Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-89678

Function crashes as soon as a QVariant is create with -fstack-protector on

    XMLWordPrintable

Details

    • Bug
    • Resolution: Out of scope
    • P1: Critical
    • None
    • 6.0.0
    • Core: Containers and Algorithms
    • None
    • Windows

    Description

      1. Have a Qt 6.0.0 with GCC 8.1.0 on Windows (should also work on Linux). This is a 6.0.0 regression, with Qt 5.15 it works fine.
      2. Compile the following program:
      #include <QCoreApplication>
#include <QTimer>
#include <QVariant>

void setCursor() {
    QVariant(1);
}

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    setCursor();

    QTimer::singleShot(0, &a, &QCoreApplication::quit);
    return a.exec();
}

      QT += core
SOURCES += main.cpp
QMAKE_CXXFLAGS += -fstack-protector
win32: LIBS += -lssp
      1. In setCursor() the program crashes. If you remove stack protection by removing the last two lines in the .pro file, the error goes away.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-89675 Functions using QSettings crash with -fstack-protector on

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-89676 QTableWidgetItem::setText() crashes with -fstack-protector on

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          No reviews matched the request. Check your Options in the drop-down menu of this sections header.

          Activity

            People

              thiago Thiago Macieira
              szotsaki Szőts Ákos
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Gerrit Reviews

                  There are no open Gerrit changes