/Library/Developer/CommandLineTools/usr/include/c++/v1/memory:1805:31: error: no matching constructor for initialization of
          'std::__1::pair<const Symbol, Decl *>'
                ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...);
                                  ^   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Library/Developer/CommandLineTools/usr/include/c++/v1/memory:1715:18: note: in instantiation of function template specialization
          'std::__1::allocator<std::__1::__hash_node<std::__1::__hash_value_type<Symbol, Decl *>, void *> >::construct<std::__1::pair<const
          Symbol, Decl *>, std::__1::basic_string<char>, Decl *&>' requested here
                {__a.construct(__p, _VSTD::forward<_Args>(__args)...);}
                     ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/memory:1561:14: note: in instantiation of function template specialization
          'std::__1::allocator_traits<std::__1::allocator<std::__1::__hash_node<std::__1::__hash_value_type<Symbol, Decl *>, void *> >
          >::__construct<std::__1::pair<const Symbol, Decl *>, std::__1::basic_string<char>, Decl *&>' requested here
                {__construct(__has_construct<allocator_type, _Tp*, _Args...>(),
                 ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/__hash_table:2288:20: note: in instantiation of function template specialization
          'std::__1::allocator_traits<std::__1::allocator<std::__1::__hash_node<std::__1::__hash_value_type<Symbol, Decl *>, void *> >
          >::construct<std::__1::pair<const Symbol, Decl *>, std::__1::basic_string<char>, Decl *&>' requested here
        __node_traits::construct(__na, _NodeTypes::__get_ptr(__h->__value_), _VSTD::forward<_Args>(__args)...);
                       ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/__hash_table:2070:25: note: in instantiation of function template specialization
          'std::__1::__hash_table<std::__1::__hash_value_type<Symbol, Decl *>, std::__1::__unordered_map_hasher<Symbol,
          std::__1::__hash_value_type<Symbol, Decl *>, std::__1::hash< ::Symbol>, true>, std::__1::__unordered_map_equal<Symbol,
          std::__1::__hash_value_type<Symbol, Decl *>, std::__1::equal_to<Symbol>, true>, std::__1::allocator<std::__1::__hash_value_type<Symbol,
          Decl *> > >::__construct_node<std::__1::basic_string<char>, Decl *&>' requested here
        __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...);
                            ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/__hash_table:1090:14: note: in instantiation of function template specialization
          'std::__1::__hash_table<std::__1::__hash_value_type<Symbol, Decl *>, std::__1::__unordered_map_hasher<Symbol,
          std::__1::__hash_value_type<Symbol, Decl *>, std::__1::hash< ::Symbol>, true>, std::__1::__unordered_map_equal<Symbol,
          std::__1::__hash_value_type<Symbol, Decl *>, std::__1::equal_to<Symbol>, true>, std::__1::allocator<std::__1::__hash_value_type<Symbol,
          Decl *> > >::__emplace_unique_impl<std::__1::basic_string<char>, Decl *&>' requested here
          return __emplace_unique_impl(_VSTD::forward<_Args>(__args)...);
                 ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/unordered_map:971:25: note: in instantiation of function template specialization
          'std::__1::__hash_table<std::__1::__hash_value_type<Symbol, Decl *>, std::__1::__unordered_map_hasher<Symbol,
          std::__1::__hash_value_type<Symbol, Decl *>, std::__1::hash< ::Symbol>, true>, std::__1::__unordered_map_equal<Symbol,
          std::__1::__hash_value_type<Symbol, Decl *>, std::__1::equal_to<Symbol>, true>, std::__1::allocator<std::__1::__hash_value_type<Symbol,
          Decl *> > >::__emplace_unique<std::__1::basic_string<char>, Decl *&>' requested here
            return __table_.__emplace_unique(_VSTD::forward<_Args>(__args)...);
                            ^
    /Users/nfgallimore/Code/Compilers/malan/src/scope.hpp:25:13: note: in instantiation of function template specialization
          'std::__1::unordered_map<Symbol, Decl *, std::__1::hash< ::Symbol>, std::__1::equal_to<Symbol>, std::__1::allocator<std::__1::pair<const
          Symbol, Decl *> > >::emplace<std::__1::basic_string<char>, Decl *&>' requested here
                emplace(d->get_name()->get_str(), d);
                ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:422:5: note: candidate constructor not viable: no known conversion from
          'std::__1::basic_string<char>' to 'const const Symbol' for 1st argument
        pair(_T1 const& __t1, _T2 const& __t2)
        ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:349:41: note: candidate template ignored: disabled by 'enable_if'
          [with _Dummy = true]
        using _EnableB = typename enable_if<_Val, bool>::type;
                                            ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:349:41: note: candidate template ignored: disabled by 'enable_if' [with _U1 =
          std::__1::basic_string<char>, _U2 = Decl *&]
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:349:41: note: candidate template ignored: disabled by 'enable_if' [with _U1 =
          std::__1::basic_string<char>, _U2 = Decl *&]
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:409:5: note: candidate constructor template not viable: requires 0 arguments,
          but 2 were provided
        pair() : first(), second() {}
        ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:443:14: note: candidate constructor template not viable: requires single
          argument '__p', but 2 arguments were provided
        explicit pair(pair<_U1, _U2> const& __p)
                 ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:450:5: note: candidate constructor template not viable: requires single
          argument '__p', but 2 arguments were provided
        pair(pair<_U1, _U2> const& __p)
        ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:457:14: note: candidate constructor template not viable: requires single
          argument '__p', but 2 arguments were provided
        explicit pair(pair<_U1, _U2>&&__p)
                 ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:464:5: note: candidate constructor template not viable: requires single
          argument '__p', but 2 arguments were provided
        pair(pair<_U1, _U2>&& __p)
        ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:471:14: note: candidate constructor template not viable: requires single
          argument '__p', but 2 arguments were provided
        explicit pair(_Tuple&& __p)
                 ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:479:5: note: candidate constructor template not viable: requires single
          argument '__p', but 2 arguments were provided
        pair(_Tuple&& __p)
        ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:485:5: note: candidate constructor template not viable: requires 3 arguments,
          but 2 were provided
        pair(piecewise_construct_t __pc,
        ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:542:9: note: candidate constructor template not viable: requires 5 arguments,
          but 2 were provided
            pair(piecewise_construct_t,
            ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:324:5: note: candidate constructor not viable: requires 1 argument, but 2 were
          provided
        pair(pair const&) = default;
        ^
    /Library/Developer/CommandLineTools/usr/include/c++/v1/utility:325:5: note: candidate constructor not viable: requires 1 argument, but 2 were
          provided
        pair(pair&&) = default;
        ^
    1 error generated.