小编E_g*_*E_g的帖子

（我知道这不是常规的实现，但是我想尝试一下。）

struct TrieNode {
    std::unordered_map<char, TrieNode> next;
};

此类已很好地编译，并且在Visual Studio 2017下可以按预期工作。但是，它不使用gcc（c ++ 14）进行编译（正如我期望的那样）。

In file included from /usr/include/c++/8/bits/stl_algobase.h:64,
                 from /usr/include/c++/8/bits/char_traits.h:39,
                 from /usr/include/c++/8/ios:40,
                 from /usr/include/c++/8/ostream:38,
                 from /usr/include/c++/8/iostream:39,
                 from prog.cpp:1:
    /usr/include/c++/8/bits/stl_pair.h: In instantiation of ‘struct std::pair<const char, TrieNode>’:
    /usr/include/c++/8/bits/stl_vector.h:1610:27:   required from ‘struct __gnu_cxx::__aligned_buffer<std::pair<const char, TrieNode> >’
    /usr/include/c++/8/bits/hashtable_policy.h:234:43:   required from ‘struct std::__detail::_Hash_node_value_base<std::pair<const char, TrieNode> >’
    /usr/include/c++/8/bits/hashtable_policy.h:280:12:   required from ‘struct std::__detail::_Hash_node<std::pair<const char, TrieNode>, false>’
    /usr/include/c++/8/bits/hashtable_policy.h:2027:49:   required from ‘struct std::__detail::_Hashtable_alloc<std::allocator<std::__detail::_Hash_node<std::pair<const char, TrieNode>, false> > >’
    /usr/include/c++/8/bits/hashtable.h:173:11:   required from ‘class std::_Hashtable<char, std::pair<const char, TrieNode>, std::allocator<std::pair<const char, …

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