From abab8b02e8102ab546f97b60acc3644d1f3bba2a Mon Sep 17 00:00:00 2001
From: jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 20 May 2011 19:02:17 +0000
Subject: [PATCH] 	PR c++/48745
 	* pt.c (value_dependent_expr_p): Handle CONSTRUCTOR.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@173972 138bc75d-0d04-0410-961f-82ee72b054a4

index d49fe6b..d9c7ac4 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -18231,6 +18231,16 @@ value_dependent_expression_p (tree expression)
 	 type-dependent.  */
       return type_dependent_expression_p (expression);
 
+    case CONSTRUCTOR:
+      {
+	unsigned ix;
+	tree val;
+	FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (expression), ix, val)
+	  if (value_dependent_expression_p (val))
+	    return true;
+	return false;
+      }
+
     default:
       /* A constant expression is value-dependent if any subexpression is
 	 value-dependent.  */
new file mode 100644
index 0000000..2b9351a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/sfinae22.C
@@ -0,0 +1,23 @@
+// PR c++/48745
+// { dg-options -std=c++0x }
+
+template<class T>
+struct add_rval_ref {
+  typedef T&& type;
+};
+
+template<>
+struct add_rval_ref<void> {
+  typedef void type;
+};
+
+template<class T>
+typename add_rval_ref<T>::type create();
+
+template<class T, class... Args>
+decltype(T{create<Args>()...}, char()) f(int);
+
+template<class, class...>
+char (&f(...))[2];
+
+static_assert(sizeof(f<int, void>(0)) != 1, "Error"); // { dg-bogus "void value" "" { xfail *-*-* } }
-- 
1.7.0.4