当main函数返回时转储核心

Question

我有一个应该写入下面定义的gml文件的类。该类有一个方法来完成写入。如果调用该函数，则在主函数返回时获得核心转储。我可以创建类的对象没有问题，它只发生在write函数被调用时。该函数也没有错误地返回，程序的其余部分运行。

GML作家:

class GMLWriter {
public:
    void write(List<User*> usr, const char* filename);
};
void GMLWriter::write(List<User*> usr, const char* filename)
{
    cout << "Filename: " << filename << endl;
    ofstream outfile;
    outfile.open(filename);
    if (!outfile.is_open())
        cout << "Couldn't open the file..." << endl;
    outfile << "graph [n";
    // Write user data
    for (int n = 0; n < usr.size(); n++) {
        cout << "Writing node..." << endl;
        outfile << "node [n";
        outfile << "id " << usr[n]->getID() << "n";
        outfile << "name "" << usr[n]->getName() << ""n";
        outfile << "age " << usr[n]->getAge() << "n";
        outfile << "zip " << usr[n]->getZip() << "n";
        outfile << "]n";
    }
    // Write associations
    for (int n = 0; n < usr.size(); n++) {
        List<int> tList = usr[n]->getFriends();
        cout << "Writing edge..." << endl;
        //List<int> tempL = usr[n]->getFriends();
        for (int i = 0; i < tList.size(); i++) {
            outfile << "edge [n";
            outfile << "source " << usr[n]->getID() << "n";
            outfile << "target " << tList[i] << "n";
            outfile << "]n";
        }
    }
    outfile << "]"; // end graph
    cout << "End function" << endl;
    outfile.close();
}

User只是包含要写入文件的变量，这些方法工作得很好。

我花了几个小时在调试器上，还没能找到问题。如有任何帮助，我将不胜感激。

谢谢!

Answer 1

尝试查看核心转储:http://www.network-theory.co.uk/docs/gccintro/gccintro_38.html