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SCO TCP/IP runtime System for SCO Unix
07-22-2002
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CFREE(3) Linux Programmer's Manual CFREE(3) 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); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): cfree(): _BSD_SOURCE || _SVID_SOURCE 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 argu- ments 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. CONFORMING TO
The 3-argument version of cfree() as used by SCO conforms to the iBCSe2 standard: Intel386 Binary Compatibility Specification, Edition 2. SEE ALSO
malloc(3) COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2007-07-26 CFREE(3)