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[lto] cp/call.c: Stop using TREE_CHAIN for TYPE_ARG_TYPES. (Part 1)


Hi,

Attached is a patch to stop using TREE_CHAIN on TYPE_ARG_TYPES.

Tested on x86_64-pc-linux-gnu on top of

  http://gcc.gnu.org/ml/gcc-patches/2006-06/msg00958.html
  http://gcc.gnu.org/ml/gcc-patches/2006-06/msg00987.html

OK to apply to the LTO branch?

Kazu Hirata

2006-06-19  Kazu Hirata  <kazu@codesourcery.com>

	* cp/call.c (add_template_candidate_real): Stop using
	TREE_CHAIN on TYPE_ARG_TYPES.

Index: cp/call.c
===================================================================
--- cp/call.c	(revision 114740)
+++ cp/call.c	(working copy)
@@ -2248,9 +2260,11 @@ add_template_candidate_real (struct z_ca
      have that form.  */
   if (DECL_CONSTRUCTOR_P (fn) && list_length (arglist) == 2)
     {
-      tree arg_types = FUNCTION_FIRST_USER_PARMTYPE (fn);
-      if (arg_types && same_type_p (TYPE_MAIN_VARIANT (TREE_VALUE (arg_types)),
-				    ctype))
+      tree arg_types = TYPE_ARG_TYPES (TREE_TYPE (fn));
+      int skip = num_artificial_parms_for (fn);
+      if (skip < num_parm_types (arg_types)
+	  && same_type_p (TYPE_MAIN_VARIANT (nth_parm_type (arg_types, skip)),
+			  ctype))
 	return NULL;
     }
 


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