This is the mail archive of the
mailing list for the GCC project.
Re: gcc 3.0.1 & C++ ABI issues
>>>>> "Nathan" == Nathan Sidwell <email@example.com> writes:
> Jason Merrill wrote:
>> >>>>> "Mark" == Mark Mitchell <firstname.lastname@example.org> writes:
>> > What do you think we should do in the 3.0.1 time frame? Can we get
>> > a reasonably safe patch that will fix the correctness issue and
>> > not cause the (minor) pessimization? (This would clearly be the
>> > ideal solution.)
>> I think a patch that just disables the optimization for the case of copying
>> an lvalue of empty class type would be fine for 3.0.1.
> This is insufficient. I attach a test case where we assign a
> temporary into an empy base, and clobber what it overlays.
Yes, your change to the assignment case is good; I was only thinking about
initialization. The case I still want to optimize is the case of
initializing an empty class object from a temporary.