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<?php namespace My\Ns; class Foo {} if (!class_exists(Bar::class)) { class_alias(Foo::class, Bar::class); } function f(Bar $x): void { var_dump($x); } f(new Foo());
Output for git.master, git.master_jit, rfc.property-hooks
object(My\Ns\Foo)#1 (0) { }

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