issue 3710

added a check to prevent illegal access to operator[] when vector is empty
10 years ago · dcc2512f58
parent 930808c22b
commit dcc2512f58
1 changed files with 1 additions and 1 deletions
--- 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