C++11 travis仅构建失败：使用删除的函数‘；标准：：唯一性\u ptr<_Tp，_Dp>；：：唯一的ptr（常数标准：：唯一的ptr<；\u Tp，\u Dp>；）

代码在本地编译时没有问题（ubuntu 19.04，gcc-8.3.0），但在travis构建期间失败（ubuntu 18，gcc-8.3.0）

错误

In file included from /usr/include/c++/7/memory:64:0,
                 from ./src/Game.hpp:5,
                 from ./src/main.cpp:3:
/usr/include/c++/7/bits/stl_construct.h: In instantiation of ‘void std::_Construct(_T1*, _Args&& ...) [with _T1 = std::unique_ptr<Cell>; _Args = {const std::unique_ptr<Cell, std::default_delete<Cell> >&}]’:
/usr/include/c++/7/bits/stl_uninitialized.h:83:18:   required from ‘static _ForwardIterator std::__uninitialized_copy<_TrivialValueTypes>::__uninit_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = __gnu_cxx::__normal_iterator<const std::unique_ptr<Cell>*, std::vector<std::unique_ptr<Cell> > >; _ForwardIterator = std::unique_ptr<Cell>*; bool _TrivialValueTypes = false]’
/usr/include/c++/7/bits/stl_uninitialized.h:134:15:   required from ‘_ForwardIterator std::uninitialized_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = __gnu_cxx::__normal_iterator<const std::unique_ptr<Cell>*, std::vector<std::unique_ptr<Cell> > >; _ForwardIterator = std::unique_ptr<Cell>*]’
/usr/include/c++/7/bits/stl_uninitialized.h:289:37:   required from ‘_ForwardIterator std::__uninitialized_copy_a(_InputIterator, _InputIterator, _ForwardIterator, std::allocator<_Tp>&) [with _InputIterator = __gnu_cxx::__normal_iterator<const std::unique_ptr<Cell>*, std::vector<std::unique_ptr<Cell> > >; _ForwardIterator = std::unique_ptr<Cell>*; _Tp = std::unique_ptr<Cell>]’
/usr/include/c++/7/bits/stl_vector.h:331:31:   required from ‘std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&) [with _Tp = std::unique_ptr<Cell>; _Alloc = std::allocator<std::unique_ptr<Cell> >]’
/usr/include/c++/7/bits/stl_construct.h:75:7:   required from ‘void std::_Construct(_T1*, _Args&& ...) [with _T1 = std::vector<std::unique_ptr<Cell> >; _Args = {const std::vector<std::unique_ptr<Cell, std::default_delete<Cell> >, std::allocator<std::unique_ptr<Cell, std::default_delete<Cell> > > >&}]’
/usr/include/c++/7/bits/stl_uninitialized.h:83:18:   required from ‘static _ForwardIterator std::__uninitialized_copy<_TrivialValueTypes>::__uninit_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = __gnu_cxx::__normal_iterator<const std::vector<std::unique_ptr<Cell> >*, std::vector<std::vector<std::unique_ptr<Cell> > > >; _ForwardIterator = std::vector<std::unique_ptr<Cell> >*; bool _TrivialValueTypes = false]’
/usr/include/c++/7/bits/stl_uninitialized.h:134:15:   required from ‘_ForwardIterator std::uninitialized_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = __gnu_cxx::__normal_iterator<const std::vector<std::unique_ptr<Cell> >*, std::vector<std::vector<std::unique_ptr<Cell> > > >; _ForwardIterator = std::vector<std::unique_ptr<Cell> >*]’
/usr/include/c++/7/bits/stl_uninitialized.h:289:37:   required from ‘_ForwardIterator std::__uninitialized_copy_a(_InputIterator, _InputIterator, _ForwardIterator, std::allocator<_Tp>&) [with _InputIterator = __gnu_cxx::__normal_iterator<const std::vector<std::unique_ptr<Cell> >*, std::vector<std::vector<std::unique_ptr<Cell> > > >; _ForwardIterator = std::vector<std::unique_ptr<Cell> >*; _Tp = std::vector<std::unique_ptr<Cell> >]’
/usr/include/c++/7/bits/stl_vector.h:331:31:   required from ‘std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&) [with _Tp = std::vector<std::unique_ptr<Cell> >; _Alloc = std::allocator<std::vector<std::unique_ptr<Cell> > >]’
./src/Systems/Physics/Grid.hpp:9:7:   required from here
/usr/include/c++/7/bits/stl_construct.h:75:7: error: use of deleted function ‘std::unique_ptr<_Tp, _Dp>::unique_ptr(const std::unique_ptr<_Tp, _Dp>&) [with _Tp = Cell; _Dp = std::default_delete<Cell>]’
     { ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...); }
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/memory:80:0,
                 from ./src/Game.hpp:5,
                 from ./src/main.cpp:3:
/usr/include/c++/7/bits/unique_ptr.h:388:7: note: declared here
       unique_ptr(const unique_ptr&) = delete;

网格仅由

物理系统使用

PhysicsSystem::PhysicsSystem(float gridLength, float cellHalfWidth) : grid(gridLength, cellHalfWidth)
{
    this->primaryBitset = ComponentType::Physics | ComponentType::Transform;
}

物理系统只是在这里初始化的

Game::Game(int width, int height) :
    width(width), height(height) , 
    physicsSystem(70.f, 5.f)
{
   // stuff
}

---

您正在尝试复制构造唯一指针的向量。错误来自

Grid.hpp

。那么，显示该文件。即：显示

网格

的声明。您还应该显示

网格

实例的构造和复制位置。无论如何，很明显Max是对的。您的类需要一个移动构造函数，因为根据定义，

unique\ptr

是不可复制的。@下划线\d这很有意义，我已经用请求的信息更新了问题的详细信息。奇怪的是，我没有在本地看到这个问题，代码编译正常。

PhysicsSystem::PhysicsSystem(float gridLength, float cellHalfWidth) : grid(gridLength, cellHalfWidth)
{
    this->primaryBitset = ComponentType::Physics | ComponentType::Transform;
}

Game::Game(int width, int height) :
    width(width), height(height) , 
    physicsSystem(70.f, 5.f)
{
   // stuff
}