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<?php declare(strict_types=1); class Phrase { public function __construct ( private string $text, ) {} public function __toString(): string { return $this->text; } } $ex = new \InvalidArgumentException(new Phrase('test'));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: Exception::__construct(): Argument #1 ($message) must be of type string, Phrase given in /in/S9kYE:17 Stack trace: #0 /in/S9kYE(17): Exception->__construct(Object(Phrase)) #1 {main} thrown in /in/S9kYE on line 17
Process exited with code 255.

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