Newrelic causes error handlers loop to get stuck, tests run out of memory

[Jan Fejtek]

Q	A
PHPUnit version	11.1.0
PHP version	8.2
Installation Method	Composer

Summary

Library does not work on php with newrelic extension

Current behavior

When running test with php that contains newrelic extension, we get out of memory error. Loop here gets stuck

phpunit/src/Framework/TestCase.php

Lines 1901 to 1922 in cef82dc

 private function getActiveErrorHandlers(): array 
 { 
     $res = []; 
  
     while (true) { 
         $previousHandler = set_error_handler(static fn () => false); 
         restore_error_handler(); 
  
         if ($previousHandler === null) { 
             break; 
         } 
         $res[] = $previousHandler; 
         restore_error_handler(); 
     } 
     $res = array_reverse($res); 
  
     foreach ($res as $handler) { 
         set_error_handler($handler); 
     } 
  
     return $res; 
 } 

How to reproduce

Expected behavior

There was similar issue in Symfony - symfony/symfony#25774 . Used fix is here https://github.com/symfony/symfony/pull/25755/files

[Sebastian Bergmann]

Thank you for your report.

Please provide a minimal, self-contained, reproducing test case that shows the problem you are reporting.

Without such a minimal, self-contained, reproducing test case I will not be able to investigate this issue.

[Sebastian Bergmann]

@mvorisek What do you think?

[Michael Voříšek]

OP needs to provide minimal repro.

(also note the mentioned Symfony issue is from 2018, ie. quite unreleated)