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8189989: Improve container portability

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Reviewed-by: prr, azvegint, rhalade, skoivu
This commit is contained in:
Sergey Bylokhov 2017-11-15 07:07:16 -08:00
parent f988f60dc8
commit 2bb8cb2d4a
1 changed files with 9 additions and 1 deletions
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10
src/java.desktop/share/classes/java/awt/Container.java
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@ -35,6 +35,7 @@ import java.awt.peer.LightweightPeer;
import java.beans.PropertyChangeListener;
import java.io.IOException;
import java.io.InvalidObjectException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamField;
@ -3720,8 +3721,15 @@ public class Container extends Component {
throws ClassNotFoundException, IOException
{
ObjectInputStream.GetField f = s.readFields();
Component [] tmpComponent = (Component[])f.get("component", EMPTY_ARRAY);
// array of components may not be present in the stream or may be null
Component [] tmpComponent = (Component[])f.get("component", null);
if (tmpComponent == null) {
tmpComponent = EMPTY_ARRAY;
}
int ncomponents = (Integer) f.get("ncomponents", 0);
if (ncomponents < 0 || ncomponents > tmpComponent.length) {
throw new InvalidObjectException("Incorrect number of components");
}
component = new java.util.ArrayList<Component>(ncomponents);
for (int i = 0; i < ncomponents; ++i) {
component.add(tmpComponent[i]);