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<?php $f = function () use ($f) { $f(); }; $f();
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $f in /in/EMqtD on line 3 Fatal error: Uncaught Error: Value of type null is not callable in /in/EMqtD:4 Stack trace: #0 /in/EMqtD(7): {closure}() #1 {main} thrown in /in/EMqtD on line 4
Process exited with code 255.

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