Bug #76011 [NEW]: Sub class should be allowed to change the specificity of return type

From: ramouixn at pokemail dot net Operating system: PHP version: 7.2.2 Package: Scripting Engine problem Bug Type: Bug Bug description:Sub class should be allowed to change the specificity of return type Description: ------------ Greetings, I believe the following should be allowed. class Animal {} class Cat extends Animal {} class My1 { public function getAnimal () : Animal {} } class My2 extends My1 { public function getAnimal () : Cat {} } Because Cat is a Animal and thus compatible with the inherited signature. Thanks in advance. Expected result: ---------------- No errors Actual result: -------------- Compile error -- Edit bug report at https://bugs.php.net/bug.php?id=76011&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76011&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76011&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76011&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76011&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76011&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76011&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76011&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76011&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76011&r=support Expected behavior: https://bugs.php.net/fix.php?id=76011&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76011&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76011&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76011&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76011&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76011&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76011&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76011&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76011&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76011&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76011&r=mysqlcfg