线程释放某线程分配的内存，会阻塞？ [复制链接]

#include <QtCore/QCoreApplication>
#include <QThread>

class thread:public QThread
{
protected:
void run();
public:
QChar* xx;
};

void thread::run()
{
xx = new QChar;
}

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
thread th;
th.start();

QThread::yieldCurrentThread();
delete th.xx; // 为什么会在这儿阻塞啊？请高手指点，谢谢！
return getchar();
}

需要new