On Sun, 21 Dec 2025 at 19:23, Nicholas Vinson <[email protected]> wrote:
>
> On 12/16/25 05:19, Uri Lublin wrote:
> > On Fri, Dec 12, 2025 at 7:56 AM Nicholas Vinson <[email protected]
> > <mailto:[email protected]>> wrote:
> >
> >
> >
> >     On 12/11/25 13:48, Uri Lublin wrote:
> >      >
> >      >
> >      > On Thu, Dec 11, 2025 at 2:38 PM Nicholas Vinson
> >     <[email protected] <mailto:[email protected]>
> >      > <mailto:[email protected] <mailto:[email protected]>>> wrote:
> >      >
> >      >     On 12/11/25 06:55, Frediano Ziglio wrote:
> >      >      > On Sun, 7 Dec 2025 at 12:20, Nicholas Vinson
> >      >     <[email protected] <mailto:[email protected]>
> >     <mailto:[email protected] <mailto:[email protected]>>> wrote:
> >      >      >>
> >      >      >> When building with g++-16, the build fails with the
> >     following error:
> >      >      >>
> >      >      >>      server/tests/test-display-base.cpp:809:5: error:
> >     either all
> >      >     initializer
> >      >      >>      clauses should be designated or none of them should be
> >      >      >>
> >      >      >> This is because g++-16 defaults to c++20 and when using
> >     designated
> >      >      >> initializers with c++20, you don't wrap anonymous union
> >     fields
> >      >     with braces.
> >      >      >>
> >      >      >> Nicholas Vinson (2):
> >      >      >>    m4/spice-compile-warnings.m4: disable -Wmissing-braces
> >      >      >>    test-display-base.cpp: adjust designated init.
> >      >      >>
> >      >      >>   m4/spice-compile-warnings.m4       | 1 +
> >      >      >>   server/tests/test-display-base.cpp | 2 +-
> >      >      >>   2 files changed, 2 insertions(+), 1 deletion(-)
> >      >      >>
> >      >      >
> >      >      > The CI is not that happy. I added some commit to make it pass:
> >      >      > - missing AUTHORS for "make syntax-check"
> >      >      > https://gitlab.freedesktop.org/fziglio/spice/-/commit/
> >     <https://gitlab.freedesktop.org/fziglio/spice/-/commit/>
> >      >     fb018b3fbb26f38b2ffb0ee569d4aafc287fc738 <https://
> >      > gitlab.freedesktop.org/fziglio/spice/-/commit/ <http://
> >     gitlab.freedesktop.org/fziglio/spice/-/commit/>
> >      >     fb018b3fbb26f38b2ffb0ee569d4aafc287fc738>
> >      >      > - too old Fedora (not related to these changes)
> >      >      > https://gitlab.freedesktop.org/fziglio/spice/-/commit/
> >     <https://gitlab.freedesktop.org/fziglio/spice/-/commit/>
> >      >     a4525e204ef8b7e3beb3709823029e27de633d7a <https://
> >      > gitlab.freedesktop.org/fziglio/spice/-/commit/ <http://
> >     gitlab.freedesktop.org/fziglio/spice/-/commit/>
> >      >     a4525e204ef8b7e3beb3709823029e27de633d7a>
> >      >      > - compatibility with pretty old GCC
> >      >      > https://gitlab.freedesktop.org/fziglio/spice/-/ <https://
> >     gitlab.freedesktop.org/fziglio/spice/-/>
> >      >     commit/6a2c24fd5c088cb3b016a40965882e98f010b583 <https://
> >      > gitlab.freedesktop.org/fziglio/spice/-/ <http://
> >     gitlab.freedesktop.org/fziglio/spice/-/>
> >      >     commit/6a2c24fd5c088cb3b016a40965882e98f010b583>
> >      >
> >      >
> >      > Frediano, where did you take the 10 from ?
> >      > Shouldn't it check if the gcc version is 16 (or even 20) ?
> >      >
> >      >
> >      >
> >      >     I'm concerned about the old GCC compatibility commit. I think
> >     it would
> >      >     be more robust if designated initializer feature checks were
> >     added to
> >      > configure.ac <http://configure.ac> <http://configure.ac <http://
> >     configure.ac>> and meson.build instead.
> >      >
> >      >     That way you don't have to worry about how old or new the
> >     compiler
> >      >     is or
> >      >     if it implements the necessary GCC extensions, or implements them
> >      >     correctly.
> >      >
> >      >
> >      > Do you mean compiling a simple program with designated
> >     initializers in
> >      > meson/configure ?
> >
> >     That's exactly what I mean.
> >
> >
> > It is a bit safer, but I think we can trust gcc in this case, like
> > Frediano's patch does.
>
> How about "#if defined __clang__ || defined _MSC_VER || __GNUC__ > 7".
>
> It's a bit more relaxed than Frediano's check and supports MSC 16.1 or
> newer, gcc-7 or newer, and every version of clang > 3 (might support
> some < 3, but godbolt doesn't have anything that old).
>
> Thanks,
> Nicholas Vinson
>

Hi,
   apparently I missed this reply.
It sounds good to me.
Can you send an update?

Frediano

>
> >
> > Thanks,
> >      Uri.
> >
> >
> >     Regards,
> >     Nicholas Vinson
> >
> >      >
> >      > Regards,
> >      >      Uri.
> >      >
> >      >
> >      >     Regards,
> >      >     Nicholas Vinson
> >      >
> >      >      >
> >      >      > Do they sound good?
> >      >      > I suppose the compatibility one could be merged.
> >      >      >
> >      >      > Regards,
> >      >      >    Frediano
> >      >
> >
>

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