[Bug c/64748] OpenACC: "is not a variable" error with deviceptr()

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64748

Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-02-10
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |jnorris at gcc dot gnu.org,
                   |                            |tschwinge at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
This also needs to be fixed for C++.

I think I based the OpenACC deviceptr code on c_parser_omp_threadprivate --
does that have the same issue then?  Note that the C++ front end code for
OpenMP threadprivate, gcc/cp/parser.c:cp_parser_omp_threadprivate and
gcc/cp/semantics.c:finish_omp_threadprivate is different from the C code, which
probably also would be good to unify?


I have found the following note in my TODO list, which can then also be
verified/addressed at the same time:

      goto l;
     l:
    #pragma acc parallel deviceptr(l) /* { dg-error "'l' is not a pointer
variable" } */
      ;
    #pragma acc parallel deviceptr(l[1:3])
      /* { dg-error "'l' is not a pointer variable" "" { target *-*-* } 15 } */
      /* { dg-error "expected ')' before '\[' token" "" { target *-*-* } 15 }
*/
      ;