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<?php interface proxy {} class finalfoo { public function __construct() { if (is_subclass_of($this, __CLASS__, false)) { throw new \Exception('Nein! Class is final!'); } } } class fooproxy extends finalfoo implements proxy { } class naughtyfoo { } new finalfoo; new fooproxy; new naughtyfoo;
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Exception: Nein! Class is final! in /in/SpQ6B:10 Stack trace: #0 /in/SpQ6B(26): finalfoo->__construct() #1 {main} thrown in /in/SpQ6B on line 10
Process exited with code 255.

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