c++/4248: reinterpret_cast in template

Volker.Denkhaus@softwareag.com Volker.Denkhaus@softwareag.com
Thu Sep 6 07:26:00 GMT 2001

>Number:         4248
>Category:       c++
>Synopsis:       reinterpret_cast in template
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Sep 06 07:26:00 PDT 2001
>Originator:     Volker Denkhaus
>Release:        gcc 2.95.3
Suse 7.1 DCOM
I have a problem with a method call after a reinterpret_cats in a template class.

This is the code:
template <class Base>
class CComTearOffObject : public Base
 CComTearOffObject(void* pv)
                ATLASSERT(m_pOwner == NULL);
                this->m_pOwner = reinterpret_cast<CComObject<typename Base::_OwnerClass>*>(p

The AddRef call ends up in a segmentation fault. In the debugger I can see that the address of the function AddRef which can be found in the vtable is calculated wrong.

Has anyone ever had a similar problem? Or is something wrong with the cast?

Volker Denkhaus



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