关于Qt的编译问题 undefined reference to `QApplication::commitData(Q

下面的文件是用QT设计器设计UI后取了其中的头文件，我在其他的窗口调用ui_mainwindow窗口时候会提示The inferior stopped because it recieved a signal from the Operating System的错误,提示是SEGMENT，好象还有什么heap的问题。出错行在兰色部分。
当把有关QACTION的部分注释掉后可以正常弹出窗口。是指针引用不正确么？这个是怎么回事啊？

ui_mainwindow.h文件代码内容:
/********************************************************************************
** Form generated from reading UI file 'gkxt2uW4872.ui'
**
** Created: Fri Dec 31 12:17:38 2010
** by: Qt User Interface Compiler version 4.7.0
**
** WARNING! All changes made in this file will be lost when recompiling UI file!
********************************************************************************/

#ifndef UI_MAINWINDOW_H
#define UI_MAINWINDOW_H

#include <QtCore/QVariant>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QButtonGroup>
#include <QtGui/QHeaderView>
#include <QtGui/QLabel>
#include <QtGui/QMainWindow>
#include <QtGui/QMenu>
#include <QtGui/QMenuBar>
#include <QtGui/QPushButton>
#include <QtGui/QRadioButton>
#include <QtGui/QScrollArea>
#include <QtGui/QScrollBar>
#include <QtGui/QStatusBar>
#include <QtGui/QWidget>

QT_BEGIN_NAMESPACE

class Ui_m_window
{
public:
QAction *menu_start;
QAction *menu_exit;
QAction *action_3;
QAction *action_5;
QAction *action_6;
QAction *menu_sysset;
QAction *menu_queset;
QAction *menu_login;
QAction *menu_bbs;
QAction *menu_learn;
QAction *action_12;
QAction *action_14;
QWidget *centralWidget;
QScrollArea *scrollArea;
QWidget *scrollAreaWidgetContents;
QPushButton *pBut_up;
QPushButton *pBut_next;
QRadioButton *rBut_ans_a;
QRadioButton *rBut_ans_b;
QRadioButton *rBut_ans_c;
QRadioButton *rBut_ans_d;
QScrollArea *scrollArea_2;
QWidget *scrollAreaWidgetContents_2;
QScrollBar *verticalScrollBar;
QLabel *label_hint;
QLabel *label_time;
QMenuBar *menuBar;
QMenu *menu_file;
QMenu *menu_tool;
QMenu *menu_set;
QMenu *menu_help;
QStatusBar *statusBar;

void setupUi(QMainWindow *m_window)
{
if (m_window->objectName().isEmpty())
m_window->setObjectName(QString::fromUtf8("m_window"));
m_window->setEnabled(true);
m_window->resize(650, 420);
m_window->setMinimumSize(QSize(650, 420));
m_window->setMaximumSize(QSize(650, 420));
/*
menu_start = new QAction(m_window);//提示出错的一行
menu_start->setObjectName(QString::fromUtf8("menu_start"));
menu_start->setAutoRepeat(false);
menu_exit = new QAction(m_window);
menu_exit->setObjectName(QString::fromUtf8("menu_exit"));

action_3 = new QAction(m_window);
action_3->setObjectName(QString::fromUtf8("action_3"));
action_5 = new QAction(m_window);
action_5->setObjectName(QString::fromUtf8("action_5"));
action_6 = new QAction(m_window);
action_6->setObjectName(QString::fromUtf8("action_6"));
menu_sysset = new QAction(m_window);
menu_sysset->setObjectName(QString::fromUtf8("menu_sysset"));
menu_queset = new QAction(m_window);
menu_queset->setObjectName(QString::fromUtf8("menu_queset"));
menu_login = new QAction(m_window);
menu_login->setObjectName(QString::fromUtf8("menu_login"));
menu_bbs = new QAction(m_window);
menu_bbs->setObjectName(QString::fromUtf8("menu_bbs"));
menu_learn = new QAction(m_window);
menu_learn->setObjectName(QString::fromUtf8("menu_learn"));
………………中间的代码省略掉了……………………………………
statusBar->setObjectName(QString::fromUtf8("statusBar"));
m_window->setStatusBar(statusBar);

menuBar->addAction(menu_file->menuAction());
menuBar->addAction(menu_tool->menuAction());
menuBar->addAction(menu_set->menuAction());
menuBar->addAction(menu_help->menuAction());
menu_file->addAction(menu_start);
menu_file->addAction(menu_exit);
menu_tool->addAction(menu_login);
menu_tool->addAction(menu_bbs);
menu_tool->addAction(menu_learn);
menu_tool->addSeparator();
menu_tool->addAction(action_12);
menu_tool->addAction(action_14);
menu_set->addAction(menu_sysset);
menu_set->addAction(menu_queset);
menu_help->addAction(action_3);
menu_help->addAction(action_5);
menu_help->addAction(action_6);
*/
retranslateUi(m_window);


QMetaObject::connectSlotsByName(m_window);
} // setupUi

void retranslateUi(QMainWindow *m_window)
{
m_window->setWindowTitle(QApplication::translate("m_window", "\350\200\203\350\257\225\346\265\213\350\257\225\347\263\273\347\273\237", 0, QApplication::UnicodeUTF8));
menu_start->setText(QApplication::translate("m_window", "\345\274\200\345\247\213\346\265\213\350\257\225", 0, QApplication::UnicodeUTF8));
menu_exit->setText(QApplication::translate("m_window", "\351\200\200\345\207\272", 0, QApplication::UnicodeUTF8));
action_3->setText(QApplication::translate("m_window", "\346\263\250\345\206\214", 0, QApplication::UnicodeUTF8));
action_5->setText(QApplication::translate("m_window", "\344\275\277\347\224\250\350\257\264\346\230\216", 0, QApplication::UnicodeUTF8));
action_6->setText(QApplication::translate("m_window", "\347\211\210\346\235\203", 0, QApplication::UnicodeUTF8));
menu_sysset->setText(QApplication::translate("m_window", "\347\263\273\347\273\237\350\256\276\347\275\256", 0, QApplication::UnicodeUTF8));
menu_queset->setText(QApplication::translate("m_window", "\351\242\230\345\272\223\350\256\276\347\275\256", 0, QApplication::UnicodeUTF8));
menu_login->setText(QApplication::translate("m_window", "\347\231\273\351\231\206\347\263\273\347\273\237", 0, QApplication::UnicodeUTF8));
menu_bbs->setText(QApplication::translate("m_window", "\350\256\277\351\227\256\350\256\272\345\235\233", 0, QApplication::UnicodeUTF8));
menu_learn->setText(QApplication::translate("m_window", "\345\234\250\347\272\277\345\255\246\344\271\240", 0, QApplication::UnicodeUTF8));
action_12->setText(QApplication::translate("m_window", "\350\256\260\345\277\206\345\212\233\346\265\213\350\257\225", 0, QApplication::UnicodeUTF8));
action_14->setText(QApplication::translate("m_window", "\346\216\250\347\220\206\346\265\213\350\257\225", 0, QApplication::UnicodeUTF8));
pBut_up->setText(QApplication::translate("m_window", "\344\270\212\344\270\200\351\242\230\347\233\256", 0, QApplication::UnicodeUTF8));
pBut_next->setText(QApplication::translate("m_window", "\344\270\213\344\270\200\351\242\230\347\233\256", 0, QApplication::UnicodeUTF8));
rBut_ans_a->setText(QApplication::translate("m_window", "A", 0, QApplication::UnicodeUTF8));
rBut_ans_b->setText(QApplication::translate("m_window", "B", 0, QApplication::UnicodeUTF8));
rBut_ans_c->setText(QApplication::translate("m_window", "C", 0, QApplication::UnicodeUTF8));
rBut_ans_d->setText(QApplication::translate("m_window", "D", 0, QApplication::UnicodeUTF8));
label_hint->setText(QApplication::translate("m_window", "\351\200\211\346\213\251\347\255\224\346\241\210", 0, QApplication::UnicodeUTF8));
label_time->setText(QApplication::translate("m_window", "____________", 0, QApplication::UnicodeUTF8));
menu_file->setTitle(QApplication::translate("m_window", "\346\226\207\344\273\266", 0, QApplication::UnicodeUTF8));
menu_tool->setTitle(QApplication::translate("m_window", "\345\267\245\345\205\267", 0, QApplication::UnicodeUTF8));
menu_set->setTitle(QApplication::translate("m_window", "\350\256\276\347\275\256", 0, QApplication::UnicodeUTF8));
menu_help->setTitle(QApplication::translate("m_window", "\345\270\256\345\212\251", 0, QApplication::UnicodeUTF8));
} // retranslateUi

};

namespace Ui {
class m_window: public Ui_m_window {};
} // namespace Ui

QT_END_NAMESPACE

#endif // 5GKXT2UW4872_H