On 13/11/2021 09.44, Vladimir Grigoriev via Std-Discussion wrote:
> Within the section 9.2.4 The typedef specifier of the C++ 20 Standard in the example2 of the paragraph 2 there is such an alias declaration
>
> using cell = pair<void*, cell*>; // error
>
> There is said nothing why this declaration is incorrect.

Thanks for the report.

I've created editorial issue https://github.com/cplusplus/draft/issues/5107

Jens