re PR c++/45236 ([C++0x] Can't access nested type of a partial class specialization involving variadic parameters)

PR c++/45236
	* pt.c (lookup_template_class): Don't re-coerce outer parms.

From-SVN: r163042

gcc/cp/ChangeLog

@@ -1,3 +1,8 @@
+2010-08-09  Jason Merrill  <jason@redhat.com>
+
+	PR c++/45236
+	* pt.c (lookup_template_class): Don't re-coerce outer parms.
+
 2010-08-09  Nathan Froyd  <froydnj@codesourcery.com>
 
 	* call.c (add_builtin_candidates): Use VECs for local variable

gcc/cp/pt.c

@@ -6540,11 +6540,16 @@ lookup_template_class (tree d1,
 	       i > 0 && t != NULL_TREE;
 	       --i, t = TREE_CHAIN (t))
 	    {
-	      tree a = coerce_template_parms (TREE_VALUE (t),
-					      arglist, gen_tmpl,
-					      complain,
-					      /*require_all_args=*/true,
-					      /*use_default_args=*/true);
+	      tree a;
+	      if (i == saved_depth)
+		a = coerce_template_parms (TREE_VALUE (t),
+					   arglist, gen_tmpl,
+					   complain,
+					   /*require_all_args=*/true,
+					   /*use_default_args=*/true);
+	      else
+		/* Outer levels should have already been coerced.  */
+		a = TMPL_ARGS_LEVEL (arglist, i);
 
 	      /* Don't process further if one of the levels fails.  */
 	      if (a == error_mark_node)

gcc/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2010-08-09  Jason Merrill  <jason@redhat.com>
+
+	PR c++/45236
+	* g++.dg/cpp0x/variadic-104.C: New.
+
 2010-08-09  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/44235

gcc/testsuite/g++.dg/cpp0x/variadic-104.C

@@ -0,0 +1,16 @@
+// PR c++/45236
+// { dg-options -std=c++0x }
+
+template <class T, class S> class foo;
+
+template<template<int...> class C, int... II, class S>
+struct foo<C<II...>,S>
+{
+    template <class U>
+    struct bar { typedef int type; };
+};
+
+template <int... I>
+struct A {};
+
+foo<A<3>, float>::bar<int> x;