i have been lax on running tests for a while; now I am seeing (on winXP, single CPU) :-
Testcase: testCreateWithEmptyFileset(org.apache.tools.ant.taskdefs.JarTest Caused an ERROR null java.lang.NullPointerException at org.apache.tools.ant.taskdefs.Zip.isEmpty(Zip.java:1082) at org.apache.tools.ant.taskdefs.Zip.executeMain(Zip.java:388) at org.apache.tools.ant.taskdefs.Zip.execute(Zip.java:323) at org.apache.tools.ant.Task.perform(Task.java:388) at org.apache.tools.ant.Target.execute(Target.java:309) at org.apache.tools.ant.Target.performTasks(Target.java:336) at org.apache.tools.ant.Project.executeTarget(Project.java:1394)