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8337622: IllegalArgumentException in java.lang.reflect.Field.get

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Reviewed-by: dholmes, shade
This commit is contained in:
Coleen Phillimore 2024-08-12 17:56:46 +00:00
parent 2ca136a7ad
commit 41e31d6b0a
3 changed files with 51 additions and 7 deletions
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7
src/hotspot/share/classfile/javaClasses.cpp
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@ -1452,19 +1452,12 @@ void java_lang_Class::compute_offsets() {
InstanceKlass* k = vmClasses::Class_klass();
CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
// Init lock is a C union with component_mirror. Only instanceKlass mirrors have
// init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
// GC treats them the same.
_init_lock_offset = _component_mirror_offset;
CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
}
#if INCLUDE_CDS
void java_lang_Class::serialize_offsets(SerializeClosure* f) {
f->do_bool(&_offsets_computed);
f->do_u4((u4*)&_init_lock_offset);
CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);

1
src/hotspot/share/classfile/javaClasses.hpp
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@ -209,6 +209,7 @@ class java_lang_String : AllStatic {
macro(java_lang_Class, static_oop_field_count, int_signature, false) \
macro(java_lang_Class, protection_domain, object_signature, false) \
macro(java_lang_Class, source_file, object_signature, false) \
macro(java_lang_Class, init_lock, object_signature, false)
class java_lang_Class : AllStatic {
friend class VMStructs;

50
test/hotspot/jtreg/runtime/reflect/ComponentTypeFieldTest.java Normal file
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@ -0,0 +1,50 @@
/*
* Copyright (c) 2024, 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 8337622
* @summary (reflect) java.lang.Class componentType field not found.
* @library /test/lib
* @modules java.base/java.lang:open
* @run main ComponentTypeFieldTest
*/
import java.lang.reflect.Field;
import static jdk.test.lib.Asserts.*;
public class ComponentTypeFieldTest {
public static void main(String[] args) throws Exception {
Field f = Class.class.getDeclaredField("componentType");
f.setAccessible(true);
Object val = f.get(Runnable.class);
assertTrue(val == null);
System.out.println("val is " + val);
Object arrayVal = f.get(Integer[].class);
System.out.println("val is " + arrayVal);
String arrayValString = arrayVal.toString();
assertTrue(arrayValString.equals("class java.lang.Integer"));
}
}