Arch Linux

Description: GDB causes SIGTRAP && SIGSEGV at attempt to debug the Qt5 code

This happens at QProcess::start() call for this simple code:

#include <QCoreApplication>
#include <QProcess>

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

But this does work successfully using the LLDB debugger.

Seems, an issue is in ArchLinux GDB package.

Additional info:
* GDB v10.2-1
* Details bug on Qt bugtracker: https://bugreports.qt.io/browse/QTBUG-86983

Steps to reproduce:

1) Install:

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

2) Run QtCreator and compile the source code above.
3) Try to start debugging using the GDB.