C++ PATCH: PR 31388

[Nathan Sidwell]

Mark Mitchell wrote:
> This patch fixes PR c++/31388.  This PR is about the fact that "!0i"
> is not accepted by G++, which is a regression.  I fixed this by
> decreeing that complex types (which are a GNU extension to ISO C++)
> are in fact "arithmetic types" in the sense of the standard.
> Everything else then "just works".
> 
> I think this makes sense: like other arithmetic types, the usual
> arithmetic operations are available, etc.  However, before I check
> this in, I'd like the opinions of my fellow C++ maintainers: does
> anyone see a problem with this approach?

seems fair to me too.

nathan

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