[Bug fortran/92311] Fortran and OpenMP use_device_ptr and OpenACC attach_ptr/dettach_ptr

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92311

--- Comment #9 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to Nichols A. Romero from comment #0)
> The error for the OpenMP is shown below:
>    29 |    !$omp target data use_device_ptr(this_bin)
>       |                                             1
> Error: TARGET DATA must contain at least one MAP clause at (1)

As mentioned, this is OpenMP 5.0 and not yet implemented (for Fortran; it is
already implemented for C/C++).

→ This should be the only remaining issue of the discussion in this PR. 


> For the OpenACC program
>    27 |    !$acc enter data attach(this_bin)
>       |         1

This one _works now_ with GCC 10 (or the being-developed version GCC 11 alias
mainline/main/trunk).

Additionally, the OpenMP 4.5 (but not OpenMP 5.0) mapping of derived-type
components is now supported in GCC 11 (just committed). (For C/C++, the OpenMP
4.5 struct element mapping is supported since GCC 6.)