static int resume_error ( lua_State * L , const char * msg ) {
 L -> top = L -> ci -> base ;
 setsvalue2s ( L , L -> top , luaS_new ( L , msg ) ) ;
 incr_top ( L ) ;
 lua_unlock ( L ) ;
 return LUA_ERRRUN ;
 }
static int resume_error ( lua_State * L , const char * msg ) {
 L -> top = L -> ci -> base ;
 setsvalue2s ( L , L -> top , luaS_new ( L , msg ) ) ;
 incr_top ( L ) ;
 lua_unlock ( L ) ;
 return LUA_ERRRUN ;
 }