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  1. Qt
  2. QTBUG-86983

QProcess::start() causes SIGTRAP and then SISSEGV under GDB

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    • Icon: Bug Bug
    • Resolution: Duplicate
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    • 5.15.2
    • 5.15.1
    • Core: I/O
    • None
    • ArchLinux with all stuff from the repos:

      * GCC v10.2.0
      * CLANG v10.0.1
      * GDB v9.2
      * Qt v5.15.1
      * QtCreator v4.13.1
    • Linux/X11

      This simple program:

      #include <QCoreApplication>
#include <QProcess>
#include <QDebug>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    auto p = new QProcess(qApp);
    p->start(QStringLiteral("/usr/bin/dd"), {"--help"});
    return a.exec();
}

      under the GDB debugger, causes SIGTRAP and then SISSEGV signals on line 'p->start(...)'.

      • This happens with any executables, running from the QProcess.
      • This happens as from QtCreator, and as from the GDB command line.

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            thiago Thiago Macieira
            kuzulis Denis Shienkov
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              Created:
              Updated:
              Resolved:

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