Bug #71023 [NEW]: mysqlnd statistic wrap

From: damian dot poole at netregistry dot com dot au Operating system: Debian x86_64 PHP version: 7.0.0 Package: MySQL related Bug Type: Bug Bug description:mysqlnd statistic wrap Description: ------------ Some of the connection statistics for the MySQL native driver (namely active_connections/ active persistent connections) can decrement past zero causing the statistic to wrap around to the max value of the type. The attached patch fixes it for us as it stops the macros which increment/decrement from wrapping around. Test script: --------------- <?php $mysqli = mysqli_init(); $mysqli->real_connect('1.2.3.4'); //non existant server $stats = mysqli_get_client_stats(); var_dump($stats['active_connections']); Expected result: ---------------- Warning: mysqli::real_connect(): (HY000/2002): Connection refused in /websites/ph/php70.damo.id.au/mysql.php on line 3 string(2) "0" --- next run --- Warning: mysqli::real_connect(): (HY000/2002): Connection refused in /websites/ph/php70.damo.id.au/mysql.php on line 3 string(2) "0" Actual result: -------------- Warning: mysqli::real_connect(): (HY000/2002): Connection refused in /websites/ph/php70.damo.id.au/mysql.php on line 3 string(20) "18446744073709551615" --- next run --- Warning: mysqli::real_connect(): (HY000/2002): Connection refused in /websites/ph/php70.damo.id.au/mysql.php on line 3 string(20) "18446744073709551614" -- Edit bug report at https://bugs.php.net/bug.php?id=71023&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71023&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71023&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71023&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71023&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71023&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71023&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71023&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71023&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71023&r=support Expected behavior: https://bugs.php.net/fix.php?id=71023&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71023&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71023&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71023&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71023&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71023&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71023&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71023&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71023&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71023&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71023&r=mysqlcfg