Re: Strange C constructs

Jeremy,


>>> Another question may be easier to answer:
>>>
>>> typedef int (procname)(int arg);
>>>
>>> According to K&R only /pointers/ to procedure-types can be constructed.
>>
>> Hang on. I thought you were a fan of standards?
>>
>>> Does there exist newer specs which allow to typedef procedures
>>> themselves?
>>
>> If you mean C99, then no. If you mean vendor extensions, I cannot
>> think of any.
>
> Hmm? Function types can certainly be typedef-ed in C99 (and C89). I
> do it quite often, in fact, since I dislike hiding the fact that
> there's a pointer involved:
>
> typedef void comparison_t(const void *, const void*);
> void sort(void *sequence, size_t length, comparison_t *compare);


You are right, I was being overly restrictive. Given the above
declarations it is not possible to write:


comparison_t f
{
}

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