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Fix for PR17606 - result_of (and INVOKE) works incorrectly for member function pointers with ref qualifiers. Also a drive-by fix for common_type in C++03 mode. Thanks to Michel Morin for the bug report and the proposed fix.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@201101 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2014-02-10 17:40:28 +00:00
parent ebfc50ee89
commit 71e699dda5
3 changed files with 71 additions and 3 deletions
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50
test/utilities/function.objects/func.require/invoke.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// [func.require]
// INVOKE
#if __cplusplus < 201103L
int main () {} // no __invoke in C++03
#else
#include <type_traits>
template <typename T, int N>
struct Array
{
typedef T type[N];
};
struct Type
{
Array<char, 1>::type& f1();
Array<char, 2>::type& f2() const;
Array<char, 1>::type& g1() &;
Array<char, 2>::type& g2() const &;
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
Array<char, 3>::type& g3() &&;
Array<char, 4>::type& g4() const &&;
#endif
};
int main()
{
static_assert(sizeof(std::__invoke(&Type::f1, std::declval<Type >())) == 1, "");
static_assert(sizeof(std::__invoke(&Type::f2, std::declval<Type const >())) == 2, "");
static_assert(sizeof(std::__invoke(&Type::g1, std::declval<Type &>())) == 1, "");
static_assert(sizeof(std::__invoke(&Type::g2, std::declval<Type const &>())) == 2, "");
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
static_assert(sizeof(std::__invoke(&Type::g3, std::declval<Type &&>())) == 3, "");
static_assert(sizeof(std::__invoke(&Type::g4, std::declval<Type const&&>())) == 4, "");
#endif
}
#endif