Virtual Base Bug

[Martin v. Loewis]

> Anyway, an ABI change is planned for GCC in the not-so-distant future,
> and, if nobody finishes Martin's fix for the vtable problem by then,
> that would be a good moment to switch back to the slower yet fully
> correct implementation.  I.e., since we're going to have to face a
> large binary incompatibility problem, let's face it just once.

Such an ABI change would affect glibc as well, because of the shared
libio code. Breaking the ABI for C++ is something that C++ users are
used to. Breaking the C ABI is something that results in public
uprise. As for the fix: I definitely want to complete it, it just gets
delayed again and again.

Regards,
Martin