hotspot/test/runtime/defineAnonClass/NestedUnsafe2.java

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/*
 * @test
 * @bug 8058575
 * @summary Creates an anonymous class inside of an anonymous class.
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.compiler
 *          java.management
 * @run main p.NestedUnsafe2
 */

package p;

import java.lang.*;

import jdk.internal.misc.Unsafe;
import jdk.test.lib.compiler.InMemoryJavaCompiler;


// Test that an anonymous class that gets put in its host's package cannot define
// an anonymous class in another package.
public class NestedUnsafe2 {
    // The String concatenation should create the nested anonymous class.
    public static byte klassbuf[] = InMemoryJavaCompiler.compile("q.TestClass",
        "package q; " +
        "public class TestClass { " +
        "    public static void concat(String one, String two) throws Throwable { " +
        "        System.out.println(one + two);" +
        " } } ");

    public static void main(String args[]) throws Exception {
        Unsafe unsafe = Unsafe.getUnsafe();

        // The anonymous class calls defineAnonymousClass creating a nested anonymous class.
        byte klassbuf2[] = InMemoryJavaCompiler.compile("TestClass2",
            "import jdk.internal.misc.Unsafe; " +
            "public class TestClass2 { " +
            "    public static void doit() throws Throwable { " +
            "        Unsafe unsafe = jdk.internal.misc.Unsafe.getUnsafe(); " +
            "        Class klass2 = unsafe.defineAnonymousClass(TestClass2.class, p.NestedUnsafe2.klassbuf, new Object[0]); " +
            "        unsafe.ensureClassInitialized(klass2); " +
            "        Class[] dArgs = new Class[2]; " +
            "        dArgs[0] = String.class; " +
            "        dArgs[1] = String.class; " +
            "        try { " +
            "            klass2.getMethod(\"concat\", dArgs).invoke(null, \"CC\", \"DD\"); " +
            "        } catch (Throwable ex) { " +
            "            throw new RuntimeException(\"Exception: \" + ex.toString()); " +
            "        } " +
            "} } ",
            "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED");

        Class klass2 = unsafe.defineAnonymousClass(p.NestedUnsafe2.class, klassbuf2, new Object[0]);
        try {
            klass2.getMethod("doit").invoke(null);
            throw new RuntimeException("Expected exception not thrown");
        } catch (Throwable ex) {
            Throwable iae = ex.getCause();
            if (!iae.toString().contains(
                "IllegalArgumentException: Host class p/NestedUnsafe2 and anonymous class q/TestClass")) {
                throw new RuntimeException("Exception: " + iae.toString());
            }
        }
    }
}