mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
82 lines
2.8 KiB
Groff
82 lines
2.8 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)alloca.3 8.1 (Berkeley) 6/4/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd June 4, 1993
|
|
.Dt ALLOCA 3
|
|
.Os BSD 4
|
|
.Sh NAME
|
|
.Nm alloca
|
|
.Nd memory allocator
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.Fd #include <stdlib.h>
|
|
.Ft void *
|
|
.Fn alloca "size_t size"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn alloca
|
|
function
|
|
allocates
|
|
.Fa size
|
|
bytes of space in the stack frame of the caller.
|
|
This temporary space is automatically freed on
|
|
return.
|
|
.Sh RETURN VALUES
|
|
The
|
|
.Fn alloca
|
|
function returns a pointer to the beginning of the allocated space.
|
|
If the allocation failed, a
|
|
.Dv NULL
|
|
pointer is returned.
|
|
.Sh SEE ALSO
|
|
.Xr brk 2 ,
|
|
.Xr calloc 3 ,
|
|
.Xr getpagesize 3 ,
|
|
.Xr malloc 3 ,
|
|
.Xr realloc 3
|
|
.Sh BUGS
|
|
The
|
|
.Fn alloca
|
|
function
|
|
is machine dependent; its use is discouraged.
|
|
.\" .Sh HISTORY
|
|
.\" The
|
|
.\" .Fn alloca
|
|
.\" function appeared in
|
|
.\" .Bx ?? .
|
|
.\" The function appeared in 32v, pwb and pwb.2 and in 3bsd 4bsd
|
|
.\" The first man page (or link to a man page that I can find at the
|
|
.\" moment is 4.3...
|