#36463 [NEW]: is_utf8 reliably crashes on text input

From: sthapa at site5 dot com Operating system: Linux PHP version: 5.1.2 PHP Bug Type: Strings related Bug description: is_utf8 reliably crashes on text input Description: ------------ is_utf8() crashes on text Reproduce code: --------------- <?php echo "Start Test, the data follows.<br><br>\n"; if ($fp = fopen("text.txt", "r")) { $contents = fread($fp, filesize("text.txt")); echo "$contents"; fclose($fp); } echo "\n<br><br>The data is about to be passed to preg_match(). If you do not see the word 'Success' after this line, the program has crashed.<br>\n"; $truefalsetest=preg_match('%^(?: [\x09\x0A\x0D\x20-\x7E] # ASCII | [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte | \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte | \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3 | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15 | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16 )*$%xs', $contents); echo "Success. Return value of preg_match() = $truefalsetest."; ?> Expected result: ---------------- Output with the success message. Error appears when using either php 5.1.1 or php 4.4.2 both using suExec. Testing this on freebsd systems don't cause the crash and do work correctly. Actual result: -------------- Core file and output doesn't have the success message. root@xxx [/user/dir]# gdb php5.bin core.11662 GNU gdb Red Hat Linux (6.3.0.0-1.63rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-redhat-linux-gnu"...php5.bin: No such file or directory. Core was generated by `php5.bin'. Program terminated with signal 11, Segmentation fault. #0 0x080a5c4c in ?? () (gdb) bt #0 0x080a5c4c in ?? () Error accessing memory address 0xbf523ef0: No such file or directory. -- Edit bug report at http://bugs.php.net/?id=36463&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=36463&r=trysnapshot44 Try a CVS snapshot (PHP 5.1): http://bugs.php.net/fix.php?id=36463&r=trysnapshot51 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=36463&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=36463&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=36463&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=36463&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=36463&r=needscript Try newer version: http://bugs.php.net/fix.php?id=36463&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=36463&r=support Expected behavior: http://bugs.php.net/fix.php?id=36463&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=36463&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=36463&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=36463&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36463&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=36463&r=dst IIS Stability: http://bugs.php.net/fix.php?id=36463&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=36463&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=36463&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=36463&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=36463&r=mysqlcfg