ROOT-7825: dereference address for "*&".

bindings/pyroot/src/Converters.cxx

@@ -1021,7 +1021,7 @@ Bool_t PyROOT::TCppObjectPtrConverter::SetArg(
 
    // set pointer (may be null) and declare success
       para.fValue.fVoidp = &((ObjectProxy*)pyobject)->fObject;
-      para.fTypeCode = 'p';
+      para.fTypeCode = fIsReference ? 'V' : 'p';
       return kTRUE;
    }
 
@@ -1372,7 +1372,7 @@ PyROOT::TConverter* PyROOT::CreateConverter( const std::string& fullType, Long_t
         else
           // -- CLING WORKAROUND
         if ( cpd == "**" || cpd == "*&" || cpd == "&*" )
-          result = new TCppObjectPtrConverter( klass, control );
+          result = new TCppObjectPtrConverter( klass, control, cpd[1] == '&');
         else if ( cpd == "*" && size <= 0 )
           result = new TCppObjectConverter( klass, control );
         else if ( cpd == "&" )

bindings/pyroot/src/Converters.h

@@ -209,12 +209,16 @@ namespace PyROOT {
 
    class TCppObjectPtrConverter : public TCppObjectConverter {
    public:
-      using TCppObjectConverter::TCppObjectConverter;
+      TCppObjectPtrConverter( Cppyy::TCppType_t klass, Bool_t keepControl, Bool_t isReference) :
+         TCppObjectConverter(klass, keepControl),
+         fIsReference(isReference) {}
 
    public:
       virtual Bool_t SetArg( PyObject*, TParameter&, TCallContext* ctxt = 0 );
       virtual PyObject* FromMemory( void* address );
       virtual Bool_t ToMemory( PyObject* value, void* address );
+   protected:
+      Bool_t fIsReference;
    };
 
    class TCppObjectArrayConverter : public TCppObjectConverter {