Collapse the two function pointers into a single one, taking an Op enum. Add a possible return value (void*) and extra argument (also void*). The intent is to allow extensions in a BC way, e.g. cloning. We can't add new function pointers (sizeof changes), so we need to fold everything into a single function. Change-Id: Id0f3f74149c61e4e65622aeabfd2fcea3c6d7fb3 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>