r240748 seems to be on the right path. Be more explicit.
http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/builds/1961/
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240750
91177308-0d34-0410-b5e6-
96231b3b80d8
public:
const_iterator() = default;
// Placate MSVC by explicitly scoping 'iterator'.
- const_iterator(IntrusiveBackList::iterator X) : N(X.N) {}
+ const_iterator(typename IntrusiveBackList<T>::iterator X) : N(X.N) {}
explicit const_iterator(const T *N) : N(N) {}
const_iterator &operator++() {