[Openmp-dev] The z specifier in %zu is silently accepted (although unsupported) in the device code and does not work

[Itaru Kitayama via Openmp-dev]

I've also checked going back to CUDA 8 works. So as you suggested it is
likely a bug in CUDA 10.0.130
in my programming environment.

On Fri, Mar 6, 2020 at 5:14 AM Alexey.Bataev <a.bataev at outlook.com> wrote:

> Clang converts standard printf into the CUDA-specific printf and then
> relies on the CUDA-provided library that implements this CUDA-specific
> printf function. Seems to me they break something in their library for
> printf.
>
> -------------
> Best regards,
> Alexey Bataev
>
> 05.03.2020 3:11 PM, Itaru Kitayama пишет:
>
> Ok, I see. I stumble upon this “bug” yesterday
> and wasted a couple of hours as it was printing bogus values etc.
>
> In Clang printf support is adjusted with the subtle CUDA version?
>
> On Fri, Mar 6, 2020 at 5:05 Alexey.Bataev <a.bataev at outlook.com> wrote:
>
>> Most probably, this is just a bug in CUDA 10.2, beause with CUDA 8
>> everything works as expected
>>
>> -------------
>> Best regards,
>> Alexey Bataev
>>
>> 05.03.2020 3:03 PM, Itaru Kitayama пишет:
>>
>> Alexey
>> Are you using the CUDA 10.2 or higher?
>>
>> On Fri, Mar 6, 2020 at 5:02 Itaru Kitayama <itaru.kitayama at gmail.com>
>> wrote:
>>
>>> Clang is the latest trunk.
>>>
>>> On Fri, Mar 6, 2020 at 4:58 Alexey.Bataev <a.bataev at outlook.com> wrote:
>>>
>>>> Hmm, for me it works, I see 123, 123 as the output (both, in С and in
>>>> C++).
>>>>
>>>> -------------
>>>> Best regards,
>>>> Alexey Bataev
>>>>
>>>> 05.03.2020 2:54 PM, Itaru Kitayama пишет:
>>>>
>>>> Alexey
>>>> CUDA dorms implement that, and on POWER8
>>>> it just doesn’t work (prints out plain “%zu” literally).
>>>>
>>>> On Fri, Mar 6, 2020 at 0:45 Alexey.Bataev <a.bataev at outlook.com> wrote:
>>>>
>>>>> What's wrong with the z specifier? It works as it should. Why is it
>>>>> unsupported?
>>>>>
>>>>> -------------
>>>>> Best regards,
>>>>> Alexey Bataev
>>>>>
>>>>> 05.03.2020 5:44 AM, Itaru Kitayama via Openmp-dev пишет:
>>>>>
>>>>> Can Clang warn on the wrong use at build time?
>>>>>
>>>>> When a developer writes code like below and build?
>>>>>
>>>>> #include <iostream>
>>>>> int main()
>>>>> {
>>>>>         size_t my_sz = 123;
>>>>> #pragma omp target parallel for map(to: my_sz)
>>>>>     for (int i=0;i<1;i++) {
>>>>>         printf("%zu, %d\n", my_sz, my_sz);
>>>>>     }
>>>>> }
>>>>>
>>>>> _______________________________________________
>>>>> Openmp-dev mailing listOpenmp-dev at lists.llvm.orghttps://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
>>>>>
>>>>>
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