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  1. Qt
  2. QTBUG-89676

QTableWidgetItem::setText() crashes with -fstack-protector on

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Details

    • Bug
    • Resolution: Duplicate
    • P1: Critical
    • None
    • 6.0.0
    • 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 <QApplication>
      #include <QTableWidgetItem>
      #include <QTimer>
      
      void setText() {
          QTableWidgetItem *__qtablewidgetitem = new QTableWidgetItem();
          __qtablewidgetitem->setText("Text");
      }
      
      int main(int argc, char *argv[])
      {
          QApplication a(argc, argv);
      
          setText();
      
          QTimer::singleShot(0, &a, &QCoreApplication::quit);
          return a.exec();
      }
      
      QT += core gui widgets
      CONFIG += c++11
      SOURCES += main.cpp
      QMAKE_CXXFLAGS += -fstack-protector
      win32: LIBS += -lssp
      
      1. In setText() the program crashes. If you remove stack protection by removing the last two lines in the .pro file, the error goes away.

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              qt.team.quick.subscriptions Qt Quick and Widgets Team
              szotsaki Szőts Ákos
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                Created:
                Updated:
                Resolved:

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