qt 6.5.1 original

tests/auto/network/socket/qtcpserver/crashingServer/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## crashingServer Binary:
+#####################################################################
+
+qt_internal_add_executable(crashingServer
+    OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/"
+    SOURCES
+        main.cpp
+    LIBRARIES
+        Qt::Network
+)
+
+## Scopes:
+#####################################################################

tests/auto/network/socket/qtcpserver/crashingServer/main.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+
+#include <QtCore>
+#include <QtNetwork>
+#if defined(Q_OS_WIN) && defined(Q_CC_MSVC)
+#  include <crtdbg.h>
+#endif
+#ifdef Q_OS_UNIX
+#  include <sys/resource.h>
+#  include <unistd.h>
+#endif
+
+int main(int argc, char *argv[])
+{
+#if defined(Q_OS_WIN) && defined(Q_CC_MSVC)
+    // Windows: Suppress crash notification dialog.
+    _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_DEBUG);
+#elif defined(RLIMIT_CORE)
+    // Unix: set our core dump limit to zero to request no dialogs.
+    if (struct rlimit rlim; getrlimit(RLIMIT_CORE, &rlim) == 0) {
+        rlim.rlim_cur = 0;
+        setrlimit(RLIMIT_CORE, &rlim);
+    }
+#endif
+
+    QCoreApplication app(argc, argv);
+    if (argc < 1) {
+        fprintf(stderr, "Need a port number\n");
+        return 1;
+    }
+
+    int port = QByteArrayView(argv[1]).toInt();
+    QTcpServer server;
+    if (!server.listen(QHostAddress::LocalHost, port)) {
+        fprintf(stderr, "Failed to listen: %s\n", server.errorString().toLatin1().constData());
+        if (server.serverError() == QTcpSocket::AddressInUseError) {
+            // let's see if we can find the process that would be holding this
+            // still open
+#ifdef Q_OS_LINUX
+            static const char *ss_args[] = {
+                "ss", "-nap", "sport", "=", argv[1], nullptr
+            };
+            dup2(STDERR_FILENO, STDOUT_FILENO);
+            execvp(ss_args[0], const_cast<char **>(ss_args));
+#endif
+        }
+        return 1;
+    }
+
+    printf("Listening\n");
+    fflush(stdout);
+
+    server.waitForNewConnection(5000);
+    qFatal("Crash");
+    return 0;
+}