/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Regression test for 22460222, the sub class.
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// The field gaps order was wrong. If there were two gaps of different sizes,
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// and the larger one was needed, it wouldn't be found.
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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class GapOrder extends GapOrderBase {
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// The base class is 9 bytes. The entire class should be packed as:
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//
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// 00: oooo oooo
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// 08: b-ss rrrr
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// 16: rrrr iiii
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// 24: dddd dddd
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//
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// The problem was, the packer wasn't finding the gap where iiii should go,
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// because the gap where ss goes was given priority. Instead it packed as:
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// 00: oooo oooo
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// 08: b--- rrrr
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// 16: rrrr ----
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// 24: dddd dddd
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// 32: iiii ss
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public Object r1;
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public Object r2;
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public double d;
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public int i;
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public short s;
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static private void CheckField(String fieldName, int expected) {
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Field field = null;
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try {
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field = GapOrder.class.getField(fieldName);
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} catch (ReflectiveOperationException e) {
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System.out.println(fieldName + " not found in GapOrder.");
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return;
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}
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int actual = -1;
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try {
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Method getOffset = Field.class.getMethod("getOffset");
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actual = (Integer)getOffset.invoke(field);
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} catch (ReflectiveOperationException e) {
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System.out.println("Unable to get field offset for " + fieldName + ":" + e);
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return;
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}
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if (actual != expected) {
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System.out.println(
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String.format("GapOrder.%s has offset %d, but expected %d",
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fieldName, actual, expected));
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}
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}
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static public void Check() {
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CheckField("r1", 12);
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CheckField("r2", 16);
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CheckField("d", 24);
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CheckField("i", 20);
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CheckField("s", 10);
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}
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}
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