Upstream-Status: Inappropriate [Backport]
From 92860ca75ea3cbb7223913d121c60cc56c966794 Mon Sep 17 00:00:00 2001
From: jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 8 Apr 2011 15:02:08 +0000
Subject: [PATCH 088/200] 	PR c++/48452
 	* typeck.c (build_x_compound_expr_from_list): Return error_mark_node
 	in SFINAE context.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@172193 138bc75d-0d04-0410-961f-82ee72b054a4

index 03aa49e..ec9233d 100644
--- a/gcc/cp/typeck.c
+++ b/gcc/cp/typeck.c
@@ -5469,6 +5469,8 @@ build_x_compound_expr_from_list (tree list, expr_list_kind exp,
 	  default:
 	    gcc_unreachable ();
 	  }
+      else
+	return error_mark_node;
 
       for (list = TREE_CHAIN (list); list; list = TREE_CHAIN (list))
 	expr = build_x_compound_expr (expr, TREE_VALUE (list), 
new file mode 100644
index 0000000..ede8b70
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/sfinae10.C
@@ -0,0 +1,18 @@
+// PR c++/48452
+// { dg-options -std=c++0x }
+namespace std {
+  template <class T> T&& declval();
+}
+
+template<class T, class... Args>
+decltype(T(std::declval<Args>()...), char()) f(int);
+
+template<class, class...>
+char (&f(...))[2];
+
+struct A { virtual ~A() = 0; };
+struct B {};
+
+static_assert(sizeof(f<A, int, int>(0)) != 1, "Error"); // a
+static_assert(sizeof(f<B, void, int>(0)) != 1, "Error"); // b
+static_assert(sizeof(f<void, int, int>(0)) != 1, "Error"); // c
-- 
1.7.0.4