for (i = 1; i < map->n; ++i)
map->p[0] = isl_basic_map_align_divs(map->p[0], map->p[i]);
- for (i = 1; i < map->n; ++i)
+ for (i = 1; i < map->n; ++i) {
map->p[i] = isl_basic_map_align_divs(map->p[i], map->p[0]);
+ if (!map->p[i])
+ return isl_map_free(map);
+ }
ISL_F_CLR(map, ISL_MAP_NORMALIZED);
return map;