Bug #80781 [NEW]: Error handler that throws ErrorException infinite loop

From: dktapps at pmmp dot io Operating system: Windows 10 PHP version: 7.4.15 Package: Reproducible crash Bug Type: Bug Bug description:Error handler that throws ErrorException infinite loop Description: ------------ This bug seems to be specific to 7.4 and upwards: it doesn't reproduce on 7.3 and below, as seen here: https://3v4l.org/EpP2L The following code results in an infinite loop on Windows and a segmentation fault on Linux. Test script: --------------- <?php declare(strict_types=1); function handle(int $severity, string $message, string $file, int $line) : bool{ if((error_reporting() & $severity) !== 0){ throw new \ErrorException($message, 0, $severity, $file, $line); } return true; //stfu operator } set_error_handler('handle'); function getPlugin(string $plugin) : bool{ return false; } $data = []; $array = []; if(isset($array[$data]) or getPlugin($data)){ } Expected result: ---------------- Something like the following: Fatal error: Uncaught ErrorException: Illegal offset type in isset or empty in /in/EpP2L:19 Stack trace: #0 /in/EpP2L(19): handle(2, 'Illegal offset ...', '/in/EpP2L', 19, Array) #1 {main} thrown in /in/EpP2L on line 19 Actual result: -------------- An infinite loop occurs on Windows. Judging by the exit code on 3v4l, it appears this script causes a segfault on Unix. -- Edit bug report at https://bugs.php.net/bug.php?id=80781&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=80781&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=80781&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=80781&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=80781&r=needscript Try newer version: https://bugs.php.net/fix.php?id=80781&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=80781&r=support Expected behavior: https://bugs.php.net/fix.php?id=80781&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=80781&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=80781&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=80781&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=80781&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=80781&r=dst IIS Stability: https://bugs.php.net/fix.php?id=80781&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=80781&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=80781&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=80781&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=80781&r=mysqlcfg