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<?php declare(strict_types=1); function foo():DateTime { return null;} var_dump(foo());
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: foo(): Return value must be of type DateTime, null returned in /in/Vv1XO:5 Stack trace: #0 /in/Vv1XO(6): foo() #1 {main} thrown in /in/Vv1XO on line 5
Process exited with code 255.

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