overhead_for     4178 oshmem/mca/memheap/ptmalloc/malloc.c         size_t oc = oldsize - overhead_for(oldp);
overhead_for     4757 oshmem/mca/memheap/ptmalloc/malloc.c       return chunksize(p) - overhead_for(p);
overhead_for     5209 oshmem/mca/memheap/ptmalloc/malloc.c       return chunksize(p) - overhead_for(p);