cfree — free allocated memory
#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) ; |
This function should never be used. Use free(3) instead.
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>
.
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."
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.
The 3-argument version of cfree
() as used by SCO conforms to the
iBCSe2 standard: Intel386 Binary Compatibility Specification,
Edition 2.
|