From: Steven Jenkins <steven.jenkins@...>
Date: 2006-12-25T02:04:03+09:00
Subject: Re: System V IPC in standard library?

Nobuyoshi Nakada wrote:
> What about:
> 
>   typedef #{type} conftest_type;
>   int conftestval[sizeof(conftest_type)?1:-1];
>   int main() {return 0;}
>   int t() {return conftestval[0];}

That should work.

> Though it may be enough just by removing static of conftestval.
> 
>> Beyond optimization, however, there's a deeper problem, at least in
>> principle. The C standard specifies only how a conforming implementation
>> must behave when presented with a conforming input. Such an
>> implementation is not required to diagnose errors or fail when presented
>> with a non-conforming input. Given that, it seems problematic to detect
>> a missing type by generating a compile-time error. I can't think of
>> another way, unfortunately.
> 
> You're right, but I can't imagine such compiler to be useful.
> The current assumption would be enough until somebody complains
> about it actually.

Yes, I agree.

Do you have an opinion about including sysvipc in the standard library?

Steve