1 files changed, 0 insertions, 691 deletions

diff --git a/gcc/fortran/symbol.c b/gcc/fortran/symbol.c
index ceb45bf..b719de1 100644
--- a/gcc/fortran/symbol.c
+++ b/gcc/fortran/symbol.c
@@ -4699,694 +4699,3 @@ gfc_type_compatible (gfc_typespec *ts1, gfc_typespec *ts2)
   else
     return 0;
 }
-
-
-/* Build a polymorphic CLASS entity, using the symbol that comes from
-   build_sym. A CLASS entity is represented by an encapsulating type,
-   which contains the declared type as '$data' component, plus a pointer
-   component '$vptr' which determines the dynamic type.  */
-
-gfc_try
-gfc_build_class_symbol (gfc_typespec *ts, symbol_attribute *attr,
-			gfc_array_spec **as, bool delayed_vtab)
-{
-  char name[GFC_MAX_SYMBOL_LEN + 5];
-  gfc_symbol *fclass;
-  gfc_symbol *vtab;
-  gfc_component *c;
-
-  /* Determine the name of the encapsulating type.  */
-  if ((*as) && (*as)->rank && attr->allocatable)
-    sprintf (name, "class$%s_%d_a", ts->u.derived->name, (*as)->rank);
-  else if ((*as) && (*as)->rank)
-    sprintf (name, "class$%s_%d", ts->u.derived->name, (*as)->rank);
-  else if (attr->pointer)
-    sprintf (name, "class$%s_p", ts->u.derived->name);
-  else if (attr->allocatable)
-    sprintf (name, "class$%s_a", ts->u.derived->name);
-  else
-    sprintf (name, "class$%s", ts->u.derived->name);
-
-  gfc_find_symbol (name, ts->u.derived->ns, 0, &fclass);
-  if (fclass == NULL)
-    {
-      gfc_symtree *st;
-      /* If not there, create a new symbol.  */
-      fclass = gfc_new_symbol (name, ts->u.derived->ns);
-      st = gfc_new_symtree (&ts->u.derived->ns->sym_root, name);
-      st->n.sym = fclass;
-      gfc_set_sym_referenced (fclass);
-      fclass->refs++;
-      fclass->ts.type = BT_UNKNOWN;
-      fclass->attr.abstract = ts->u.derived->attr.abstract;
-      if (ts->u.derived->f2k_derived)
-	fclass->f2k_derived = gfc_get_namespace (NULL, 0);
-      if (gfc_add_flavor (&fclass->attr, FL_DERIVED,
-	  NULL, &gfc_current_locus) == FAILURE)
-	return FAILURE;
-
-      /* Add component '$data'.  */
-      if (gfc_add_component (fclass, "$data", &c) == FAILURE)
-	return FAILURE;
-      c->ts = *ts;
-      c->ts.type = BT_DERIVED;
-      c->attr.access = ACCESS_PRIVATE;
-      c->ts.u.derived = ts->u.derived;
-      c->attr.class_pointer = attr->pointer;
-      c->attr.pointer = attr->pointer || attr->dummy;
-      c->attr.allocatable = attr->allocatable;
-      c->attr.dimension = attr->dimension;
-      c->attr.codimension = attr->codimension;
-      c->attr.abstract = ts->u.derived->attr.abstract;
-      c->as = (*as);
-      c->initializer = NULL;
-
-      /* Add component '$vptr'.  */
-      if (gfc_add_component (fclass, "$vptr", &c) == FAILURE)
-	return FAILURE;
-      c->ts.type = BT_DERIVED;
-      if (delayed_vtab)
-	c->ts.u.derived = NULL;
-      else
-	{
-	  vtab = gfc_find_derived_vtab (ts->u.derived, false);
-	  gcc_assert (vtab);
-	  c->ts.u.derived = vtab->ts.u.derived;
-	}
-      c->attr.pointer = 1;
-    }
-
-  /* Since the extension field is 8 bit wide, we can only have
-     up to 255 extension levels.  */
-  if (ts->u.derived->attr.extension == 255)
-    {
-      gfc_error ("Maximum extension level reached with type '%s' at %L",
-		 ts->u.derived->name, &ts->u.derived->declared_at);
-      return FAILURE;
-    }
-    
-  fclass->attr.extension = ts->u.derived->attr.extension + 1;
-  fclass->attr.is_class = 1;
-  ts->u.derived = fclass;
-  attr->allocatable = attr->pointer = attr->dimension = 0;
-  (*as) = NULL;  /* XXX */
-  return SUCCESS;
-}
-
-
-static void
-add_proc_component (gfc_component *c, gfc_symbol *vtype,
-		    gfc_symtree *st, gfc_symbol *specific,
-		    bool is_generic, bool is_generic_specific)
-{
-  /* Add procedure component.  */
-  if (is_generic)
-    {
-      if (gfc_add_component (vtype, specific->name, &c) == FAILURE)
-	return;
-      c->ts.interface = specific;
-    }
-  else if (c && is_generic_specific)
-    {
-      c->ts.interface = st->n.tb->u.specific->n.sym;
-    }
-  else
-    {
-      c = gfc_find_component (vtype, st->name, true, true);
-      if (!c && gfc_add_component (vtype, st->name, &c) == FAILURE)
-	return;
-      c->ts.interface = st->n.tb->u.specific->n.sym;
-    }
-
-  if (!c->tb)
-    c->tb = XCNEW (gfc_typebound_proc);
-  *c->tb = *st->n.tb;
-  c->tb->ppc = 1;
-  c->attr.procedure = 1;
-  c->attr.proc_pointer = 1;
-  c->attr.flavor = FL_PROCEDURE;
-  c->attr.access = ACCESS_PRIVATE;
-  c->attr.external = 1;
-  c->attr.untyped = 1;
-  c->attr.if_source = IFSRC_IFBODY;
-
-  /* A static initializer cannot be used here because the specific
-     function is not a constant; internal compiler error: in
-     output_constant, at varasm.c:4623  */
-  c->initializer = NULL;
-}
-
-
-static void
-add_proc_comps (gfc_component *c, gfc_symbol *vtype,
-		gfc_symtree *st, bool is_generic)
-{
-  if (c == NULL && !is_generic)
-    {
-      add_proc_component (c, vtype, st, NULL, false, false);
-    }
-  else if (is_generic && st->n.tb && vtype->components == NULL)
-    {
-      gfc_tbp_generic* g;
-      gfc_symbol * specific;
-      for (g = st->n.tb->u.generic; g; g = g->next)
-	{
-	  if (!g->specific)
-	    continue;
-	  specific = g->specific->u.specific->n.sym;
-	  add_proc_component (NULL, vtype, st, specific, true, false);
-	}
-    }
-  else if (c->attr.proc_pointer && c->tb)
-    {
-      *c->tb = *st->n.tb;
-      c->tb->ppc = 1;
-      c->ts.interface = st->n.tb->u.specific->n.sym;	  
-    }
-}
-
-static void
-add_procs_to_declared_vtab1 (gfc_symtree *st, gfc_symbol *vtype,
-			     bool resolved)
-{
-  gfc_component *c;
-  gfc_symbol *generic;
-  char name[3 * GFC_MAX_SYMBOL_LEN + 10];
-
-  if (!st)
-    return;
-
-  if (st->left)
-    add_procs_to_declared_vtab1 (st->left, vtype, resolved);
-
-  if (st->right)
-    add_procs_to_declared_vtab1 (st->right, vtype, resolved);
-
-  if (!st->n.tb)
-    return;
-
-  if (!st->n.tb->is_generic && st->n.tb->u.specific)
-    {
-      c = gfc_find_component (vtype, st->name, true, true);
-      add_proc_comps (c, vtype, st, false);
-    }
-  else if (st->n.tb->is_generic)
-    {
-      c = gfc_find_component (vtype, st->name, true, true);
-
-      if (c == NULL)
-	{
-	  /* Add derived type component with generic name.  */
-	  if (gfc_add_component (vtype, st->name, &c) == FAILURE)
-	    return;
-	  c->ts.type = BT_DERIVED;
-	  c->attr.flavor = FL_VARIABLE;
-	  c->attr.pointer = 1;
-
-	  /* Add a special empty derived type as a placeholder.  */
-	  sprintf (name, "$empty");
-	  gfc_find_symbol (name, vtype->ns, 0, &generic);
-	  if (generic == NULL)
-	    {
-	      gfc_get_symbol (name, vtype->ns, &generic);
-	      generic->attr.flavor = FL_DERIVED;
-	      generic->refs++;
-	      gfc_set_sym_referenced (generic);
-	      generic->ts.type = BT_UNKNOWN;
-	      generic->attr.zero_comp = 1;
-	    }
-
-	  c->ts.u.derived = generic;
-	}
-    }
-}
-
-
-static void
-copy_vtab_proc_comps (gfc_symbol *declared, gfc_symbol *vtype,
-		      bool resolved)
-{
-  gfc_component *c, *cmp;
-  gfc_symbol *vtab;
-
-  vtab = gfc_find_derived_vtab (declared, resolved);
-
-  for (cmp = vtab->ts.u.derived->components; cmp; cmp = cmp->next)
-    {
-      if (gfc_find_component (vtype, cmp->name, true, true))
-	continue;
-
-      if (gfc_add_component (vtype, cmp->name, &c) == FAILURE)
-	return;
-
-      if (cmp->ts.type == BT_DERIVED)
-	{
-	  c->ts = cmp->ts;
-	  c->ts.u.derived = cmp->ts.u.derived;
-	  c->attr.flavor = FL_VARIABLE;
-	  c->attr.pointer = 1;
-	  c->initializer = NULL;
-	  continue;
-	}
-
-      c->tb = XCNEW (gfc_typebound_proc);
-      *c->tb = *cmp->tb;
-      c->attr.procedure = 1;
-      c->attr.proc_pointer = 1;
-      c->attr.flavor = FL_PROCEDURE;
-      c->attr.access = ACCESS_PRIVATE;
-      c->attr.external = 1;
-      c->ts.interface = cmp->ts.interface;
-      c->attr.untyped = 1;
-      c->attr.if_source = IFSRC_IFBODY;
-      c->initializer = NULL;
-    }
-}
-
-static void
-add_procs_to_declared_vtab (gfc_symbol *declared, gfc_symbol *vtype,
-			    gfc_symbol *derived, bool resolved)
-{
-  gfc_symbol* super_type;
-
-  super_type = gfc_get_derived_super_type (declared);
-
-  if (super_type && (super_type != declared))
-    add_procs_to_declared_vtab (super_type, vtype, derived, resolved);
-
-  if (declared != derived)
-    copy_vtab_proc_comps (declared, vtype, resolved);
-
-  if (declared->f2k_derived && declared->f2k_derived->tb_sym_root)
-    add_procs_to_declared_vtab1 (declared->f2k_derived->tb_sym_root,
-				 vtype, resolved);
-
-  if (declared->f2k_derived && declared->f2k_derived->tb_uop_root)
-    add_procs_to_declared_vtab1 (declared->f2k_derived->tb_uop_root,
-				 vtype, resolved);
-}
-
-
-static
-void add_generic_specifics (gfc_symbol *declared, gfc_symbol *vtab,
-			    const char *name)
-{
-  gfc_tbp_generic* g;
-  gfc_symbol * specific1;
-  gfc_symbol * specific2;
-  gfc_symtree *st = NULL;
-  gfc_component *c;
-
-  /* Find the generic procedure using the component name.  */
-  st = gfc_find_typebound_proc (declared, NULL, name, true, NULL);
-  if (st == NULL)
-    st = gfc_find_typebound_user_op (declared, NULL, name, true, NULL);
-
-  if (st == NULL)
-    return;
-
-  /* Add procedure pointer components for the specific procedures. */
-  for (g = st->n.tb->u.generic; g; g = g->next)
-    {
-      if (!g->specific)
-	continue;
-      specific1 = g->specific_st->n.tb->u.specific->n.sym;
-
-      c = vtab->ts.u.derived->components;
-      specific2 = NULL;
-
-      /* Override identical specific interface.  */
-      if (vtab->ts.u.derived->components)
-	{
-	  for (; c; c= c->next)
-	    {
-	      specific2 = c->ts.interface;
-	      if (gfc_compare_interfaces (specific2, specific1,
-					  specific1->name, 0, 0, NULL, 0))
-		break;
-	    }
-	}
-
-      add_proc_component (c, vtab->ts.u.derived, g->specific_st,
-			  NULL, false, true);
-      vtab->ts.u.derived->attr.zero_comp = 0;
-    }
-}
-
-
-static void
-add_generics_to_declared_vtab (gfc_symbol *declared, gfc_symbol *vtype,
-			       gfc_symbol *derived, bool resolved)
-{
-  gfc_component *cmp;
-  gfc_symtree *st = NULL;
-  gfc_symbol * vtab;
-  char name[2 * GFC_MAX_SYMBOL_LEN + 8];
-  gfc_symbol* super_type;
-
-  gcc_assert (resolved);
-
-  for (cmp = vtype->components; cmp; cmp = cmp->next)
-    {
-      if (cmp->ts.type != BT_DERIVED)
-	continue;
-
-      /* The only derived type that does not represent a generic
-	 procedure is the pointer to the parent vtab.  */
-      if (cmp->ts.u.derived
-	    && strcmp (cmp->ts.u.derived->name, "$extends") == 0)
-	continue;
-
-      /* Find the generic procedure using the component name.  */
-      st = gfc_find_typebound_proc (declared, NULL, cmp->name,
-				    true, NULL);
-      if (st == NULL)
-	st = gfc_find_typebound_user_op (declared, NULL, cmp->name,
-					 true, NULL);
-
-      /* Should be an error but we pass on it for now.  */
-      if (st == NULL || !st->n.tb->is_generic)
-	continue;
-
-      vtab = NULL;
-
-      /* Build a vtab and a special vtype, with only the procedure
-	 pointer fields, to carry the pointers to the specific
-	 procedures.  Should this name ever be changed, the same
-	 should be done in trans-expr.c(gfc_trans_assign_vtab_procs). */
-      sprintf (name, "vtab$%s$%s", vtype->name, cmp->name);
-      gfc_find_symbol (name, derived->ns, 0, &vtab);
-      if (vtab == NULL)
-	{
-	  gfc_get_symbol (name, derived->ns, &vtab);
-	  vtab->ts.type = BT_DERIVED;
-	  vtab->attr.flavor = FL_VARIABLE;
-	  vtab->attr.target = 1;
-	  vtab->attr.save = SAVE_EXPLICIT;
-	  vtab->attr.vtab = 1;
-	  vtab->refs++;
-	  gfc_set_sym_referenced (vtab);
-	  sprintf (name, "%s$%s", vtype->name, cmp->name);
-	  
-	  gfc_find_symbol (name, derived->ns, 0, &cmp->ts.u.derived);
-	  if (cmp->ts.u.derived == NULL
-		|| (strcmp (cmp->ts.u.derived->name, "$empty") == 0))
-	    {
-	      gfc_get_symbol (name, derived->ns, &cmp->ts.u.derived);
-	      if (gfc_add_flavor (&cmp->ts.u.derived->attr, FL_DERIVED,
-				  NULL, &gfc_current_locus) == FAILURE)
-		return;
-	      cmp->ts.u.derived->refs++;
-	      gfc_set_sym_referenced (cmp->ts.u.derived);
-	      cmp->ts.u.derived->attr.vtype = 1;
-	      cmp->ts.u.derived->attr.zero_comp = 1;
-	    }
-	  vtab->ts.u.derived = cmp->ts.u.derived;
-	}
-
-      /* Store this for later use in setting the pointer.  */
-      cmp->ts.interface = vtab;
-
-      if (vtab->ts.u.derived->components)
-	continue;
-
-      super_type = gfc_get_derived_super_type (declared);
-
-      if (super_type && (super_type != declared))
-	add_generic_specifics (super_type, vtab, cmp->name);
-
-      add_generic_specifics (declared, vtab, cmp->name);
-    }
-}
-
-
-/* Find the symbol for a derived type's vtab.  A vtab has the following
-   fields:
-   $hash	a hash value used to identify the derived type
-   $size	the size in bytes of the derived type
-   $extends	a pointer to the vtable of the parent derived type
-   then:
-   procedure pointer components for the specific typebound procedures
-   structure pointers to reduced vtabs that contain procedure
-   pointers to the specific procedures.  */
-
-gfc_symbol *
-gfc_find_derived_vtab (gfc_symbol *derived, bool resolved)
-{
-  gfc_namespace *ns;
-  gfc_symbol *vtab = NULL, *vtype = NULL;
-  char name[2 * GFC_MAX_SYMBOL_LEN + 8];
-
-  ns = gfc_current_ns;
-
-  for (; ns; ns = ns->parent)
-    if (!ns->parent)
-      break;
-
-  if (ns)
-    {
-      sprintf (name, "vtab$%s", derived->name);
-      gfc_find_symbol (name, ns, 0, &vtab);
-
-      if (vtab == NULL)
-	{
-	  gfc_get_symbol (name, ns, &vtab);
-	  vtab->ts.type = BT_DERIVED;
-	  vtab->attr.flavor = FL_VARIABLE;
-	  vtab->attr.target = 1;
-	  vtab->attr.save = SAVE_EXPLICIT;
-	  vtab->attr.vtab = 1;
-	  vtab->refs++;
-	  gfc_set_sym_referenced (vtab);
-	  sprintf (name, "vtype$%s", derived->name);
-	  
-	  gfc_find_symbol (name, ns, 0, &vtype);
-	  if (vtype == NULL)
-	    {
-	      gfc_component *c;
-	      gfc_symbol *parent = NULL, *parent_vtab = NULL;
-
-	      gfc_get_symbol (name, ns, &vtype);
-	      if (gfc_add_flavor (&vtype->attr, FL_DERIVED,
-				  NULL, &gfc_current_locus) == FAILURE)
-		return NULL;
-	      vtype->refs++;
-	      gfc_set_sym_referenced (vtype);
-
-	      /* Add component '$hash'.  */
-	      if (gfc_add_component (vtype, "$hash", &c) == FAILURE)
-		return NULL;
-	      c->ts.type = BT_INTEGER;
-	      c->ts.kind = 4;
-	      c->attr.access = ACCESS_PRIVATE;
-	      c->initializer = gfc_get_int_expr (gfc_default_integer_kind,
-						 NULL, derived->hash_value);
-
-	      /* Add component '$size'.  */
-	      if (gfc_add_component (vtype, "$size", &c) == FAILURE)
-		return NULL;
-	      c->ts.type = BT_INTEGER;
-	      c->ts.kind = 4;
-	      c->attr.access = ACCESS_PRIVATE;
-	      /* Remember the derived type in ts.u.derived,
-		 so that the correct initializer can be set later on
-		 (in gfc_conv_structure).  */
-	      c->ts.u.derived = derived;
-	      c->initializer = gfc_get_int_expr (gfc_default_integer_kind,
-						 NULL, 0);
-
-	      /* Add component $extends.  */
-	      if (gfc_add_component (vtype, "$extends", &c) == FAILURE)
-		return NULL;
-	      c->attr.pointer = 1;
-	      c->attr.access = ACCESS_PRIVATE;
-	      parent = gfc_get_derived_super_type (derived);
-	      if (parent)
-		{
-		  parent_vtab = gfc_find_derived_vtab (parent, resolved);
-		  c->ts.type = BT_DERIVED;
-		  c->ts.u.derived = parent_vtab->ts.u.derived;
-		  c->initializer = gfc_get_expr ();
-		  c->initializer->expr_type = EXPR_VARIABLE;
-		  gfc_find_sym_tree (parent_vtab->name, parent_vtab->ns,
-				     0, &c->initializer->symtree);
-		}
-	      else
-		{
-		  c->ts.type = BT_DERIVED;
-		  c->ts.u.derived = vtype;
-		  c->initializer = gfc_get_null_expr (NULL);
-		}
-
-	      add_procs_to_declared_vtab (derived, vtype, derived, resolved);
-	      vtype->attr.vtype = 1;
-	    }
-
-	  vtab->ts.u.derived = vtype;
-	  vtab->value = gfc_default_initializer (&vtab->ts);
-	}
-    }
-
-  /* Catch the call just before the backend declarations are built, so that
-     the generic procedures have been resolved and the specific procedures
-     have formal interfaces that can be compared.  */
-  if (resolved
-	&& vtab->ts.u.derived
-	&& vtab->ts.u.derived->backend_decl == NULL)
-    add_generics_to_declared_vtab (derived, vtab->ts.u.derived,
-				   derived, resolved);
-
-  return vtab;
-}
-
-
-/* General worker function to find either a type-bound procedure or a
-   type-bound user operator.  */
-
-static gfc_symtree*
-find_typebound_proc_uop (gfc_symbol* derived, gfc_try* t,
-			 const char* name, bool noaccess, bool uop,
-			 locus* where)
-{
-  gfc_symtree* res;
-  gfc_symtree* root;
-
-  /* Set correct symbol-root.  */
-  gcc_assert (derived->f2k_derived);
-  root = (uop ? derived->f2k_derived->tb_uop_root
-	      : derived->f2k_derived->tb_sym_root);
-
-  /* Set default to failure.  */
-  if (t)
-    *t = FAILURE;
-
-  /* Try to find it in the current type's namespace.  */
-  res = gfc_find_symtree (root, name);
-  if (res && res->n.tb && !res->n.tb->error)
-    {
-      /* We found one.  */
-      if (t)
-	*t = SUCCESS;
-
-      if (!noaccess && derived->attr.use_assoc
-	  && res->n.tb->access == ACCESS_PRIVATE)
-	{
-	  if (where)
-	    gfc_error ("'%s' of '%s' is PRIVATE at %L",
-		       name, derived->name, where);
-	  if (t)
-	    *t = FAILURE;
-	}
-
-      return res;
-    }
-
-  /* Otherwise, recurse on parent type if derived is an extension.  */
-  if (derived->attr.extension)
-    {
-      gfc_symbol* super_type;
-      super_type = gfc_get_derived_super_type (derived);
-      gcc_assert (super_type);
-
-      return find_typebound_proc_uop (super_type, t, name,
-				      noaccess, uop, where);
-    }
-
-  /* Nothing found.  */
-  return NULL;
-}
-
-
-/* Find a type-bound procedure or user operator by name for a derived-type
-   (looking recursively through the super-types).  */
-
-gfc_symtree*
-gfc_find_typebound_proc (gfc_symbol* derived, gfc_try* t,
-			 const char* name, bool noaccess, locus* where)
-{
-  return find_typebound_proc_uop (derived, t, name, noaccess, false, where);
-}
-
-gfc_symtree*
-gfc_find_typebound_user_op (gfc_symbol* derived, gfc_try* t,
-			    const char* name, bool noaccess, locus* where)
-{
-  return find_typebound_proc_uop (derived, t, name, noaccess, true, where);
-}
-
-
-/* Find a type-bound intrinsic operator looking recursively through the
-   super-type hierarchy.  */
-
-gfc_typebound_proc*
-gfc_find_typebound_intrinsic_op (gfc_symbol* derived, gfc_try* t,
-				 gfc_intrinsic_op op, bool noaccess,
-				 locus* where)
-{
-  gfc_typebound_proc* res;
-
-  /* Set default to failure.  */
-  if (t)
-    *t = FAILURE;
-
-  /* Try to find it in the current type's namespace.  */
-  if (derived->f2k_derived)
-    res = derived->f2k_derived->tb_op[op];
-  else  
-    res = NULL;
-
-  /* Check access.  */
-  if (res && !res->error)
-    {
-      /* We found one.  */
-      if (t)
-	*t = SUCCESS;
-
-      if (!noaccess && derived->attr.use_assoc
-	  && res->access == ACCESS_PRIVATE)
-	{
-	  if (where)
-	    gfc_error ("'%s' of '%s' is PRIVATE at %L",
-		       gfc_op2string (op), derived->name, where);
-	  if (t)
-	    *t = FAILURE;
-	}
-
-      return res;
-    }
-
-  /* Otherwise, recurse on parent type if derived is an extension.  */
-  if (derived->attr.extension)
-    {
-      gfc_symbol* super_type;
-      super_type = gfc_get_derived_super_type (derived);
-      gcc_assert (super_type);
-
-      return gfc_find_typebound_intrinsic_op (super_type, t, op,
-					      noaccess, where);
-    }
-
-  /* Nothing found.  */
-  return NULL;
-}
-
-
-/* Get a typebound-procedure symtree or create and insert it if not yet
-   present.  This is like a very simplified version of gfc_get_sym_tree for
-   tbp-symtrees rather than regular ones.  */
-
-gfc_symtree*
-gfc_get_tbp_symtree (gfc_symtree **root, const char *name)
-{
-  gfc_symtree *result;
-
-  result = gfc_find_symtree (*root, name);
-  if (!result)
-    {
-      result = gfc_new_symtree (root, name);
-      gcc_assert (result);
-      result->n.tb = NULL;
-    }
-
-  return result;
-}