I read about this topic.
Arnold wrote:
This isn't valid C. The preprocessor doesn't know about sizeof.
I found this:
C99 doesn't require support for "sizeof" in preprocessor conditionals
and gcc for example doesn't support it.
Indeed this snippet compiles and run like a charm:
int main()
> {
> #define big sizeof(size_t)
> printf("big boss %zd\n", big);
> return 0;
> }
>
Any suggestion how to check with macro the sizeof size_t ?
Should I check the max value of a size_t to infer its size ?
M
On Thu, 21 May 2020 at 14:17, Massimo Sala <massimo.sala...@gmail.com>
wrote:
> Ops.
>
> Pls any suggestion how to check with macro the sizeof size_t ?
> Should I check the max value of a size_t to infer its size ?
> I cannot find how to.
>
> M
>
> On Thu, 21 May 2020 at 14:08, <arn...@skeeve.com> wrote:
>
>> This isn't valid C. The preprocessor doesn't know about sizeof.
>>
>> Arnold
>>
>> Massimo Sala <massimo.sala...@gmail.com> wrote:
>>
>> > Hi
>> >
>> > Compiling the attached sample, tcc bails out with "error: function
>> pointer
>> > expected"
>> > Pls, how can I fix ?
>> > Best regards, Massimo
>> >
>> > #include <stdio.h>
>> > #include <stdlib.h>
>> > #include <string.h>
>> >
>> > int main()
>> > {
>> > printf("ciao\n");
>> > #if sizeof(size_t) == 64
>> > printf("big boss\n");
>> > #endif
>> > return 0;
>> > }
>>
>
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