@jsulm said in QT 5.14.2 crashes on Centos 7.9:

@QQMJ said in QT 5.14.2 crashes on Centos 7.9:

#9 0x00007f0a046c5203 in QWidget::~QWidget() () from /opt/yadev/3rdParty/cpp/Nokia/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Widgets.so.5
#10 0x000000000044dc50 in main.cold ()

It looks like you're deleting a widget? Can you show the code where you delete it?

@JKSH said in QT 5.14.2 crashes on Centos 7.9:

@QQMJ said in QT 5.14.2 crashes on Centos 7.9:

Is the free function called on a nullptr, or the glibc library is not compatible with QT 5.14.2？ The glibc version is 2.17 on Centos 7.9.

I have run Qt 5.15 on CentOS 7 with GCC 7 (devtoolset-7). Widgets work fine -- no crashes.

I am using GCC 11, considering to try 7.

I have tried GCC 7.3. Everything worked fine. I think the problem could be related to libwrast. When I was using GCC 11, the binary complains could not load libwrast. This warning disappears after I switched to GCC 7.

@QQMJ said in QT 5.14.2 crashes on Centos 7.9:

it crashed right after the login window turns off.

What is the "login window", and how does it related to your dlgMainWin?

They don't have any interaction.

it crashed right after the login window turns off.

What is the "login window", and how does it related to your dlgMainWin?

@QQMJ said in QT 5.14.2 crashes on Centos 7.9:

#9 0x00007f0a046c5203 in QWidget::~QWidget() () from /opt/yadev/3rdParty/cpp/Nokia/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Widgets.so.5
#10 0x000000000044dc50 in main.cold ()

It looks like you're deleting a widget? Can you show the code where you delete it?

@JKSH said in QT 5.14.2 crashes on Centos 7.9:

@QQMJ said in QT 5.14.2 crashes on Centos 7.9:

Is the free function called on a nullptr, or the glibc library is not compatible with QT 5.14.2？ The glibc version is 2.17 on Centos 7.9.

I have run Qt 5.15 on CentOS 7 with GCC 7 (devtoolset-7). Widgets work fine -- no crashes.

I am using GCC 11, considering to try 7.

Is the free function called on a nullptr, or the glibc library is not compatible with QT 5.14.2？ The glibc version is 2.17 on Centos 7.9.

I have run Qt 5.15 on CentOS 7 with GCC 7 (devtoolset-7). Widgets work fine -- no crashes.

class dlgMainWin: public QMainWindow
{
Q_OBJECT
public:
explicit dlgMainWin(QWidget* parent = 0);
~dlgMainWin();

// other parts .......................
}

Constructor:

dlgMainWin::dlgMainWin(QWidget* parent)
: QMainWindow(parent)
{
std::cout << "test constructor..." << std::endl;

// other parts .....................
}

The output line that I put on the very first line of constructor never show up, so I suspect the code crashed in the constructor of QMainWindow.

#9 0x00007f0a046c5203 in QWidget::~QWidget() () from /opt/yadev/3rdParty/cpp/Nokia/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Widgets.so.5
#10 0x000000000044dc50 in main.cold ()

It looks like you're deleting a widget? Can you show the code where you delete it?