Re: Oh dear. I regret to inform you that commit 'RAII-fy make_cleanup_restore_current_thread & friends' might be unfortunate

[Pedro Alves <palves@redhat.com>]

On 05/04/2017 07:22 PM, Pedro Alves wrote:

> AFAICS so far, this is a false positive.
> 
> Not sure what to do.  I wouldn't want to force-memset
> the optional's storage to work around it, which would be
> a pessimization to quiet a warning.  From above, we see that
> that wouldn't work when we later start using std::optional.
> 
> There's a bug open about this (for boost::optional, but most
> probably the exact same):
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78044

I've tried the reproducer there with the obvious change to use
std::optional and that does not warn.  So this is a different,
though related issue.

Or maybe there's really something wrong with the gdb code
that is escaping me.

Thanks,
Pedro Alves