From 840fa745ca493123c44d7e9b62676f3a0cd23c0d Mon Sep 17 00:00:00 2001
From: Eric Fiselier <eric@efcs.ca>
Date: Wed, 20 Apr 2016 00:14:32 +0000
Subject: Add 'is_callable' and 'is_nothrow_callable' traits and cleanup
 INVOKE.

The primary purpose of this patch is to add the 'is_callable' traits.
Since 'is_nothrow_callable' required making 'INVOKE' conditionally noexcept
I also took this oppertunity to implement a constexpr version of INVOKE.
This fixes 'std::experimental::apply' which required constexpr 'INVOKE support'.

This patch will be followed up with some cleanup. Primarly removing most
of "__member_function_traits" since it's no longer used by INVOKE (in C++11 at least).

llvm-svn: 266836
---
 .../PR23141_invoke_not_constexpr.pass.cpp          | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/PR23141_invoke_not_constexpr.pass.cpp

(limited to 'libcxx/test/std/utilities/function.objects/bind')

diff --git a/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/PR23141_invoke_not_constexpr.pass.cpp b/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/PR23141_invoke_not_constexpr.pass.cpp
new file mode 100644
index 00000000000..163b2d9afea
--- /dev/null
+++ b/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/PR23141_invoke_not_constexpr.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+// https://llvm.org/bugs/show_bug.cgi?id=23141
+#include <functional>
+#include <type_traits>
+
+struct Fun
+{
+  template<typename T, typename U>
+  void operator()(T && t, U && u) const
+  {
+    static_assert(std::is_same<U, int &>::value, "");
+  }
+};
+
+int main()
+{
+    std::bind(Fun{}, std::placeholders::_1, 42)("hello");
+}
-- 
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