1 files changed, 50 insertions, 0 deletions
diff --git a/libphobos/testsuite/libphobos.thread/external_threads.d b/libphobos/testsuite/libphobos.thread/external_threads.d
new file mode 100644
index 00000000000..9c98a3fa13d
--- /dev/null
+++ b/libphobos/testsuite/libphobos.thread/external_threads.d
@@ -0,0 +1,50 @@
+import core.sys.posix.pthread;
+import core.memory;
+import core.thread;
+
+extern (C) void  rt_moduleTlsCtor();
+extern (C) void  rt_moduleTlsDtor();
+
+extern(C)
+void* entry_point1(void*)
+{
+    // try collecting - GC must ignore this call because this thread
+    // is not registered in runtime
+    GC.collect();
+    return null;
+}
+
+extern(C)
+void* entry_point2(void*)
+{
+    // This thread gets registered in druntime, does some work and gets
+    // unregistered to be cleaned up manually
+    thread_attachThis();
+    rt_moduleTlsCtor();
+
+    auto x = new int[10];
+
+    rt_moduleTlsDtor();
+    thread_detachThis();
+    return null;
+}
+
+void main()
+{
+    // allocate some garbage
+    auto x = new int[1000];
+
+    {
+        pthread_t thread;
+        auto status = pthread_create(&thread, null, &entry_point1, null);
+        assert(status == 0);
+        pthread_join(thread, null);
+    }
+
+    {
+        pthread_t thread;
+        auto status = pthread_create(&thread, null, &entry_point2, null);
+        assert(status == 0);
+        pthread_join(thread, null);
+    }
+}