From 7a0e0d691c38aa04dc0c6a1633a116549a4be7c1 Mon Sep 17 00:00:00 2001
From: Jacobus Martinus Kruithof <jkf@apache.org>
Date: Sun, 12 Feb 2006 12:33:13 +0000
Subject: [PATCH] PR 38622: project helper reference may not have been set.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@377166 13f79535-47bb-0310-9956-ffa450edef68
---
 src/main/org/apache/tools/ant/taskdefs/ImportTask.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/org/apache/tools/ant/taskdefs/ImportTask.java b/src/main/org/apache/tools/ant/taskdefs/ImportTask.java
index 0d1524613..c86cd00c3 100644
--- a/src/main/org/apache/tools/ant/taskdefs/ImportTask.java
+++ b/src/main/org/apache/tools/ant/taskdefs/ImportTask.java
@@ -93,6 +93,12 @@ public class ImportTask extends Task {
         ProjectHelper helper =
                 (ProjectHelper) getProject().
                     getReference(ProjectHelper.PROJECTHELPER_REFERENCE);
+        
+        if (helper == null) {
+            // this happens if the projecthelper was not registered with the project.
+            throw new BuildException("import requires support in ProjectHelper");
+        }
+        
         Vector importStack = helper.getImportStack();
 
         if (importStack.size() == 0) {