Problem building libstdc++ for the avr target

[Jonathan Wakely]

On 10/12/20 18:39 +0100, Vladimir V via Libstdc++ wrote:
>Hello.
>
>Could you please have a look at my trivial patch.
>It works as intended with avr-libc and doesn't seem to introduce
>regressions for x86_64 hosts.
>What would be your suggestions for testing?

If you've tested it on AVR then I think that's good enough, as I've
already been testing an identical patch locally :-)

I'll get this committed after the weekend, thanks for the patch!