मैंने एक गैर-प्रतिलिपि बनाने योग्य मानचित्र बनाया है जिसे मैं क्लैंग के साथ संकलित नहीं कर सकता। चूंकि क्लैंग बहुत मानक मानने के लिए है, इसलिए मैं सोच रहा था कि मेरा कोड कानूनी था या नहीं। एमएसवीएस 2010 और जीसीसी 4.7 चेतावनियों या त्रुटियों के बिना इस कोड को संकलित करें।क्या यह गैर-कॉपी करने योग्य मानचित्र कानूनी C++ 11 है? जीसीसी 4.7 और एमएसवीएस 2010 इसे अनुमति देते हैं। Clang 3.1
पूर्ण कोड संलग्न है: समस्याग्रस्त रेखा main
की अंतिम पंक्ति है।
= delete
#include <utility>
#include <iostream>
#include <map>
template<typename Key_t, typename Value_t, typename Compare_t = std::less<Key_t> >
class non_copyable_map : public std::map<Key_t,Value_t,Compare_t>
{
typedef std::map<Key_t,Value_t,Compare_t> BaseType;
public:
non_copyable_map() { }
non_copyable_map(non_copyable_map&& t) : BaseType(std::move(t)) {}
non_copyable_map& operator = (non_copyable_map&& t)
{
if (this != &t)
{
std::swap<BaseType>(*this,t);
}
return *this;
}
private:
non_copyable_map(const non_copyable_map&) = delete;
non_copyable_map& operator = (const non_copyable_map&) = delete;
};
int main(int argc, char* argv[])
{
non_copyable_map<int, non_copyable_map<int, int> > nestedMap;
non_copyable_map<int,int> inner;
inner[3]=4;
nestedMap[2] = std::move(inner); // THIS LINE CAUSES CLANG PROBLEMS
}
जब clang++-mp-3.1 -std=c++0x -stdlib=libc++ MapOfMaps.cpp
का उपयोग कर MSVS 2010
In file included from MapOfMaps.cpp:2:
In file included from /usr/include/c++/v1/iostream:40:
In file included from /usr/include/c++/v1/istream:156:
In file included from /usr/include/c++/v1/ostream:134:
In file included from /usr/include/c++/v1/bitset:118:
/usr/include/c++/v1/__bit_reference:26:26: error: no type named '__storage_type' in
'std::__1::map<int, int, std::__1::less<int>, std::__1::allocator<std::__1::pair<const
int, int> > >'
typedef typename _C::__storage_type __storage_type;
~~~~~~~~~~~~~^~~~~~~~~~~~~~
MapOfMaps.cpp:21:25: note: in instantiation of template class
'std::__1::__bit_reference<std::__1::map<int, int, std::__1::less<int>,
std::__1::allocator<std::__1::pair<const int, int> > > >' requested here
std::swap<BaseType>(*this,t);
^
MapOfMaps.cpp:36:15: note: in instantiation of member function 'non_copyable_map<int, int,
std::__1::less<int> >::operator=' requested here
nestedMap[2] = std::move(inner);
^
In file included from MapOfMaps.cpp:2:
In file included from /usr/include/c++/v1/iostream:40:
In file included from /usr/include/c++/v1/istream:156:
In file included from /usr/include/c++/v1/ostream:134:
In file included from /usr/include/c++/v1/bitset:118:
/usr/include/c++/v1/__bit_reference:27:26: error: no type named '__storage_pointer' in
'std::__1::map<int, int, std::__1::less<int>, std::__1::allocator<std::__1::pair<const
int, int> > >'
typedef typename _C::__storage_pointer __storage_pointer;
~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
/usr/include/c++/v1/__bit_reference:33:25: error: no type named '__self' in
'std::__1::map<int, int, std::__1::less<int>, std::__1::allocator<std::__1::pair<const
int, int> > >'
friend typename _C::__self;
~~~~~~~~~~~~~^~~~~~
In file included from MapOfMaps.cpp:3:
In file included from /usr/include/c++/v1/map:338:
/usr/include/c++/v1/__tree:1291:14: error: overload resolution selected deleted operator '='
__pair3_ = _STD::move(__t.__pair3_);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/v1/__tree:1308:9: note: in instantiation of member function
'std::__1::__tree<std::__1::pair<int, int>, std::__1::__map_value_compare<int, int,
std::__1::less<int>, true>, std::__1::allocator<std::__1::pair<int, int> >
>::__move_assign' requested here
__move_assign(__t, true_type());
^
/usr/include/c++/v1/__tree:1353:5: note: in instantiation of member function
'std::__1::__tree<std::__1::pair<int, int>, std::__1::__map_value_compare<int, int,
std::__1::less<int>, true>, std::__1::allocator<std::__1::pair<int, int> >
>::__move_assign' requested here
__move_assign(__t, integral_constant<bool,
^
/usr/include/c++/v1/map:736:21: note: in instantiation of member function
'std::__1::__tree<std::__1::pair<int, int>, std::__1::__map_value_compare<int, int,
std::__1::less<int>, true>, std::__1::allocator<std::__1::pair<int, int> > >::operator='
requested here
__tree_ = _STD::move(__m.__tree_);
^
/usr/include/c++/v1/type_traits:2342:9: note: in instantiation of member function
'std::__1::map<int, int, std::__1::less<int>, std::__1::allocator<std::__1::pair<const
int, int> > >::operator=' requested here
__x = _STD::move(__y);
^
MapOfMaps.cpp:21:5: note: in instantiation of function template specialization
'std::__1::swap<std::__1::map<int, int, std::__1::less<int>,
std::__1::allocator<std::__1::pair<const int, int> > > >' requested here
std::swap<BaseType>(*this,t);
^
MapOfMaps.cpp:36:15: note: in instantiation of member function 'non_copyable_map<int, int,
std::__1::less<int> >::operator=' requested here
nestedMap[2] = std::move(inner);
^
/usr/include/c++/v1/memory:1918:7: note: candidate function (the implicit copy assignment
operator) has been explicitly deleted
class __compressed_pair
^
4 errors generated.
आपको कौन सा विशिष्ट त्रुटि संदेश मिल रहा है? – templatetypedef
मैंने प्रारंभिक पोस्ट – jbcoe