Worked around a missing symbol from a template specialization on macOS.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

Author: ddobrev

src/CppParser/Bindings/CSharp/x86_64-apple-darwin12.4.0/Std-symbols.cpp

@@ -1,6 +1,7 @@
 #include <string>
 
 
-template class __attribute__((visibility("default"))) std::char_traits<char>;
-template class __attribute__((visibility("default"))) std::allocator<char>;
-template class __attribute__((visibility("default"))) std::basic_string<char, std::char_traits<char>, std::allocator<char>>;
+template __attribute__((visibility("default"))) std::allocator<char>::allocator() noexcept;
+template __attribute__((visibility("default"))) std::basic_string<char, std::char_traits<char>, std::allocator<char>>::basic_string(const std::basic_string<char, std::char_traits<char>, std::allocator<char>>::value_type*, const std::basic_string<char, std::char_traits<char>, std::allocator<char>>::allocator_type&);
+template __attribute__((visibility("default"))) std::basic_string<char, std::char_traits<char>, std::allocator<char>>::~basic_string() noexcept;
+template __attribute__((visibility("default"))) const std::basic_string<char, std::char_traits<char>, std::allocator<char>>::value_type* std::basic_string<char, std::char_traits<char>, std::allocator<char>>::c_str() const noexcept;