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<?php class Foo {} class Bar extends Foo {} class FooCreator { public function create(FooAlias $foo) { } } $foo = new Bar; $creator = new FooCreator(); $creator->create($foo); class_alias('Foo', 'FooAlias'); hint_for_alias($foo);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: FooCreator::create(): Argument #1 ($foo) must be of type FooAlias, Bar given, called in /in/vnA9M on line 19 and defined in /in/vnA9M:9 Stack trace: #0 /in/vnA9M(19): FooCreator->create(Object(Bar)) #1 {main} thrown in /in/vnA9M on line 9
Process exited with code 255.

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