int phar_free_alias(phar_archive_data *phar, char *alias, int alias_len TSRMLS_DC) /* {{{ */
{
	if (phar->refcount || phar->is_persistent) {
		return FAILURE;
	}

	/* this archive has no open references, so emit an E_STRICT and remove it */
	if (zend_hash_del(&(PHAR_GLOBALS->phar_fname_map), phar->fname, phar->fname_len) != SUCCESS) {
		return FAILURE;
	}

	/* invalidate phar cache */
	PHAR_G(last_phar) = NULL;
	PHAR_G(last_phar_name) = PHAR_G(last_alias) = NULL;

	return SUCCESS;
}
/* }}} */

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.