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<?php namespace Foo; set_error_handler(function () { throw new \Exception(); }); call_user_func(function (array $ref) {}, 'not_an_array_variable');
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: Foo\{closure}(): Argument #1 ($ref) must be of type array, string given in /in/kG7oU:8 Stack trace: #0 [internal function]: Foo\{closure}('not_an_array_va...') #1 /in/kG7oU(8): call_user_func(Object(Closure), 'not_an_array_va...') #2 {main} thrown in /in/kG7oU on line 8
Process exited with code 255.

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