Bug #76534 [NEW]: PHP hangs on 'illegal string offset on string references with an error handler

From: rowan dot f dot leeder at gmail dot com Operating system: Linux PHP version: 7.2.7 Package: *General Issues Bug Type: Bug Bug description:PHP hangs on 'illegal string offset on string references with an error handler Description: ------------ Using array assignment on a string reference usually causes a fatal 'Illegal string offset' error. PHP hang when a using an error handler that converts errors to exceptions. This only effects invalid array access on references. An illegal array access on a non reference variable causes the exception to be emitted. Test script: --------------- set_error_handler(function ($severity, $message, $file, $line) { throw new \Exception($message); }); $x = "foo"; $y = &$x["bar"]; Expected result: ---------------- PHP Fatal error: Uncaught Exception: Illegal string offset 'bar' in ... -- Edit bug report at https://bugs.php.net/bug.php?id=76534&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76534&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76534&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76534&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76534&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76534&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76534&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76534&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76534&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76534&r=support Expected behavior: https://bugs.php.net/fix.php?id=76534&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76534&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76534&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76534&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76534&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76534&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76534&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76534&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76534&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76534&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76534&r=mysqlcfg