static int rev_same_tree_as_empty(struct rev_info *revs, struct commit *commit)
{
	int retval;
	struct tree *t1 = commit->tree;

	if (!t1)
		return 0;

	tree_difference = REV_TREE_SAME;
	DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES);
	retval = diff_tree_sha1(NULL, t1->object.sha1, "", &revs->pruning);

	return retval >= 0 && (tree_difference == REV_TREE_SAME);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.