Name
cfree — free allocated memory
Synopsis
#include <stdlib.h> /* In SunOS 4 */
int
cfree( |
void *ptr); |
/* In glibc or FreeBSD libcompat */
void
cfree( |
void *ptr); |
/* In SCO OpenServer */
void
cfree( |
char *ptr, |
| unsigned num, | |
unsigned size); |
/* In Solaris watchmalloc.so.1 */
void
cfree( |
void *ptr, |
| size_t nelem, | |
size_t elsize); |
![[Note]](../stylesheet/note.png) |
Note | ||||
|---|---|---|---|---|---|
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DESCRIPTION
This function should never be used. Use free(3) instead.
1-arg cfree
In glibc, the function cfree() is a synonym for free(3), "added for
compatibility with SunOS".
Other systems have other functions with this name. The
declaration is sometimes in <stdlib.h>
and sometimes in <malloc.h>
3-arg cfree
Some SCO and Solaris versions have malloc libraries with
a 3-argument cfree(),
apparently as an analog to calloc(3).
If you need it while porting something, add
#define cfree(p, n, s) free((p))
to your file.
A frequently asked question is "Can I use free(3) to free memory
allocated with calloc(3), or do I need
cfree()?" Answer: use
free(3).
An SCO manual writes: "The cfree routine is provided for compliance to the iBCSe2 standard and simply calls free. The num and size arguments to cfree are not used."
RETURN VALUE
The SunOS version of cfree()
(which is a synonym for free(3)) returns 1 on
success and 0 on failure. In case of error, errno is set to EINVAL: the value of ptr was not a pointer to a
block previously allocated by one of the routines in the
malloc(3) family.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
cfree() |
Thread safety | MT-Safe /* In glibc */ |
CONFORMING TO
The 3-argument version of cfree() as used by SCO conforms to the
iBCSe2 standard: Intel386 Binary Compatibility Specification,
Edition 2.
COLOPHON
This page is part of release 4.07 of the Linux man-pages project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man−pages/.
|
Copyright (c) 2003 Andries Brouwer (aebcwi.nl) %%%LICENSE_START(GPLv2+_DOC_FULL) This is free documentation; 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 2 of the License, or (at your option) any later version. The GNU General Public License's references to "object code" and "executables" are to be interpreted as the output of any document formatting or typesetting system, including intermediate and printed output. This manual 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 manual; if not, see <http://www.gnu.org/licenses/>. %%%LICENSE_END |