[Bug c++/43486] Preserve variable-use locations

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43486

--- Comment #20 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Thomas Schwinge
<tschwinge@gcc.gnu.org>:

https://gcc.gnu.org/g:25b61f935a8eca56c68c8587fc8915797250bb30

commit r9-9073-g25b61f935a8eca56c68c8587fc8915797250bb30
Author: Thomas Schwinge <thomas@codesourcery.com>
Date:   Wed Nov 25 20:36:55 2020 +0100

    Don't create location wrapper nodes within OpenACC clauses

    This fixes a GCC 11, 10, 9 regression introduced by commit
    dfd7fdca2ac17d8b823a16700525824ca312ade0 (Subversion r267272) "C++: more
    location wrapper nodes (PR c++/43064, PR c++/43486)".  But: this isn't
    intending to blame David, because back then, the problem hasn't been
visible in
    the testsuite (or else I'm sure would've been addressed right away) because
of
    our all dear friend: missing testsuite coverage.  Thus, for GCC 8, I'm
likewise
    enhancing the testsuite, without the C++ front end code changes.

    I actually had presumed that there may be an issue for OpenACC:
    <http://mid.mail-archive.com/874lb9qr2u.fsf@euler.schwinge.homeip.net>, so
here
    we are, two years (and many "wasted" hours...) later...

            gcc/cp/
            * parser.c (cp_parser_omp_var_list_no_open): Assert that array
            section's 'low_bound', 'length' are not location wrapper nodes.
            (cp_parser_oacc_all_clauses, cp_parser_oacc_cache): Instantiate
            'auto_suppress_location_wrappers'.
            gcc/testsuite/
            * c-c++-common/goacc/cache-3-1.c: New.
            * c-c++-common/goacc/cache-3-2.c: Likewise.
            * c-c++-common/goacc/data-clause-1.c: Likewise.
            * c-c++-common/goacc/data-clause-2.c: Likewise.
            * c-c++-common/gomp/map-1.c: Adjust.
            * c-c++-common/gomp/map-2.c: Likewise.
            * g++.dg/goacc/cache-3-1.C: New.
            * g++.dg/goacc/cache-3-2.C: Likewise.
            * g++.dg/goacc/data-clause-1.C: Likewise.
            * g++.dg/goacc/data-clause-2.C: Likewise.
            * g++.dg/gomp/map-1.C: Adjust.
            * g++.dg/gomp/map-2.C: Likewise.

    Reported-by: Sandra Loosemore <sandra@codesourcery.com>
    (cherry picked from commit c0c7270cc4efd896fe99f8ad5409dbef089a407f)