C++ MongoDB C++；连接示例分段错误

我正在尝试连接到我的云mongodb数据库。我能够使用MunGDB阿特拉斯访问数据库，但是使用C++连接是造成分段错误的。我想做的是创建一个mongodb实例，然后检查该实例是否存在

#include <cstdlib>
#include <iostream>
#include <string>
#include <bsoncxx/builder/stream/document.hpp>
#include <bsoncxx/builder/basic/kvp.hpp>
#include <bsoncxx/json.hpp>
#include <bsoncxx/stdx/make_unique.hpp>
#include <mongocxx/client.hpp>
#include <mongocxx/instance.hpp>
#include <mongocxx/logger.hpp>
#include <mongocxx/options/client.hpp>
#include <mongocxx/uri.hpp>

namespace {

class logger final : public mongocxx::logger {
   public:
    explicit logger(std::ostream* stream) : _stream(stream) {}

    void operator()(mongocxx::log_level level,
                    bsoncxx::stdx::string_view domain,
                    bsoncxx::stdx::string_view message) noexcept override {
        if (level >= mongocxx::log_level::k_trace)
            return;
        *_stream << '[' << mongocxx::to_string(level) << '@' << domain << "] " << message << '\n';
    }

   private:
    std::ostream* const _stream;
};

}  // namespace

int main(int argc, char* argv[]) {
    using bsoncxx::builder::basic::kvp;
    using bsoncxx::builder::basic::make_document;
    mongocxx::client conn{mongocxx::uri{}};
    // The mongocxx::instance constructor and destructor initialize and shut down the driver,
    // respectively. Therefore, a mongocxx::instance must be created before using the driver and
    // must remain alive for as long as the driver is in use.
    mongocxx::instance inst{bsoncxx::stdx::make_unique<logger>(&std::cout)};

    try {
        //const auto uri = mongocxx::uri{(argc >= 2) ? argv[1] : mongocxx::uri::k_default_uri};
        const auto uri =mongocxx::uri{"mongodb+srv://user_name:passwd@test.qhkzc.mongodb.net/db_?"};
          
         auto db = conn["name"];   
      {
          // @begin: cpp-query-all
          auto cursor = db["employees"].find({});
          for (auto&& doc : cursor) {
              std::cout << bsoncxx::to_json(doc) << std::endl;
          }
          // @end: cpp-query-all
      }
 

        return EXIT_SUCCESS;

    } catch (const std::exception& xcp) {
        std::cout << "connection failed: " << xcp.what() << "\n";
        return EXIT_FAILURE;
    }
}

但我可以运行以下代码：

#include <mongocxx/client.hpp>
#include <mongocxx/instance.hpp>
#include <iostream>
#include <chrono>
#include <bsoncxx/builder/basic/array.hpp>
#include <bsoncxx/builder/basic/document.hpp>
#include <bsoncxx/builder/basic/kvp.hpp>
#include <bsoncxx/json.hpp>
#include <bsoncxx/types.hpp>
#include <mongocxx/client.hpp>
#include <mongocxx/instance.hpp>
#include <mongocxx/uri.hpp>

using bsoncxx::builder::basic::kvp;
using bsoncxx::builder::basic::make_array;
using bsoncxx::builder::basic::make_document;

int main(void) {
mongocxx::instance inst{};
mongocxx::client conn{mongocxx::uri{"mongodb+srv://USER:PASSWD@test.qhkzc.mongodb.net/DB?retryWrites=true&w=majority"}};
mongocxx::database db = conn["test"];

    
    // Query for all the documents in a collection.
    {
        auto cursor = db["restaurants"].find({});
        for (auto&& doc : cursor) {
            std::cout << bsoncxx::to_json(doc) << std::endl;
        }
    }
    
    
     // Replace the contents of a single document.
    {
        db["restaurants"].update_one(
            make_document(kvp("name", "Vella")),
            make_document(kvp("$set", make_document(kvp("cuisine", "American (New)"))),
                          kvp("$currentDate", make_document(kvp("lastModified", true)))));
    }
}

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使用bsoncxx:：builder:：basic:：kvp；
使用bsoncxx:：builder:：basic:：make\u数组；
使用bsoncxx:：builder:：basic:：make\u文档；
内部主（空）{
mongocxx:：实例inst{}；
mongocxx:：客户端连接{mongocxx:：uri{“mongodb”+srv://USER:PASSWD@test.qhkzc.mongodb.net/DB？retryWrites=true&w=maist“}；
mongocxx:：数据库db=conn[“test”]；
//查询集合中的所有文档。
{
自动游标=db[“餐厅”]。查找（{}）；
用于（自动和文档：光标）{
std：：您可以使用它来分析内核转储并获得崩溃的根本原因吗
#include <mongocxx/client.hpp>
#include <mongocxx/instance.hpp>
#include <iostream>
#include <chrono>
#include <bsoncxx/builder/basic/array.hpp>
#include <bsoncxx/builder/basic/document.hpp>
#include <bsoncxx/builder/basic/kvp.hpp>
#include <bsoncxx/json.hpp>
#include <bsoncxx/types.hpp>
#include <mongocxx/client.hpp>
#include <mongocxx/instance.hpp>
#include <mongocxx/uri.hpp>

using bsoncxx::builder::basic::kvp;
using bsoncxx::builder::basic::make_array;
using bsoncxx::builder::basic::make_document;

int main(void) {
mongocxx::instance inst{};
mongocxx::client conn{mongocxx::uri{"mongodb+srv://USER:PASSWD@test.qhkzc.mongodb.net/DB?retryWrites=true&w=majority"}};
mongocxx::database db = conn["test"];

    
    // Query for all the documents in a collection.
    {
        auto cursor = db["restaurants"].find({});
        for (auto&& doc : cursor) {
            std::cout << bsoncxx::to_json(doc) << std::endl;
        }
    }
    
    
     // Replace the contents of a single document.
    {
        db["restaurants"].update_one(
            make_document(kvp("name", "Vella")),
            make_document(kvp("$set", make_document(kvp("cuisine", "American (New)"))),
                          kvp("$currentDate", make_document(kvp("lastModified", true)))));
    }
}