IF                 51 lib/lua/lundump.c  IF (r!=0, "unexpected end");
IF                 65 lib/lua/lundump.c  IF (x<0, "bad integer");
IF                177 lib/lua/lundump.c  IF (!luaG_checkcode(f), "bad code");
IF                189 lib/lua/lundump.c  IF (memcmp(h,s,LUAC_HEADERSIZE)!=0, "bad header");