msegmentptr ss = (msegmentptr)(chunk2mem(sp));
mchunkptr tnext = chunk_plus_offset(sp, ssize);
mchunkptr p = tnext;
msegmentptr ss = (msegmentptr)(chunk2mem(sp));
mchunkptr tnext = chunk_plus_offset(sp, ssize);
mchunkptr p = tnext;
/* reset top to new space */
init_top(m, (mchunkptr)tbase, tsize - TOP_FOOT_SIZE);
/* reset top to new space */
init_top(m, (mchunkptr)tbase, tsize - TOP_FOOT_SIZE);