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

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

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

            Bug ID: 64748
           Summary: OpenACC: "is not a variable" error with deviceptr()
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Keywords: openacc, rejects-valid
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org

From https://github.com/jefflarkin/openacc-interoperability/

The following program seems to compile with PGI's and Cray's compilers. With
GCC, it shows the odd:

foo.c:3:30: error: âarrâ is not a variable
 #pragma acc kernels deviceptr(arr)
                              ^

void set(int n, float val, float * restrict arr)
{
#pragma acc kernels deviceptr(arr)
  {
    for(int i=0; i<n; i++)
    {
      arr[i] = val;
    }
  }
}