insert_or_assign not work with hint

[tower120]

The following code doesn't compiles :

https://wandbox.org/permlink/GltFoHe4IcVW9oBd

#include <boost/container/flat_map.hpp>

int main() {
    boost::container::flat_map<int, int> map;    
    map.insert_or_assign(map.begin(), 1,1);
    return 0;
}

[igaztanaga]

Many thanks for the report!