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<?php interface Exp { public function x();} class First implements Exp { public function x() {} } class Second {} function x(Exp $e){ echo get_class($e)."\n"; } x(new First); x(new Second); ?>
Output for git.master, git.master_jit, rfc.property-hooks
First Fatal error: Uncaught TypeError: x(): Argument #1 ($e) must be of type Exp, Second given, called in /in/qZU6F on line 11 and defined in /in/qZU6F:7 Stack trace: #0 /in/qZU6F(11): x(Object(Second)) #1 {main} thrown in /in/qZU6F on line 7
Process exited with code 255.

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