https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92120
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- For OpenMP 5 there is quite a lot of mapping related changes that need to be implemented, first of all, the C/C++ array section support needs to be rewritten because the rules changed there too much and the current limited parsing is not usable, this[:1] needs to be handled (this PR), declare mapper support added, non-contiguous arrays in to/from, etc. This all is deferred for GCC 11.
