issue 3710

added a check to prevent illegal access to operator[] when vector is empty

issue 3710
added a check to prevent illegal access to operator[] when vector is empty
dcc2512f · Naer Chang · 930808c2 · dcc2512f
Commit dcc2512f authored Mar 14, 2015 by Naer Chang
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cascadedetect.cpp modules/objdetect/src/cascadedetect.cpp +1 -1

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--- a/modules/objdetect/src/cascadedetect.cpp
+++ b/modules/objdetect/src/cascadedetect.cpp
@@ -1268,7 +1268,7 @@ void CascadeClassifierImpl::detectMultiScaleNoGrouping( InputArray _image, std::
        scales.push_back((float)factor);
    }
-    if( !featureEvaluator->setImage(gray, scales) )
+	if ( scales.size() == 0 || !featureEvaluator->setImage(gray, scales) )
        return;
    // OpenCL code