[Bug c++/81850] New: OpenMP target enter data compilation issues

["thorstenkurth at me dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81850

            Bug ID: 81850
           Summary: OpenMP target enter data compilation issues
           Product: gcc
           Version: 7.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: thorstenkurth at me dot com
  Target Milestone: ---

Created attachment 41990
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41990&action=edit
Test case

Dear Sir/Madam,

g++ 7.1.1 cannot compile correct OpenMP 4.5 code. I have attached a small
example program I initially developer to demonstrate a compiler bug for XLC.
GCC throws the following error message on compilation:

g++ -O2 -std=c++11 -fopenmp -foffload=nvptx-none -c aclass.cpp -o aclass.o
In file included from aclass.h:2:0,
                 from aclass.cpp:1:
masterclass.h: In member function 'void master::allocate(const unsigned int&)':
masterclass.h:10:50: error: 'master::data' is not a variable in 'map' clause
 #pragma omp target enter data map(alloc: data[0:size*sizeof(double)])
                                          ^~~~
masterclass.h:10:9: error: '#pragma omp target enter data' must contain at
least one 'map' clause
 #pragma omp target enter data map(alloc: data[0:size*sizeof(double)])
         ^~~
masterclass.h: In member function 'void master::deallocate()':
masterclass.h:15:51: error: 'master::data' is not a variable in 'map' clause
 #pragma omp target exit data map(release: data[:0])
                                           ^~~~
masterclass.h:15:9: error: '#pragma omp target exit data' must contain at least
one 'map' clause
 #pragma omp target exit data map(always, release: data[:0])


To me it seems that it cannot recognize the "alloc" clause. 

Best Regards
Thorsten Kurth