Bug #79743 [NEW]: Fatal error when assigning to array property with JIT enabled

From: theodorejb Operating system: Windows 10 x64 build 2004 PHP version: 8.0.0alpha1 Package: opcache Bug Type: Bug Bug description:Fatal error when assigning to array property with JIT enabled Description: ------------ Running php-8.0.0alpha1-nts-Win32-vs16-x64 JIT settings: opcache.jit_buffer_size=200000000 opcache.jit=1235 When an array contains a bunch of objects with a typed array property, and the objects are looped over and a value is assigned to a non-consecutive key in the typed array property, a fatal error occurs after a few iterations. Note: I wasn't able to reproduce the error if the array contains 30 or fewer objects. It only seems to occur when there are at least 31 objects, and the more objects are in the array the fewer iterations are successful before the error occurs. Test script: --------------- <?php class Foo { public array $things = []; } $objects = []; for ($i = 0; $i < 70; $i++) { $objects[] = new Foo(); } foreach ($objects as $key => $class) { echo $key . '<br/>'; $class->things[1] = true; } Actual result: -------------- Fatal error: Uncaught TypeError: Cannot auto-initialize an array inside property Foo::$things of type array in test.php:16 Stack trace: #0 {main} thrown in test.php on line 16 -- Edit bug report at https://bugs.php.net/bug.php?id=79743&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79743&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79743&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79743&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79743&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79743&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79743&r=support Expected behavior: https://bugs.php.net/fix.php?id=79743&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79743&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79743&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79743&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79743&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79743&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79743&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79743&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79743&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79743&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79743&r=mysqlcfg