Problem building libstdc++ for the avr target

[Jonathan Wakely]

On 25/03/21 22:37 +0100, Vladimir V via Libstdc++ wrote:
>Thank you for the quick reply.
>
>I am wondering if the freestanding libstdc++ requires that only
>freestanding subset of the underlying libc is used?

The freestanding library is always allowed to provide more features
than the minimum set required. So it is certainly possible to expose
the whole of the libc <stdlib.h> through <cstdlib> if we wish to.

We shouldn't do that at this stage of the GCC 11 cycle but we could
consider it for GCC 12.

Does the change I pushed earlier solve your build error with
new_opa.cc though?