Re: gcc-bug in gcc-11

[Andrew Pinski <pinskia@gmail.com>]

On Tue, Oct 4, 2022 at 9:18 AM Shivam Rajput via Gcc <gcc@gcc.gnu.org> wrote:
>
> Hey, I was trying to build clang's libcxx on my ubuntu 22.04 and it has
> gcc-11.2 by default most prolly, but while building libcxx there was an
> error about using the deleted function but it seems that overloaded
> resolution in gcc-11 has a bug https://godbolt.org/z/GPTPYaobb , it
> consider wrong overloaded function , although i build libcxx using gcc-12 .

Looks like it has always been a bug in GCC (tried GCC 4.4.7 and up)
and was only fixed in GCC 12.1.0.
I have not looked into which patch fixed this though but you could do
a "git bisect" to find the patch or ask a few people who have
pre-built binaries to find the patch which fixed it.
I doubt we are going to backport the fix to a GCC 11 release either
since it is NOT a regression from an earlier version.

Thanks,
Andrew Pinski

>
> Thanks and regards
> Shivam