From 9402248914f981c040f0e81eadf20ad6e86d425c Mon Sep 17 00:00:00 2001
From: Stefan Bodewig <bodewig@apache.org>
Date: Tue, 14 Oct 2003 12:26:27 +0000
Subject: [PATCH] Throw an exception for missing manifests - as advertized in
 the javadocs.

PR: 19492
Submitted by:	Nikolaus Schmitt <n dot schmitt at scaet dot de>


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@275483 13f79535-47bb-0310-9956-ffa450edef68
---
 .../ant/taskdefs/optional/extension/ExtensionUtil.java      | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/extension/ExtensionUtil.java b/src/main/org/apache/tools/ant/taskdefs/optional/extension/ExtensionUtil.java
index d6cb01c5a..4ed4cdd58 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/extension/ExtensionUtil.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/extension/ExtensionUtil.java
@@ -238,7 +238,11 @@ public class ExtensionUtil {
         throws BuildException {
         try {
             final JarFile jarFile = new JarFile(file);
-            return jarFile.getManifest();
+            Manifest m = jarFile.getManifest();
+            if (m == null) {
+                throw new BuildException(file + " doesn't have a MANIFEST");
+            }
+            return m;
         } catch (final IOException ioe) {
             throw new BuildException(ioe.getMessage(), ioe);
         }