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test/runtime/finalStatic/FinalStatic.java@6cbff0651f1a (annotated)

test/runtime/finalStatic/FinalStatic.java

Mon, 06 Nov 2017 16:51:47 +0800

author

aoqi

date

Mon, 06 Nov 2017 16:51:47 +0800

changeset 7997

6cbff0651f1a

parent 0

f90c822e73f8

permissions

-rw-r--r--

[Code Reorganization] remove trailing whitespace to pass jcheck test

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 8028553
aoqi@0	27	* @summary Test that VerifyError is not thrown when 'overriding' a static method.
aoqi@0	28	* @run main FinalStatic
aoqi@0	29	*/
aoqi@0	30
aoqi@0	31	import java.lang.reflect.*;
aoqi@0	32	import jdk.internal.org.objectweb.asm.ClassWriter;
aoqi@0	33	import jdk.internal.org.objectweb.asm.MethodVisitor;
aoqi@0	34	import jdk.internal.org.objectweb.asm.Opcodes;
aoqi@0	35
aoqi@0	36	/*
aoqi@0	37	* class A { static final int m() {return FAIL; } }
aoqi@0	38	* class B extends A { int m() { return PASS; } }
aoqi@0	39	* class FinalStatic {
aoqi@0	40	* public static void main () {
aoqi@0	41	* Object b = new B();
aoqi@0	42	* b.m();
aoqi@0	43	* }
aoqi@0	44	* }
aoqi@0	45	*/
aoqi@0	46	public class FinalStatic {
aoqi@0	47
aoqi@0	48	static final String CLASS_NAME_A = "A";
aoqi@0	49	static final String CLASS_NAME_B = "B";
aoqi@0	50	static final int FAILED = 0;
aoqi@0	51	static final int EXPECTED = 1234;
aoqi@0	52
aoqi@0	53	static class TestClassLoader extends ClassLoader implements Opcodes {
aoqi@0	54
aoqi@0	55	@Override
aoqi@0	56	public Class findClass(String name) throws ClassNotFoundException {
aoqi@0	57	byte[] b;
aoqi@0	58	try {
aoqi@0	59	b = loadClassData(name);
aoqi@0	60	} catch (Throwable th) {
aoqi@0	61	// th.printStackTrace();
aoqi@0	62	throw new ClassNotFoundException("Loading error", th);
aoqi@0	63	}
aoqi@0	64	return defineClass(name, b, 0, b.length);
aoqi@0	65	}
aoqi@0	66
aoqi@0	67	private byte[] loadClassData(String name) throws Exception {
aoqi@0	68	ClassWriter cw = new ClassWriter(0);
aoqi@0	69	MethodVisitor mv;
aoqi@0	70	switch (name) {
aoqi@0	71	case CLASS_NAME_A:
aoqi@0	72	cw.visit(52, ACC_SUPER | ACC_PUBLIC, CLASS_NAME_A, null, "java/lang/Object", null);
aoqi@0	73	{
aoqi@0	74	mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
aoqi@0	75	mv.visitCode();
aoqi@0	76	mv.visitVarInsn(ALOAD, 0);
aoqi@0	77	mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
aoqi@0	78	mv.visitInsn(RETURN);
aoqi@0	79	mv.visitMaxs(1, 1);
aoqi@0	80	mv.visitEnd();
aoqi@0	81
aoqi@0	82	mv = cw.visitMethod(ACC_FINAL | ACC_STATIC, "m", "()I", null, null);
aoqi@0	83	mv.visitCode();
aoqi@0	84	mv.visitLdcInsn(FAILED);
aoqi@0	85	mv.visitInsn(IRETURN);
aoqi@0	86	mv.visitMaxs(1, 1);
aoqi@0	87	mv.visitEnd();
aoqi@0	88	}
aoqi@0	89	break;
aoqi@0	90	case CLASS_NAME_B:
aoqi@0	91	cw.visit(52, ACC_SUPER | ACC_PUBLIC, CLASS_NAME_B, null, CLASS_NAME_A, null);
aoqi@0	92	{
aoqi@0	93	mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
aoqi@0	94	mv.visitCode();
aoqi@0	95	mv.visitVarInsn(ALOAD, 0);
aoqi@0	96	mv.visitMethodInsn(INVOKESPECIAL, CLASS_NAME_A, "<init>", "()V");
aoqi@0	97	mv.visitInsn(RETURN);
aoqi@0	98	mv.visitMaxs(1, 1);
aoqi@0	99	mv.visitEnd();
aoqi@0	100
aoqi@0	101	mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null);
aoqi@0	102	mv.visitCode();
aoqi@0	103	mv.visitLdcInsn(EXPECTED);
aoqi@0	104	mv.visitInsn(IRETURN);
aoqi@0	105	mv.visitMaxs(1, 1);
aoqi@0	106	mv.visitEnd();
aoqi@0	107
aoqi@0	108	}
aoqi@0	109	break;
aoqi@0	110	default:
aoqi@0	111	break;
aoqi@0	112	}
aoqi@0	113	cw.visitEnd();
aoqi@0	114
aoqi@0	115	return cw.toByteArray();
aoqi@0	116	}
aoqi@0	117	}
aoqi@0	118
aoqi@0	119	public static void main(String[] args) throws Exception {
aoqi@0	120	TestClassLoader tcl = new TestClassLoader();
aoqi@0	121	Class<?> a = tcl.loadClass(CLASS_NAME_A);
aoqi@0	122	Class<?> b = tcl.loadClass(CLASS_NAME_B);
aoqi@0	123	Object inst = b.newInstance();
aoqi@0	124	Method[] meths = b.getDeclaredMethods();
aoqi@0	125
aoqi@0	126	Method m = meths[0];
aoqi@0	127	int mod = m.getModifiers();
aoqi@0	128	if ((mod & Modifier.FINAL) != 0) {
aoqi@0	129	throw new Exception("FAILED: " + m + " is FINAL");
aoqi@0	130	}
aoqi@0	131	if ((mod & Modifier.STATIC) != 0) {
aoqi@0	132	throw new Exception("FAILED: " + m + " is STATIC");
aoqi@0	133	}
aoqi@0	134
aoqi@0	135	m.setAccessible(true);
aoqi@0	136	if (!m.invoke(inst).equals(EXPECTED)) {
aoqi@0	137	throw new Exception("FAILED: " + EXPECTED + " from " + m);
aoqi@0	138	}
aoqi@0	139
aoqi@0	140	System.out.println("Passed.");
aoqi@0	141	}
aoqi@0	142	}