Creating const_iterator from raw pointer yields compilation error on macOS

I have code which used to work when it was compiled with libstdc++ library on macOS (Sierra 10.12.4). I'm now switching over to libc++ and it gives compile-time error:

main.cpp:41:44: error: calling a private constructor of class 'std::__1::__wrap_iter<const unsigned char *>'
        std::vector<uint8_t>::const_iterator i1 = std::vector<uint8_t>::const_iterator(data);
                                                  ^
/Applications/http://ift.tt/2rRWiLe: note: declared private here
    _LIBCPP_INLINE_VISIBILITY __wrap_iter(iterator_type __x) _NOEXCEPT : __i(__x) {}
                              ^
main.cpp:42:44: error: calling a private constructor of class 'std::__1::__wrap_iter<const unsigned char *>'
        std::vector<uint8_t>::const_iterator i2 = std::vector<uint8_t>::const_iterator(data+n);
                                                  ^
/Applications/http://ift.tt/2rRWiLe: note: declared private here
    _LIBCPP_INLINE_VISIBILITY __wrap_iter(iterator_type __x) _NOEXCEPT : __i(__x) {}
                              ^
2 errors generated.

Apparently, const_iterator constructor which takes raw data pointers is now private in macOS' libc++ library.

The code below fails when compiled as g++ main.cpp -std=c++11 and succeeds when compiled as g++ main.cpp -std=c++11 -stdlib=libstdc++:

#include <iostream>
#include <vector>

 class Blob {
        public:
            size_t size() const { return (end_-begin_); }
            uint8_t operator[](size_t pos) const { return *(begin_+pos); }
            const uint8_t* data() const { return &(*begin_); }

            Blob(const Blob& b):begin_(b.begin_), end_(b.end_){}
            Blob(const std::vector<uint8_t>::const_iterator& begin, 
                const std::vector<uint8_t>::const_iterator& end):
                begin_(begin), end_(end){}
            Blob& operator=(const Blob& b)
            {
                if (this != &b)
                {
                    begin_ = b.begin_;
                    end_ = b.end_;
                }

                return *this;
            }

            std::vector<uint8_t>::const_iterator begin() const 
            { return begin_; }
            std::vector<uint8_t>::const_iterator end() const
            { return end_; }
        protected:
            std::vector<uint8_t>::const_iterator begin_, end_;

            Blob() = delete;
        };


int main()
{
    std::cout << "hello" << std::endl;
    int n = 100;
    uint8_t *data = new uint8_t(n);

    Blob b(std::vector<uint8_t>::const_iterator(data), 
        std::vector<uint8_t>::const_iterator(data+n));
}

How do I make it compile with libc++?