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  1. JDK
  2. JDK-8269351

Proxy::newProxyInstance and MethodHandleProxies::asInterfaceInstance should reject sealed interfaces

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    • Bug
    • Resolution: Fixed
    • P2
    • 17
    • 17
    • core-libs
    • None

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      Description

        Creating as a P2 for now as this may need attention in Java 17.

        Proxy.newProxyInstance doesn't specify how it deals with sealed interfaces. I suspect we may need to update the list of restrictions so that IllegalArgumentException is thrown if an interface is sealed.

        As things stand, a confusing IncompatibleClassChangeError will be thrown when attempting to define the proxy class.

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                mchung Mandy Chung
                alanb Alan Bateman
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                  Updated:
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