#40624 [Opn->Fbk]: pcrelib broken with php 4.4.5

ID: 40624 Updated by: tony2001@php.net Reported By: test_junk at hotmail dot it -Status: Open +Status: Feedback Bug Type: PCRE related Operating System: linux 2.4 i386 PHP Version: 4.4.5 Previous Comments: ------------------------------------------------------------------------ [2007-02-28 11:49:42] test_junk at hotmail dot it I downgraded the PCRE lib to the 6.6 release, the one shipped with php 4.4.4 and the problem appears to be resolved. It's indeed a PCRE issue, I hope they will fix it in the future releases. ------------------------------------------------------------------------ [2007-02-28 08:01:11] tony2001@php.net >Is this issue going to be fixed in the next release? We got a workaround for it in PHP5, but we're not going to add it to PHP4, so you have to upgrade your PHP first. This issue (if it's really what it seems to be) is actually not PHP problem, but a well-known PCRE issue. Though, I wouldn't be 100% sure without a test-case. ------------------------------------------------------------------------ [2007-02-28 07:07:52] test_junk at hotmail dot it Is this issue going to be fixed in the next release? Unfortunately it breaks lots of things, including very popular apps. I will try to do my best in finding the responsible php code but I'm not sure it will be possibile. Thanks for your interest in this matter. ------------------------------------------------------------------------ [2007-02-28 00:13:38] tony2001@php.net Yup, it does look like a stack overflow (which is a known issue in PCRE), though we would appreciate a test case anyway. ------------------------------------------------------------------------ [2007-02-27 23:39:19] test_junk at hotmail dot it I couldn't isolate the code yet. However the full backtrace is the following (I ran the same app twice): 1st time: #0 0x081851f2 in match (eptr=0x61737361 <Address 0x61737361 out of bounds>, ecode=0x2c69746c <Address 0x2c69746c out of bounds>, offset_top=1919250464, md=0x7474656d, ims=1868852837, eptrb=0x736f6320, flags=1629531331, rdepth=1702192160) at /sources/php/php-4.4.6/ext/pcre/pcrelib/pcre_exec.c:2209 #1 0x00000000 in ?? () 2nd time: #0 0x0818257f in match (eptr=0x61737361 <Address 0x61737361 out of bounds>, ecode=0x2c69746c <Address 0x2c69746c out of bounds>, offset_top=1919250464, md=0x7474656d, ims=1868852837, eptrb=0x736f6320, flags=1629531331, rdepth=1702192160) at /sources/php/php-4.4.6/ext/pcre/pcrelib/pcre_exec.c:1071 Cannot access memory at address 0xbf7ffff0 ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/40624 -- Edit this bug report at http://bugs.php.net/?id=40624&edit=1