c++ - boost move 编译错误

Question

我试图在类主体之外实现 move 构造函数，但它无法正确编译

#include <boost/move/move.hpp>

class Test
{
    BOOST_COPYABLE_AND_MOVABLE(Test)
public:
    Test() {}
    Test(const Test & other) { }
    Test(BOOST_RV_REF(Test) other);
    Test & operator=(BOOST_COPY_ASSIGN_REF(Test) other) { return *this; } 
    Test & operator=(BOOST_RV_REF(Test) other) { return *this; }
};

Test::Test(BOOST_RV_REF(Test) other) { }

这段代码是我用g++编译的，我的g++版本是4.4.7

$ g++ -c test.cpp
test.cpp:15: error: prototype for 'Test::Test(boost::rv<Test>&)' does not match any in class 'Test'
test.cpp:9: error: candidates are: Test::Test(boost:rv<Test>&)
test.cpp:8: error:                 Test::Test(const Test&)
test.cpp:7: error:                 Test::Test()

Answer 1

It also failed with g++ 5.4.0 – flyzero

必须是您的升级版本。

它适用于 g++ 5.4.1 和 Boost 1.64。如果不是，请检查预处理器输出是否有任何包含/宏错误。