[Bug fortran/31204] wrong host association of implied loop variable

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

------- Comment #2 from pault at gcc dot gnu dot org  2007-04-06 12:49 -------
This fixes it and half regtests(I got bored with the time that it was taking
with Chug_chugwin.).  I will regest tonight on something more spritely!

Paul

Index: gcc/fortran/decl.c
===================================================================
*** gcc/fortran/decl.c  (révision 123517)
--- gcc/fortran/decl.c  (copie de travail)
*************** build_sym (const char *name, gfc_charlen
*** 769,774 ****
--- 769,777 ----
    if (gfc_copy_attr (&sym->attr, &attr, var_locus) == FAILURE)
      return FAILURE;

+   /* Reset because symbol is not only declared implicitly as an implied
+      do loop index.  */
+   sym->attr.implied_index = 0;
    return SUCCESS;
  }

Index: gcc/fortran/gfortran.h
===================================================================
*** gcc/fortran/gfortran.h      (révision 123516)
--- gcc/fortran/gfortran.h      (copie de travail)
*************** typedef struct
*** 483,489 ****
    /* Variable attributes.  */
    unsigned allocatable:1, dimension:1, external:1, intrinsic:1,
      optional:1, pointer:1, save:1, target:1, value:1, volatile_:1,
!     dummy:1, result:1, assign:1, threadprivate:1, not_always_present:1;

    unsigned data:1,            /* Symbol is named in a DATA statement.  */
      protected:1,              /* Symbol has been marked as protected.  */
--- 483,490 ----
    /* Variable attributes.  */
    unsigned allocatable:1, dimension:1, external:1, intrinsic:1,
      optional:1, pointer:1, save:1, target:1, value:1, volatile_:1,
!     dummy:1, result:1, assign:1, threadprivate:1, not_always_present:1,
!     implied_index:1;

    unsigned data:1,            /* Symbol is named in a DATA statement.  */
      protected:1,              /* Symbol has been marked as protected.  */
Index: gcc/fortran/match.c
===================================================================
*** gcc/fortran/match.c (révision 123516)
--- gcc/fortran/match.c (copie de travail)
*************** gfc_match_iterator (gfc_iterator *iter, 
*** 536,541 ****
--- 536,543 ----
        goto cleanup;
      }

+   var->symtree->n.sym->attr.implied_index = 1;
+ 
    m = init_flag ? gfc_match_init_expr (&e1) : gfc_match_expr (&e1);
    if (m == MATCH_NO)
      goto syntax;
Index: gcc/fortran/primary.c
===================================================================
*** gcc/fortran/primary.c       (révision 123516)
--- gcc/fortran/primary.c       (copie de travail)
*************** gfc_match_rvalue (gfc_expr **result)
*** 2017,2023 ****
--- 2017,2038 ----
    e = NULL;
    where = gfc_current_locus;

+   /* If this is an implicit do loop index and implicitly typed,
+      it should not be host associated.  */
+   if (sym->attr.flavor == FL_VARIABLE
+       && sym->ns != gfc_current_ns
+       && sym->attr.implied_index
+       && sym->attr.implicit_type
+       && !sym->attr.use_assoc)
+     {
+       i = gfc_get_sym_tree (name, NULL, &symtree);
+       if (i)
+       return MATCH_ERROR;
+       sym = symtree->n.sym;
+     }
+ 
    gfc_set_sym_referenced (sym);
+   sym->attr.implied_index = 0;

    if (sym->attr.function && sym->result == sym)
      {
*************** match_variable (gfc_expr **result, int e
*** 2386,2391 ****
--- 2401,2424 ----
    where = gfc_current_locus;

    sym = st->n.sym;
+ 
+   /* If this is an implicit do loop index and implicitly typed,
+      it should not be host associated.  */
+   if (sym->ns != gfc_current_ns
+       && sym->attr.implied_index
+       && sym->attr.implicit_type
+       && !sym->attr.use_assoc)
+     {
+       int i;
+ 
+       i = gfc_get_sym_tree (sym->name, NULL, &st);
+       if (i)
+       return MATCH_ERROR;
+       sym = st->n.sym;
+     }
+ 
+   sym->attr.implied_index = 0;
+ 
    gfc_set_sym_referenced (sym);
    switch (sym->attr.flavor)
      {


-- 

pault at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pault at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2007-03-16 20:53:01         |2007-04-06 12:49:48
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31204