Patch: fix for PR 1971

[Tom Tromey]

This fixes PR libgcj/1971.
See the comment in the code for the explanation.

This is going on the trunk, branch, and into Classpath.

2001-03-08  Tom Tromey  <tromey@redhat.com>

	* java/io/ObjectStreamClass.java (setUID): Don't write interface
	info for array classes.
	Fixes PR libgcj/1971.

Tom

Index: java/io/ObjectStreamClass.java
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/io/ObjectStreamClass.java,v
retrieving revision 1.6
diff -u -r1.6 ObjectStreamClass.java
--- ObjectStreamClass.java	2001/01/06 23:28:40	1.6
+++ ObjectStreamClass.java	2001/03/09 01:30:28
@@ -444,11 +444,15 @@
   				| Modifier.INTERFACE | Modifier.PUBLIC);
       data_out.writeInt (modifiers);
 
-      Class[] interfaces = cl.getInterfaces ();
-      Arrays.sort (interfaces, interfaceComparator);
-      for (int i=0; i < interfaces.length; i++)
-	data_out.writeUTF (interfaces[i].getName ());
-
+      // Pretend that an array has no interfaces, because when array
+      // serialization was defined (JDK 1.1), arrays didn't have it.
+      if (! cl.isArray ())
+	{
+	  Class[] interfaces = cl.getInterfaces ();
+	  Arrays.sort (interfaces, interfaceComparator);
+	  for (int i=0; i < interfaces.length; i++)
+	    data_out.writeUTF (interfaces[i].getName ());
+	}
 
       Field field;
       Field[] fields = cl.getDeclaredFields ();