1 /* 2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 8181171 27 * @summary Test deleting static method pointing to by a jmethod 28 * @library /test/lib 29 * @modules java.base/jdk.internal.misc 30 * @modules java.compiler 31 * java.instrument 32 * jdk.jartool/sun.tools.jar 33 * @run main RedefineClassHelper 34 * @run main/native/othervm -javaagent:redefineagent.jar -Xlog:redefine+class*=trace RedefineDeleteJmethod 35 */ 36 37 class B { 38 private static int deleteMe() { System.out.println("deleteMe called"); return 5; } 39 public static int callDeleteMe() { return deleteMe(); } 40 } 41 42 public class RedefineDeleteJmethod { 43 44 public static String newB = 45 "class B {" + 46 "public static int callDeleteMe() { return 6; }" + 47 "}"; 48 49 public static String newerB = 50 "class B {" + 51 "private static int deleteMe() { System.out.println(\"deleteMe (2) called\"); return 7; }" + 52 "public static int callDeleteMe() { return deleteMe(); }" + 53 "}"; 54 55 56 static { 57 System.loadLibrary("RedefineDeleteJmethod"); 58 } 59 60 static native int jniCallDeleteMe(); 61 62 static void test(int expected, boolean nsme_expected) throws Exception { 63 // Call through static method 64 int res = B.callDeleteMe(); 65 System.out.println("Result = " + res); 66 if (res != expected) { 67 throw new Error("returned " + res + " expected " + expected); 68 } 69 70 // Call through jmethodID, saved from first call. 71 try { 72 res = jniCallDeleteMe(); 73 if (nsme_expected) { 74 throw new RuntimeException("Failed, NoSuchMethodError expected"); 75 } 76 if (res != expected) { 77 throw new Error("returned " + res + " expected " + expected); 78 } 79 } catch (NoSuchMethodError ex) { 80 if (!nsme_expected) { 81 throw new RuntimeException("Failed, NoSuchMethodError not expected"); 82 } 83 System.out.println("Passed, NoSuchMethodError expected"); 84 } 85 } 86 87 public static void main(String[] args) throws Exception { 88 test(5, false); 89 RedefineClassHelper.redefineClass(B.class, newB); 90 test(6, true); 91 RedefineClassHelper.redefineClass(B.class, newerB); 92 test(7, true); 93 } 94 }