Qt app crashed after upgrading Qt5 libraries to 5.15.10+dfsg-5build1 in noble-proposed

[Xu Zhen]

After upgrading Qt5 libraries to 5.15.10+dfsg-5build1, several Qt5 applications (including lxqt-panel and goldendict) crashed, leaving a "*** buffer overflow detected ***: terminated" message in console.

It seems that the crashed applications all used the QSettings. The following sample code will crash with 5.15.10+dfsg-5build1, but not with 5.15.10+dfsg-5

#include <QSettings>
int main(int argc, char *argv[])
{
    QSettings s("/tmp/a.ini", QSettings::IniFormat);
    s.setValue("a", 123);
    s.sync();
    return 0;
}

[Rik Mills (rikmills)]

Perhaps this upload helps?

https://launchpad.net/ubuntu/+source/qtbase-opensource-src/5.15.10+dfsg-5ubuntu1

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Rik Mills (rikmills)]

Note that 5.15.10+dfsg-5build1 is from the noble-propose pocket, which should not normally be installed on a machine you expect to be relatively stable.

[Xu Zhen (xuzhen666)]

Upgraded to 5.15.10+dfsg-5ubuntu1, no crash anymore