diff -Naur cpik-0.7.2-4-orig/utility.h cpik-0.7.2-4/utility.h
--- cpik-0.7.2-4-orig/utility.h	2017-12-03 03:47:35.302504007 +0100
+++ cpik-0.7.2-4/utility.h	2017-12-03 03:47:59.537116442 +0100
@@ -75,7 +75,7 @@
     static bool stringTo ( const string& s, T& result )
     {
       istringstream is ( s ) ;
-      return is >> result ;
+      return static_cast<bool>(is >> result);
     }
 
     /** generic conversion from T to string  */