[Question] Variadic method signature compatibility between 5.6 and 7.0

Hello, internals! I have a question about changed behavior in 7.0 for matching signature of variadic method. Here is an example of code: class Foo { public static function test($bar = null) { var_dump(func_get_args()); } } class Baz extends Foo { public static function test(...$args) { parent::test(...$args); } } Baz::test(); Baz::test('hello'); For 5.6 this code works normally, but in 7.0 it produces a warning about signature: "Warning: Declaration of Baz::test(...$args) should be compatible with Foo::test($bar = NULL)" See https://3v4l.org/so6P2 From userland point of view, these signatures should be compatible, so I decided to check this behavior, was it intended or not. Thanks!