使用C++时的clang ++错误消息0x:调用已删除的构造函数

Question

您好我已将我的Xcode升级到版本4.2并将++升级到版本:

Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn) 
Target: x86_64-apple-darwin11.2.0
Thread model: posix

当尝试使用clang -std = c ++ 0x编译以下代码时

#include <memory>
#include <limits>
#include <boost/shared_ptr.hpp>


class ilpConstraintImpl {
public:
    virtual ~ilpConstraintImpl() {}
};


class ilpConstraint {
public:
    ilpConstraint(ilpConstraintImpl* implptr):impl(implptr) { }
public:
    boost::shared_ptr<ilpConstraintImpl> impl;
};

class ilpExprImpl {
public:
    virtual ilpConstraint operator<= (const double rs)=0;
    virtual ~ilpExprImpl() {}
};



class ilpExpr {
 public:
    virtual ~ilpExpr() {};
    ilpConstraint operator<= (const double rs) { return impl->operator<=(rs); }
    ilpExpr(ilpExprImpl* implptr):impl(implptr) { }
    boost::shared_ptr<ilpExprImpl> impl;
};

我收到以下错误:

./test.h:46:54: error: call to deleted constructor of 'ilpConstraint'
    ilpConstraint operator<= (const double rs) { return impl->operator<=(rs); }
                                                        ^~~~~~~~~~~~~~~~~~~~
./test.h:28:7: note: function has been explicitly marked deleted here
class ilpConstraint {
      ^
1 error generated.

不使用-std = c ++ 0x进行编译.

Answer 1

这看起来像是一个铿锵的错误.我正在使用后来没有这种行为的clang版本.您可以尝试ilpConstraint将显式复制构造函数作为临时解决方法.