commit 7cf59ddcccb7809fa17ef1619d44adc85ab8000e
Author: Jason Merrill <jason@redhat.com>
Date:   Mon Aug 9 16:08:59 2010 -0400

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

diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index bb6b1a0..02c54f9 100644
--- a/gcc/cp/pt.c
+++ b/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)
diff --git a/gcc/testsuite/g++.dg/cpp0x/variadic-104.C b/gcc/testsuite/g++.dg/cpp0x/variadic-104.C
new file mode 100644
index 0000000..c693b33
--- /dev/null
+++ b/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;