#38000 [NEW]: preg_match fails if strlen >= 1630

From: dave at smartboy dot com Operating system: Windows XP PHP version: 5.1.4 PHP Bug Type: PCRE related Bug description: preg_match fails if strlen >= 1630 Description: ------------ preg_match() with regexp to test for valid UTF-8 sequence - fails and causes the error message: 'Could not open input file: <name of script>.php' IF the subject string passed to preg_match() is longer than 1629 characters. (Or in this case the size of the file 'zzz' which contains ASCII) There was no such limitation in preg_match() in the previous version of PHP (5.1.2) Reproduce code: --------------- $str = file_get_contents('zzz'); echo "Loaded file...\n"; $result = preg_match('/^([\x00-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|' . '[\xe1-\xec][\x80-\xbf]{2}|\xed[\x80-\x9f][\x80-\xbf]|[\xee-\xef][\x80-\xbf]{2}|' . '\xf0[\x90-\xbf][\x80-\xbf]{2}|[\xf1-\xf3][\x80-\xbf]{3}|\xf4[\x80-\x8f][\x80-\xbf]{2})*$/S', $str) === 1; echo "Back from preg_match()\n"; var_export($result); echo "\n"; Expected result: ---------------- Loaded file... Back from preg_match() true Actual result: -------------- Loaded file... Could not open input file: u8.php -- Edit bug report at http://bugs.php.net/?id=38000&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=38000&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=38000&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=38000&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=38000&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=38000&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=38000&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=38000&r=needscript Try newer version: http://bugs.php.net/fix.php?id=38000&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=38000&r=support Expected behavior: http://bugs.php.net/fix.php?id=38000&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=38000&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=38000&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=38000&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38000&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=38000&r=dst IIS Stability: http://bugs.php.net/fix.php?id=38000&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=38000&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=38000&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=38000&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=38000&r=mysqlcfg