#36153 [NEW]: preg_match parse errors with correct expressions

From: a dot steponavicius at gmail dot com Operating system: Windows XP PHP version: 4.4.2 PHP Bug Type: *Regular Expressions Bug description: preg_match parse errors with correct expressions Description: ------------ preg_match returns errors while parsing some correct expressions, o dies with apache if there is more such "errors"... The same behaviour is both in 4.4.2 and 5.1.2 Reproduce code: --------------- $expressions = array( 1 => '/^ (?: . ){0,6} $/ix', 2 => '/^ (?: . ){0, 6} $/ix', 3 => '/^ (?: . ) {0, 6} $/ix', 4 => '/^ (?: . ) {0,6} $/ix', ); foreach ($expressions as $key => $exp) { echo $key, ": "; var_dump(preg_match($exp, '2', $pat)); var_dump($pat); echo "\n"; } Expected result: ---------------- 1: int(1) array(1) { [0]=> string(1) "2" } 2: int(1) array(1) { [0]=> string(1) "2" } 3: int(1) array(1) { [0]=> string(1) "2" } 4: int(1) array(1) { [0]=> string(1) "2" } Actual result: -------------- 1: int(1) array(1) { [0]=> string(1) "2" } 2: int(0) array(0) { } 3: int(0) array(0) { } 4: Warning: preg_match(): Compilation failed: internal error: code overflow at offs et 17 in D:\Inetpub\Projects\.php5\testrx.php on line 12 bool(false) array(0) { } ... or sometimes there is no 4: ... and apache dies... -- Edit bug report at http://bugs.php.net/?id=36153&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=36153&r=trysnapshot44 Try a CVS snapshot (PHP 5.1): http://bugs.php.net/fix.php?id=36153&r=trysnapshot51 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=36153&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=36153&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=36153&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=36153&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=36153&r=needscript Try newer version: http://bugs.php.net/fix.php?id=36153&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=36153&r=support Expected behavior: http://bugs.php.net/fix.php?id=36153&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=36153&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=36153&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=36153&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36153&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=36153&r=dst IIS Stability: http://bugs.php.net/fix.php?id=36153&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=36153&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=36153&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=36153&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=36153&r=mysqlcfg