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<?php // defined before the parent class : no error class y extends x {} abstract class x { abstract function foo(); } // defined after the parent class : error class y2 extends x {} ?>
Output for git.master_jit, git.master
Fatal error: Class y2 contains 1 abstract method and must therefore be declared abstract or implement the remaining method (x::foo) in /in/mUEsK on line 11 Stack trace: #0 {main}
Process exited with code 255.

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