[PATCH] support: Define support_static_assert for use from C and C++

[Florian Weimer]

On 01/01/2018 12:40 AM, Paul Eggert wrote:
> Florian Weimer wrote:
>> _Static_assert is reserved in C++ as well, so I don't want to touch 
>> it. The GCC headers might eventually use it in a way which is not 
>> strictly equivalent to static_assert.
> 
> If we don't care about the difference (what is it, by the way?), then 

Later C++ versions support a one-argument form.  The set of accepted 
expressions varies as well, but I think the C++ variant has a superset, 
so we should be okay.

> something like this should work:
> 
> #ifndef __cplusplus
> # define static_assert _Static_assert
> #endif
> 
> since "static_assert" is not reserved in C.
> 
> I wish these committees would coordinate better....

At least we control the definition of static_assert in C mode.  I'm 
still unhappy that we override headers from support/.  In this case, it 
is probably harmless, but in general, I really dislike this approach, 
which is why I invented support_static_assert.

Thanks,
Florian
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