many_loader.java

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// A simple class to extend an abstract class and get loaded with different
// loaders. This class is loaded via LOADER1. A similar named class will
// be loaded via LOADER2.
public class many_loader extends bug_21227 {
    public You_Have_Been_P0wned _p0wnee;

    // I need to compile (hence call in a loop) a function which returns a value
    // loaded from classloader other than the system one. The point of this
    // call is to give me an abstract 'hook' into a function loaded with a
    // foreign loader.

    // The original 'make(boolean)' returns a bug_21227. The VM will inject a
    // synthetic method to up-cast the returned 'from_loader1' into a
    // 'bug_21227'.
    public many_loader[] make(IFace iface) {
        // This function needs to return a value known to be loaded from LOADER2.
        // Since I need to use a yet different loader, I need to make an unknown
        // foreign call. In this case I'll be using an interface to make the
        // unknown call, with but a single implementor so the compiler can do the
        // upcast statically.
        return iface==null ? null : iface.gen();
    }
}