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<?php $a = [3, 1, 2]; $b = [4, 5, 6]; usort($a, function() { usort($b, function() { return 0; }); return 1; });
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: usort(): Argument #1 ($array) must be of type array, null given in /in/VTDGb:7 Stack trace: #0 /in/VTDGb(7): usort(NULL, Object(Closure)) #1 [internal function]: {closure}(3, 1) #2 /in/VTDGb(6): usort(Array, Object(Closure)) #3 {main} thrown in /in/VTDGb on line 7
Process exited with code 255.

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