[Bug fortran/106730] [OpenMP][valid since 5.0] ICE in install_var_field, at omp-low.cc:797 for 'map(alloc:var) map(to:var)' (more than once in map clause)

["burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106730

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[OpenMP] ICE in             |[OpenMP][valid since 5.0]
                   |install_var_field, at       |ICE in install_var_field,
                   |omp-low.cc:797              |at omp-low.cc:797 for
                   |                            |'map(alloc:var)
                   |                            |map(to:var)' (more than
                   |                            |once in map clause)

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Okay – that's the
  ‘member’ appears more than once in map clauses
issue

For C/C++, there is this error – for Fortran not:
  error: ‘member’ appears more than once in map clauses
(same for 'a' and 'scalar') using the C testcase at
https://github.com/SOLLVE/sollve_vv/blob/master/tests/5.0/target/test_target_mapping_before_alloc.c
for the C/C++ testcase.

I think one pending patch was addressing on this.
Indeed, using devel/omp/gcc-12 (OG12), it compiles + runs for Fortran -
but still fails for C/C++ with the "more than once" error.

I think it is part of the following patch set:
* [PATCH 00/16] OpenMP: lvalues in "map" clauses and struct handling rework
   https://gcc.gnu.org/pipermail/gcc-patches/2021-December/586600.html
   and January + February updates (search for metadirective)
+ patch review end of May, e.g.
   https://gcc.gnu.org/pipermail/gcc-patches/2022-May/595762.html (+ 4 more
emails)