[Bug c++/13774] New: Member variable cleared in virtual multiple inheritance class

["stuart at personalrobots dot com" <gcc-bugzilla at gcc dot gnu dot org>]

We have a code example with a complex virtual inheritance hierarchy - it has
worked with previous gcc, 3.0 and above, but after installing Fedora the code
crashes. It appears that a pointer gets cleared for no apparent reason and this
causes the crash. We have managed to reproduce the crash with the short file
that I will attach.


Gcc version:
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--disable-checking --with-system-zlib --enable-__cxa_atexit --host=i386-redhat-linux
Thread model: posix
gcc version 3.3.2 20031022 (Red Hat Linux 3.3.2-1)

Compile line is:
mini: mini.cc
        g++ -o mini mini.cc -lstdc++

System is Fedora core 1:
Linux aethon.com 2.4.22-1.2115.nptl #1 Wed Oct 29 15:42:51 EST 2003 i686 i686
i386 GNU/Linux

-- 
           Summary: Member variable cleared in virtual multiple inheritance
                    class
           Product: gcc
           Version: 3.3.2
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: stuart at personalrobots dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13774