SCARY/N2913 iterator support between the multi and non-multi versions of the associative and unordered containers. I beleive lack of support for this was accidentally recently introduced (by me) and this is fixing a regression. This time tests are put in to prevent such a regression in the future. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@191692 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/unordered_map b/include/unordered_map index e1a3f64..78fee48 100644 --- a/include/unordered_map +++ b/include/unordered_map 
@@ -525,6 +525,71 @@  }  };   +#if __cplusplus >= 201103L + +template <class _Key, class _Tp> +union __hash_value_type +{ + typedef _Key key_type; + typedef _Tp mapped_type; + typedef pair<const key_type, mapped_type> value_type; + typedef pair<key_type, mapped_type> __nc_value_type; + + value_type __cc; + __nc_value_type __nc; + + template <class ..._Args> + _LIBCPP_INLINE_VISIBILITY + __hash_value_type(_Args&& ...__args) + : __cc(std::forward<_Args>(__args)...) {} + + _LIBCPP_INLINE_VISIBILITY + __hash_value_type(const __hash_value_type& __v) + : __cc(__v.__cc) {} + + _LIBCPP_INLINE_VISIBILITY + __hash_value_type(__hash_value_type&& __v) + : __nc(std::move(__v.__nc)) {} + + _LIBCPP_INLINE_VISIBILITY + __hash_value_type& operator=(const __hash_value_type& __v) + {__nc = __v.__cc; return *this;} + + _LIBCPP_INLINE_VISIBILITY + __hash_value_type& operator=(__hash_value_type&& __v) + {__nc = std::move(__v.__nc); return *this;} + + _LIBCPP_INLINE_VISIBILITY + ~__hash_value_type() {__cc.~value_type();} +}; + +#else + +template <class _Key, class _Tp> +struct __hash_value_type +{ + typedef _Key key_type; + typedef _Tp mapped_type; + typedef pair<const key_type, mapped_type> value_type; + + value_type __cc; + + _LIBCPP_INLINE_VISIBILITY + __hash_value_type() {} + + template <class _A0> + _LIBCPP_INLINE_VISIBILITY + __hash_value_type(const _A0& __a0) + : __cc(__a0) {} + + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + __hash_value_type(const _A0& __a0, const _A1& __a1) + : __cc(__a0, __a1) {} +}; + +#endif +  template <class _HashIterator>  class _LIBCPP_TYPE_VIS_ONLY __hash_map_iterator  { @@ -660,49 +725,7 @@  "Invalid allocator::value_type");    private: -#if __cplusplus >= 201103L - union __value_type - { - typedef typename unordered_map::value_type value_type; - typedef typename unordered_map::__nc_value_type __nc_value_type; - value_type __cc; - __nc_value_type __nc; - - template <class ..._Args> - __value_type(_Args&& ...__args) - : __cc(std::forward<_Args>(__args)...) {} - - __value_type(const __value_type& __v) - : __cc(__v.__cc) {} - - __value_type(__value_type&& __v) - : __nc(std::move(__v.__nc)) {} - - __value_type& operator=(const __value_type& __v) - {__nc = __v.__cc; return *this;} - - __value_type& operator=(__value_type&& __v) - {__nc = std::move(__v.__nc); return *this;} - - ~__value_type() {__cc.~value_type();} - }; -#else - struct __value_type - { - typedef typename unordered_map::value_type value_type; - value_type __cc; - - __value_type() {} - - template <class _A0> - __value_type(const _A0& __a0) - : __cc(__a0) {} - - template <class _A0, class _A1> - __value_type(const _A0& __a0, const _A1& __a1) - : __cc(__a0, __a1) {} - }; -#endif + typedef __hash_value_type<key_type, mapped_type> __value_type;  typedef __unordered_map_hasher<key_type, __value_type, hasher> __hasher;  typedef __unordered_map_equal<key_type, __value_type, key_equal> __key_equal;  typedef typename allocator_traits<allocator_type>::template @@ -1439,49 +1462,7 @@  "Invalid allocator::value_type");    private: -#if __cplusplus >= 201103L - union __value_type - { - typedef typename unordered_multimap::value_type value_type; - typedef typename unordered_multimap::__nc_value_type __nc_value_type; - value_type __cc; - __nc_value_type __nc; - - template <class ..._Args> - __value_type(_Args&& ...__args) - : __cc(std::forward<_Args>(__args)...) {} - - __value_type(const __value_type& __v) - : __cc(std::move(__v.__cc)) {} - - __value_type(__value_type&& __v) - : __nc(std::move(__v.__nc)) {} - - __value_type& operator=(const __value_type& __v) - {__nc = __v.__cc; return *this;} - - __value_type& operator=(__value_type&& __v) - {__nc = std::move(__v.__nc); return *this;} - - ~__value_type() {__cc.~value_type();} - }; -#else - struct __value_type - { - typedef typename unordered_multimap::value_type value_type; - value_type __cc; - - __value_type() {} - - template <class _A0> - __value_type(const _A0& __a0) - : __cc(__a0) {} - - template <class _A0, class _A1> - __value_type(const _A0& __a0, const _A1& __a1) - : __cc(__a0, __a1) {} - }; -#endif + typedef __hash_value_type<key_type, mapped_type> __value_type;  typedef __unordered_map_hasher<key_type, __value_type, hasher> __hasher;  typedef __unordered_map_equal<key_type, __value_type, key_equal> __key_equal;  typedef typename allocator_traits<allocator_type>::template