Convert a std::chrono::system_clock::time_point to std::string

timePointAsString.cpp

static std::string timePointAsString(const std::chrono::system_clock::time_point& tp) {
    std::time_t t = std::chrono::system_clock::to_time_t(tp);
    std::string ts = std::ctime(&t);
    ts.resize(ts.size()-1);
    return ts;
}

This works, but just to let you know this isn't thread-safe, std::ctime can return a nullptr if the static buffer it points to is overwritten by concurrent calls to the function, like logs for example which occur from varying sources.

An if predicate would be helpful here to prevent crashes.