OutputStreamWriter.java: (flush, writeChars): Throw IOException if stream closed.

	* java/io/OutputStreamWriter.java: (flush, writeChars): Throw
	IOException if stream closed.

From-SVN: r39559

libjava/ChangeLog

@@ -9,6 +9,9 @@
 	* java/lang/Float.java: As above.
 	(floatToRawIntBits): New method.
 
+	* java/io/OutputStreamWriter.java: (flush, writeChars): Throw 
+	IOException if stream closed.
+
 2001-02-08  Tom Tromey  <tromey@redhat.com>
 
 	* java/lang/Float.java (parseFloat): New method.

libjava/java/io/OutputStreamWriter.java

-/* Copyright (C) 1998, 1999, 2000  Free Software Foundation
+/* Copyright (C) 1998, 1999, 2000, 2001  Free Software Foundation
 
    This file is part of libgcj.
 
@@ -69,6 +69,9 @@ public class OutputStreamWriter extends Writer
   {
     synchronized (lock)
       {
+	if (out == null)
+	  throw new IOException("Stream closed");
+
 	if (wcount > 0)
 	  {
 	    writeChars(work, 0, wcount);
@@ -97,6 +100,9 @@ public class OutputStreamWriter extends Writer
   private void writeChars(char[] buf, int offset, int count)
     throws IOException
   {
+    if (out == null)
+      throw new IOException("Stream closed");
+  
     while (count > 0)
       {
 	// We must flush if out.count == out.buf.length.