_archive_write_data(struct archive *_a, const void *buff, size_t s)
{
	struct archive_write *a = (struct archive_write *)_a;
	const size_t max_write = INT_MAX;

	archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
	    ARCHIVE_STATE_DATA, "archive_write_data");
	/* In particular, this catches attempts to pass negative values. */
	if (s > max_write)
		s = max_write;
	archive_clear_error(&a->archive);
	return ((a->format_write_data)(a, buff, s));
}
Weaknesses in this category are related to improper calculation or conversion of numbers.