From a1eaa272b498cac7c6d14f13d65260021836f45a Mon Sep 17 00:00:00 2001
From: glennm <glennm@unknown>
Date: Tue, 10 Oct 2000 16:27:22 +0000
Subject: [PATCH] Throws BuildException if it tries to resolve a path which
 will go further up than the root of the file-system.

Reported by:                                        Noris Boyd
Patch submitted by:                             Nico Seessle


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268073 13f79535-47bb-0310-9956-ffa450edef68
---
 src/main/org/apache/tools/ant/Project.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main/org/apache/tools/ant/Project.java b/src/main/org/apache/tools/ant/Project.java
index d1126f0f5..f82dc950d 100644
--- a/src/main/org/apache/tools/ant/Project.java
+++ b/src/main/org/apache/tools/ant/Project.java
@@ -581,7 +581,11 @@ public class Project {
         while (tok.hasMoreTokens()) {
             String part = tok.nextToken();
             if (part.equals("..")) {
-                file = new File(file.getParent());
+                String parentFile = file.getParent();
+                if (parentFile == null) {
+                    throw new BuildException("The file or path you specified (" + fileName + ") is invalid releative to " + baseDir.getAbsolutePath());
+                }
+                file = new File(parentFile);
             } else if (part.equals(".")) {
                 // Do nothing here
             } else {