Bug #67128 [NEW]: class_alias is broken with abstract classes

From: mail at adrianlang dot de Operating system: PHP version: 5.5.11 Package: Class/Object related Bug Type: Bug Bug description:class_alias is broken with abstract classes Description: ------------ While verifying the signature of a class against the signature of an abstract class it extends, apparently class aliases are not correctly taken into account. This works if the class implements an interface or extends a non-abstract class. See also https://github.com/facebook/hhvm/issues/2527. Test script: --------------- class A {} class_alias( 'A', 'B' ); abstract class UserOfA { abstract public function someMethod( B $a ); } class ActualUserOfA extends UserOfA { public function someMethod( A $a ) { } } Actual result: -------------- PHP Fatal error: Declaration of ActualUserOfA::someMethod() must be compatible with UserOfA::someMethod(B $a) -- Edit bug report at https://bugs.php.net/bug.php?id=67128&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=67128&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=67128&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=67128&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=67128&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=67128&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=67128&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=67128&r=needscript Try newer version: https://bugs.php.net/fix.php?id=67128&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=67128&r=support Expected behavior: https://bugs.php.net/fix.php?id=67128&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=67128&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=67128&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=67128&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=67128&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=67128&r=dst IIS Stability: https://bugs.php.net/fix.php?id=67128&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=67128&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=67128&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=67128&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=67128&r=mysqlcfg