Simple programs like the following do not compile under -std=c++0x on GCC 4.5.0
- due to the new GCC enforcement of C++0x rules regarding l-values not being
allowed to bind to "&&".
#include <iostream>
#include <math.h>
int main(int argc, char** argv)
{
std::pair< std::string, std::string > x("hello", "world");
std::pair< std::string, std::string > y("test", "123");
std::swap(x, y);
std::cout << x.first << ' ' << x.second << std::endl;
return 0;
}
Compiler output:
In function void std::swap(std::pair<_T1, _T2>&, std::pair<_T1, _T2>&) [with
_T1 = std::basic_string<char>, _T2 = std::basic_string<char>]:
error: cannot bind std::pair<std::basic_string<char>, std::basic_string<char>
> lvalue to std::pair<std::basic_string<char>, std::basic_string<char> >&&
error: initializing argument 1 of void std::pair<_T1,
_T2>::swap(std::pair<_T1, _T2>&&) [with _T1 = std::basic_string<char>, _T2 =
std::basic_string<char>, std::pair<_T1, _T2> =
std::pair<std::basic_string<char>, std::basic_string<char> >]
Likely related to bug# 43785
--
Summary: [C++0x] std::swap not working
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: navin dot kumar at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43917
