decl.c (duplicate_decls): Use same_type_p.

	* decl.c (duplicate_decls): Use same_type_p.
	* method.c (try_old_backref): Renamed from flush_repeats.  Use
	same_type_p.  Don't try to handle repeats.  Return success.
	(is_back_referenceable_type): Return 0 if TYPE_FOR_JAVA.  Support
	calls from old-style code, too.
	(check_ktype): Use same_type_p.
	(check_btype): Use same_type_p.  Don't pull out TYPE_MAIN_VARIANT.
	(build_qualified_name): Simplify logic.
	(build_mangled_name_for_type_with_Gcode): Remove call to
	type_canonical_variant.
	(process_overload_item): Strip typedefs and quals at the top.
	(build_mangled_name): Likewise.  Remove support for old-style
	repeats, which have been disabled since 2.7.2.  Don't mess with
	TREE_USED.
	(build_decl_overload_real): Don't mess with TREE_USED.

From-SVN: r25758

gcc/cp/ChangeLog

+1999-03-13  Jason Merrill  <jason@yorick.cygnus.com>
+
+	* decl.c (duplicate_decls): Use same_type_p.
+	* method.c (try_old_backref): Renamed from flush_repeats.  Use
+	same_type_p.  Don't try to handle repeats.  Return success.
+	(is_back_referenceable_type): Return 0 if TYPE_FOR_JAVA.  Support
+	calls from old-style code, too.
+	(check_ktype): Use same_type_p.
+	(check_btype): Use same_type_p.  Don't pull out TYPE_MAIN_VARIANT.
+	(build_qualified_name): Simplify logic.
+	(build_mangled_name_for_type_with_Gcode): Remove call to
+	type_canonical_variant.
+	(process_overload_item): Strip typedefs and quals at the top.
+	(build_mangled_name): Likewise.  Remove support for old-style 
+	repeats, which have been disabled since 2.7.2.  Don't mess with 
+	TREE_USED.
+	(build_decl_overload_real): Don't mess with TREE_USED.
+
 1999-03-13  Nathan Sidwell  <nathan@acm.org>
 
 	* error.c (cp_printers): Add 'F' escape character.

gcc/cp/decl.c

@@ -3242,7 +3242,7 @@ duplicate_decls (newdecl, olddecl)
       TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
 
       /* Lay the type out, unless already done.  */
-      if (newtype != canonical_type_variant (oldtype)
+      if (! same_type_p (newtype, oldtype)
 	  && TREE_TYPE (newdecl) != error_mark_node
 	  && !(processing_template_decl && uses_template_parms (newdecl)))
 	layout_type (TREE_TYPE (newdecl));