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PR78991 make __gnu_cxx::__ops constructors explicit

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PR libstdc++/78991
	* include/bits/predefined_ops.h (_Iter_comp_iter, _Iter_comp_val)
	(_Val_comp_iter, _Iter_equals_val, _Iter_pred, _Iter_comp_to_val)
	(_Iter_comp_to_iter, _Iter_negate): Make constructors explicit and
	move function objects.
	(__iter_comp_iter, __iter_comp_val, __val_comp_iter, __pred_iter)
	(__iter_comp_val, __iter_comp_iter, __negate): Move function objects.
	* testsuite/25_algorithms/sort/78991.cc: New test.

From-SVN: r244150
This commit is contained in:
Jonathan Wakely
2017-01-06 12:33:58 +00:00
committed by Jonathan Wakely
parent 88456bc19d
commit 6807f08628
3 changed files with 85 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
libstdc++-v3/ChangeLog
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@@ -1,3 +1,14 @@
2017-01-06 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/78991
* include/bits/predefined_ops.h (_Iter_comp_iter, _Iter_comp_val)
(_Val_comp_iter, _Iter_equals_val, _Iter_pred, _Iter_comp_to_val)
(_Iter_comp_to_iter, _Iter_negate): Make constructors explicit and
move function objects.
(__iter_comp_iter, __iter_comp_val, __val_comp_iter, __pred_iter)
(__iter_comp_val, __iter_comp_iter, __negate): Move function objects.
* testsuite/25_algorithms/sort/78991.cc: New test.
2017-01-05 Jonathan Wakely <jwakely@redhat.com>
* include/bits/std_function.h (function::_Signature_type): Remove.

55
libstdc++-v3/include/bits/predefined_ops.h
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@@ -42,6 +42,7 @@ namespace __ops
operator()(_Iterator1 __it1, _Iterator2 __it2) const
{ return *__it1 < *__it2; }
};
_GLIBCXX14_CONSTEXPR
inline _Iter_less_iter
__iter_less_iter()
@@ -53,7 +54,7 @@ namespace __ops
bool
operator()(_Iterator __it, _Value& __val) const
{ return *__it < __val; }
};
};
inline _Iter_less_val
__iter_less_val()
@@ -69,7 +70,7 @@ namespace __ops
bool
operator()(_Value& __val, _Iterator __it) const
{ return __val < *__it; }
};
};
inline _Val_less_iter
__val_less_iter()
@@ -85,7 +86,7 @@ namespace __ops
bool
operator()(_Iterator1 __it1, _Iterator2 __it2) const
{ return *__it1 == *__it2; }
};
};
inline _Iter_equal_to_iter
__iter_equal_to_iter()
@@ -97,7 +98,7 @@ namespace __ops
bool
operator()(_Iterator __it, _Value& __val) const
{ return *__it == __val; }
};
};
inline _Iter_equal_to_val
__iter_equal_to_val()
@@ -111,9 +112,10 @@ namespace __ops
struct _Iter_comp_iter
{
_Compare _M_comp;
_GLIBCXX14_CONSTEXPR
explicit _GLIBCXX14_CONSTEXPR
_Iter_comp_iter(_Compare __comp)
: _M_comp(__comp)
: _M_comp(_GLIBCXX_MOVE(__comp))
{ }
template<typename _Iterator1, typename _Iterator2>
@@ -127,15 +129,16 @@ namespace __ops
_GLIBCXX14_CONSTEXPR
inline _Iter_comp_iter<_Compare>
__iter_comp_iter(_Compare __comp)
{ return _Iter_comp_iter<_Compare>(__comp); }
{ return _Iter_comp_iter<_Compare>(_GLIBCXX_MOVE(__comp)); }
template<typename _Compare>
struct _Iter_comp_val
{
_Compare _M_comp;
explicit
_Iter_comp_val(_Compare __comp)
: _M_comp(__comp)
: _M_comp(_GLIBCXX_MOVE(__comp))
{ }
template<typename _Iterator, typename _Value>
@@ -147,20 +150,21 @@ namespace __ops
template<typename _Compare>
inline _Iter_comp_val<_Compare>
__iter_comp_val(_Compare __comp)
{ return _Iter_comp_val<_Compare>(__comp); }
{ return _Iter_comp_val<_Compare>(_GLIBCXX_MOVE(__comp)); }
template<typename _Compare>
inline _Iter_comp_val<_Compare>
__iter_comp_val(_Iter_comp_iter<_Compare> __comp)
{ return _Iter_comp_val<_Compare>(__comp._M_comp); }
{ return _Iter_comp_val<_Compare>(_GLIBCXX_MOVE(__comp._M_comp)); }
template<typename _Compare>
struct _Val_comp_iter
{
_Compare _M_comp;
explicit
_Val_comp_iter(_Compare __comp)
: _M_comp(__comp)
: _M_comp(_GLIBCXX_MOVE(__comp))
{ }
template<typename _Value, typename _Iterator>
@@ -172,18 +176,19 @@ namespace __ops
template<typename _Compare>
inline _Val_comp_iter<_Compare>
__val_comp_iter(_Compare __comp)
{ return _Val_comp_iter<_Compare>(__comp); }
{ return _Val_comp_iter<_Compare>(_GLIBCXX_MOVE(__comp)); }
template<typename _Compare>
inline _Val_comp_iter<_Compare>
__val_comp_iter(_Iter_comp_iter<_Compare> __comp)
{ return _Val_comp_iter<_Compare>(__comp._M_comp); }
{ return _Val_comp_iter<_Compare>(_GLIBCXX_MOVE(__comp._M_comp)); }
template<typename _Value>
struct _Iter_equals_val
{
_Value& _M_value;
explicit
_Iter_equals_val(_Value& __value)
: _M_value(__value)
{ }
@@ -204,6 +209,7 @@ namespace __ops
{
typename std::iterator_traits<_Iterator1>::reference _M_ref;
explicit
_Iter_equals_iter(_Iterator1 __it1)
: _M_ref(*__it1)
{ }
@@ -224,8 +230,9 @@ namespace __ops
{
_Predicate _M_pred;
explicit
_Iter_pred(_Predicate __pred)
: _M_pred(__pred)
: _M_pred(_GLIBCXX_MOVE(__pred))
{ }
template<typename _Iterator>
@@ -237,7 +244,7 @@ namespace __ops
template<typename _Predicate>
inline _Iter_pred<_Predicate>
__pred_iter(_Predicate __pred)
{ return _Iter_pred<_Predicate>(__pred); }
{ return _Iter_pred<_Predicate>(_GLIBCXX_MOVE(__pred)); }
template<typename _Compare, typename _Value>
struct _Iter_comp_to_val
@@ -246,7 +253,7 @@ namespace __ops
_Value& _M_value;
_Iter_comp_to_val(_Compare __comp, _Value& __value)
: _M_comp(__comp), _M_value(__value)
: _M_comp(_GLIBCXX_MOVE(__comp)), _M_value(__value)
{ }
template<typename _Iterator>
@@ -258,7 +265,9 @@ namespace __ops
template<typename _Compare, typename _Value>
_Iter_comp_to_val<_Compare, _Value>
__iter_comp_val(_Compare __comp, _Value &__val)
{ return _Iter_comp_to_val<_Compare, _Value>(__comp, __val); }
{
return _Iter_comp_to_val<_Compare, _Value>(_GLIBCXX_MOVE(__comp), __val);
}
template<typename _Compare, typename _Iterator1>
struct _Iter_comp_to_iter
@@ -267,7 +276,7 @@ namespace __ops
typename std::iterator_traits<_Iterator1>::reference _M_ref;
_Iter_comp_to_iter(_Compare __comp, _Iterator1 __it1)
: _M_comp(__comp), _M_ref(*__it1)
: _M_comp(_GLIBCXX_MOVE(__comp)), _M_ref(*__it1)
{ }
template<typename _Iterator2>
@@ -279,15 +288,19 @@ namespace __ops
template<typename _Compare, typename _Iterator>
inline _Iter_comp_to_iter<_Compare, _Iterator>
__iter_comp_iter(_Iter_comp_iter<_Compare> __comp, _Iterator __it)
{ return _Iter_comp_to_iter<_Compare, _Iterator>(__comp._M_comp, __it); }
{
return _Iter_comp_to_iter<_Compare, _Iterator>(
_GLIBCXX_MOVE(__comp._M_comp), __it);
}
template<typename _Predicate>
struct _Iter_negate
{
_Predicate _M_pred;
explicit
_Iter_negate(_Predicate __pred)
: _M_pred(__pred)
: _M_pred(_GLIBCXX_MOVE(__pred))
{ }
template<typename _Iterator>
@@ -299,7 +312,7 @@ namespace __ops
template<typename _Predicate>
inline _Iter_negate<_Predicate>
__negate(_Iter_pred<_Predicate> __pred)
{ return _Iter_negate<_Predicate>(__pred._M_pred); }
{ return _Iter_negate<_Predicate>(_GLIBCXX_MOVE(__pred._M_pred)); }
} // namespace __ops
} // namespace __gnu_cxx

40
libstdc++-v3/testsuite/25_algorithms/sort/78991.cc Normal file
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@@ -0,0 +1,40 @@
// Copyright (C) 2017 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/>.
// { dg-do compile { target c++14 } }
// PR 78991
// This failed to compile with Clang because the result_of expression causes
// instantiation of _Iter_comp_iter::operator() outside the immediate context.
#include <algorithm>
struct function
{
function() = default;
template<typename F, typename = std::result_of_t<F&(int, int)>>
function(F) { }
bool operator()(int x, int y) const { return x < y; }
};
int main()
{
int a[2]{ 2, 1 };
std::sort(a, a+2, function{});
}