Mercurial > hg > truffle
diff test/serviceability/jvmti/UnresolvedClassAgent.java @ 14648:4c76be9856fc
8035150: ShouldNotReachHere() in ConstantPool::copy_entry_to
Reviewed-by: dcubed, mgronlun
author | sla |
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date | Wed, 26 Feb 2014 15:47:44 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/serviceability/jvmti/UnresolvedClassAgent.java Wed Feb 26 15:47:44 2014 +0100 @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2014, 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. + */ + +import java.io.DataInputStream; +import java.io.File; +import java.io.FileInputStream; +import java.lang.instrument.ClassDefinition; +import java.lang.instrument.Instrumentation; + +/* + * This class is present during compilation, but will be deleted before execution. + */ +class MyUnresolvedClass { + static void bar() { + } +} + +class MyRedefinedClass { + static void foo() { + MyUnresolvedClass.bar(); + } +} + +public class UnresolvedClassAgent { + public static void main(String... args) { + } + + public static void premain(String args, Instrumentation inst) throws Exception { + try { + MyRedefinedClass.foo(); + } catch(NoClassDefFoundError err) { + System.out.println("NoClassDefFoundError (expected)"); + } + + File f = new File(System.getProperty("test.classes"), "MyRedefinedClass.class"); + byte[] buf = new byte[(int)f.length()]; + try (DataInputStream dis = new DataInputStream(new FileInputStream(f))) { + dis.readFully(buf); + } + ClassDefinition cd = new ClassDefinition(MyRedefinedClass.class, buf); + inst.redefineClasses(new ClassDefinition[] {cd}); + + try { + MyRedefinedClass.foo(); + } catch(NoClassDefFoundError err) { + System.out.println("NoClassDefFoundError (expected again)"); + } + } +}