Function generateCoreFile

plugins/debuggercommon/tests/debuggertestbase.cpp:1476–1515

* @return the name of a core dump file * * @param reuseExisting whether to reuse an existing file at the location of a core file; * if @c false, the existing file (if any) is removed and a new core dump is generated * * Call RETURN_IF_TEST_RESOLVED() after this function. */

 * Call RETURN_IF_TEST_RESOLVED() after this function.
 */
[[nodiscard]] static QString generateCoreFile(bool reuseExisting)
{
    QFileInfo f("core");
    f.setCaching(false); // don't cache information
    if (f.exists()) {
        if (reuseExisting) {
            qDebug() << "reusing an existing core file";
            return f.canonicalFilePath();
        }
        qDebug() << "removing an existing core file to generate a new one";
        QVERIFY_RETURN(QFile::remove(f.canonicalFilePath()), QString{});
    }

    KProcess debugeeProcess;
    debugeeProcess.setOutputChannelMode(KProcess::MergedChannels);
    debugeeProcess << "bash" << "-c"
                   << "ulimit -c unlimited; " + findExecutable("debuggee_crash").toLocalFile();
    debugeeProcess.start();
    debugeeProcess.waitForFinished();
    qDebug() << "Debuggee output:\n" << debugeeProcess.readAll();

    auto coreFileFound = f.exists();
    if (!coreFileFound) {
        qDebug() << "try to use coredumpctl";
        const auto coredumpctl = QStandardPaths::findExecutable("coredumpctl");
        if (!coredumpctl.isEmpty()) {
            KProcess::execute(coredumpctl, {"-1", "-o", f.absoluteFilePath(), "dump", "debuggee_crash"}, 5000);
            // coredumpctl seems to create an empty file "core" even if no cores can be delivered
            // (like when run inside docker containers as on KDE CI or with kernel.core_pattern=|/dev/null)
            // so also check for size != 0
            coreFileFound = f.exists() && (f.size() > 0);
        }
    }
    if (!coreFileFound) {
        QSKIP_RETURN("No core dump found, check your system configuration (see /proc/sys/kernel/core_pattern)",
                     QString{});
    }

    return f.canonicalFilePath();
}

void DebuggerTestBase::testCoreFile_data()
{