Re: gcc-15/16 compiling the std module and the --with-default-libstdcxx-abi compiler flag

On Mon, 17 Nov 2025 at 14:26, Jonathan Wakely <[email protected]> wrote:
>
> On Mon, 17 Nov 2025 at 14:12, John Fourkiotis via Gcc-help
> <[email protected]> wrote:
> >
> > Hi,
> >
> > I tried to compile the std module using the latest gcc sources, by using :
> >
> > g++ -std=c++23 -fmodules -fsearch-include-path -c bits/std.cc
> >
> > and it worked OK. I've tried to compile some simple programs with it, and
> > it worked as expected.
> >
> > However, when I build the compiler with the option
> >
> > --with-default-libstdcxx-abi = gcc4-compatible
> >
> > The std module failed with various compiler errors. I guess this is
> > something to be expected, but I would like to ask if it is also something
> > that may be "fixed" in the future or not.
>
>
> It's a bug, and so if somebody reports it, it's likely to be fixed,
> and if nobody reports it, then it's unlikely to be fixed.
>
> See https://gcc.gnu.org/bugs/ for more info on reporting, thanks!

Actually in this case the fix is trivial and I'll push it later today.