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<?php declare(strict_types=1); const DEFAULT_VALUE = null; function foo(bool $arg = DEFAULT_VALUE) { var_dump($arg); } foo(true); foo(false); foo(null);
Output for git.master, git.master_jit, rfc.property-hooks
bool(true) bool(false) Fatal error: Uncaught TypeError: foo(): Argument #1 ($arg) must be of type bool, null given, called in /in/SN1FB on line 12 and defined in /in/SN1FB:5 Stack trace: #0 /in/SN1FB(12): foo(NULL) #1 {main} thrown in /in/SN1FB on line 5
Process exited with code 255.

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