60     api_check(L, idx <= L->ci->top - (ci->func + 1), "unacceptable index");  in index2value()
65     api_check(L, idx != 0 && -idx <= L->top - (ci->func + 1), "invalid index");  in index2value()
72     api_check(L, idx <= MAXUPVAL + 1, "upvalue index too large");  in index2value()
87     api_check(L, o < L->top, "unacceptable index");  in index2stack()
91     api_check(L, idx != 0 && -idx <= L->top - (ci->func + 1), "invalid index");  in index2stack()
92     api_check(L, !ispseudo(idx), "invalid index");  in index2stack()
103   api_check(L, n >= 0, "negative 'n'");  in lua_checkstack()
125   api_check(from, G(from) == G(to), "moving among independent states");  in lua_xmove()
126   api_check(from, to->ci->top - to->top >= n, "stack overflow");  in lua_xmove()
181     api_check(L, idx <= ci->top - (func + 1), "new top too large");  in lua_settop()
187     api_check(L, -(idx+1) <= (L->top - (func + 1)), "invalid new top");  in lua_settop()
222   api_check(L, (n >= 0 ? n : -n) <= (t - p + 1), "invalid 'n'");  in lua_rotate()
236   api_check(L, isvalid(L, to), "invalid index");  in lua_copy()
268   api_check(L, LUA_TNONE <= t && t < LUA_NUMTYPES, "invalid type");  in lua_typename()
339       default: api_check(L, 0, "invalid option");  in lua_compare()
564     api_check(L, n <= MAXUPVAL, "upvalue index too large");  in lua_pushcclosure()
693   api_check(L, ttistable(t), "table expected");  in gettable()
773   api_check(L, ttisfulluserdata(o), "full userdata expected");  in lua_getiuservalue()
910     api_check(L, ttistable(s2v(L->top - 1)), "table expected");  in lua_setmetatable()
947   api_check(L, ttisfulluserdata(o), "full userdata expected");  in lua_setiuservalue()
967      api_check(L, (nr) == LUA_MULTRET || (L->ci->top - L->top >= (nr) - (na)), \
975   api_check(L, k == NULL || !isLua(L->ci),  in lua_callk()
978   api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread");  in lua_callk()
1016   api_check(L, k == NULL || !isLua(L->ci),  in lua_pcallk()
1019   api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread");  in lua_pcallk()
1025     api_check(L, ttisfunction(s2v(o)), "error handler must be a function");  in lua_pcallk()
1243   api_check(L, L->openupval == NULL || uplevel(L->openupval) <= o,  in lua_toclose()
1314   api_check(L, 0 <= nuvalue && nuvalue < USHRT_MAX, "invalid value");  in lua_newuserdatauv()
1389   api_check(L, ttisLclosure(fi), "Lua function expected");  in getupvalref()
1414       api_check(L, 0, "function expected");  in lua_upvalueid()
1426   api_check(L, *up1 != NULL && *up2 != NULL, "invalid upvalue index");  in lua_upvaluejoin()