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

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

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
#

-- 
           Summary: free doesn't free all memory alloced by memalign
           Product: glibc
           Version: 2.9
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: phil dot pratt dot szeliga at gmail dot com
                CC: glibc-bugs at sources dot redhat dot com


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

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