Bug #75636 [NEW]: php crashes with too many objects

From: benoit dot david at free dot fr Operating system: Docker Version 17.09.0 PHP version: 7.2.0 Package: Reproducible crash Bug Type: Bug Bug description:php crashes with too many objects Description: ------------ The test script below works fine for 10 iterations but crashes (Segmentation fault) for 400000 iterations while it shouldn't crash. Uses Php 7.2 on docker (Version 17.09.0-ce-mac35 (19611)) with no extension. Test script: --------------- <?php class Lim { public $id; public $inv; public $fi; function __construct($id) { $this->id = $id; $this->inv = new Inv($this); } }; class Inv { public $inv; public $fi; function __construct($inv) { $this->inv = $inv; } } $max = 400000; //$max = 10; $lim0 = new Lim(0); $limp = $lim0; for ($i=1; $i<$max; $i++) { $lim = new Lim($i); $lim->fi = $limp->inv; $limp->inv->fi = $lim; $limp = $lim; } Expected result: ---------------- The above script should not crash for 400000 iterations. Actual result: -------------- The above script crashes for 400000 iterations. -- Edit bug report at https://bugs.php.net/bug.php?id=75636&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75636&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75636&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75636&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75636&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75636&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75636&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75636&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75636&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75636&r=support Expected behavior: https://bugs.php.net/fix.php?id=75636&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75636&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75636&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75636&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75636&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75636&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75636&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75636&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75636&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75636&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75636&r=mysqlcfg