diff -u b/includes/common.inc b/includes/common.inc
--- b/includes/common.inc
+++ b/includes/common.inc
@@ -1995,7 +1995,7 @@
     $key = explode('|', $key);
     if ($interval >= $value) {
       $output .= ($output ? ' ' : '') . format_plural(floor($interval / $value), $key[0], $key[1], array(), array('langcode' => $langcode));
-      $interval %= $value;
+      $interval = (int) $interval % $value;
       $granularity--;
     }
 
diff -u b/modules/simpletest/tests/system_test.module b/modules/simpletest/tests/system_test.module
--- b/modules/simpletest/tests/system_test.module
+++ b/modules/simpletest/tests/system_test.module
@@ -567,5 +567,5 @@
     unset($implementations['system_test']);
     $count = count($implementations);
-    $implementations = array_merge(array_slice($implementations, 0, (int) $count / 2, TRUE), array('system_test' => $group), array_slice($implementations, (int) $count / 2, NULL, TRUE));
+    $implementations = array_merge(array_slice($implementations, 0, (int) ($count / 2), TRUE), array('system_test' => $group), array_slice($implementations, (int) ($count / 2), NULL, TRUE));
   }
 }
only in patch2:
unchanged:
--- a/modules/color/color.module
+++ b/modules/color/color.module
@@ -752,7 +752,7 @@ function _color_unpack($hex, $normalize = FALSE) {
 function _color_pack($rgb, $normalize = FALSE) {
   $out = 0;
   foreach ($rgb as $k => $v) {
-    $out |= (($v * ($normalize ? 255 : 1)) << (16 - $k * 8));
+    $out = (int) $out | (($v * ($normalize ? 255 : 1)) << (16 - $k * 8));
   }
 
   return '#' . str_pad(dechex($out), 6, 0, STR_PAD_LEFT);
only in patch2:
unchanged:
--- a/modules/syslog/syslog.module
+++ b/modules/syslog/syslog.module
@@ -111,8 +111,8 @@ function syslog_watchdog(array $log_entry) {
     '!request_uri' => $log_entry['request_uri'],
     '!referer'     => $log_entry['referer'],
     '!uid'         => $log_entry['uid'],
-    '!link'        => strip_tags($log_entry['link']),
-    '!message'     => strip_tags(!isset($log_entry['variables']) ? $log_entry['message'] : strtr($log_entry['message'], $log_entry['variables'])),
+    '!link'        => strip_tags((string) $log_entry['link']),
+    '!message'     => strip_tags((string) (!isset($log_entry['variables']) ? $log_entry['message'] : strtr($log_entry['message'], $log_entry['variables']))),
   ));
 
   syslog($log_entry['severity'], $message);