From 3f2e24cf5d35727037e02022d2622089563c6745 Mon Sep 17 00:00:00 2001
From: srowen <srowen@59b500cc-1b3d-0410-9834-0bbf25fbcc57>
Date: Thu, 6 Nov 2008 19:14:48 +0000
Subject: [PATCH] Small additional error check in decoder

git-svn-id: http://zxing.googlecode.com/svn/trunk@674 59b500cc-1b3d-0410-9834-0bbf25fbcc57
---
 core/src/com/google/zxing/datamatrix/detector/Detector.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/src/com/google/zxing/datamatrix/detector/Detector.java b/core/src/com/google/zxing/datamatrix/detector/Detector.java
index 28c727e0..aa0b426f 100644
--- a/core/src/com/google/zxing/datamatrix/detector/Detector.java
+++ b/core/src/com/google/zxing/datamatrix/detector/Detector.java
@@ -129,6 +129,10 @@ public final class Detector {
       }
     }
 
+    if (maybeTopLeft == null || bottomLeft == null || maybeBottomRight == null) {
+      throw new ReaderException("Could not find three corners");
+    }
+
     // Bottom left is correct but top left and bottom right might be switched
     ResultPoint[] corners = new ResultPoint[] { maybeTopLeft, bottomLeft, maybeBottomRight };
     // Use the dot product trick to sort them out
-- 
2.20.1