[Bug libgomp/113867] [14 Regression][OpenMP] Wrong code with mapping pointers in structs

[burnus at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113867

--- Comment #4 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Also not handled:
  struct s { int *p; } s1;
  ...
  #pragma omp target map(s1.p[:N])
    p[0] = p[N-1] = 99;

Here, the pointer attachment is missing.  See also PR113724 's attachment 57407
for a testcase for this and (some) other issues.

TODO:
- Fix the extra struct issue (→ this patch or other solution)
- Fix the missing attachment issue (this comment's example)
- Audit whether other changes are required.