On 21/04/2022 14:32, Vivek Pandey via Std-Discussion wrote:
> Please let us know how we can use 'using' clause to declare a function
> pointer to a function that does not return, so that this warning does
> not show up.
>
>
> When we can create aliases for normal function pointers with 'using'
> then why does it give warning "warning: function declared 'noreturn'
> should not return [-Winvalid-noreturn]" for a function declared as
> [[noreturn]].
>
> Any solution that can resolve it? Can this be part of C++ standards?

Currently there is no way to mark things such as pointers to functions
as [[noreturn]] (meaning something like "this pointer points to a
function that does not return").

There is also no way of doing so using any other stdlib facility such as
std::function. I suspect that a proper solution would require making
[[noreturn]] part of the type system, which sounds undesirable.

The easiest solution *by far* is to add a std::unreachable() call at the
end of CallIDontReturn(), since that's what you mean.

HTH,

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