Index: java/org/apache/coyote/http11/filters/FlushableGZIPOutputStream.java
===================================================================
--- java/org/apache/coyote/http11/filters/FlushableGZIPOutputStream.java	(revision 1378376)
+++ java/org/apache/coyote/http11/filters/FlushableGZIPOutputStream.java	(working copy)
@@ -137,7 +137,7 @@
             if (len > 0) {
                 out.write(buf, 0, len);
             }
-        } while (len != 0);
+        } while (len > 0 || !def.needsInput());
     }
 
 }