Bug #55000 [NEW]: instanceof should fail compile-time if checking for non existant class

From: Operating system: Linux PHP version: 5.3.6 Package: Scripting Engine problem Bug Type: Bug Bug description:instanceof should fail compile-time if checking for non existant class Description: ------------ If the use clause is missing (class/interface not found in current namespace) trigger some fatal error. This would catch many errors when the use clause is just forgotten by developer. I would understand the current behavior for those cases: 1) $a instanceof $b 2) $a instanceof 'BarClass' (not supported currently afaik) Test script: --------------- <?php namespace Test; // use FooNamespace\BarClass; $a = new \stdClass(); var_dump($a instanceof BarClass); Expected result: ---------------- Fatal error or at least some Exception. Actual result: -------------- bool(false) -- Edit bug report at http://bugs.php.net/bug.php?id=55000&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=55000&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=55000&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=55000&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=55000&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=55000&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=55000&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=55000&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=55000&r=needscript Try newer version: http://bugs.php.net/fix.php?id=55000&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=55000&r=support Expected behavior: http://bugs.php.net/fix.php?id=55000&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=55000&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=55000&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=55000&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=55000&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=55000&r=dst IIS Stability: http://bugs.php.net/fix.php?id=55000&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=55000&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=55000&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=55000&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=55000&r=mysqlcfg