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<?php interface Foo { function baz($moo); } abstract class Bar implements Foo {} class_alias('Bar', 'Bar53'); eval('abstract class Bar52 extends Bar {}'); class Test53 extends Bar53 { function baz($moo) {} } class Test52 extends Bar52 { function baz($moo) {} } var_dump(Test52 instanceof Foo); var_dump(Test53 instanceof Foo);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "Test52" in /in/03SAi:13 Stack trace: #0 {main} thrown in /in/03SAi on line 13
Process exited with code 255.

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