Bug #72711 [NEW]: `mb_ereg` does not clear the `$regs` parameter on failure

From: ju1ius at laposte dot net Operating system: Debian Sid PHP version: 5.6.24 Package: mbstring related Bug Type: Bug Bug description:mb_ereg does not clear the $regs parameter on failure Description: ------------ When mb_ereg does not match, it does not empty the $regs array parameters. Test script: --------------- <?php var_dump(mb_ereg('(a)\1', 'aa', $m)); var_dump($m); var_dump(mb_ereg('(a)\1', 'ab', $m)); var_dump($m); var_dump(mb_ereg('(foo)\1', 'foofoo', $m)); var_dump($m); Expected result: ---------------- int(2) array(2) { [0]=> string(2) "aa" [1]=> string(1) "a" } bool(false) array(0) {} int(6) array(2) { [0]=> string(6) "foofoo" [1]=> string(3) "foo" } Actual result: -------------- int(2) array(2) { [0]=> string(2) "aa" [1]=> string(1) "a" } bool(false) array(2) { [0]=> string(2) "aa" [1]=> string(1) "a" } int(6) array(2) { [0]=> string(6) "foofoo" [1]=> string(3) "foo" } -- Edit bug report at https://bugs.php.net/bug.php?id=72711&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72711&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72711&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72711&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=72711&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=72711&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=72711&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=72711&r=needscript Try newer version: https://bugs.php.net/fix.php?id=72711&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=72711&r=support Expected behavior: https://bugs.php.net/fix.php?id=72711&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=72711&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=72711&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=72711&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72711&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=72711&r=dst IIS Stability: https://bugs.php.net/fix.php?id=72711&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=72711&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=72711&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=72711&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=72711&r=mysqlcfg