Em 02-05-2012 21:42, Andy Walls escreveu:
> On Wed, 2012-05-02 at 19:17 -0300, Mauro Carvalho Chehab wrote:
>
>> We can speed-up the conversions, with something like:
>>
>> enum foo {
>> BAR
>> };
>>
>> if (sizeof(foo) != sizeof(u32))
>> call_compat_logic().
>>
>> I suspect that sizeof() won't work inside a macro.
>
> sizeof() is evaluated at compile time, after preprocessing.
> It should work inside of a macro.
According with Dennis Ritchie, testing for sizeof on a macro never worked:
http://groups.google.com/group/comp.std.c/msg/4852afc61a060d89?dmode=source&pli=1
Regards,
Mauro
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