#39459 [NEW]: /(.?)/ bugs on big string

From: dmitrysp at yandex dot ru Operating system: Windows 2000/XP PHP version: 5.2.0 PHP Bug Type: *Regular Expressions Bug description: /(.?)/ bugs on big string Description: ------------ Expression "<table>(.*?)</table>" not work with big text string. On PHP 4 & 5.1.2 - all ok. memory_limit = 128M Reproduce code: --------------- Windows XP, PHP 5.2.0: $buf="A".str_repeat("x",9999997)."B"; // 9 999 997 var_dump(preg_match("!A(.*)B!is", $buf, $ok)); // 1 var_dump(preg_match("!A(.*?)B!is", $buf, $ok)); // 0 $buf="A".str_repeat("x",9999996)."B"; // 9 999 996 var_dump(preg_match("!A(.*)B!is", $buf, $ok)); // 1 var_dump(preg_match("!A(.*?)B!is", $buf, $ok)); // 1 Windows 2000, PHP 5.2.0: $buf="A".str_repeat("x",99997)."B"; // 99 997 var_dump(preg_match("!A(.*)B!is", $buf, $ok)); // 1 var_dump(preg_match("!A(.*?)B!is", $buf, $ok)); // 0 $buf="A".str_repeat("x",99996)."B"; // 99 996 var_dump(preg_match("!A(.*)B!is", $buf, $ok)); // 1 var_dump(preg_match("!A(.*?)B!is", $buf, $ok)); // 1 Windows 2000, PHP 4.4.2: $buf="A".str_repeat("x",9999997)."B"; // 9 999 997 var_dump(preg_match("!A(.*)B!is", $buf, $ok)); // 1 var_dump(preg_match("!A(.*?)B!is", $buf, $ok)); // 0 $buf="A".str_repeat("x",9999996)."B"; // 9 999 996 var_dump(preg_match("!A(.*)B!is", $buf, $ok)); // 1 var_dump(preg_match("!A(.*?)B!is", $buf, $ok)); // 1 Windows 2000, PHP 5.1.2: $buf="A".str_repeat("x",9999997)."B"; // 9 999 997 var_dump(preg_match("!A(.*)B!is", $buf, $ok)); // 1 var_dump(preg_match("!A(.*?)B!is", $buf, $ok)); // 0 $buf="A".str_repeat("x",9999996)."B"; // 9 999 996 var_dump(preg_match("!A(.*)B!is", $buf, $ok)); // 1 var_dump(preg_match("!A(.*?)B!is", $buf, $ok)); // 1 Actual result: -------------- Please up this memory block from 99Kb to <memory_limit> on Windows 2000! -- Edit bug report at http://bugs.php.net/?id=39459&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=39459&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=39459&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=39459&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=39459&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=39459&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=39459&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=39459&r=needscript Try newer version: http://bugs.php.net/fix.php?id=39459&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=39459&r=support Expected behavior: http://bugs.php.net/fix.php?id=39459&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=39459&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=39459&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=39459&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=39459&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=39459&r=dst IIS Stability: http://bugs.php.net/fix.php?id=39459&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=39459&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=39459&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=39459&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=39459&r=mysqlcfg