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<?php namespace Foo; set_error_handler(function () { throw new \Exception(); }); call_user_func(function (array &$ref) {}, []);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Exception in /in/9NSkD:5 Stack trace: #0 [internal function]: Foo\{closure}(2, 'Foo\\{closure}()...', '/in/9NSkD', 8) #1 /in/9NSkD(8): call_user_func(Object(Closure), Array) #2 {main} thrown in /in/9NSkD on line 5
Process exited with code 255.

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