PR libstdc++/82522 overload map insert functions for rvalues (LWG 2354)
Backport from mainline 2017-10-13 Jonathan Wakely <jwakely@redhat.com> PR libstdc++/82522 * doc/xml/manual/intro.xml: Document LWG 2354 changes. * include/bits/stl_map.h (map::insert(value_type&&)) (map::insert(const_iterator, value_type&&)): Add overload for rvalues. * include/bits/stl_multimap.h (multimap::insert(value_type&&)) (multimap::insert(const_iterator, value_type&&)): Likewise. * include/bits/unordered_map.h (unordered_map::insert(value_type&&)) (unordered_map::insert(const_iterator, value_type&&)) (unordered_multimap::insert(value_type&&)) (unordered_multimap::insert(const_iterator, value_type&&)): Likewise. * testsuite/23_containers/map/modifiers/insert/dr2354.cc: New test. * testsuite/23_containers/multimap/modifiers/insert/dr2354.cc: New test. * testsuite/23_containers/unordered_map/insert/dr2354.cc: New test. * testsuite/23_containers/unordered_multimap/insert/dr2354.cc: New test. From-SVN: r255330
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@ -1,5 +1,25 @@
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2017-12-01 Jonathan Wakely <jwakely@redhat.com>
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Backport from mainline
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2017-10-13 Jonathan Wakely <jwakely@redhat.com>
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PR libstdc++/82522
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* doc/xml/manual/intro.xml: Document LWG 2354 changes.
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* include/bits/stl_map.h (map::insert(value_type&&))
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(map::insert(const_iterator, value_type&&)): Add overload for rvalues.
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* include/bits/stl_multimap.h (multimap::insert(value_type&&))
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(multimap::insert(const_iterator, value_type&&)): Likewise.
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* include/bits/unordered_map.h (unordered_map::insert(value_type&&))
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(unordered_map::insert(const_iterator, value_type&&))
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(unordered_multimap::insert(value_type&&))
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(unordered_multimap::insert(const_iterator, value_type&&)): Likewise.
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* testsuite/23_containers/map/modifiers/insert/dr2354.cc: New test.
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* testsuite/23_containers/multimap/modifiers/insert/dr2354.cc: New
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test.
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* testsuite/23_containers/unordered_map/insert/dr2354.cc: New test.
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* testsuite/23_containers/unordered_multimap/insert/dr2354.cc: New
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test.
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Backport from mainline
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2017-11-23 Jonathan Wakely <jwakely@redhat.com>
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@ -986,6 +986,12 @@ requirements of the license of GCC.
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<listitem><para>Add deleted constructors.
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</para></listitem></varlistentry>
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<varlistentry><term><link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="&DR;#2354">2332</link>:
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<emphasis>Unnecessary copying when inserting into maps with braced-init syntax</emphasis>
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</term>
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<listitem><para>Add overloads of <code>insert</code> taking <code>value_type&&</code> rvalues.
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</para></listitem></varlistentry>
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<varlistentry><term><link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="&DR;#2399">2399</link>:
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<emphasis><code>shared_ptr</code>'s constructor from <code>unique_ptr</code> should be constrained</emphasis>
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</term>
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@ -777,7 +777,6 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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/**
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* @brief Attempts to insert a std::pair into the %map.
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* @param __x Pair to be inserted (see std::make_pair for easy
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* creation of pairs).
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*
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@ -790,12 +789,19 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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* first element (the key) is not already present in the %map.
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*
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* Insertion requires logarithmic time.
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* @{
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*/
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std::pair<iterator, bool>
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insert(const value_type& __x)
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{ return _M_t._M_insert_unique(__x); }
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#if __cplusplus >= 201103L
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 2354. Unnecessary copying when inserting into maps with braced-init
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std::pair<iterator, bool>
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insert(value_type&& __x)
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{ return _M_t._M_insert_unique(std::move(__x)); }
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template<typename _Pair, typename = typename
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std::enable_if<std::is_constructible<value_type,
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_Pair&&>::value>::type>
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@ -803,6 +809,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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insert(_Pair&& __x)
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{ return _M_t._M_insert_unique(std::forward<_Pair>(__x)); }
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#endif
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// @}
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#if __cplusplus >= 201103L
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/**
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@ -839,6 +846,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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* for more on @a hinting.
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*
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* Insertion requires logarithmic time (if the hint is not taken).
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* @{
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*/
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iterator
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#if __cplusplus >= 201103L
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@ -849,6 +857,12 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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{ return _M_t._M_insert_unique_(__position, __x); }
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#if __cplusplus >= 201103L
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 2354. Unnecessary copying when inserting into maps with braced-init
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iterator
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insert(const_iterator __position, value_type&& __x)
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{ return _M_t._M_insert_unique_(__position, std::move(__x)); }
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template<typename _Pair, typename = typename
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std::enable_if<std::is_constructible<value_type,
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_Pair&&>::value>::type>
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@ -857,6 +871,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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{ return _M_t._M_insert_unique_(__position,
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std::forward<_Pair>(__x)); }
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#endif
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// @}
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/**
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* @brief Template function that attempts to insert a range of elements.
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@ -525,12 +525,19 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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* thus multiple pairs with the same key can be inserted.
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*
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* Insertion requires logarithmic time.
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* @{
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*/
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iterator
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insert(const value_type& __x)
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{ return _M_t._M_insert_equal(__x); }
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#if __cplusplus >= 201103L
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 2354. Unnecessary copying when inserting into maps with braced-init
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iterator
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insert(value_type&& __x)
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{ return _M_t._M_insert_equal(std::move(__x)); }
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template<typename _Pair, typename = typename
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std::enable_if<std::is_constructible<value_type,
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_Pair&&>::value>::type>
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@ -538,6 +545,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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insert(_Pair&& __x)
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{ return _M_t._M_insert_equal(std::forward<_Pair>(__x)); }
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#endif
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// @}
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/**
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* @brief Inserts a std::pair into the %multimap.
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@ -558,6 +566,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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* https://gcc.gnu.org/onlinedocs/libstdc++/manual/associative.html#containers.associative.insert_hints
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*
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* Insertion requires logarithmic time (if the hint is not taken).
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* @{
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*/
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iterator
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#if __cplusplus >= 201103L
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@ -568,6 +577,12 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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{ return _M_t._M_insert_equal_(__position, __x); }
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#if __cplusplus >= 201103L
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 2354. Unnecessary copying when inserting into maps with braced-init
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iterator
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insert(const_iterator __position, value_type&& __x)
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{ return _M_t._M_insert_equal_(__position, std::move(__x)); }
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template<typename _Pair, typename = typename
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std::enable_if<std::is_constructible<value_type,
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_Pair&&>::value>::type>
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{ return _M_t._M_insert_equal_(__position,
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std::forward<_Pair>(__x)); }
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#endif
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// @}
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/**
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* @brief A template function that attempts to insert a range
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@ -578,6 +578,12 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
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insert(const value_type& __x)
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{ return _M_h.insert(__x); }
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 2354. Unnecessary copying when inserting into maps with braced-init
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std::pair<iterator, bool>
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insert(value_type&& __x)
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{ return _M_h.insert(std::move(__x)); }
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template<typename _Pair, typename = typename
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std::enable_if<std::is_constructible<value_type,
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_Pair&&>::value>::type>
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insert(const_iterator __hint, const value_type& __x)
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{ return _M_h.insert(__hint, __x); }
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 2354. Unnecessary copying when inserting into maps with braced-init
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iterator
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insert(const_iterator __hint, value_type&& __x)
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{ return _M_h.insert(__hint, std::move(__x)); }
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template<typename _Pair, typename = typename
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std::enable_if<std::is_constructible<value_type,
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_Pair&&>::value>::type>
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insert(const value_type& __x)
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{ return _M_h.insert(__x); }
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iterator
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insert(value_type&& __x)
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{ return _M_h.insert(std::move(__x)); }
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template<typename _Pair, typename = typename
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std::enable_if<std::is_constructible<value_type,
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_Pair&&>::value>::type>
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insert(const_iterator __hint, const value_type& __x)
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{ return _M_h.insert(__hint, __x); }
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 2354. Unnecessary copying when inserting into maps with braced-init
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iterator
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insert(const_iterator __hint, value_type&& __x)
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{ return _M_h.insert(__hint, std::move(__x)); }
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template<typename _Pair, typename = typename
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std::enable_if<std::is_constructible<value_type,
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_Pair&&>::value>::type>
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@ -0,0 +1,32 @@
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// Copyright (C) 2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do compile { target c++11 } }
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#include <map>
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struct MoveOnly {
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MoveOnly(int) { }
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MoveOnly(MoveOnly&&) = default;
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};
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void
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test01()
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{
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std::map<int, MoveOnly> m;
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m.insert({1, 2}); // PR libstdc++/82522 - LWG 2354
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}
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// Copyright (C) 2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do compile { target c++11 } }
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#include <map>
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struct MoveOnly {
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MoveOnly(int) { }
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MoveOnly(MoveOnly&&) = default;
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};
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void
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test01()
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{
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std::multimap<int, MoveOnly> m;
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m.insert({1, 2}); // PR libstdc++/82522 - LWG 2354
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}
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// Copyright (C) 2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do compile { target c++11 } }
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#include <unordered_map>
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struct MoveOnly {
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MoveOnly(int) { }
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MoveOnly(MoveOnly&&) = default;
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};
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void
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test01()
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{
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std::unordered_map<int, MoveOnly> m;
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m.insert({1, 2}); // PR libstdc++/82522 - LWG 2354
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}
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// Copyright (C) 2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do compile { target c++11 } }
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#include <unordered_map>
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struct MoveOnly {
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MoveOnly(int) { }
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MoveOnly(MoveOnly&&) = default;
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};
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void
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test01()
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{
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std::unordered_multimap<int, MoveOnly> m;
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m.insert({1, 2}); // PR libstdc++/82522 - LWG 2354
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}
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