jdk8-mips64-public/hotspot: test/runtime/classFileParserBug/BadNameAndType.java@9d07e8518392

8042660: vm/mlvm/anonloader/stress/byteMutation failed with: assert(index >=0 && index < _length) failed: symbol index overflow
Summary: Detect zero length signatures and throw ClassFormatError before bad dereference occurs
Reviewed-by: hseigel

     1 /*

     2  * Copyright (c) 2016, 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  */

    25 /*

    26  * @test

    27  * @bug 8042660

    28  * @summary Constant pool NameAndType entries must point to non-zero length Utf8 strings

    29  * @compile emptySigUtf8.jcod

    30  * @compile emptyNameUtf8.jcod

    31  * @run main/othervm -Xverify:all BadNameAndType

    32  */

    34 // Test that a constant pool NameAndType descriptor_index and/or name_index

    35 // that points to a zero length Utf8 string causes a ClassFormatError.

    36 public class BadNameAndType {

    37     public static void main(String args[]) throws Throwable {

    39         System.out.println("Regression test for bug 8042660");

    41         // Test descriptor_index pointing to zero-length string.

    42         try {

    43             Class newClass = Class.forName("emptySigUtf8");

    44             throw new RuntimeException("Expected ClassFormatError exception not thrown");

    45         } catch (java.lang.ClassFormatError e) {

    46             System.out.println("Test BadNameAndType passed test case emptySigUtf8");

    47         }

    49         // Test name_index pointing to zero-length string.

    50         try {

    51             Class newClass = Class.forName("emptyNameUtf8");

    52             throw new RuntimeException("Expected ClassFormatError exception not thrown");

    53         } catch (java.lang.ClassFormatError e) {

    54             System.out.println("Test BadNameAndType passed test case emptyNameUtf8");

    55         }

    56     }

    57 }

Mercurial > jdk8-mips64-public > hotspot / file revision

test/runtime/classFileParserBug/BadNameAndType.java@9d07e8518392

test/runtime/classFileParserBug/BadNameAndType.java