jdk-24/test/hotspot/jtreg/runtime/Nestmates/privateMethods/TestInvokeErrors.java

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/*
 * @test
 * @bug 8046171 8211065
 * @summary Setup nestmate calls to private methods then use
 *          modified jcod classes to introduce errors. Test with
 *          and without verification enabled
 * @compile TestInvokeErrors.java
 * @compile MissingMethod.jcod
 *          MissingMethodWithSuper.jcod
 *          MissingNestHost.jcod
 * @run main TestInvokeErrors true
 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:-BytecodeVerificationRemote -XX:-BytecodeVerificationLocal TestInvokeErrors false
 */

public class TestInvokeErrors {

    static class Nested {
        private void priv_invoke() {
            System.out.println("Nested::priv_invoke");
        }
    }

    static class MissingMethod {
        // jcod version will rename this method to not_priv_invoke
        private void priv_invoke() {
            System.out.println("MissingMethod::priv_invoke");
        }
    }

    static class MissingMethodWithSuper extends Nested {
        // jcod version will rename this method to not_priv_invoke
        private void priv_invoke() {
            System.out.println("MissingMethodWithSuper::priv_invoke");
        }
    }

    static class MissingNestHost {
        // jcod version will change NestHost to a non-existent class
        private void priv_invoke() {
            System.out.println("MissingNestHost::priv_invoke");
        }
    }

    // Helper class adds a level of indirection to avoid the main class
    // failing verification if these tests are written directly in main.
    // That can only happen if using invokespecial for nestmate invocation.
    static class Helper {
        static void doTest() {
            try {
                MissingNestHost m = new MissingNestHost();
                m.priv_invoke();
                throw new Error("Unexpected success invoking MissingNestHost.priv_invoke");
            }
            catch (IllegalAccessError iae) {
                if (iae.getMessage().contains("java.lang.NoClassDefFoundError: NoSuchClass")) {
                    System.out.println("Got expected exception:" + iae);
                } else {
                    throw new Error("Unexpected exception", iae);
                }
            }
        }
    }

    public static void main(String[] args) throws Throwable {
        // some errors change depending on whether they are caught by the
        // verifier first
        boolean verifying = Boolean.parseBoolean(args[0]);
        System.out.println("Verification is " +
                           (verifying ? "enabled" : "disabled"));

        try {
            MissingMethod m = new MissingMethod();
            m.priv_invoke();
            throw new Error("Unexpected success invoking MissingMethod.priv_invoke");
        }
        catch (NoSuchMethodError nsme) {
            System.out.println("Got expected exception:" + nsme);
        }

        // This test was revised to expect successful invocation of the
        // super class method - see JDK-8211065
        MissingMethodWithSuper m = new MissingMethodWithSuper();
        m.priv_invoke();

        // Verification of Helper will trigger the nestmate access check failure
        try {
            Helper.doTest();
        }
        catch (IllegalAccessError iae) {
            if (verifying)
                System.out.println("Got expected exception:" + iae);
            else
                throw new Error("Unexpected error loading Helper class with verification disabled", iae);
        }
    }
}