From 7740e89de3e1bc0cc636120e3ca8ab9e97e4d3cc Mon Sep 17 00:00:00 2001 From: donncha Date: Fri, 4 Apr 2008 16:44:15 +0000 Subject: Merged with WordPress 2.5, unstable, only for testing git-svn-id: http://svn.automattic.com/wordpress-mu/trunk@1218 7be80a69-a1ef-0310-a953-fb0f7c49ff36 --- wp-admin/includes/class-pclzip.php | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'wp-admin/includes/class-pclzip.php') diff --git a/wp-admin/includes/class-pclzip.php b/wp-admin/includes/class-pclzip.php index d387f00..b490744 100644 --- a/wp-admin/includes/class-pclzip.php +++ b/wp-admin/includes/class-pclzip.php @@ -4470,7 +4470,9 @@ $v_byte = @fread($this->zip_fd, 1); // ----- Add the byte - $v_bytes = ($v_bytes << 8) | Ord($v_byte); + // Note we mask the old value down such that once shifted we can never end up with more than a 32bit number + // Otherwise on systems where we have 64bit integers the check below for the magic number will fail. + $v_bytes = ( ($v_bytes & 0xFFFFFF) << 8) | Ord($v_byte); // ----- Compare the bytes if ($v_bytes == 0x504b0506) -- cgit