wrap char * with std::string to fix bug reported by Michael
wrap char * with std::string to fix bug reported by Michael

malenie/thrust,Vishwa07/thrust,julianromera/thrust,UIKit0/thrust,bfurtaw/thrust,google-code-export/thrust,h1arshad/thrust,h1arshad/thrust,UIKit0/thrust,UIKit0/thrust,rdmenezes/thrust,google-code-export/thrust,julianromera/thrust,lishi0927/thrust,allendaicool/thrust,Vishwa07/thrust,hemmingway/thrust,julianromera/thrust,Vishwa07/thrust,h1arshad/thrust,bfurtaw/thrust,levendlee/thrust,rdmenezes/thrust,bfurtaw/thrust,lishi0927/thrust,hemmingway/thrust,hemmingway/thrust,bfurtaw/thrust,allendaicool/thrust,Vishwa07/thrust,julianromera/thrust,lishi0927/thrust,UIKit0/thrust,allendaicool/thrust,rdmenezes/thrust,malenie/thrust,malenie/thrust,h1arshad/thrust,lishi0927/thrust,google-code-export/thrust,rdmenezes/thrust,levendlee/thrust,allendaicool/thrust,malenie/thrust,levendlee/thrust,hemmingway/thrust,google-code-export/thrust,levendlee/thrust