[Issue 24117] noreturn can be used as expression

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24117

Nick Treleaven <nick at geany.org> changed:

           What    |Removed                     |Added
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                 CC|                            |nick at geany.org

--- Comment #1 from Nick Treleaven <nick at geany.org> ---
This code:

    auto e = noreturn + 1;

Gets lowered to:

        int e = 1;

Also, `cast(int) E.illegal` is 0.

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