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 */
   void cfree(void *ptr, size_t nelem, size_t elsize);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       Since glibc 2.19:
       Glibc 2.19 and earlier:
           _BSD_SOURCE || _SVID_SOURCE


   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."


   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.


   For  an  explanation  of  the  terms  used   in   this   section,   see

   Interface  Attribute      Value                  
   cfree()    Thread safety  MT-Safe /* In glibc */ 


   The 3-argument version of cfree() as used by SCO conforms to the iBCSe2
   standard: Intel386 Binary Compatibility Specification, Edition 2.




   This page is part of release 4.09 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

                              2016-03-15                          CFREE(3)


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