Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0.

These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.

1 files changed, 1433 insertions, 0 deletions

diff --git a/contrib/gcc/attribs.c b/contrib/gcc/attribs.c
new file mode 100644
index 0000000..7cb1172
--- /dev/null
+++ b/contrib/gcc/attribs.c
@@ -0,0 +1,1433 @@
+/* Functions dealing with attribute handling, used by most front ends.
+   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+   2002 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.  */
+
+#include "config.h"
+#include "system.h"
+#include "tree.h"
+#include "flags.h"
+#include "toplev.h"
+#include "output.h"
+#include "rtl.h"
+#include "ggc.h"
+#include "expr.h"
+#include "tm_p.h"
+#include "obstack.h"
+#include "cpplib.h"
+#include "target.h"
+
+static void init_attributes		PARAMS ((void));
+
+/* Table of the tables of attributes (common, format, language, machine)
+   searched.  */
+static const struct attribute_spec *attribute_tables[4];
+
+static bool attributes_initialized = false;
+
+static tree handle_packed_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_nocommon_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_common_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_noreturn_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_noinline_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_used_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_unused_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_const_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_transparent_union_attribute PARAMS ((tree *, tree, tree,
+							int, bool *));
+static tree handle_constructor_attribute PARAMS ((tree *, tree, tree, int,
+						  bool *));
+static tree handle_destructor_attribute PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_mode_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_section_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_aligned_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_weak_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_alias_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_no_instrument_function_attribute PARAMS ((tree *, tree,
+							     tree, int,
+							     bool *));
+static tree handle_malloc_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_no_limit_stack_attribute PARAMS ((tree *, tree, tree, int,
+						     bool *));
+static tree handle_pure_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_deprecated_attribute	PARAMS ((tree *, tree, tree, int,
+						 bool *));
+static tree handle_vector_size_attribute PARAMS ((tree *, tree, tree, int,
+						  bool *));
+static tree vector_size_helper PARAMS ((tree, tree));
+
+/* Table of machine-independent attributes common to all C-like languages.  */
+static const struct attribute_spec c_common_attribute_table[] =
+{
+  /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
+  { "packed",                 0, 0, false, false, false,
+      			      handle_packed_attribute },
+  { "nocommon",               0, 0, true,  false, false,
+			      handle_nocommon_attribute },
+  { "common",                 0, 0, true,  false, false,
+			      handle_common_attribute },
+  /* FIXME: logically, noreturn attributes should be listed as
+     "false, true, true" and apply to function types.  But implementing this
+     would require all the places in the compiler that use TREE_THIS_VOLATILE
+     on a decl to identify non-returning functions to be located and fixed
+     to check the function type instead.  */
+  { "noreturn",               0, 0, true,  false, false,
+			      handle_noreturn_attribute },
+  { "volatile",               0, 0, true,  false, false,
+			      handle_noreturn_attribute },
+  { "noinline",               0, 0, true,  false, false,
+			      handle_noinline_attribute },
+  { "used",                   0, 0, true,  false, false,
+			      handle_used_attribute },
+  { "unused",                 0, 0, false, false, false,
+			      handle_unused_attribute },
+  /* The same comments as for noreturn attributes apply to const ones.  */
+  { "const",                  0, 0, true,  false, false,
+			      handle_const_attribute },
+  { "transparent_union",      0, 0, false, false, false,
+			      handle_transparent_union_attribute },
+  { "constructor",            0, 0, true,  false, false,
+			      handle_constructor_attribute },
+  { "destructor",             0, 0, true,  false, false,
+			      handle_destructor_attribute },
+  { "mode",                   1, 1, false,  true, false,
+			      handle_mode_attribute },
+  { "section",                1, 1, true,  false, false,
+			      handle_section_attribute },
+  { "aligned",                0, 1, false, false, false,
+			      handle_aligned_attribute },
+  { "weak",                   0, 0, true,  false, false,
+			      handle_weak_attribute },
+  { "alias",                  1, 1, true,  false, false,
+			      handle_alias_attribute },
+  { "no_instrument_function", 0, 0, true,  false, false,
+			      handle_no_instrument_function_attribute },
+  { "malloc",                 0, 0, true,  false, false,
+			      handle_malloc_attribute },
+  { "no_stack_limit",         0, 0, true,  false, false,
+			      handle_no_limit_stack_attribute },
+  { "pure",                   0, 0, true,  false, false,
+			      handle_pure_attribute },
+  { "deprecated",             0, 0, false, false, false,
+			      handle_deprecated_attribute },
+  { "vector_size",	      1, 1, false, true, false,
+			      handle_vector_size_attribute },
+  { NULL,                     0, 0, false, false, false, NULL }
+};
+
+/* Default empty table of attributes.  */
+static const struct attribute_spec empty_attribute_table[] =
+{
+  { NULL, 0, 0, false, false, false, NULL }
+};
+
+/* Table of machine-independent attributes for checking formats, if used.  */
+const struct attribute_spec *format_attribute_table = empty_attribute_table;
+
+/* Table of machine-independent attributes for a particular language.  */
+const struct attribute_spec *lang_attribute_table = empty_attribute_table;
+
+/* Flag saying whether common language attributes are to be supported.  */
+int lang_attribute_common = 1;
+
+/* Initialize attribute tables, and make some sanity checks
+   if --enable-checking.  */
+
+static void
+init_attributes ()
+{
+#ifdef ENABLE_CHECKING
+  int i;
+#endif
+
+  attribute_tables[0]
+    = lang_attribute_common ? c_common_attribute_table : empty_attribute_table;
+  attribute_tables[1] = lang_attribute_table;
+  attribute_tables[2] = format_attribute_table;
+  attribute_tables[3] = targetm.attribute_table;
+
+#ifdef ENABLE_CHECKING
+  /* Make some sanity checks on the attribute tables.  */
+  for (i = 0;
+       i < (int) (sizeof (attribute_tables) / sizeof (attribute_tables[0]));
+       i++)
+    {
+      int j;
+
+      for (j = 0; attribute_tables[i][j].name != NULL; j++)
+	{
+	  /* The name must not begin and end with __.  */
+	  const char *name = attribute_tables[i][j].name;
+	  int len = strlen (name);
+	  if (name[0] == '_' && name[1] == '_'
+	      && name[len - 1] == '_' && name[len - 2] == '_')
+	    abort ();
+	  /* The minimum and maximum lengths must be consistent.  */
+	  if (attribute_tables[i][j].min_length < 0)
+	    abort ();
+	  if (attribute_tables[i][j].max_length != -1
+	      && (attribute_tables[i][j].max_length
+		  < attribute_tables[i][j].min_length))
+	    abort ();
+	  /* An attribute cannot require both a DECL and a TYPE.  */
+	  if (attribute_tables[i][j].decl_required
+	      && attribute_tables[i][j].type_required)
+	    abort ();
+	  /* If an attribute requires a function type, in particular
+	     it requires a type.  */
+	  if (attribute_tables[i][j].function_type_required
+	      && !attribute_tables[i][j].type_required)
+	    abort ();
+	}
+    }
+
+  /* Check that each name occurs just once in each table.  */
+  for (i = 0;
+       i < (int) (sizeof (attribute_tables) / sizeof (attribute_tables[0]));
+       i++)
+    {
+      int j, k;
+      for (j = 0; attribute_tables[i][j].name != NULL; j++)
+	for (k = j + 1; attribute_tables[i][k].name != NULL; k++)
+	  if (!strcmp (attribute_tables[i][j].name,
+		       attribute_tables[i][k].name))
+	    abort ();
+    }
+  /* Check that no name occurs in more than one table.  */
+  for (i = 0;
+       i < (int) (sizeof (attribute_tables) / sizeof (attribute_tables[0]));
+       i++)
+    {
+      int j, k, l;
+
+      for (j = i + 1;
+	   j < ((int) (sizeof (attribute_tables)
+		       / sizeof (attribute_tables[0])));
+	   j++)
+	for (k = 0; attribute_tables[i][k].name != NULL; k++)
+	  for (l = 0; attribute_tables[j][l].name != NULL; l++)
+	    if (!strcmp (attribute_tables[i][k].name,
+			 attribute_tables[j][l].name))
+	      abort ();
+    }
+#endif
+
+  attributes_initialized = true;
+}
+
+/* Process the attributes listed in ATTRIBUTES and install them in *NODE,
+   which is either a DECL (including a TYPE_DECL) or a TYPE.  If a DECL,
+   it should be modified in place; if a TYPE, a copy should be created
+   unless ATTR_FLAG_TYPE_IN_PLACE is set in FLAGS.  FLAGS gives further
+   information, in the form of a bitwise OR of flags in enum attribute_flags
+   from tree.h.  Depending on these flags, some attributes may be
+   returned to be applied at a later stage (for example, to apply
+   a decl attribute to the declaration rather than to its type).  If
+   ATTR_FLAG_BUILT_IN is not set and *NODE is a DECL, then also consider
+   whether there might be some default attributes to apply to this DECL;
+   if so, decl_attributes will be called recursively with those attributes
+   and ATTR_FLAG_BUILT_IN set.  */
+
+tree
+decl_attributes (node, attributes, flags)
+     tree *node, attributes;
+     int flags;
+{
+  tree a;
+  tree returned_attrs = NULL_TREE;
+
+  if (!attributes_initialized)
+    init_attributes ();
+
+  (*targetm.insert_attributes) (*node, &attributes);
+
+  if (DECL_P (*node) && TREE_CODE (*node) == FUNCTION_DECL
+      && !(flags & (int) ATTR_FLAG_BUILT_IN))
+    insert_default_attributes (*node);
+
+  for (a = attributes; a; a = TREE_CHAIN (a))
+    {
+      tree name = TREE_PURPOSE (a);
+      tree args = TREE_VALUE (a);
+      tree *anode = node;
+      const struct attribute_spec *spec = NULL;
+      bool no_add_attrs = 0;
+      int i;
+
+      for (i = 0;
+	   i < ((int) (sizeof (attribute_tables)
+		       / sizeof (attribute_tables[0])));
+	   i++)
+	{
+	  int j;
+
+	  for (j = 0; attribute_tables[i][j].name != NULL; j++)
+	    {
+	      if (is_attribute_p (attribute_tables[i][j].name, name))
+		{
+		  spec = &attribute_tables[i][j];
+		  break;
+		}
+	    }
+	  if (spec != NULL)
+	    break;
+	}
+
+      if (spec == NULL)
+	{
+	  warning ("`%s' attribute directive ignored",
+		   IDENTIFIER_POINTER (name));
+	  continue;
+	}
+      else if (list_length (args) < spec->min_length
+	       || (spec->max_length >= 0
+		   && list_length (args) > spec->max_length))
+	{
+	  error ("wrong number of arguments specified for `%s' attribute",
+		 IDENTIFIER_POINTER (name));
+	  continue;
+	}
+
+      if (spec->decl_required && !DECL_P (*anode))
+	{
+	  if (flags & ((int) ATTR_FLAG_DECL_NEXT
+		       | (int) ATTR_FLAG_FUNCTION_NEXT
+		       | (int) ATTR_FLAG_ARRAY_NEXT))
+	    {
+	      /* Pass on this attribute to be tried again.  */
+	      returned_attrs = tree_cons (name, args, returned_attrs);
+	      continue;
+	    }
+	  else
+	    {
+	      warning ("`%s' attribute does not apply to types",
+		       IDENTIFIER_POINTER (name));
+	      continue;
+	    }
+	}
+
+      /* If we require a type, but were passed a decl, set up to make a
+	 new type and update the one in the decl.  ATTR_FLAG_TYPE_IN_PLACE
+	 would have applied if we'd been passed a type, but we cannot modify
+	 the decl's type in place here.  */
+      if (spec->type_required && DECL_P (*anode))
+	{
+	  anode = &TREE_TYPE (*anode);
+	  flags &= ~(int) ATTR_FLAG_TYPE_IN_PLACE;
+	}
+
+      if (spec->function_type_required && TREE_CODE (*anode) != FUNCTION_TYPE
+	  && TREE_CODE (*anode) != METHOD_TYPE)
+	{
+	  if (TREE_CODE (*anode) == POINTER_TYPE
+	      && (TREE_CODE (TREE_TYPE (*anode)) == FUNCTION_TYPE
+		  || TREE_CODE (TREE_TYPE (*anode)) == METHOD_TYPE))
+	    {
+	      if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
+		*anode = build_type_copy (*anode);
+	      anode = &TREE_TYPE (*anode);
+	    }
+	  else if (flags & (int) ATTR_FLAG_FUNCTION_NEXT)
+	    {
+	      /* Pass on this attribute to be tried again.  */
+	      returned_attrs = tree_cons (name, args, returned_attrs);
+	      continue;
+	    }
+
+	  if (TREE_CODE (*anode) != FUNCTION_TYPE
+	      && TREE_CODE (*anode) != METHOD_TYPE)
+	    {
+	      warning ("`%s' attribute only applies to function types",
+		       IDENTIFIER_POINTER (name));
+	      continue;
+	    }
+	}
+
+      if (spec->handler != NULL)
+	returned_attrs = chainon ((*spec->handler) (anode, name, args,
+						    flags, &no_add_attrs),
+				  returned_attrs);
+
+      /* Layout the decl in case anything changed.  */
+      if (spec->type_required && DECL_P (*node)
+	  && TREE_CODE (*node) == VAR_DECL)
+	{
+	  /* Force a recalculation of mode and size.  */
+	  DECL_MODE (*node) = VOIDmode;
+	  DECL_SIZE (*node) = 0;
+
+	  layout_decl (*node, 0);
+	}
+
+      if (!no_add_attrs)
+	{
+	  tree old_attrs;
+	  tree a;
+
+	  if (DECL_P (*anode))
+	    old_attrs = DECL_ATTRIBUTES (*anode);
+	  else
+	    old_attrs = TYPE_ATTRIBUTES (*anode);
+
+	  for (a = lookup_attribute (spec->name, old_attrs);
+	       a != NULL_TREE;
+	       a = lookup_attribute (spec->name, TREE_CHAIN (a)))
+	    {
+	      if (simple_cst_equal (TREE_VALUE (a), args) == 1)
+		break;
+	    }
+
+	  if (a == NULL_TREE)
+	    {
+	      /* This attribute isn't already in the list.  */
+	      if (DECL_P (*anode))
+		DECL_ATTRIBUTES (*anode) = tree_cons (name, args, old_attrs);
+	      else if (flags & (int) ATTR_FLAG_TYPE_IN_PLACE)
+		TYPE_ATTRIBUTES (*anode) = tree_cons (name, args, old_attrs);
+	      else
+		*anode = build_type_attribute_variant (*anode,
+						       tree_cons (name, args,
+								  old_attrs));
+	    }
+	}
+    }
+
+  return returned_attrs;
+}
+
+/* Handle a "packed" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_packed_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags;
+     bool *no_add_attrs;
+{
+  tree *type = NULL;
+  if (DECL_P (*node))
+    {
+      if (TREE_CODE (*node) == TYPE_DECL)
+	type = &TREE_TYPE (*node);
+    }
+  else
+    type = node;
+
+  if (type)
+    {
+      if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
+	*type = build_type_copy (*type);
+      TYPE_PACKED (*type) = 1;
+    }
+  else if (TREE_CODE (*node) == FIELD_DECL)
+    DECL_PACKED (*node) = 1;
+  /* We can't set DECL_PACKED for a VAR_DECL, because the bit is
+     used for DECL_REGISTER.  It wouldn't mean anything anyway.  */
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "nocommon" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_nocommon_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  if (TREE_CODE (*node) == VAR_DECL)
+    DECL_COMMON (*node) = 0;
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "common" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_common_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  if (TREE_CODE (*node) == VAR_DECL)
+    DECL_COMMON (*node) = 1;
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "noreturn" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_noreturn_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree type = TREE_TYPE (*node);
+
+  /* See FIXME comment in c_common_attribute_table.  */
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    TREE_THIS_VOLATILE (*node) = 1;
+  else if (TREE_CODE (type) == POINTER_TYPE
+	   && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
+    TREE_TYPE (*node)
+      = build_pointer_type
+	(build_type_variant (TREE_TYPE (type),
+			     TREE_READONLY (TREE_TYPE (type)), 1));
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "noinline" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_noinline_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    DECL_UNINLINABLE (*node) = 1;
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "used" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_used_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (*node))
+      = TREE_USED (*node) = 1;
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "unused" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_unused_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags;
+     bool *no_add_attrs;
+{
+  if (DECL_P (*node))
+    {
+      tree decl = *node;
+
+      if (TREE_CODE (decl) == PARM_DECL
+	  || TREE_CODE (decl) == VAR_DECL
+	  || TREE_CODE (decl) == FUNCTION_DECL
+	  || TREE_CODE (decl) == LABEL_DECL
+	  || TREE_CODE (decl) == TYPE_DECL)
+	TREE_USED (decl) = 1;
+      else
+	{
+	  warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+	  *no_add_attrs = true;
+	}
+    }
+  else
+    {
+      if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
+	*node = build_type_copy (*node);
+      TREE_USED (*node) = 1;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "const" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_const_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree type = TREE_TYPE (*node);
+
+  /* See FIXME comment on noreturn in c_common_attribute_table.  */
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    TREE_READONLY (*node) = 1;
+  else if (TREE_CODE (type) == POINTER_TYPE
+	   && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
+    TREE_TYPE (*node)
+      = build_pointer_type
+	(build_type_variant (TREE_TYPE (type), 1,
+			     TREE_THIS_VOLATILE (TREE_TYPE (type))));
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "transparent_union" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_transparent_union_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags;
+     bool *no_add_attrs;
+{
+  tree decl = NULL_TREE;
+  tree *type = NULL;
+  int is_type = 0;
+
+  if (DECL_P (*node))
+    {
+      decl = *node;
+      type = &TREE_TYPE (decl);
+      is_type = TREE_CODE (*node) == TYPE_DECL;
+    }
+  else if (TYPE_P (*node))
+    type = node, is_type = 1;
+
+  if (is_type
+      && TREE_CODE (*type) == UNION_TYPE
+      && (decl == 0
+	  || (TYPE_FIELDS (*type) != 0
+	      && TYPE_MODE (*type) == DECL_MODE (TYPE_FIELDS (*type)))))
+    {
+      if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
+	*type = build_type_copy (*type);
+      TYPE_TRANSPARENT_UNION (*type) = 1;
+    }
+  else if (decl != 0 && TREE_CODE (decl) == PARM_DECL
+	   && TREE_CODE (*type) == UNION_TYPE
+	   && TYPE_MODE (*type) == DECL_MODE (TYPE_FIELDS (*type)))
+    DECL_TRANSPARENT_UNION (decl) = 1;
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "constructor" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_constructor_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree decl = *node;
+  tree type = TREE_TYPE (decl);
+
+  if (TREE_CODE (decl) == FUNCTION_DECL
+      && TREE_CODE (type) == FUNCTION_TYPE
+      && decl_function_context (decl) == 0)
+    {
+      DECL_STATIC_CONSTRUCTOR (decl) = 1;
+      TREE_USED (decl) = 1;
+    }
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "destructor" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_destructor_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree decl = *node;
+  tree type = TREE_TYPE (decl);
+
+  if (TREE_CODE (decl) == FUNCTION_DECL
+      && TREE_CODE (type) == FUNCTION_TYPE
+      && decl_function_context (decl) == 0)
+    {
+      DECL_STATIC_DESTRUCTOR (decl) = 1;
+      TREE_USED (decl) = 1;
+    }
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "mode" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_mode_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree type = *node;
+
+  *no_add_attrs = true;
+
+  if (TREE_CODE (TREE_VALUE (args)) != IDENTIFIER_NODE)
+    warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+  else
+    {
+      int j;
+      const char *p = IDENTIFIER_POINTER (TREE_VALUE (args));
+      int len = strlen (p);
+      enum machine_mode mode = VOIDmode;
+      tree typefm;
+
+      if (len > 4 && p[0] == '_' && p[1] == '_'
+	  && p[len - 1] == '_' && p[len - 2] == '_')
+	{
+	  char *newp = (char *) alloca (len - 1);
+
+	  strcpy (newp, &p[2]);
+	  newp[len - 4] = '\0';
+	  p = newp;
+	}
+
+      /* Change this type to have a type with the specified mode.
+	 First check for the special modes.  */
+      if (! strcmp (p, "byte"))
+	mode = byte_mode;
+      else if (!strcmp (p, "word"))
+	mode = word_mode;
+      else if (! strcmp (p, "pointer"))
+	mode = ptr_mode;
+      else
+	for (j = 0; j < NUM_MACHINE_MODES; j++)
+	  if (!strcmp (p, GET_MODE_NAME (j)))
+	    mode = (enum machine_mode) j;
+
+      if (mode == VOIDmode)
+	error ("unknown machine mode `%s'", p);
+      else if (0 == (typefm = type_for_mode (mode,
+					     TREE_UNSIGNED (type))))
+	error ("no data type for mode `%s'", p);
+      else
+	*node = typefm;
+        /* No need to layout the type here.  The caller should do this.  */
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "section" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_section_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name ATTRIBUTE_UNUSED;
+     tree args;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree decl = *node;
+
+  if (targetm.have_named_sections)
+    {
+      if ((TREE_CODE (decl) == FUNCTION_DECL
+	   || TREE_CODE (decl) == VAR_DECL)
+	  && TREE_CODE (TREE_VALUE (args)) == STRING_CST)
+	{
+	  if (TREE_CODE (decl) == VAR_DECL
+	      && current_function_decl != NULL_TREE
+	      && ! TREE_STATIC (decl))
+	    {
+	      error_with_decl (decl,
+			       "section attribute cannot be specified for local variables");
+	      *no_add_attrs = true;
+	    }
+
+	  /* The decl may have already been given a section attribute
+	     from a previous declaration.  Ensure they match.  */
+	  else if (DECL_SECTION_NAME (decl) != NULL_TREE
+		   && strcmp (TREE_STRING_POINTER (DECL_SECTION_NAME (decl)),
+			      TREE_STRING_POINTER (TREE_VALUE (args))) != 0)
+	    {
+	      error_with_decl (*node,
+			       "section of `%s' conflicts with previous declaration");
+	      *no_add_attrs = true;
+	    }
+	  else
+	    DECL_SECTION_NAME (decl) = TREE_VALUE (args);
+	}
+      else
+	{
+	  error_with_decl (*node,
+			   "section attribute not allowed for `%s'");
+	  *no_add_attrs = true;
+	}
+    }
+  else
+    {
+      error_with_decl (*node,
+		       "section attributes are not supported for this target");
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "aligned" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_aligned_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name ATTRIBUTE_UNUSED;
+     tree args;
+     int flags;
+     bool *no_add_attrs;
+{
+  tree decl = NULL_TREE;
+  tree *type = NULL;
+  int is_type = 0;
+  tree align_expr = (args ? TREE_VALUE (args)
+		     : size_int (BIGGEST_ALIGNMENT / BITS_PER_UNIT));
+  int i;
+
+  if (DECL_P (*node))
+    {
+      decl = *node;
+      type = &TREE_TYPE (decl);
+      is_type = TREE_CODE (*node) == TYPE_DECL;
+    }
+  else if (TYPE_P (*node))
+    type = node, is_type = 1;
+
+  /* Strip any NOPs of any kind.  */
+  while (TREE_CODE (align_expr) == NOP_EXPR
+	 || TREE_CODE (align_expr) == CONVERT_EXPR
+	 || TREE_CODE (align_expr) == NON_LVALUE_EXPR)
+    align_expr = TREE_OPERAND (align_expr, 0);
+
+  if (TREE_CODE (align_expr) != INTEGER_CST)
+    {
+      error ("requested alignment is not a constant");
+      *no_add_attrs = true;
+    }
+  else if ((i = tree_log2 (align_expr)) == -1)
+    {
+      error ("requested alignment is not a power of 2");
+      *no_add_attrs = true;
+    }
+  else if (i > HOST_BITS_PER_INT - 2)
+    {
+      error ("requested alignment is too large");
+      *no_add_attrs = true;
+    }
+  else if (is_type)
+    {
+      /* If we have a TYPE_DECL, then copy the type, so that we
+	 don't accidentally modify a builtin type.  See pushdecl.  */
+      if (decl && TREE_TYPE (decl) != error_mark_node
+	  && DECL_ORIGINAL_TYPE (decl) == NULL_TREE)
+	{
+	  tree tt = TREE_TYPE (decl);
+	  *type = build_type_copy (*type);
+	  DECL_ORIGINAL_TYPE (decl) = tt;
+	  TYPE_NAME (*type) = decl;
+	  TREE_USED (*type) = TREE_USED (decl);
+	  TREE_TYPE (decl) = *type;
+	}
+      else if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
+	*type = build_type_copy (*type);
+
+      TYPE_ALIGN (*type) = (1 << i) * BITS_PER_UNIT;
+      TYPE_USER_ALIGN (*type) = 1;
+    }
+  else if (TREE_CODE (decl) != VAR_DECL
+	   && TREE_CODE (decl) != FIELD_DECL)
+    {
+      error_with_decl (decl,
+		       "alignment may not be specified for `%s'");
+      *no_add_attrs = true;
+    }
+  else
+    {
+      DECL_ALIGN (decl) = (1 << i) * BITS_PER_UNIT;
+      DECL_USER_ALIGN (decl) = 1;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "weak" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_weak_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name ATTRIBUTE_UNUSED;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs ATTRIBUTE_UNUSED;
+{
+  declare_weak (*node);
+
+  return NULL_TREE;
+}
+
+/* Handle an "alias" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_alias_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree decl = *node;
+
+  if ((TREE_CODE (decl) == FUNCTION_DECL && DECL_INITIAL (decl))
+      || (TREE_CODE (decl) != FUNCTION_DECL && ! DECL_EXTERNAL (decl)))
+    {
+      error_with_decl (decl,
+		       "`%s' defined both normally and as an alias");
+      *no_add_attrs = true;
+    }
+  else if (decl_function_context (decl) == 0)
+    {
+      tree id;
+
+      id = TREE_VALUE (args);
+      if (TREE_CODE (id) != STRING_CST)
+	{
+	  error ("alias arg not a string");
+	  *no_add_attrs = true;
+	  return NULL_TREE;
+	}
+      id = get_identifier (TREE_STRING_POINTER (id));
+      /* This counts as a use of the object pointed to.  */
+      TREE_USED (id) = 1;
+
+      if (TREE_CODE (decl) == FUNCTION_DECL)
+	DECL_INITIAL (decl) = error_mark_node;
+      else
+	DECL_EXTERNAL (decl) = 0;
+      assemble_alias (decl, id);
+    }
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "no_instrument_function" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_no_instrument_function_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree decl = *node;
+
+  if (TREE_CODE (decl) != FUNCTION_DECL)
+    {
+      error_with_decl (decl,
+		       "`%s' attribute applies only to functions",
+		       IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+  else if (DECL_INITIAL (decl))
+    {
+      error_with_decl (decl,
+		       "can't set `%s' attribute after definition",
+		       IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+  else
+    DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (decl) = 1;
+
+  return NULL_TREE;
+}
+
+/* Handle a "malloc" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_malloc_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    DECL_IS_MALLOC (*node) = 1;
+  /* ??? TODO: Support types.  */
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "no_limit_stack" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_no_limit_stack_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree decl = *node;
+
+  if (TREE_CODE (decl) != FUNCTION_DECL)
+    {
+      error_with_decl (decl,
+		       "`%s' attribute applies only to functions",
+		       IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+  else if (DECL_INITIAL (decl))
+    {
+      error_with_decl (decl,
+		       "can't set `%s' attribute after definition",
+		       IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+  else
+    DECL_NO_LIMIT_STACK (decl) = 1;
+
+  return NULL_TREE;
+}
+
+/* Handle a "pure" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_pure_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    DECL_IS_PURE (*node) = 1;
+  /* ??? TODO: Support types.  */
+  else
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "deprecated" attribute; arguments as in
+   struct attribute_spec.handler.  */
+   
+static tree
+handle_deprecated_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags;
+     bool *no_add_attrs;
+{
+  tree type = NULL_TREE;
+  int warn = 0;
+  const char *what = NULL;
+  
+  if (DECL_P (*node))
+    {
+      tree decl = *node;
+      type = TREE_TYPE (decl);
+      
+      if (TREE_CODE (decl) == TYPE_DECL
+	  || TREE_CODE (decl) == PARM_DECL
+	  || TREE_CODE (decl) == VAR_DECL
+	  || TREE_CODE (decl) == FUNCTION_DECL
+	  || TREE_CODE (decl) == FIELD_DECL)
+	TREE_DEPRECATED (decl) = 1;
+      else
+	warn = 1;
+    }
+  else if (TYPE_P (*node))
+    {
+      if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
+	*node = build_type_copy (*node);
+      TREE_DEPRECATED (*node) = 1;
+      type = *node;
+    }
+  else
+    warn = 1;
+  
+  if (warn)
+    {
+      *no_add_attrs = true;
+      if (type && TYPE_NAME (type))
+	{
+	  if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
+	    what = IDENTIFIER_POINTER (TYPE_NAME (*node));
+	  else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
+		   && DECL_NAME (TYPE_NAME (type)))
+	    what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
+	}
+      if (what)
+	warning ("`%s' attribute ignored for `%s'",
+		  IDENTIFIER_POINTER (name), what);
+      else
+	warning ("`%s' attribute ignored", 
+		      IDENTIFIER_POINTER (name));
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "vector_size" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_vector_size_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  unsigned HOST_WIDE_INT vecsize, nunits;
+  enum machine_mode mode, orig_mode, new_mode;
+  tree type = *node, new_type;
+
+  *no_add_attrs = true;
+
+  if (! host_integerp (TREE_VALUE (args), 1))
+    {
+      warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+      return NULL_TREE;
+    }
+
+  /* Get the vector size (in bytes).  */
+  vecsize = tree_low_cst (TREE_VALUE (args), 1);
+
+  /* We need to provide for vector pointers, vector arrays, and
+     functions returning vectors.  For example:
+
+       __attribute__((vector_size(16))) short *foo;
+
+     In this case, the mode is SI, but the type being modified is
+     HI, so we need to look further.  */
+
+  while (POINTER_TYPE_P (type)
+	 || TREE_CODE (type) == FUNCTION_TYPE
+	 || TREE_CODE (type) == ARRAY_TYPE)
+    type = TREE_TYPE (type);
+
+  /* Get the mode of the type being modified.  */
+  orig_mode = TYPE_MODE (type);
+
+  if (TREE_CODE (type) == RECORD_TYPE
+      || (GET_MODE_CLASS (orig_mode) != MODE_FLOAT
+	  && GET_MODE_CLASS (orig_mode) != MODE_INT)
+      || ! host_integerp (TYPE_SIZE_UNIT (type), 1))
+    {
+      error ("invalid vector type for attribute `%s'",
+	     IDENTIFIER_POINTER (name));
+      return NULL_TREE;
+    }
+
+  /* Calculate how many units fit in the vector.  */
+  nunits = vecsize / tree_low_cst (TYPE_SIZE_UNIT (type), 1);
+
+  /* Find a suitably sized vector.  */
+  new_mode = VOIDmode;
+  for (mode = GET_CLASS_NARROWEST_MODE (GET_MODE_CLASS (orig_mode) == MODE_INT
+					? MODE_VECTOR_INT
+					: MODE_VECTOR_FLOAT);
+       mode != VOIDmode;
+       mode = GET_MODE_WIDER_MODE (mode))
+    if (vecsize == GET_MODE_SIZE (mode)
+	&& nunits == (unsigned HOST_WIDE_INT) GET_MODE_NUNITS (mode))
+      {
+	new_mode = mode;
+	break;
+      }
+
+  if (new_mode == VOIDmode)
+    error ("no vector mode with the size and type specified could be found");
+  else
+    {
+      new_type = type_for_mode (new_mode, TREE_UNSIGNED (type));
+      if (!new_type)
+	error ("no vector mode with the size and type specified could be found");
+      else
+	/* Build back pointers if needed.  */
+	*node = vector_size_helper (*node, new_type);
+    }
+    
+  return NULL_TREE;
+}
+
+/* HACK.  GROSS.  This is absolutely disgusting.  I wish there was a
+   better way.
+
+   If we requested a pointer to a vector, build up the pointers that
+   we stripped off while looking for the inner type.  Similarly for
+   return values from functions.
+
+   The argument "type" is the top of the chain, and "bottom" is the
+   new type which we will point to.  */
+
+static tree
+vector_size_helper (type, bottom)
+     tree type, bottom;
+{
+  tree inner, outer;
+
+  if (POINTER_TYPE_P (type))
+    {
+      inner = vector_size_helper (TREE_TYPE (type), bottom);
+      outer = build_pointer_type (inner);
+    }
+  else if (TREE_CODE (type) == ARRAY_TYPE)
+    {
+      inner = vector_size_helper (TREE_TYPE (type), bottom);
+      outer = build_array_type (inner, TYPE_VALUES (type));
+    }
+  else if (TREE_CODE (type) == FUNCTION_TYPE)
+    {
+      inner = vector_size_helper (TREE_TYPE (type), bottom);
+      outer = build_function_type (inner, TYPE_VALUES (type));
+    }
+  else
+    return bottom;
+  
+  TREE_READONLY (outer) = TREE_READONLY (type);
+  TREE_THIS_VOLATILE (outer) = TREE_THIS_VOLATILE (type);
+
+  return outer;
+}
+
+/* Split SPECS_ATTRS, a list of declspecs and prefix attributes, into two
+   lists.  SPECS_ATTRS may also be just a typespec (eg: RECORD_TYPE).
+
+   The head of the declspec list is stored in DECLSPECS.
+   The head of the attribute list is stored in PREFIX_ATTRIBUTES.
+
+   Note that attributes in SPECS_ATTRS are stored in the TREE_PURPOSE of
+   the list elements.  We drop the containing TREE_LIST nodes and link the
+   resulting attributes together the way decl_attributes expects them.  */
+
+void
+split_specs_attrs (specs_attrs, declspecs, prefix_attributes)
+     tree specs_attrs;
+     tree *declspecs, *prefix_attributes;
+{
+  tree t, s, a, next, specs, attrs;
+
+  /* This can happen after an __extension__ in pedantic mode.  */
+  if (specs_attrs != NULL_TREE 
+      && TREE_CODE (specs_attrs) == INTEGER_CST)
+    {
+      *declspecs = NULL_TREE;
+      *prefix_attributes = NULL_TREE;
+      return;
+    }
+
+  /* This can happen in c++ (eg: decl: typespec initdecls ';').  */
+  if (specs_attrs != NULL_TREE
+      && TREE_CODE (specs_attrs) != TREE_LIST)
+    {
+      *declspecs = specs_attrs;
+      *prefix_attributes = NULL_TREE;
+      return;
+    }
+
+  /* Remember to keep the lists in the same order, element-wise.  */
+
+  specs = s = NULL_TREE;
+  attrs = a = NULL_TREE;
+  for (t = specs_attrs; t; t = next)
+    {
+      next = TREE_CHAIN (t);
+      /* Declspecs have a non-NULL TREE_VALUE.  */
+      if (TREE_VALUE (t) != NULL_TREE)
+	{
+	  if (specs == NULL_TREE)
+	    specs = s = t;
+	  else
+	    {
+	      TREE_CHAIN (s) = t;
+	      s = t;
+	    }
+	}
+      /* The TREE_PURPOSE may also be empty in the case of
+	 __attribute__(()).  */
+      else if (TREE_PURPOSE (t) != NULL_TREE)
+	{
+	  if (attrs == NULL_TREE)
+	    attrs = a = TREE_PURPOSE (t);
+	  else
+	    {
+	      TREE_CHAIN (a) = TREE_PURPOSE (t);
+	      a = TREE_PURPOSE (t);
+	    }
+	  /* More attrs can be linked here, move A to the end.  */
+	  while (TREE_CHAIN (a) != NULL_TREE)
+	    a = TREE_CHAIN (a);
+	}
+    }
+
+  /* Terminate the lists.  */
+  if (s != NULL_TREE)
+    TREE_CHAIN (s) = NULL_TREE;
+  if (a != NULL_TREE)
+    TREE_CHAIN (a) = NULL_TREE;
+
+  /* All done.  */
+  *declspecs = specs;
+  *prefix_attributes = attrs;
+}
+
+/* Strip attributes from SPECS_ATTRS, a list of declspecs and attributes.
+   This function is used by the parser when a rule will accept attributes
+   in a particular position, but we don't want to support that just yet.
+
+   A warning is issued for every ignored attribute.  */
+
+tree
+strip_attrs (specs_attrs)
+     tree specs_attrs;
+{
+  tree specs, attrs;
+
+  split_specs_attrs (specs_attrs, &specs, &attrs);
+
+  while (attrs)
+    {
+      warning ("`%s' attribute ignored",
+	       IDENTIFIER_POINTER (TREE_PURPOSE (attrs)));
+      attrs = TREE_CHAIN (attrs);
+    }
+
+  return specs;
+}