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<?php echo count(new EmptyIterator(), COUNT_RECURSIVE); // int(1)
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, EmptyIterator given in /in/jdrF8:3 Stack trace: #0 /in/jdrF8(3): count(Object(EmptyIterator), 1) #1 {main} thrown in /in/jdrF8 on line 3
Process exited with code 255.

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