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-rw-r--r--gcc/testsuite/g++.dg/cpp0x/sfinae4.C23
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp0x/sfinae4.C b/gcc/testsuite/g++.dg/cpp0x/sfinae4.C
new file mode 100644
index 000000000..b66483124
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/sfinae4.C
@@ -0,0 +1,23 @@
+// { 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;
+ };
+
+static_assert( !is_constructible_mini<int[], int>::value, "");
+static_assert( !is_constructible_mini<void, int>::value, "");