newtop           4152 oshmem/mca/memheap/ptmalloc/malloc.c         mchunkptr newtop = chunk_plus_offset(oldp, nb);
newtop           4154 oshmem/mca/memheap/ptmalloc/malloc.c         newtop->head = newtopsize |PINUSE_BIT;
newtop           4155 oshmem/mca/memheap/ptmalloc/malloc.c         m->top = newtop;