add test

Author: devnexen

ext/session/session.c

@@ -695,7 +695,7 @@ static PHP_INI_MH(OnUpdateCookieLifetime) /* {{{ */
 	SESSION_CHECK_ACTIVE_STATE;
 	SESSION_CHECK_OUTPUT_STATE;
 
-	const zend_long maxcookie = ZEND_LONG_MAX - (PHP_TIMEOUT_ULL_MAX / 1000000);
+	const zend_long maxcookie = ZEND_LONG_MAX - (zend_long)((double)PHP_TIMEOUT_ULL_MAX / 1000000.0);
 	zend_long v = (zend_long)atol(ZSTR_VAL(new_value));
 	if (v < 0 || v > maxcookie) {
 		php_error_docref(NULL, E_WARNING, "CookieLifetime must be between 0 and " ZEND_LONG_FMT, maxcookie);

ext/session/tests/gh16290.phpt

@@ -0,0 +1,12 @@
+--TEST--
+GH-16290 (overflow on session cookie_lifetime ini)
+--EXTENSIONS--
+session
+--SKIPIF--
+<?php include('skipif.inc'); ?>
+--FILE--
+<?php
+session_set_cookie_params(PHP_INT_MAX, '/', null, false, true);
+?>
+--EXPECTF--
+Warning: session_set_cookie_params(): CookieLifetime must be between 0 and %d in %s on line %d