init_top          963 lj_alloc.c       init_top(m, (mchunkptr)tbase, tsize - TOP_FOOT_SIZE);
init_top         1025 lj_alloc.c           init_top(m, m->top, m->topsize + tsize);
init_top         1123 lj_alloc.c     	init_top(m, m->top, m->topsize - released);
init_top         1255 lj_alloc.c         init_top(m, mn, (size_t)((tbase + tsize) - (char *)mn) - TOP_FOOT_SIZE);