Index: main/org/apache/tools/ant/taskdefs/Zip.java
===================================================================
RCS file: /home/cvspublic/jakarta-ant/src/main/org/apache/tools/ant/taskdefs/Zip.java,v
retrieving revision 1.13
diff -u -r1.13 Zip.java
--- main/org/apache/tools/ant/taskdefs/Zip.java	2000/09/15 11:41:18	1.13
+++ main/org/apache/tools/ant/taskdefs/Zip.java	2000/09/16 17:48:54
@@ -135,6 +135,10 @@
         if (baseDir == null && filesets.size() == 0)
             throw new BuildException("basedir attribute must be set, or at least one fileset must be given!");
 
+        if (zipFile == null) {
+            throw new BuildException("zipfile attribute is required", location);
+        }
+
         Vector dss = new Vector ();
         if (baseDir != null)
             dss.addElement(getDirectoryScanner(baseDir));