RA                418 lib/lua/lvm.c      ra = RA(i);
RA                554 lib/lua/lvm.c          setobjs2s(L, RA(i), base+b);
RA                705 lib/lua/lvm.c          cb = RA(i) + 3;  /* previous call may change the stack */
RA                766 lib/lua/lvm.c            ra = RA(i);  /* previous call may change the stack */