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<?php interface A { function foo(callable $callback); } interface B extends A { function foo(callable &$callback); }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of B::foo(callable &$callback) must be compatible with A::foo(callable $callback) in /in/QnJ50 on line 8
Process exited with code 255.

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