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Peter Collingbourne: If a pointer is passed as the third argument of the (iterator,

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iterator, allocator) constructor with the intention of it being
implicitly converted to the allocator type, it is possible for overload
resolution to favour the (iterator, iterator, enable_if) constructor.
Eliminate this possibility by moving the enable_if to one of the
existing arguments and removing the third argument.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@191145 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant
2013-09-21 21:13:54 +00:00
parent dcc6a0bc44
commit de589f2f8f
2 changed files with 26 additions and 10 deletions
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20
include/vector
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@@ -524,12 +524,13 @@ public:
vector(size_type __n, const_reference __x);
vector(size_type __n, const_reference __x, const allocator_type& __a);
template <class _InputIterator>
vector(_InputIterator __first, _InputIterator __last,
vector(_InputIterator __first,
typename enable_if<__is_input_iterator <_InputIterator>::value &&
!__is_forward_iterator<_InputIterator>::value &&
is_constructible<
value_type,
typename iterator_traits<_InputIterator>::reference>::value>::type* = 0);
typename iterator_traits<_InputIterator>::reference>::value,
_InputIterator>::type __last);
template <class _InputIterator>
vector(_InputIterator __first, _InputIterator __last, const allocator_type& __a,
typename enable_if<__is_input_iterator <_InputIterator>::value &&
@@ -538,11 +539,12 @@ public:
value_type,
typename iterator_traits<_InputIterator>::reference>::value>::type* = 0);
template <class _ForwardIterator>
vector(_ForwardIterator __first, _ForwardIterator __last,
vector(_ForwardIterator __first,
typename enable_if<__is_forward_iterator<_ForwardIterator>::value &&
is_constructible<
value_type,
typename iterator_traits<_ForwardIterator>::reference>::value>::type* = 0);
typename iterator_traits<_ForwardIterator>::reference>::value,
_ForwardIterator>::type __last);
template <class _ForwardIterator>
vector(_ForwardIterator __first, _ForwardIterator __last, const allocator_type& __a,
typename enable_if<__is_forward_iterator<_ForwardIterator>::value &&
@@ -1072,12 +1074,13 @@ vector<_Tp, _Allocator>::vector(size_type __n, const_reference __x, const alloca
template <class _Tp, class _Allocator>
template <class _InputIterator>
vector<_Tp, _Allocator>::vector(_InputIterator __first, _InputIterator __last,
vector<_Tp, _Allocator>::vector(_InputIterator __first,
typename enable_if<__is_input_iterator <_InputIterator>::value &&
!__is_forward_iterator<_InputIterator>::value &&
is_constructible<
value_type,
typename iterator_traits<_InputIterator>::reference>::value>::type*)
typename iterator_traits<_InputIterator>::reference>::value,
_InputIterator>::type __last)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
@@ -1105,11 +1108,12 @@ vector<_Tp, _Allocator>::vector(_InputIterator __first, _InputIterator __last, c
template <class _Tp, class _Allocator>
template <class _ForwardIterator>
vector<_Tp, _Allocator>::vector(_ForwardIterator __first, _ForwardIterator __last,
vector<_Tp, _Allocator>::vector(_ForwardIterator __first,
typename enable_if<__is_forward_iterator<_ForwardIterator>::value &&
is_constructible<
value_type,
typename iterator_traits<_ForwardIterator>::reference>::value>::type*)
typename iterator_traits<_ForwardIterator>::reference>::value,
_ForwardIterator>::type __last)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);