为什么 Coliru 的 Clang 无法编译 vector::push_back？

Question

See it here. 程序很平凡，像这样：

#include <vector>

std::vector<int> bombs;

int main()
{
    bombs.push_back(42); // compile errors
}

诊断对我来说意义不大：

In file included from main.cpp:1:

In file included from /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/vector:60:

In file included from /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/bits/stl_algobase.h:64:

In file included from /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/bits/stl_pair.h:59:

In file included from /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/bits/move.h:55:

/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/type_traits:1061:48: error: '_Tp' does not refer to a value
  : public __bool_constant<__is_assignable(_Tp, _Up)>
                                           ^
/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/type_traits:1059:21: note: declared here
template<typename _Tp, typename _Up>
                  ^
/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/type_traits:1061:53: error: _Up does not refer to a value
  : public __bool_constant<__is_assignable(_Tp, _Up)>
                                                ^
/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/type_traits:1059:35: note: declared here
template<typename _Tp, typename _Up>
                                ^
/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/type_traits:1062:5: error: expected class name
{ };
^
In file included from main.cpp:1:

In file included from /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/vector:63:

/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/bits/stl_uninitialized.h:128:70: error: no member named value in std::is_assignable<int &, int &&>
  const bool __assignable = is_assignable<_RefType2, _RefType1>::value;
                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/bits/stl_uninitialized.h:289:19: note: in instantiation of function template specialization std::uninitialized_copy<std::move_iterator<int *>, int *> requested here
{ return std::uninitialized_copy(__first, __last, __result); }
              ^
/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/bits/stl_uninitialized.h:310:19: note: in instantiation of function template specialization std::__uninitialized_copy_a<std::move_iterator<int *>, int *, int> requested here
  return std::__uninitialized_copy_a
              ^
/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/bits/vector.tcc:446:13: note: in instantiation of function template specialization std::__uninitialized_move_if_noexcept_a<int *, int *, std::allocator<int> > requested here
        = std::__uninitialized_move_if_noexcept_a
               ^
/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/bits/vector.tcc:109:4: note: in instantiation of function template specialization std::vector<int, std::allocator<int> >::_M_realloc_insert<int> requested here
      _M_realloc_insert(end(), std::forward<_Args>(__args)...);
      ^
/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../include/c++/8.1.0/bits/stl_vector.h:1091:9: note: in instantiation of function template specialization std::vector<int, std::allocator<int> >::emplace_back<int> requested here
  { emplace_back(std::move(__x)); }
    ^
main.cpp:7:9: note: in instantiation of member function std::vector<int, std::allocator<int> >::push_back requested here
bombs.push_back(42);
      ^
4 errors generated.

与 g++ 相同，编译没有任何问题。我真的不能看 Coliru 的 Clang 包含的库 headers 用于编程以自行解决。有谁知道哪里出了问题以及如何解决这个问题？

Answer 1

我 100% 不会担心这个，这只是 Coliru 的一些怪事。它在 Wandbox 上完美运行，回到 Clang 3.1

根据 donations page，您可能可以将此问题报告给 [电子邮件地址已编辑]。

为什么 Coliru 的 Clang 无法编译 vector::push_back？

Why Clang at Coliru can't compile vector::push_back?

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