From 354be115f2ffda491f16e80eacb2dc5f0bd95f67 Mon Sep 17 00:00:00 2001
From: Maria Dimashova <no@email>
Date: Fri, 26 Nov 2010 10:57:01 +0000
Subject: [PATCH] made MaskPredicate safer (#419)

---
 modules/features2d/src/detectors.cpp | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/modules/features2d/src/detectors.cpp b/modules/features2d/src/detectors.cpp
index 3b5f1196b2..96dd1f1e46 100644
--- a/modules/features2d/src/detectors.cpp
+++ b/modules/features2d/src/detectors.cpp
@@ -48,17 +48,16 @@ namespace cv
 /*
  *  FeatureDetector
  */
-struct MaskPredicate
+class MaskPredicate
 {
-    MaskPredicate( const Mat& _mask ) : mask(_mask)
-    {}
-    MaskPredicate& operator=(const MaskPredicate&) { return *this; }
+public:
+    MaskPredicate( const Mat& _mask ) : mask(_mask) {}
     bool operator() (const KeyPoint& key_pt) const
     {
       return mask.at<uchar>( (int)(key_pt.pt.y + 0.5f), (int)(key_pt.pt.x + 0.5f) ) == 0;
     }
-
-    const Mat& mask;
+private:
+	const Mat mask;
 };
 
 FeatureDetector::~FeatureDetector()