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type_traits (result_of): Fix handling of cv-quals.

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* include/std/type_traits (result_of): Fix handling of cv-quals.
	* testsuite/20_util/result_of/1.cc: New.
	* testsuite/20_util/result_of/2.cc: New.
	* testsuite/20_util/declval/requirements/1_neg.cc: Adjust dg-error
	line numbers.
	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
	Likewise.
	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
	Likewise.

From-SVN: r185845
This commit is contained in:
Jonathan Wakely 2012-03-27 09:03:10 +00:00 • committed by Jonathan Wakely
parent 4e578696de
commit c4db9a775b
7 changed files with 127 additions and 19 deletions
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12
libstdc++-v3/ChangeLog
View file

@ -1,3 +1,15 @@
2012-03-27 Jonathan Wakely <jwakely.gcc@gmail.com>
* include/std/type_traits (result_of): Fix handling of cv-quals.
* testsuite/20_util/result_of/1.cc: New.
* testsuite/20_util/result_of/2.cc: New.
* testsuite/20_util/declval/requirements/1_neg.cc: Adjust dg-error
line numbers.
* testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
Likewise.
* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
Likewise.
2012-03-23 David S. Miller <davem@davemloft.net>
* config/abi/post/sparc-linux-gnu/baseline_symbols.txt: Update.

24
libstdc++-v3/include/std/type_traits
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@ -1,6 +1,7 @@
// C++11 type_traits -*- C++ -*-
// Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@ -1793,6 +1794,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _Tp>
static _Tp _S_get(const _Class&);
template<typename _Tp>
static _Tp _S_get(const volatile _Class&);
template<typename _Tp>
static decltype(*std::declval<_Tp>()) _S_get(...);
@ -1813,6 +1816,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _Tp>
static _Tp _S_get(const _Class&);
template<typename _Tp>
static _Tp _S_get(const volatile _Class&);
template<typename _Tp>
static decltype(*std::declval<_Tp>()) _S_get(...);
@ -1836,22 +1841,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _MemPtr, typename _Arg>
struct _Result_of_impl<true, false, _MemPtr, _Arg>
: _Result_of_memobj<typename remove_reference<_MemPtr>::type, _Arg>
{
typedef typename _Result_of_memobj<
typename remove_reference<_MemPtr>::type, _Arg>::__type
__type;
};
: _Result_of_memobj<typename decay<_MemPtr>::type, _Arg>
{ };
template<typename _MemPtr, typename _Arg, typename... _ArgTypes>
struct _Result_of_impl<false, true, _MemPtr, _Arg, _ArgTypes...>
: _Result_of_memfun<typename remove_reference<_MemPtr>::type, _Arg,
_ArgTypes...>
{
typedef typename _Result_of_memfun<
typename remove_reference<_MemPtr>::type, _Arg, _ArgTypes...>::__type
__type;
};
: _Result_of_memfun<typename decay<_MemPtr>::type, _Arg, _ArgTypes...>
{ };
template<typename _Functor, typename... _ArgTypes>
struct result_of<_Functor(_ArgTypes...)>

2
libstdc++-v3/testsuite/20_util/declval/requirements/1_neg.cc
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@ -19,7 +19,7 @@
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-error "static assertion failed" "" { target *-*-* } 1776 }
// { dg-error "static assertion failed" "" { target *-*-* } 1777 }
#include <utility>

4
libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc
View file

@ -48,5 +48,5 @@ void test01()
// { dg-error "required from here" "" { target *-*-* } 40 }
// { dg-error "required from here" "" { target *-*-* } 42 }
// { dg-error "invalid use of incomplete type" "" { target *-*-* } 1565 }
// { dg-error "declaration of" "" { target *-*-* } 1529 }
// { dg-error "invalid use of incomplete type" "" { target *-*-* } 1566 }
// { dg-error "declaration of" "" { target *-*-* } 1530 }

4
libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc
View file

@ -48,5 +48,5 @@ void test01()
// { dg-error "required from here" "" { target *-*-* } 40 }
// { dg-error "required from here" "" { target *-*-* } 42 }
// { dg-error "invalid use of incomplete type" "" { target *-*-* } 1483 }
// { dg-error "declaration of" "" { target *-*-* } 1447 }
// { dg-error "invalid use of incomplete type" "" { target *-*-* } 1484 }
// { dg-error "declaration of" "" { target *-*-* } 1448 }

53
libstdc++-v3/testsuite/20_util/result_of/1.cc Normal file
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@ -0,0 +1,53 @@
// { dg-options "-std=gnu++0x" }
// { dg-do compile }
// Copyright (C) 2012 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <functional>
#include <type_traits>
struct X {
int i;
void f1() { }
void f2() volatile { }
};
typedef int X::*pm;
typedef void (X::*pmf1)();
typedef void (X::*pmf2)() volatile;
typedef std::result_of<pm const&(X&)>::type result;
static_assert(std::is_same<result, int&>::value,
"invoking cv-qualified pointer-to-member-object");
typedef std::result_of<pmf1 const&(X&)>::type result1;
static_assert(std::is_void<result1>::value,
"invoking cv-qualified pointer-to-member-function");
typedef std::result_of<pmf2 const&(X&)>::type result2;
static_assert(std::is_void<result2>::value,
"invoking cv-qualified pointer-to-member-function");
typedef std::result_of<pm(volatile X&)>::type result3;
static_assert(std::is_same<result3, volatile int&>::value,
"invoking pointer-to-member-object on volatile object");
typedef std::result_of<pmf2(volatile X&)>::type result4;
static_assert(std::is_void<result4>::value,
"invoking pointer-to-member-function on volatile object");

47
libstdc++-v3/testsuite/20_util/result_of/2.cc Normal file
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@ -0,0 +1,47 @@
// { dg-options "-std=gnu++0x" }
// { dg-do compile }
// Copyright (C) 2012 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <type_traits>
#include <memory>
using std::is_same;
using std::result_of;
using std::unique_ptr;
// Taken from example in [meta.trans.other]
typedef bool (&PF1)();
typedef short (*PF2)(long);
struct S {
operator PF2() const;
double operator()(char, int&);
void fn(long) const;
char data;
};
typedef void (S::*PMF)(long) const;
typedef char S::*PMD;
static_assert( is_same<result_of<S(int)>::type, short>::value, "!");
static_assert( is_same<result_of<S&(unsigned char, int&)>::type, double>::value, "!");
static_assert( is_same<result_of<PF1()>::type, bool>::value, "!");
static_assert( is_same<result_of<PMF(unique_ptr<S>, int)>::type, void>::value, "!");
static_assert( is_same<result_of<PMD(S)>::type, char&&>::value, "!");
static_assert( is_same<result_of<PMD(const S*)>::type, const char&>::value, "!");