obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 56 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/cpp0x/sfinae3.C b/gcc/testsuite/g++.dg/cpp0x/sfinae3.C
new file mode 100644
index 000000000..8582ba777
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/sfinae3.C
@@ -0,0 +1,56 @@
+// { dg-options -std=c++0x }
+
+namespace std { template <class T> T&& declval(); }
+
+template<typename _Tp, typename... _Args>
+  class is_constructible_mini
+  {
+    typedef char __one;
+    typedef struct { char __arr[2]; } __two;
+
+    template<typename _Tp1, typename... _Args1>
+      static decltype(::new _Tp1(std::declval<_Args1>()...), __one())
+      __test(int);
+
+    template<typename, typename...>
+      static __two __test(...);
+
+  public:
+    static const bool value = sizeof(__test<_Tp, _Args...>(0)) == 1;
+  };
+
+/*
+template<typename _Tp>
+  class is_constructible_mini<_Tp>
+  {
+    typedef char __one;
+    typedef struct { char __arr[2]; } __two;
+
+    template<typename _Tp1>
+      static decltype(::new _Tp1, __one()) __test(int);
+
+    template<typename>
+      static __two __test(...);
+
+  public:
+    static const bool value
+    = sizeof(__test<typename std::remove_cv<_Tp>::type>(0)) == 1;
+  };
+*/
+
+struct A
+{
+  A(int);
+};
+
+struct B { };
+
+static_assert( is_constructible_mini<A, int>::value, "");
+static_assert( is_constructible_mini<A, A>::value, "");
+static_assert( !is_constructible_mini<A, int, double>::value, "");
+
+static_assert( !is_constructible_mini<A>::value, "");  // doesn't compile without the
+                                                       // partial specialization
+
+static_assert( is_constructible_mini<B>::value, "");
+static_assert( is_constructible_mini<const B>::value, "");