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<?php declare(strict_types=1); function foo(string $foo) { echo $foo; } foo(1); foo('hi');
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: foo(): Argument #1 ($foo) must be of type string, int given, called in /in/vi5Ek on line 9 and defined in /in/vi5Ek:5 Stack trace: #0 /in/vi5Ek(9): foo(1) #1 {main} thrown in /in/vi5Ek on line 5
Process exited with code 255.

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