luaD_pcall
status = luaD_pcall(L, f_call, &c, savestack(L, c.func), func);
status = luaD_pcall(L, f_parser, &p, savestack(L, L->top), L->errfunc);
LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
status = luaD_pcall(L, dothecall, NULL, savestack(L, L->top - 2), 0);