- for (i = 0; i < nr_objects; ++i)
- sorted_by_sha[i] = &objects[i];
- qsort(sorted_by_sha, nr_objects, sizeof(sorted_by_sha[0]),
- sha1_compare);
+ if (nr_objects) {
+ sorted_by_sha =
+ xcalloc(nr_objects, sizeof(struct object_entry *));
+ list = sorted_by_sha;
+ last = sorted_by_sha + nr_objects;
+ for (i = 0; i < nr_objects; ++i)
+ sorted_by_sha[i] = &objects[i];
+ qsort(sorted_by_sha, nr_objects, sizeof(sorted_by_sha[0]),
+ sha1_compare);
+
+ }
+ else
+ sorted_by_sha = list = last = NULL;