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<?php echo (string)array_shift($a=[array_sum([substr("4", 1)])]);
Output for git.master, git.master_jit
Fatal error: Uncaught Error: array_shift(): Argument #1 ($array) cannot be passed by reference in /in/V0UgE:3 Stack trace: #0 {main} thrown in /in/V0UgE on line 3
Process exited with code 255.
Output for rfc.property-hooks
Warning: array_sum(): Addition is not supported on type string in /in/V0UgE on line 3 Fatal error: Uncaught Error: array_shift(): Argument #1 ($array) cannot be passed by reference in /in/V0UgE:3 Stack trace: #0 {main} thrown in /in/V0UgE on line 3
Process exited with code 255.

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