On Fri, Jul 11, 2025 at 02:11:05PM +0100, Jonathan Wakely wrote:
> On Fri, 11 Jul 2025 at 14:02, Jonathan Wakely <jwak...@redhat.com> wrote:
> >
> > The if-consteval branches in std::make_exception_ptr and
> > std::exception_ptr_cast use a try-catch block, which gives an error for
> > -fno-exceptions. Just make them return a null pointer at compile-time
> > when -fno-exceptions is used, because there's no way to get an active
> > exception with -fno-exceptions.
> >
> > For std::exception_ptr_cast the consteval branch doesn't depend on RTTI
> > being enabled, so we can move the check for __cpp_rtti into the runtime
> > branch. We can also remove the #else group and just fall through to the
> > return nullptr statement if there was no return from whichever branch of
> > the if-consteval was taken.
>
> Actually for exception_ptr_cast maybe we want:
>
> #ifdef __cpp_rtti
> if not consteval {
Agreed, just I think not is never used in libstdc++ headers, while
if !consteval {
is.
Jakub
