std::string 内存泄漏 [英] std::string memory leak

问题描述

我有这个类 AppController 和函数 connectPlayer:

I've got this class AppController and the function connectPlayer:

/* AppController.h */
    class AppController
    {
          // Some other declarations ...
      private:
            static const string TAG;
    };

/* AppController.cpp */

#include "AppController.h"
const string AppController::TAG = "AppController";

AppController::AppController() {
    /* some code here...*/
}

void AppController::connectPlayer() {
    std::string port;
    std::string host;
    port = CM->getMenu()->getData("PORT");
    host = CM->getMenu()->getData("HOST");
    this->setState("Connecting...");
    Logger::info(TAG, "Port: " + port);
    Logger::info(TAG, "Host: " + host);
}

当我执行程序时，我从 valgrind 得到这个:

And when I execute the program, I get this from valgrind:

==7848== 25 bytes in 1 blocks are definitely lost in loss record 160 of 671
==7848==    at 0x402842F: operator new(unsigned int) (vg_replace_malloc.c:255)
==7848==    by 0x4210A83: std::string::_Rep::_S_create(unsigned int, unsigned int, std::allocator<char> const&) (in /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16)
==7848==    by 0x4212CF7: char* std::string::_S_construct<char const*>(char const*, char const*, std::allocator<char> const&, std::forward_iterator_tag) (in /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16)
==7848==    by 0x4212E65: std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&) (in /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16)
==7848==    by 0x8080501: AppController::connectPlayer() (in /home/maine/Escritorio/taller7542/UltimaVersion/src/main)

有什么想法吗?提前致谢！

Any ideas? Thank you in advance!

推荐答案

您在全局范围内拥有 std::string 对象:AppController::TAG.

You have std::string objects in global scope: AppController::TAG.

当应用程序以不太正常的方式完成时，您会遇到此类全局对象的 valgrind 错误.大概没什么好担心的.

When application finished in not very normal way you've got these kind of valgrind errors for global objects. Probably nothing to worry.

如果您(不能/不想)更改您的程序 - 请阅读此文档:http://valgrind.org/docs/manual/manual-core.html#manual-core.suppress 摆脱这个错误.

If you (cannot/don't want to) change your program - read this doc: http://valgrind.org/docs/manual/manual-core.html#manual-core.suppress to get rid of this very error.

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