On Thu, 10 Mar 2022 at 12:16, Jonathan Wakely wrote:
>
> On Thu, 10 Mar 2022 at 11:53, Jonathan Wakely via Libstdc++
> <libstdc++@gcc.gnu.org> wrote:
> >
> > Tested x86_64-linux, and basic soundness check on vax-dec-netbsdelf.
>
> But apparently not enough of a soundness check, because
> isnan(__builtin_nan("")) is true for VAX, so GCC seems to have a NaN
> pattern, despite what I read online about the format.
>
> Fix on the way ...

Here's the fix that adds support for VAX NaN (and works around
PR104865 which I discovered while trying to make this work).

Tested x86_64-linux, and slightly tested on vax-dec-netbsdelf again.

Pushed to trunk.