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diff --git a/libgomp/testsuite/libgomp.c++/ctor-6.C b/libgomp/testsuite/libgomp.c++/ctor-6.C
new file mode 100644
index 00000000..eab74e08
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c++/ctor-6.C
@@ -0,0 +1,50 @@
+// { dg-do run }
+
+#include <omp.h>
+#include <assert.h>
+
+struct B
+{
+  static int count;
+  static B *expected;
+
+  B& operator=(const B &);
+};
+
+int B::count;
+B * B::expected;
+
+B& B::operator= (const B &b)
+{
+  assert (&b == expected);
+  assert (this != expected);
+  #pragma omp atomic
+    count++;
+  return *this;
+}
+
+static int nthreads;
+
+void foo()
+{
+  #pragma omp parallel
+    {
+      B b;
+      #pragma omp single copyprivate(b)
+	{
+	  nthreads = omp_get_num_threads ();
+	  B::expected = &b;
+	}
+    }
+}
+
+int main()
+{
+  omp_set_dynamic (0);
+  omp_set_num_threads (4);
+  foo();
+
+  assert (B::count == nthreads-1);
+
+  return 0;
+}