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

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

XMLWordPrintable

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

      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.

        1. qtbug_89678.png
          qtbug_89678.png
          9 kB
        No reviews matched the request. Check your Options in the drop-down menu of this sections header.

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

              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes