{
// check section title string; note that some versions of OCCT (up to 6.3.1)
// might avoid writing shape section if it is empty
- Standard_Size aPos = theIS.tellg();
+ std::streamoff aPos = theIS.tellg();
TCollection_AsciiString aSectionTitle;
theIS >> aSectionTitle;
if(aSectionTitle.Length() > 0 && aSectionTitle == SHAPESET) {