| /* |
| * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8087342 |
| * @summary Test linkresolver search static, instance and overpass duplicates |
| * @modules java.base/jdk.internal.org.objectweb.asm |
| * @run main/othervm -Xverify:none TestStaticandInstance |
| */ |
| |
| |
| import java.util.*; |
| import jdk.internal.org.objectweb.asm.*; |
| import static jdk.internal.org.objectweb.asm.Opcodes.*; |
| |
| public class TestStaticandInstance { |
| static final String stringC = "C"; |
| static final String stringD = "D"; |
| static final String stringI = "I"; |
| |
| public static void main(String args[]) throws Throwable { |
| ClassLoader cl = new ClassLoader() { |
| public Class<?> loadClass(String name) throws ClassNotFoundException { |
| Class retClass; |
| if ((retClass = findLoadedClass(name)) != null) { |
| return retClass; |
| } |
| if (stringC.equals(name)) { |
| byte[] classFile=dumpC(); |
| return defineClass(stringC, classFile, 0, classFile.length); |
| } |
| if (stringD.equals(name)) { |
| byte[] classFile=dumpD(); |
| return defineClass(stringD, classFile, 0, classFile.length); |
| } |
| if (stringI.equals(name)) { |
| byte[] classFile=dumpI(); |
| return defineClass(stringI, classFile, 0, classFile.length); |
| } |
| return super.loadClass(name); |
| } |
| }; |
| |
| Class classC = cl.loadClass(stringC); |
| Class classI = cl.loadClass(stringI); |
| |
| try { |
| int staticret = (Integer)cl.loadClass(stringD).getDeclaredMethod("CallStatic").invoke(null); |
| if (staticret != 1) { |
| throw new RuntimeException("invokestatic failed to call correct method"); |
| } |
| System.out.println("staticret: " + staticret); // should be 1 |
| |
| int invokeinterfaceret = (Integer)cl.loadClass(stringD).getDeclaredMethod("CallInterface").invoke(null); |
| if (invokeinterfaceret != 0) { |
| throw new RuntimeException(String.format("Expected java.lang.AbstractMethodError, got %d", invokeinterfaceret)); |
| } |
| System.out.println("invokeinterfaceret: AbstractMethodError"); |
| |
| int invokevirtualret = (Integer)cl.loadClass(stringD).getDeclaredMethod("CallVirtual").invoke(null); |
| if (invokevirtualret != 0) { |
| throw new RuntimeException(String.format("Expected java.lang.IncompatibleClassChangeError, got %d", invokevirtualret)); |
| } |
| System.out.println("invokevirtualret: IncompatibleClassChangeError"); |
| } catch (java.lang.Throwable e) { |
| throw new RuntimeException("Unexpected exception: " + e.getMessage()); |
| } |
| } |
| |
| /* |
| interface I { |
| public int m(); // abstract |
| default int q() { return 3; } // trigger defmeth processing: C gets AME overpass |
| } |
| |
| // C gets static, private and AME overpass m()I with -Xverify:none |
| class C implements I { |
| static int m() { return 1;} // javac with "n()" and patch to "m()" |
| private int m() { return 2;} // javac with public and patch to private |
| } |
| |
| public class D { |
| public static int CallStatic() { |
| int staticret = C.m(); // javac with "C.n" and patch to "C.m" |
| return staticret; |
| } |
| public static int CallInterface() throws AbstractMethodError{ |
| try { |
| I myI = new C(); |
| return myI.m(); |
| } catch (java.lang.AbstractMethodError e) { |
| return 0; // for success |
| } |
| } |
| public static int CallVirtual() { |
| try { |
| C myC = new C(); |
| return myC.m(); |
| } catch (java.lang.IncompatibleClassChangeError e) { |
| return 0; // for success |
| } |
| } |
| } |
| */ |
| |
| public static byte[] dumpC() { |
| |
| ClassWriter cw = new ClassWriter(0); |
| FieldVisitor fv; |
| MethodVisitor mv; |
| AnnotationVisitor av0; |
| |
| cw.visit(52, ACC_SUPER, "C", null, "java/lang/Object", new String[] { "I" }); |
| |
| { |
| mv = cw.visitMethod(0, "<init>", "()V", null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(1, 1); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_STATIC, "m", "()I", null, null); |
| mv.visitCode(); |
| mv.visitInsn(ICONST_1); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(1, 0); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_PRIVATE, "m", "()I", null, null); |
| mv.visitCode(); |
| mv.visitInsn(ICONST_2); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(1, 1); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| |
| return cw.toByteArray(); |
| } |
| |
| public static byte[] dumpD () { |
| |
| ClassWriter cw = new ClassWriter(0); |
| FieldVisitor fv; |
| MethodVisitor mv; |
| AnnotationVisitor av0; |
| |
| cw.visit(52, ACC_PUBLIC + ACC_SUPER, "D", null, "java/lang/Object", null); |
| |
| { |
| mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(1, 1); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "CallStatic", "()I", null, null); |
| mv.visitCode(); |
| mv.visitMethodInsn(INVOKESTATIC, "C", "m", "()I", false); |
| mv.visitVarInsn(ISTORE, 0); |
| mv.visitVarInsn(ILOAD, 0); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(1, 1); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "CallInterface", "()I", null, new String[] { "java/lang/AbstractMethodError" }); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| Label l1 = new Label(); |
| Label l2 = new Label(); |
| mv.visitTryCatchBlock(l0, l1, l2, "java/lang/AbstractMethodError"); |
| mv.visitLabel(l0); |
| mv.visitTypeInsn(NEW, "C"); |
| mv.visitInsn(DUP); |
| mv.visitMethodInsn(INVOKESPECIAL, "C", "<init>", "()V", false); |
| mv.visitVarInsn(ASTORE, 0); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKEINTERFACE, "I", "m", "()I", true); |
| mv.visitLabel(l1); |
| mv.visitInsn(IRETURN); |
| mv.visitLabel(l2); |
| mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/AbstractMethodError"}); |
| mv.visitVarInsn(ASTORE, 0); |
| mv.visitInsn(ICONST_0); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(2, 1); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "CallVirtual", "()I", null, null); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| Label l1 = new Label(); |
| Label l2 = new Label(); |
| mv.visitTryCatchBlock(l0, l1, l2, "java/lang/IncompatibleClassChangeError"); |
| mv.visitLabel(l0); |
| mv.visitTypeInsn(NEW, "C"); |
| mv.visitInsn(DUP); |
| mv.visitMethodInsn(INVOKESPECIAL, "C", "<init>", "()V", false); |
| mv.visitVarInsn(ASTORE, 0); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKEVIRTUAL, "C", "m", "()I", false); |
| mv.visitLabel(l1); |
| mv.visitInsn(IRETURN); |
| mv.visitLabel(l2); |
| mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/IncompatibleClassChangeError"}); |
| mv.visitVarInsn(ASTORE, 0); |
| mv.visitInsn(ICONST_0); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(2, 1); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| |
| return cw.toByteArray(); |
| } |
| |
| public static byte[] dumpI() { |
| |
| ClassWriter cw = new ClassWriter(0); |
| FieldVisitor fv; |
| MethodVisitor mv; |
| AnnotationVisitor av0; |
| |
| cw.visit(52, ACC_ABSTRACT + ACC_INTERFACE, "I", null, "java/lang/Object", null); |
| |
| { |
| mv = cw.visitMethod(ACC_PUBLIC + ACC_ABSTRACT, "m", "()I", null, null); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_PUBLIC, "q", "()I", null, null); |
| mv.visitCode(); |
| mv.visitInsn(ICONST_3); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(1, 1); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| |
| return cw.toByteArray(); |
| } |
| } |