >= 65536) - you never know how large (or small)
|
|
the stack is, and when the stack cannot fulfill the memory allocation
|
|
request, the program just crashes.
|
|
*/
|
|
|
|
#ifndef alloca
|
|
# ifdef __GNUC__
|
|
# define alloca __builtin_alloca
|
|
# elif defined _AIX
|
|
# define alloca __alloca
|
|
# elif defined _MSC_VER
|
|
# include <malloc.h>
|
|
# define alloca _alloca
|
|
# elif defined __DECC && defined __VMS
|
|
# define alloca __ALLOCA
|
|
# else
|
|
# include <stddef.h>
|
|
# ifdef __cplusplus
|
|
extern "C"
|
|
# endif
|
|
void *alloca (size_t);
|
|
# endif
|
|
#endif
|
|
|
|
#endif /* _GL_ALLOCA_H */
|