[Bug libc/10756] free doesn't free all memory alloced by memalign

["phil dot pratt dot szeliga at gmail dot com" <sourceware-bugzilla@sourceware.org>]

------- Additional Comments From phil dot pratt dot szeliga at gmail dot com  2009-10-11 15:04 -------
(In reply to comment #0)

Oops.  the main line should be "int main(int argc, char * argv)" as usual.
This code originally came from the Cell BE Processor.

> free doesn't free all memory alloced by memalign.  This is causing my
> program to run out of memory, even though I am freeing old memory.
> This bug exists in newlib too.
> 
> code example:
> =======================================
> #include <malloc.h>
> #include <stdio.h>
> 
> static void printMemUsage()
> {
>  struct mallinfo mi;
>  mi = mallinfo();
>  printf("MemUsage: %d\n", mi.arena);
> }
> 
> int main(unsigned long long spe_id, unsigned long long
> program_data_ea, unsigned long long env)
> {
>  printMemUsage();
>  void * dyn_mem = memalign(16, 65535);
>  printMemUsage();
>  free(dyn_mem);
>  printMemUsage();
>  return 0;
> }
> =====================================
> compile with:
> gcc main.c
> =====================================
> run:
> #./a.out
> MemUsage: 0
> MemUsage: 200704
> MemUsage: 135168
> #



-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=10756

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