Hi Julian, Tobias!

On 2020-06-24T19:32:09+0200, Tobias Burnus <tob...@codesourcery.com> wrote:
> (OpenMP 5 extends this a lot, but this is about OpenMP 4.5.
> It touches code which is also used by OpenACC's attach/detach.)
>
> @OpenACC/Julian: I think the character attach/detach for
> deferred-length strings does not work properly with OpenACC;
> I did not touch this code – but I think it needs some love.

Please file a PR.

> This code adds support for
>    map(dt%comp, dt%comp2)
> where "comp" can be either a nonpointer, nonallocatable element
> scalar, array or array section. Or it can be a pointer - where
> character strings are one complication as for deferred-length
> ones, the length is stored in an extra DT component.
>
> While testing, I encountered two bugs, one relating to kind=4
> character string (patch pending review; PR95837)
> not part of testcase) and one related to deferred-length
> character strings (commented in the test case; larger issue;
> PR95868).
>
> Like always, some more tests/testcase probably would not harm.
>
> Regarding the patch:
>
> (a) openmp.c:
> This enabled component matching for 'map(' and
> piggybacks on the OpenACC code for the checks. I think that
> some additional checks might be useful – and I hope that no
> check is too strict.
> The "depend" clause was excluded as one otherwise gets a
> testsuite fails due to the is-contiguous check.
>
> (b) trans-openmp.c:
> - gfc_trans_omp_clauses now has a "bool openacc".
> - GOMP_MAP_ATTACH_DETACH is replaced by GOMP_MAP_ALWAYS_POINTER
> - For arrays, the mapping of the descriptor is squeezed before
>    "node" which contains the data transfer (var.desc.data mapping
>    followed by the always_pointer for the mapping).
>    In this array case, the latter gets a pointless cast in order
>    to prevent that for both var.desc and var.desc.data memory gets
>    allocated in the struct.
>    → That's also the reason the big switch table is moved up.
> - For deferred-length strings, the string-length is in an extra
>    struct element (derived-type component) and will be mapped in
>    addition.
> - Bugs in the previous version:
>    * gfc_trans_omp_array_section for "element == true", the size
>      of a pointer instead of the size of the element was mapped.
>    * For string variables (with constant length) the kind=4 was
>      not properly handled.
>    * Allocatable scalars were not handled – missing second clause
>      for the always_pointer (and attach_detach, I assume)

I understand correctly that your remark "Bugs in the previous version"
translates to "bugs still existing on releases/gcc-10 branch for OpenACC
'attach'/'detach'"?  Should we thus backport to releases/gcc-10 branch
this commit 102502e32ea4e8a75d6b252ba319d09d735d9aa7 "[OpenMP, Fortran]
Add structure/derived-type element mapping", and fixup commit
524862db444b6544c6dc87c5f06f351100ecf50d "Fix goacc/finalize-1.f tree
dump-scanning for -m32"?


Grüße
 Thomas


> Comments, remarks, suggestions?
> Otherwise: OK for the trunk?

> [OpenMP, Fortran] Add structure/derived-type element mapping
>
> gcc/fortran/ChangeLog:
>
>       * openmp.c (gfc_match_omp_clauses): Match also derived-type
>       component refs in OMP_CLAUSE_MAP.
>       (resolve_omp_clauses): Resolve those.
>       * trans-openmp.c (gfc_trans_omp_array_section, gfc_trans_omp_clauses):
>       Handle OpenMP structure-element mapping.
>       (gfc_trans_oacc_construct, gfc_trans_oacc_executable_directive,
>       (gfc_trans_oacc_combined_directive, gfc_trans_oacc_declare): Update
>       add openacc=true in gfc_trans_omp_clauses call.
>
> gcc/testsuite/ChangeLog:
>
>       * gfortran.dg/goacc/finalize-1.f: Update dump scan pattern.
>       * gfortran.dg/gomp/map-1.f90: Update dg-error.
>       * gfortran.dg/gomp/map-2.f90: New test.
>
>
> libgomp/ChangeLog:
>
>       * testsuite/libgomp.fortran/struct-elem-map-1.f90: New test.
>
>  gcc/fortran/openmp.c                               |   5 +-
>  gcc/fortran/trans-openmp.c                         | 332 
> +++++++++++++++------
>  gcc/testsuite/gfortran.dg/goacc/finalize-1.f       |   4 +-
>  gcc/testsuite/gfortran.dg/gomp/map-1.f90           |  35 +--
>  gcc/testsuite/gfortran.dg/gomp/map-2.f90           |   6 +
>  .../libgomp.fortran/struct-elem-map-1.f90          | 331 ++++++++++++++++++++
>  6 files changed, 595 insertions(+), 118 deletions(-)
>
> diff --git a/gcc/fortran/openmp.c b/gcc/fortran/openmp.c
> index e681903c7c2..7de2f6e1b1d 100644
> --- a/gcc/fortran/openmp.c
> +++ b/gcc/fortran/openmp.c
> @@ -1464,7 +1464,7 @@ gfc_match_omp_clauses (gfc_omp_clauses **cp, const 
> omp_mask mask,
>             head = NULL;
>             if (gfc_match_omp_variable_list ("", &c->lists[OMP_LIST_MAP],
>                                              false, NULL, &head,
> -                                            true) == MATCH_YES)
> +                                            true, true) == MATCH_YES)
>               {
>                 gfc_omp_namelist *n;
>                 for (n = *head; n; n = n->next)
> @@ -4553,7 +4553,7 @@ resolve_omp_clauses (gfc_code *code, gfc_omp_clauses 
> *omp_clauses,
>
>                   /* Look through component refs to find last array
>                      reference.  */
> -                 if (openacc && resolved)
> +                 if (resolved)
>                     {
>                       /* The "!$acc cache" directive allows rectangular
>                          subarrays to be specified, with some restrictions
> @@ -4563,6 +4563,7 @@ resolve_omp_clauses (gfc_code *code, gfc_omp_clauses 
> *omp_clauses,
>                          arr(-n:n,-n:n) could be contiguous even if it looks
>                          like it may not be.  */
>                       if (list != OMP_LIST_CACHE
> +                         && list != OMP_LIST_DEPEND
>                           && !gfc_is_simply_contiguous (n->expr, false, true)
>                           && gfc_is_not_contiguous (n->expr))
>                         gfc_error ("Array is not contiguous at %L",
> diff --git a/gcc/fortran/trans-openmp.c b/gcc/fortran/trans-openmp.c
> index 7e2f6256c43..3f4f06375ef 100644
> --- a/gcc/fortran/trans-openmp.c
> +++ b/gcc/fortran/trans-openmp.c
> @@ -2087,10 +2087,11 @@ static vec<tree, va_heap, vl_embed> *doacross_steps;
>  static void
>  gfc_trans_omp_array_section (stmtblock_t *block, gfc_omp_namelist *n,
>                            tree decl, bool element, gomp_map_kind ptr_kind,
> -                          tree node, tree &node2, tree &node3, tree &node4)
> +                          tree &node, tree &node2, tree &node3, tree &node4)
>  {
>    gfc_se se;
>    tree ptr, ptr2;
> +  tree elemsz = NULL_TREE;
>
>    gfc_init_se (&se, NULL);
>
> @@ -2099,7 +2100,8 @@ gfc_trans_omp_array_section (stmtblock_t *block, 
> gfc_omp_namelist *n,
>        gfc_conv_expr_reference (&se, n->expr);
>        gfc_add_block_to_block (block, &se.pre);
>        ptr = se.expr;
> -      OMP_CLAUSE_SIZE (node) = TYPE_SIZE_UNIT (TREE_TYPE (ptr));
> +      OMP_CLAUSE_SIZE (node) = TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (ptr)));
> +      elemsz = OMP_CLAUSE_SIZE (node);
>      }
>    else
>      {
> @@ -2109,14 +2111,15 @@ gfc_trans_omp_array_section (stmtblock_t *block, 
> gfc_omp_namelist *n,
>        gfc_add_block_to_block (block, &se.pre);
>        OMP_CLAUSE_SIZE (node) = gfc_full_array_size (block, se.expr,
>                                                   GFC_TYPE_ARRAY_RANK (type));
> -      tree elemsz = TYPE_SIZE_UNIT (gfc_get_element_type (type));
> +      elemsz = TYPE_SIZE_UNIT (gfc_get_element_type (type));
>        elemsz = fold_convert (gfc_array_index_type, elemsz);
>        OMP_CLAUSE_SIZE (node) = fold_build2 (MULT_EXPR, gfc_array_index_type,
>                                           OMP_CLAUSE_SIZE (node), elemsz);
>      }
> -  gfc_add_block_to_block (block, &se.post);
> +  gcc_assert (se.post.head == NULL_TREE);
>    ptr = fold_convert (build_pointer_type (char_type_node), ptr);
>    OMP_CLAUSE_DECL (node) = build_fold_indirect_ref (ptr);
> +  ptr = fold_convert (ptrdiff_type_node, ptr);
>
>    if (POINTER_TYPE_P (TREE_TYPE (decl))
>        && GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (TREE_TYPE (decl)))
> @@ -2129,28 +2132,71 @@ gfc_trans_omp_array_section (stmtblock_t *block, 
> gfc_omp_namelist *n,
>        OMP_CLAUSE_SIZE (node4) = size_int (0);
>        decl = build_fold_indirect_ref (decl);
>      }
> -  ptr = fold_convert (sizetype, ptr);
> +  else if (ptr_kind == GOMP_MAP_ALWAYS_POINTER
> +        && n->expr->ts.type == BT_CHARACTER
> +        && n->expr->ts.deferred)
> +    {
> +      gomp_map_kind map_kind;
> +      if (GOMP_MAP_COPY_TO_P (OMP_CLAUSE_MAP_KIND (node)))
> +     map_kind = GOMP_MAP_TO;
> +      else if (OMP_CLAUSE_MAP_KIND (node) == GOMP_MAP_RELEASE
> +            || OMP_CLAUSE_MAP_KIND (node) == GOMP_MAP_DELETE)
> +     map_kind = OMP_CLAUSE_MAP_KIND (node);
> +      else
> +     map_kind = GOMP_MAP_ALLOC;
> +      gcc_assert (se.string_length);
> +      node4 = build_omp_clause (input_location, OMP_CLAUSE_MAP);
> +      OMP_CLAUSE_SET_MAP_KIND (node4, map_kind);
> +      OMP_CLAUSE_DECL (node4) = se.string_length;
> +      OMP_CLAUSE_SIZE (node4) = TYPE_SIZE_UNIT (gfc_charlen_type_node);
> +    }
>    if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (decl)))
>      {
> +      tree desc_node;
>        tree type = TREE_TYPE (decl);
>        ptr2 = gfc_conv_descriptor_data_get (decl);
> -      node2 = build_omp_clause (input_location,
> -                             OMP_CLAUSE_MAP);
> -      OMP_CLAUSE_SET_MAP_KIND (node2, GOMP_MAP_TO_PSET);
> -      OMP_CLAUSE_DECL (node2) = decl;
> -      OMP_CLAUSE_SIZE (node2) = TYPE_SIZE_UNIT (type);
> +      desc_node = build_omp_clause (input_location, OMP_CLAUSE_MAP);
> +      OMP_CLAUSE_DECL (desc_node) = decl;
> +      OMP_CLAUSE_SIZE (desc_node) = TYPE_SIZE_UNIT (type);
> +      if (ptr_kind == GOMP_MAP_ALWAYS_POINTER)
> +     {
> +       OMP_CLAUSE_SET_MAP_KIND (desc_node, GOMP_MAP_TO);
> +       node2 = node;
> +       node = desc_node;  /* Needs to come first.  */
> +     }
> +      else
> +     {
> +       OMP_CLAUSE_SET_MAP_KIND (desc_node, GOMP_MAP_TO_PSET);
> +       node2 = desc_node;
> +     }
>        node3 = build_omp_clause (input_location,
>                               OMP_CLAUSE_MAP);
>        OMP_CLAUSE_SET_MAP_KIND (node3, ptr_kind);
>        OMP_CLAUSE_DECL (node3)
>       = gfc_conv_descriptor_data_get (decl);
> +      /* This purposely does not include GOMP_MAP_ALWAYS_POINTER.  The extra
> +      cast prevents gimplify.c from recognising it as being part of the
> +      struct – and adding an 'alloc: for the 'desc.data' pointer, which
> +      would break as the 'desc' (the descriptor) is also mapped
> +      (see node4 above).  */
>        if (ptr_kind == GOMP_MAP_ATTACH_DETACH)
>       STRIP_NOPS (OMP_CLAUSE_DECL (node3));
>      }
>    else
>      {
>        if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE)
> -     ptr2 = build_fold_addr_expr (decl);
> +     {
> +       tree offset;
> +       ptr2 = build_fold_addr_expr (decl);
> +       offset = fold_build2 (MINUS_EXPR, ptrdiff_type_node, ptr,
> +                             fold_convert (ptrdiff_type_node, ptr2));
> +       offset = build2 (TRUNC_DIV_EXPR, ptrdiff_type_node,
> +                        offset, fold_convert (ptrdiff_type_node, elemsz));
> +       offset = build4_loc (input_location, ARRAY_REF,
> +                            TREE_TYPE (TREE_TYPE (decl)),
> +                            decl, offset, NULL_TREE, NULL_TREE);
> +       OMP_CLAUSE_DECL (node) = offset;
> +     }
>        else
>       {
>         gcc_assert (POINTER_TYPE_P (TREE_TYPE (decl)));
> @@ -2161,14 +2207,15 @@ gfc_trans_omp_array_section (stmtblock_t *block, 
> gfc_omp_namelist *n,
>        OMP_CLAUSE_SET_MAP_KIND (node3, ptr_kind);
>        OMP_CLAUSE_DECL (node3) = decl;
>      }
> -  ptr2 = fold_convert (sizetype, ptr2);
> -  OMP_CLAUSE_SIZE (node3)
> -    = fold_build2 (MINUS_EXPR, sizetype, ptr, ptr2);
> +  ptr2 = fold_convert (ptrdiff_type_node, ptr2);
> +  OMP_CLAUSE_SIZE (node3) = fold_build2 (MINUS_EXPR, ptrdiff_type_node,
> +                                      ptr, ptr2);
>  }
>
>  static tree
>  gfc_trans_omp_clauses (stmtblock_t *block, gfc_omp_clauses *clauses,
> -                    locus where, bool declare_simd = false)
> +                    locus where, bool declare_simd = false,
> +                    bool openacc = false)
>  {
>    tree omp_clauses = NULL_TREE, chunk_size, c;
>    int list, ifc;
> @@ -2483,6 +2530,67 @@ gfc_trans_omp_clauses (stmtblock_t *block, 
> gfc_omp_clauses *clauses,
>             tree node2 = NULL_TREE;
>             tree node3 = NULL_TREE;
>             tree node4 = NULL_TREE;
> +
> +           switch (n->u.map_op)
> +             {
> +             case OMP_MAP_ALLOC:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ALLOC);
> +               break;
> +             case OMP_MAP_IF_PRESENT:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_IF_PRESENT);
> +               break;
> +             case OMP_MAP_ATTACH:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ATTACH);
> +               break;
> +             case OMP_MAP_TO:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_TO);
> +               break;
> +             case OMP_MAP_FROM:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FROM);
> +               break;
> +             case OMP_MAP_TOFROM:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_TOFROM);
> +               break;
> +             case OMP_MAP_ALWAYS_TO:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ALWAYS_TO);
> +               break;
> +             case OMP_MAP_ALWAYS_FROM:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ALWAYS_FROM);
> +               break;
> +             case OMP_MAP_ALWAYS_TOFROM:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ALWAYS_TOFROM);
> +               break;
> +             case OMP_MAP_RELEASE:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_RELEASE);
> +               break;
> +             case OMP_MAP_DELETE:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_DELETE);
> +               break;
> +             case OMP_MAP_DETACH:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_DETACH);
> +               break;
> +             case OMP_MAP_FORCE_ALLOC:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_ALLOC);
> +               break;
> +             case OMP_MAP_FORCE_TO:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_TO);
> +               break;
> +             case OMP_MAP_FORCE_FROM:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_FROM);
> +               break;
> +             case OMP_MAP_FORCE_TOFROM:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_TOFROM);
> +               break;
> +             case OMP_MAP_FORCE_PRESENT:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_PRESENT);
> +               break;
> +             case OMP_MAP_FORCE_DEVICEPTR:
> +               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_DEVICEPTR);
> +               break;
> +             default:
> +               gcc_unreachable ();
> +             }
> +
>             tree decl = gfc_trans_omp_variable (n->sym, false);
>             if (DECL_P (decl))
>               TREE_ADDRESSABLE (decl) = 1;
> @@ -2491,7 +2599,7 @@ gfc_trans_omp_clauses (stmtblock_t *block, 
> gfc_omp_clauses *clauses,
>                     && n->expr->ref->u.ar.type == AR_FULL))
>               {
>                 tree present = gfc_omp_check_optional_argument (decl, true);
> -               if (n->sym->ts.type == BT_CLASS)
> +               if (openacc && n->sym->ts.type == BT_CLASS)
>                   {
>                     tree type = TREE_TYPE (decl);
>                     if (n->sym->attr.optional)
> @@ -2719,8 +2827,42 @@ gfc_trans_omp_clauses (stmtblock_t *block, 
> gfc_omp_clauses *clauses,
>                     /* Last component is a scalar.  */
>                     gfc_conv_expr (&se, n->expr);
>                     gfc_add_block_to_block (block, &se.pre);
> -                   OMP_CLAUSE_DECL (node) = se.expr;
> +                   /* For BT_CHARACTER a pointer is returned.  */
> +                   OMP_CLAUSE_DECL (node)
> +                     = POINTER_TYPE_P (TREE_TYPE (se.expr))
> +                       ? build_fold_indirect_ref (se.expr) : se.expr;
>                     gfc_add_block_to_block (block, &se.post);
> +                   if (sym_attr.pointer || sym_attr.allocatable)
> +                     {
> +                       node2 = build_omp_clause (input_location,
> +                                                 OMP_CLAUSE_MAP);
> +                       OMP_CLAUSE_SET_MAP_KIND (node2,
> +                                                openacc
> +                                                ? GOMP_MAP_ATTACH_DETACH
> +                                                : GOMP_MAP_ALWAYS_POINTER);
> +                       OMP_CLAUSE_DECL (node2)
> +                         = POINTER_TYPE_P (TREE_TYPE (se.expr))
> +                           ? se.expr :  gfc_build_addr_expr (NULL, se.expr);
> +                       OMP_CLAUSE_SIZE (node2) = size_int (0);
> +                       if (!openacc
> +                           && n->expr->ts.type == BT_CHARACTER
> +                           && n->expr->ts.deferred)
> +                         {
> +                           gcc_assert (se.string_length);
> +                           tree tmp = gfc_get_char_type (n->expr->ts.kind);
> +                           OMP_CLAUSE_SIZE (node)
> +                             = fold_build2 (MULT_EXPR, size_type_node,
> +                                            fold_convert (size_type_node,
> +                                                          se.string_length),
> +                                            TYPE_SIZE_UNIT (tmp));
> +                           node3 = build_omp_clause (input_location,
> +                                                     OMP_CLAUSE_MAP);
> +                           OMP_CLAUSE_SET_MAP_KIND (node3, GOMP_MAP_TO);
> +                           OMP_CLAUSE_DECL (node3) = se.string_length;
> +                           OMP_CLAUSE_SIZE (node3)
> +                             = TYPE_SIZE_UNIT (gfc_charlen_type_node);
> +                         }
> +                     }
>                     goto finalize_map_clause;
>                   }
>
> @@ -2747,7 +2889,7 @@ gfc_trans_omp_clauses (stmtblock_t *block, 
> gfc_omp_clauses *clauses,
>                 if (lastcomp->u.c.component->ts.type == BT_DERIVED
>                     || lastcomp->u.c.component->ts.type == BT_CLASS)
>                   {
> -                   if (sym_attr.allocatable || sym_attr.pointer)
> +                   if (sym_attr.pointer || (openacc && sym_attr.allocatable))
>                       {
>                         tree data, size;
>
> @@ -2768,7 +2910,9 @@ gfc_trans_omp_clauses (stmtblock_t *block, 
> gfc_omp_clauses *clauses,
>                         node2 = build_omp_clause (input_location,
>                                                   OMP_CLAUSE_MAP);
>                         OMP_CLAUSE_SET_MAP_KIND (node2,
> -                                                GOMP_MAP_ATTACH_DETACH);
> +                                                openacc
> +                                                ? GOMP_MAP_ATTACH_DETACH
> +                                                : GOMP_MAP_ALWAYS_POINTER);
>                         OMP_CLAUSE_DECL (node2) = data;
>                         OMP_CLAUSE_SIZE (node2) = size_int (0);
>                       }
> @@ -2795,32 +2939,82 @@ gfc_trans_omp_clauses (stmtblock_t *block, 
> gfc_omp_clauses *clauses,
>
>                     if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (inner)))
>                       {
> +                       gomp_map_kind map_kind;
> +                       tree desc_node;
>                         tree type = TREE_TYPE (inner);
>                         tree ptr = gfc_conv_descriptor_data_get (inner);
>                         ptr = build_fold_indirect_ref (ptr);
>                         OMP_CLAUSE_DECL (node) = ptr;
> -                       node2 = build_omp_clause (input_location,
> -                                                 OMP_CLAUSE_MAP);
> -                       OMP_CLAUSE_SET_MAP_KIND (node2, GOMP_MAP_TO_PSET);
> -                       OMP_CLAUSE_DECL (node2) = inner;
> -                       OMP_CLAUSE_SIZE (node2) = TYPE_SIZE_UNIT (type);
> -                       node3 = build_omp_clause (input_location,
> -                                                 OMP_CLAUSE_MAP);
> -                       OMP_CLAUSE_SET_MAP_KIND (node3,
> -                                                GOMP_MAP_ATTACH_DETACH);
> -                       OMP_CLAUSE_DECL (node3)
> -                         = gfc_conv_descriptor_data_get (inner);
> -                       STRIP_NOPS (OMP_CLAUSE_DECL (node3));
> -                       OMP_CLAUSE_SIZE (node3) = size_int (0);
>                         int rank = GFC_TYPE_ARRAY_RANK (type);
>                         OMP_CLAUSE_SIZE (node)
>                           = gfc_full_array_size (block, inner, rank);
>                         tree elemsz
>                           = TYPE_SIZE_UNIT (gfc_get_element_type (type));
> +                       if (GOMP_MAP_COPY_TO_P (OMP_CLAUSE_MAP_KIND (node)))
> +                         map_kind = GOMP_MAP_TO;
> +                       else if (n->u.map_op == OMP_MAP_RELEASE
> +                                || n->u.map_op == OMP_MAP_DELETE)
> +                         map_kind = OMP_CLAUSE_MAP_KIND (node);
> +                       else
> +                         map_kind = GOMP_MAP_ALLOC;
> +                       if (!openacc
> +                           && n->expr->ts.type == BT_CHARACTER
> +                           && n->expr->ts.deferred)
> +                         {
> +                           gcc_assert (se.string_length);
> +                           tree len = fold_convert (size_type_node,
> +                                                    se.string_length);
> +                           elemsz = gfc_get_char_type (n->expr->ts.kind);
> +                           elemsz = TYPE_SIZE_UNIT (elemsz);
> +                           elemsz = fold_build2 (MULT_EXPR, size_type_node,
> +                                                 len, elemsz);
> +                           node4 = build_omp_clause (input_location,
> +                                                     OMP_CLAUSE_MAP);
> +                           OMP_CLAUSE_SET_MAP_KIND (node4, map_kind);
> +                           OMP_CLAUSE_DECL (node4) = se.string_length;
> +                           OMP_CLAUSE_SIZE (node4)
> +                             = TYPE_SIZE_UNIT (gfc_charlen_type_node);
> +                         }
>                         elemsz = fold_convert (gfc_array_index_type, elemsz);
>                         OMP_CLAUSE_SIZE (node)
>                           = fold_build2 (MULT_EXPR, gfc_array_index_type,
>                                          OMP_CLAUSE_SIZE (node), elemsz);
> +                       desc_node = build_omp_clause (input_location,
> +                                                     OMP_CLAUSE_MAP);
> +                       if (openacc)
> +                         OMP_CLAUSE_SET_MAP_KIND (desc_node,
> +                                                  GOMP_MAP_TO_PSET);
> +                       else
> +                         OMP_CLAUSE_SET_MAP_KIND (desc_node, map_kind);
> +                       OMP_CLAUSE_DECL (desc_node) = inner;
> +                       OMP_CLAUSE_SIZE (desc_node) = TYPE_SIZE_UNIT (type);
> +                       if (openacc)
> +                         node2 = desc_node;
> +                       else
> +                         {
> +                           node2 = node;
> +                           node = desc_node;  /* Put first.  */
> +                         }
> +                       node3 = build_omp_clause (input_location,
> +                                                 OMP_CLAUSE_MAP);
> +                       OMP_CLAUSE_SET_MAP_KIND (node3,
> +                                                openacc
> +                                                ? GOMP_MAP_ATTACH_DETACH
> +                                                : GOMP_MAP_ALWAYS_POINTER);
> +                       OMP_CLAUSE_DECL (node3)
> +                         = gfc_conv_descriptor_data_get (inner);
> +                       /* Similar to gfc_trans_omp_array_section (details
> +                          there), we add/keep the cast for OpenMP to prevent
> +                          that an 'alloc:' gets added for node3 ('desc.data')
> +                          as that is part of the whole descriptor (node3).
> +                          TODO: Remove once the ME handles this properly.  */
> +                       if (!openacc)
> +                         OMP_CLAUSE_DECL (node3)
> +                             = fold_convert (TREE_TYPE (TREE_OPERAND(ptr, 
> 0)),
> +                                             OMP_CLAUSE_DECL (node3));
> +                       else
> +                         STRIP_NOPS (OMP_CLAUSE_DECL (node3));
> +                       OMP_CLAUSE_SIZE (node3) = size_int (0);
>                       }
>                     else
>                       OMP_CLAUSE_DECL (node) = inner;
> @@ -2832,9 +3026,11 @@ gfc_trans_omp_clauses (stmtblock_t *block, 
> gfc_omp_clauses *clauses,
>                          && lastcomp->next->type == REF_ARRAY
>                          && lastcomp->next->u.ar.type == AR_ELEMENT);
>
> +                   gomp_map_kind kind = (openacc ? GOMP_MAP_ATTACH_DETACH
> +                                                 : GOMP_MAP_ALWAYS_POINTER);
>                     gfc_trans_omp_array_section (block, n, inner, element,
> -                                                GOMP_MAP_ATTACH_DETACH,
> -                                                node, node2, node3, node4);
> +                                                kind, node, node2, node3,
> +                                                node4);
>                   }
>               }
>             else  /* An array element or array section.  */
> @@ -2846,65 +3042,7 @@ gfc_trans_omp_clauses (stmtblock_t *block, 
> gfc_omp_clauses *clauses,
>               }
>
>             finalize_map_clause:
> -           switch (n->u.map_op)
> -             {
> -             case OMP_MAP_ALLOC:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ALLOC);
> -               break;
> -             case OMP_MAP_IF_PRESENT:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_IF_PRESENT);
> -               break;
> -             case OMP_MAP_ATTACH:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ATTACH);
> -               break;
> -             case OMP_MAP_TO:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_TO);
> -               break;
> -             case OMP_MAP_FROM:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FROM);
> -               break;
> -             case OMP_MAP_TOFROM:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_TOFROM);
> -               break;
> -             case OMP_MAP_ALWAYS_TO:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ALWAYS_TO);
> -               break;
> -             case OMP_MAP_ALWAYS_FROM:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ALWAYS_FROM);
> -               break;
> -             case OMP_MAP_ALWAYS_TOFROM:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_ALWAYS_TOFROM);
> -               break;
> -             case OMP_MAP_RELEASE:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_RELEASE);
> -               break;
> -             case OMP_MAP_DELETE:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_DELETE);
> -               break;
> -             case OMP_MAP_DETACH:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_DETACH);
> -               break;
> -             case OMP_MAP_FORCE_ALLOC:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_ALLOC);
> -               break;
> -             case OMP_MAP_FORCE_TO:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_TO);
> -               break;
> -             case OMP_MAP_FORCE_FROM:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_FROM);
> -               break;
> -             case OMP_MAP_FORCE_TOFROM:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_TOFROM);
> -               break;
> -             case OMP_MAP_FORCE_PRESENT:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_PRESENT);
> -               break;
> -             case OMP_MAP_FORCE_DEVICEPTR:
> -               OMP_CLAUSE_SET_MAP_KIND (node, GOMP_MAP_FORCE_DEVICEPTR);
> -               break;
> -             default:
> -               gcc_unreachable ();
> -             }
> +
>             omp_clauses = gfc_trans_add_clause (node, omp_clauses);
>             if (node2)
>               omp_clauses = gfc_trans_add_clause (node2, omp_clauses);
> @@ -3656,7 +3794,7 @@ gfc_trans_oacc_construct (gfc_code *code)
>
>    gfc_start_block (&block);
>    oacc_clauses = gfc_trans_omp_clauses (&block, code->ext.omp_clauses,
> -                                     code->loc);
> +                                     code->loc, false, true);
>    stmt = gfc_trans_omp_code (code->block->next, true);
>    stmt = build2_loc (input_location, construct_code, void_type_node, stmt,
>                    oacc_clauses);
> @@ -3692,7 +3830,7 @@ gfc_trans_oacc_executable_directive (gfc_code *code)
>
>    gfc_start_block (&block);
>    oacc_clauses = gfc_trans_omp_clauses (&block, code->ext.omp_clauses,
> -                                     code->loc);
> +                                     code->loc, false, true);
>    stmt = build1_loc (input_location, construct_code, void_type_node,
>                    oacc_clauses);
>    gfc_add_expr_to_block (&block, stmt);
> @@ -4517,7 +4655,7 @@ gfc_trans_oacc_combined_directive (gfc_code *code)
>        if (construct_code == OACC_KERNELS)
>       construct_clauses.lists[OMP_LIST_REDUCTION] = NULL;
>        oacc_clauses = gfc_trans_omp_clauses (&block, &construct_clauses,
> -                                         code->loc);
> +                                         code->loc, false, true);
>      }
>    if (!loop_clauses.seq)
>      pblock = &block;
> @@ -5695,7 +5833,7 @@ gfc_trans_oacc_declare (gfc_code *code)
>    gfc_start_block (&block);
>
>    oacc_clauses = gfc_trans_omp_clauses (&block, 
> code->ext.oacc_declare->clauses,
> -                                     code->loc);
> +                                     code->loc, false, true);
>    stmt = gfc_trans_omp_code (code->block->next, true);
>    stmt = build2_loc (input_location, construct_code, void_type_node, stmt,
>                    oacc_clauses);
> diff --git a/gcc/testsuite/gfortran.dg/goacc/finalize-1.f 
> b/gcc/testsuite/gfortran.dg/goacc/finalize-1.f
> index 1e2e3e94b8a..fd496968506 100644
> --- a/gcc/testsuite/gfortran.dg/goacc/finalize-1.f
> +++ b/gcc/testsuite/gfortran.dg/goacc/finalize-1.f
> @@ -20,7 +20,7 @@
>  ! { dg-final { scan-tree-dump-times "(?n)#pragma omp target 
> oacc_enter_exit_data map\\(delete:del_f \\\[len: \[0-9\]+\\\]\\) finalize$" 1 
> "gimple" } }
>
>  !$ACC EXIT DATA FINALIZE DELETE (del_f_p(2:5))
> -! { dg-final { scan-tree-dump-times "(?n)#pragma acc exit data 
> map\\(release:\\*\\(c_char \\*\\) parm\\.0\\.data \\\[len: \[^\\\]\]+\\\]\\) 
> map\\(to:del_f_p \\\[pointer set, len: \[0-9\]+\\\]\\) 
> map\\(alloc:\\(integer\\(kind=1\\)\\\[0:\\\] \\* restrict\\) del_f_p\\.data 
> \\\[pointer assign, bias: \\(sizetype\\) parm\\.0\\.data - \\(sizetype\\) 
> del_f_p\\.data\\\]\\) finalize;$" 1 "original" } }
> +! { dg-final { scan-tree-dump-times "(?n)#pragma acc exit data 
> map\\(release:\\*\\(c_char \\*\\) parm\\.0\\.data \\\[len: \[^\\\]\]+\\\]\\) 
> map\\(to:del_f_p \\\[pointer set, len: \[0-9\]+\\\]\\) 
> map\\(alloc:\\(integer\\(kind=1\\)\\\[0:\\\] \\* restrict\\) del_f_p\\.data 
> \\\[pointer assign, bias: \\(integer\\(kind=8\\)\\) parm\\.0\\.data - 
> \\(integer\\(kind=8\\)\\) del_f_p\\.data\\\]\\) finalize;$" 1 "original" } }
>  ! { dg-final { scan-tree-dump-times "(?n)#pragma omp target 
> oacc_enter_exit_data map\\(delete:MEM\\\[\\(c_char \\*\\)\[^\\\]\]+\\\] 
> \\\[len: \[^\\\]\]+\\\]\\) finalize$" 1 "gimple" } }
>
>  !$ACC EXIT DATA COPYOUT (cpo_r)
> @@ -32,6 +32,6 @@
>  ! { dg-final { scan-tree-dump-times "(?n)#pragma omp target 
> oacc_enter_exit_data map\\(force_from:cpo_f \\\[len: \[0-9\]+\\\]\\) 
> finalize$" 1 "gimple" } }
>
>  !$ACC EXIT DATA COPYOUT (cpo_f_p(4:10)) FINALIZE
> -! { dg-final { scan-tree-dump-times "(?n)#pragma acc exit data 
> map\\(from:\\*\\(c_char \\*\\) parm\\.1\\.data \\\[len: \[^\\\]\]+\\\]\\) 
> map\\(to:cpo_f_p \\\[pointer set, len: \[0-9\]+\\\]\\) 
> map\\(alloc:\\(integer\\(kind=1\\)\\\[0:\\\] \\* restrict\\) cpo_f_p\\.data 
> \\\[pointer assign, bias: \\(sizetype\\) parm\\.1\\.data - \\(sizetype\\) 
> cpo_f_p\\.data\\\]\\) finalize;$" 1 "original" } }
> +! { dg-final { scan-tree-dump-times "(?n)#pragma acc exit data 
> map\\(from:\\*\\(c_char \\*\\) parm\\.1\\.data \\\[len: \[^\\\]\]+\\\]\\) 
> map\\(to:cpo_f_p \\\[pointer set, len: \[0-9\]+\\\]\\) 
> map\\(alloc:\\(integer\\(kind=1\\)\\\[0:\\\] \\* restrict\\) cpo_f_p\\.data 
> \\\[pointer assign, bias: \\(integer\\(kind=8\\)\\) parm\\.1\\.data - 
> \\(integer\\(kind=8\\)\\) cpo_f_p\\.data\\\]\\) finalize;$" 1 "original" } }
>  ! { dg-final { scan-tree-dump-times "(?n)#pragma omp target 
> oacc_enter_exit_data map\\(force_from:MEM\\\[\\(c_char \\*\\)\[^\\\]\]+\\\] 
> \\\[len: \[^\\\]\]+\\\]\\) finalize$" 1 "gimple" } }
>        END SUBROUTINE f
> diff --git a/gcc/testsuite/gfortran.dg/gomp/map-1.f90 
> b/gcc/testsuite/gfortran.dg/gomp/map-1.f90
> index e78b56c8f39..831feffcc43 100644
> --- a/gcc/testsuite/gfortran.dg/gomp/map-1.f90
> +++ b/gcc/testsuite/gfortran.dg/gomp/map-1.f90
> @@ -57,18 +57,20 @@ subroutine test(aas)
>    !$omp target map(j(:))
>    !$omp end target
>
> -  !$omp target map(j(1:9:2)) ! { dg-error "Stride should not be specified 
> for array section in MAP clause" }
> +  !$omp target map(j(1:9:2))
> + ! { dg-error "Array is not contiguous" "" { target *-*-* } 60 }
> + ! { dg-error "Stride should not be specified for array section in MAP 
> clause" "" { target *-*-* } 60 }
>    !$omp end target
>
>    !$omp target map(aas(5:))
>    !$omp end target
> -  ! { dg-error "Rightmost upper bound of assumed size array section not 
> specified" "" { target *-*-* } 63 }
> -  ! { dg-error "'aas' in MAP clause at \\\(1\\\) is not a proper array 
> section" "" { target *-*-* } 63 }
> +  ! { dg-error "Rightmost upper bound of assumed size array section not 
> specified" "" { target *-*-* } 65 }
> +  ! { dg-error "'aas' in MAP clause at \\\(1\\\) is not a proper array 
> section" "" { target *-*-* } 65 }
>
>    !$omp target map(aas(:))
>    !$omp end target
> -  ! { dg-error "Rightmost upper bound of assumed size array section not 
> specified" "" { target *-*-* } 68 }
> -  ! { dg-error "'aas' in MAP clause at \\\(1\\\) is not a proper array 
> section" "" { target *-*-* } 68 }
> +  ! { dg-error "Rightmost upper bound of assumed size array section not 
> specified" "" { target *-*-* } 70 }
> +  ! { dg-error "'aas' in MAP clause at \\\(1\\\) is not a proper array 
> section" "" { target *-*-* } 70 }
>
>    !$omp target map(aas) ! { dg-error "Assumed size array" }
>    !$omp end target
> @@ -81,29 +83,28 @@ subroutine test(aas)
>
>    !$omp target map(k(5:))
>    !$omp end target
> -  ! { dg-error "Rank mismatch in array reference" "" { target *-*-* } 82 }
> -  ! { dg-error "'k' in MAP clause at \\\(1\\\) is not a proper array 
> section" "" { target *-*-* } 82 }
> +  ! { dg-error "Rank mismatch in array reference" "" { target *-*-* } 84 }
> +  ! { dg-error "'k' in MAP clause at \\\(1\\\) is not a proper array 
> section" "" { target *-*-* } 84 }
>
>    !$omp target map(k(5:,:,3))
>    !$omp end target
> -  ! { dg-error "Rank mismatch in array reference" "" { target *-*-* } 87 }
> -  ! { dg-error "'k' in MAP clause at \\\(1\\\) is not a proper array 
> section" "" { target *-*-* } 87 }
> +  ! { dg-error "Rank mismatch in array reference" "" { target *-*-* } 89 }
> +  ! { dg-error "'k' in MAP clause at \\\(1\\\) is not a proper array 
> section" "" { target *-*-* } 89 }
>
>    !$omp target map(tt)
>    !$omp end target
>
> -  !$omp target map(tt%i) ! { dg-error "Syntax error in OpenMP variable list" 
> }
> +  !$omp target map(tt%k) ! { dg-error "not a member of" }
>    !$omp end target ! { dg-error "Unexpected !\\\$OMP END TARGET statement" }
>
> -  !$omp target map(tt%j) ! { dg-error "Syntax error in OpenMP variable list" 
> }
> -  !$omp end target ! { dg-error "Unexpected !\\\$OMP END TARGET statement" }
> +  !$omp target map(tt%j)
> +  !$omp end target
>
> -  ! broken test
> -  !$omp target map(tt%j(1)) ! { dg-error "Syntax error in OpenMP variable 
> list" }
> -  !$omp end target ! { dg-error "Unexpected !\\\$OMP END TARGET statement" }
> +  !$omp target map(tt%j(1))
> +  !$omp end target
>
> -  !$omp target map(tt%j(1:)) ! { dg-error "Syntax error in OpenMP variable 
> list" }
> -  !$omp end target ! { dg-error "Unexpected !\\\$OMP END TARGET statement" }
> +  !$omp target map(tt%j(1:))
> +  !$omp end target
>
>    !$omp target map(tp) ! { dg-error "THREADPRIVATE object 'tp' in MAP 
> clause" }
>    !$omp end target
> diff --git a/gcc/testsuite/gfortran.dg/gomp/map-2.f90 
> b/gcc/testsuite/gfortran.dg/gomp/map-2.f90
> new file mode 100644
> index 00000000000..73c4f5a87d0
> --- /dev/null
> +++ b/gcc/testsuite/gfortran.dg/gomp/map-2.f90
> @@ -0,0 +1,6 @@
> +type t
> +  integer :: i
> +end type t
> +type(t) v
> +!$omp target enter data map(to:v%i, v%i)  ! { dg-error "appears more than 
> once in map clauses" }
> +end
> diff --git a/libgomp/testsuite/libgomp.fortran/struct-elem-map-1.f90 
> b/libgomp/testsuite/libgomp.fortran/struct-elem-map-1.f90
> new file mode 100644
> index 00000000000..f18eeb90165
> --- /dev/null
> +++ b/libgomp/testsuite/libgomp.fortran/struct-elem-map-1.f90
> @@ -0,0 +1,331 @@
> +! { dg-do run }
> +!
> +! Test OpenMP 4.5 structure-element mapping
> +
> +! TODO: character(kind=4,...) needs to be tested, but depends on
> +!       PR fortran/95837
> +! TODO: ...%str4 should be tested but that currently fails due to
> +!       PR fortran/95868 (see commented lined)
> +! TODO: Test also array-valued var, nested derived types,
> +!       type-extended types.
> +
> +program main
> +  implicit none
> +
> +  type t2
> +    integer :: a, b
> +    ! For complex, assume small integers are exactly representable
> +    complex(kind=8) :: c
> +    integer :: d(10)
> +    integer, pointer :: e => null(), f(:) => null()
> +    character(len=5) :: str1
> +    character(len=5) :: str2(4)
> +    character(len=:), pointer :: str3 => null()
> +    character(len=:), pointer :: str4(:) => null()
> +  end type t2
> +
> +  integer :: i
> +
> +  call one ()
> +  call two ()
> +  call three ()
> +  call four ()
> +  call five ()
> +  call six ()
> +  call seven ()
> +  call eight ()
> +
> +contains
> +  ! Implicitly mapped – but no pointers are mapped
> +  subroutine one()
> +    type(t2) :: var, var2(4)
> +    type(t2), pointer :: var3, var4(:)
> +
> +    print '(g0)', '==== TESTCASE "one" ===='
> +
> +    var = t2(a = 1, &
> +             b = 2, c = cmplx(-1.0_8, 2.0_8,kind=8), &
> +             d = [(-3*i, i = 1, 10)], &
> +             str1 = "abcde", &
> +             str2 = ["12345", "67890", "ABCDE", "FGHIJ"])
> +    allocate (var%e, source=99)
> +    allocate (var%f, source=[22, 33, 44, 55])
> +    allocate (var%str3, source="HelloWorld")
> +    allocate (var%str4, source=["Let's", "Go!!!"])
> +
> +    !$omp target map(tofrom:var)
> +      if (var%a /= 1) stop 1
> +      if (var%b /= 2)  stop 2
> +      if (var%c%re /= -1.0_8 .or. var%c%im /= 2.0_8) stop 3
> +      if (any (var%d /= [(-3*i, i = 1, 10)])) stop 4
> +      if (var%str1 /= "abcde") stop 5
> +      if (any (var%str2 /= ["12345", "67890", "ABCDE", "FGHIJ"])) stop 6
> +    !$omp end target
> +
> +    deallocate(var%e, var%f, var%str3, var%str4)
> +  end subroutine one
> +
> +  ! Explicitly mapped – all and full arrays
> +  subroutine two()
> +    type(t2) :: var, var2(4)
> +    type(t2), pointer :: var3, var4(:)
> +
> +    print '(g0)', '==== TESTCASE "two" ===='
> +
> +    var = t2(a = 1, &
> +             b = 2, c = cmplx(-1.0_8, 2.0_8,kind=8), &
> +             d = [(-3*i, i = 1, 10)], &
> +             str1 = "abcde", &
> +             str2 = ["12345", "67890", "ABCDE", "FGHIJ"])
> +    allocate (var%e, source=99)
> +    allocate (var%f, source=[22, 33, 44, 55])
> +    allocate (var%str3, source="HelloWorld")
> +    allocate (var%str4, source=["Let's", "Go!!!"])
> +
> +    !$omp target map(tofrom: var%a, var%b, var%c, var%d, var%e, var%f, &
> +    !$omp&                   var%str1, var%str2, var%str3, var%str4)
> +      if (var%a /= 1) stop 1
> +      if (var%b /= 2)  stop 2
> +      if (var%c%re /= -1.0_8 .or. var%c%im /= 2.0_8) stop 3
> +      if (any (var%d /= [(-3*i, i = 1, 10)])) stop 4
> +      if (var%str1 /= "abcde") stop 5
> +      if (any (var%str2 /= ["12345", "67890", "ABCDE", "FGHIJ"])) stop 6
> +
> +      if (.not. associated (var%e)) stop 7
> +      if (var%e /= 99) stop 8
> +      if (.not. associated (var%f)) stop 9
> +      if (size (var%f) /= 4) stop 10
> +      if (any (var%f /= [22, 33, 44, 55])) stop 11
> +      if (.not. associated (var%str3)) stop 12
> +      if (len (var%str3) /= len ("HelloWorld")) stop 13
> +      if (var%str3 /= "HelloWorld") stop 14
> +      if (.not. associated (var%str4)) stop 15
> +      if (len (var%str4) /= 5) stop 16
> +      if (size (var%str4) /= 2) stop 17
> +      if (any (var%str4 /= ["Let's", "Go!!!"])) stop 18
> +    !$omp end target
> +
> +    deallocate(var%e, var%f, var%str3, var%str4)
> +  end subroutine two
> +
> +  ! Explicitly mapped – one by one but full arrays
> +  subroutine three()
> +    type(t2) :: var, var2(4)
> +    type(t2), pointer :: var3, var4(:)
> +
> +    print '(g0)', '==== TESTCASE "three" ===='
> +
> +    var = t2(a = 1, &
> +             b = 2, c = cmplx(-1.0_8, 2.0_8,kind=8), &
> +             d = [(-3*i, i = 1, 10)], &
> +             str1 = "abcde", &
> +             str2 = ["12345", "67890", "ABCDE", "FGHIJ"])
> +    allocate (var%e, source=99)
> +    allocate (var%f, source=[22, 33, 44, 55])
> +    allocate (var%str3, source="HelloWorld")
> +    allocate (var%str4, source=["Let's", "Go!!!"])
> +
> +    !$omp target map(tofrom: var%a)
> +      if (var%a /= 1) stop 1
> +    !$omp end target
> +    !$omp target map(tofrom: var%b)
> +      if (var%b /= 2)  stop 2
> +    !$omp end target
> +    !$omp target map(tofrom: var%c)
> +      if (var%c%re /= -1.0_8 .or. var%c%im /= 2.0_8) stop 3
> +    !$omp end target
> +    !$omp target map(tofrom: var%d)
> +      if (any (var%d /= [(-3*i, i = 1, 10)])) stop 4
> +    !$omp end target
> +    !$omp target map(tofrom: var%str1)
> +      if (var%str1 /= "abcde") stop 5
> +    !$omp end target
> +    !$omp target map(tofrom: var%str2)
> +      if (any (var%str2 /= ["12345", "67890", "ABCDE", "FGHIJ"])) stop 6
> +    !$omp end target
> +
> +    !$omp target map(tofrom: var%e)
> +      if (.not. associated (var%e)) stop 7
> +      if (var%e /= 99) stop 8
> +    !$omp end target
> +    !$omp target map(tofrom: var%f)
> +      if (.not. associated (var%f)) stop 9
> +      if (size (var%f) /= 4) stop 10
> +      if (any (var%f /= [22, 33, 44, 55])) stop 11
> +    !$omp end target
> +    !$omp target map(tofrom: var%str3)
> +      if (.not. associated (var%str3)) stop 12
> +      if (len (var%str3) /= len ("HelloWorld")) stop 13
> +      if (var%str3 /= "HelloWorld") stop 14
> +    !$omp end target
> +    !$omp target map(tofrom: var%str4)
> +      if (.not. associated (var%str4)) stop 15
> +      if (len (var%str4) /= 5) stop 16
> +      if (size (var%str4) /= 2) stop 17
> +      if (any (var%str4 /= ["Let's", "Go!!!"])) stop 18
> +    !$omp end target
> +
> +    deallocate(var%e, var%f, var%str3, var%str4)
> +  end subroutine three
> +
> +  ! Explicitly mapped – all but only subarrays
> +  subroutine four()
> +    type(t2) :: var, var2(4)
> +    type(t2), pointer :: var3, var4(:)
> +
> +    print '(g0)', '==== TESTCASE "four" ===='
> +
> +    var = t2(a = 1, &
> +             b = 2, c = cmplx(-1.0_8, 2.0_8,kind=8), &
> +             d = [(-3*i, i = 1, 10)], &
> +             str1 = "abcde", &
> +             str2 = ["12345", "67890", "ABCDE", "FGHIJ"])
> +    allocate (var%f, source=[22, 33, 44, 55])
> +    allocate (var%str4, source=["Let's", "Go!!!"])
> +
> +!   !$omp target map(tofrom: var%d(4:7), var%f(2:3), var%str2(2:3), 
> var%str4(2:2))
> +    !$omp target map(tofrom: var%d(4:7), var%f(2:3), var%str2(2:3))
> +      if (any (var%d(4:7) /= [(-3*i, i = 4, 7)])) stop 4
> +      if (any (var%str2(2:3) /= ["67890", "ABCDE"])) stop 6
> +
> +      if (.not. associated (var%f)) stop 9
> +      if (size (var%f) /= 4) stop 10
> +      if (any (var%f(2:3) /= [33, 44])) stop 11
> +!     if (.not. associated (var%str4)) stop 15
> +!     if (len (var%str4) /= 5) stop 16
> +!     if (size (var%str4) /= 2) stop 17
> +!     if (var%str4(2) /= "Go!!!") stop 18
> +    !$omp end target
> +
> +    deallocate(var%f, var%str4)
> +  end subroutine four
> +
> +  ! Explicitly mapped – all but only subarrays and one by one
> +  subroutine five()
> +    type(t2) :: var, var2(4)
> +    type(t2), pointer :: var3, var4(:)
> +
> +    print '(g0)', '==== TESTCASE "five" ===='
> +
> +    var = t2(a = 1, &
> +             b = 2, c = cmplx(-1.0_8, 2.0_8,kind=8), &
> +             d = [(-3*i, i = 1, 10)], &
> +             str1 = "abcde", &
> +             str2 = ["12345", "67890", "ABCDE", "FGHIJ"])
> +    allocate (var%f, source=[22, 33, 44, 55])
> +    allocate (var%str4, source=["Let's", "Go!!!"])
> +
> +    !$omp target map(tofrom: var%d(4:7))
> +      if (any (var%d(4:7) /= [(-3*i, i = 4, 7)])) stop 4
> +    !$omp end target
> +    !$omp target map(tofrom: var%str2(2:3))
> +      if (any (var%str2(2:3) /= ["67890", "ABCDE"])) stop 6
> +    !$omp end target
> +
> +    !$omp target map(tofrom: var%f(2:3))
> +     if (.not. associated (var%f)) stop 9
> +     if (size (var%f) /= 4) stop 10
> +     if (any (var%f(2:3) /= [33, 44])) stop 11
> +    !$omp end target
> +!  !$omp target map(tofrom: var%str4(2:2))
> +!     if (.not. associated (var%str4)) stop 15
> +!     if (len (var%str4) /= 5) stop 16
> +!     if (size (var%str4) /= 2) stop 17
> +!     if (var%str4(2) /= "Go!!!") stop 18
> +!  !$omp end target
> +
> +    deallocate(var%f, var%str4)
> +  end subroutine five
> +
> +  ! Explicitly mapped – all but only array elements
> +  subroutine six()
> +    type(t2) :: var, var2(4)
> +    type(t2), pointer :: var3, var4(:)
> +
> +    print '(g0)', '==== TESTCASE "six" ===='
> +
> +    var = t2(a = 1, &
> +             b = 2, c = cmplx(-1.0_8, 2.0_8,kind=8), &
> +             d = [(-3*i, i = 1, 10)], &
> +             str1 = "abcde", &
> +             str2 = ["12345", "67890", "ABCDE", "FGHIJ"])
> +    allocate (var%f, source=[22, 33, 44, 55])
> +    allocate (var%str4, source=["Let's", "Go!!!"])
> +
> +!   !$omp target map(tofrom: var%d(5), var%f(3), var%str2(3), var%str4(2))
> +    !$omp target map(tofrom: var%d(5), var%f(3), var%str2(3))
> +      if (var%d(5) /= -3*5) stop 4
> +      if (var%str2(3) /= "ABCDE") stop 6
> +
> +     if (.not. associated (var%f)) stop 9
> +     if (size (var%f) /= 4) stop 10
> +     if (var%f(3) /= 44) stop 11
> +!     if (.not. associated (var%str4)) stop 15
> +!     if (len (var%str4) /= 5) stop 16
> +!     if (size (var%str4) /= 2) stop 17
> +!     if (var%str4(2) /= "Go!!!") stop 18
> +    !$omp end target
> +
> +    deallocate(var%f, var%str4)
> +  end subroutine six
> +
> +  ! Explicitly mapped – all but only array elements and one by one
> +  subroutine seven()
> +    type(t2) :: var, var2(4)
> +    type(t2), pointer :: var3, var4(:)
> +
> +    print '(g0)', '==== TESTCASE "seven" ===='
> +
> +    var = t2(a = 1, &
> +             b = 2, c = cmplx(-1.0_8, 2.0_8,kind=8), &
> +             d = [(-3*i, i = 1, 10)], &
> +             str1 = "abcde", &
> +             str2 = ["12345", "67890", "ABCDE", "FGHIJ"])
> +    allocate (var%f, source=[22, 33, 44, 55])
> +    allocate (var%str4, source=["Let's", "Go!!!"])
> +
> +    !$omp target map(tofrom: var%d(5))
> +      if (var%d(5) /= (-3*5)) stop 4
> +    !$omp end target
> +    !$omp target map(tofrom: var%str2(2:3))
> +      if (any (var%str2(2:3) /= ["67890", "ABCDE"])) stop 6
> +    !$omp end target
> +
> +    !$omp target map(tofrom: var%f(2:3))
> +     if (.not. associated (var%f)) stop 9
> +     if (size (var%f) /= 4) stop 10
> +     if (any (var%f(2:3) /= [33, 44])) stop 11
> +    !$omp end target
> +!   !$omp target map(tofrom: var%str4(2:2))
> +!     if (.not. associated (var%str4)) stop 15
> +!     if (len (var%str4) /= 5) stop 16
> +!     if (size (var%str4) /= 2) stop 17
> +!     if (var%str4(2) /= "Go!!!") stop 18
> +!   !$omp end target
> +
> +    deallocate(var%f, var%str4)
> +  end subroutine seven
> +
> +  ! Check mapping of NULL pointers
> +  subroutine eight()
> +    type(t2) :: var, var2(4)
> +    type(t2), pointer :: var3, var4(:)
> +
> +    print '(g0)', '==== TESTCASE "eight" ===='
> +
> +    var = t2(a = 1, &
> +             b = 2, c = cmplx(-1.0_8, 2.0_8,kind=8), &
> +             d = [(-3*i, i = 1, 10)], &
> +             str1 = "abcde", &
> +             str2 = ["12345", "67890", "ABCDE", "FGHIJ"])
> +
> +!    !$omp target map(tofrom: var%e, var%f, var%str3, var%str4)
> +    !$omp target map(tofrom: var%e, var%str3)
> +      if (associated (var%e)) stop 1
> +!      if (associated (var%f)) stop 2
> +      if (associated (var%str3)) stop 3
> +!      if (associated (var%str4)) stop 4
> +    !$omp end target
> +  end subroutine eight
> +
> +end program main
-----------------
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