qt 6.5.1 original

tests/auto/corelib/io/qprocess-noapplication/CMakeLists.txt

@@ -0,0 +1,11 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## qprocess-noapplication Test:
+#####################################################################
+
+qt_internal_add_test(qprocess-noapplication
+    SOURCES
+        tst_qprocessnoapplication.cpp
+)

tests/auto/corelib/io/qprocess-noapplication/tst_qprocessnoapplication.cpp

@@ -0,0 +1,45 @@
+// Copyright (C) 2016 Intel Corporation.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QtCore/QCoreApplication>
+#include <QtCore/QProcess>
+#include <QtCore/QThread>
+#include <QTest>
+
+class tst_QProcessNoApplication : public QObject
+{
+    Q_OBJECT
+
+private Q_SLOTS:
+    void initializationDeadlock();
+};
+
+void tst_QProcessNoApplication::initializationDeadlock()
+{
+    // see QTBUG-27260
+    // QProcess on Unix uses (or used to, at the time of the writing of this test)
+    // a global class called QProcessManager.
+    // This class is instantiated (or was) only in the main thread, which meant that
+    // blocking the main thread while waiting for QProcess could mean a deadlock.
+
+    struct MyThread : public QThread
+    {
+        void run() override
+        {
+            // what we execute does not matter, as long as we try to
+            // and that the process exits
+            QProcess::execute("true");
+        }
+    };
+
+    char *argv[] = { const_cast<char*>(QTest::currentAppName()), 0 };
+    int argc = 1;
+    QCoreApplication app(argc, argv);
+    MyThread thread;
+    thread.start();
+    QVERIFY(thread.wait(10000));
+}
+
+QTEST_APPLESS_MAIN(tst_QProcessNoApplication)
+
+#include "tst_qprocessnoapplication.moc"