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diff --git a/libgomp/testsuite/libgomp.c++/atomic-1.C b/libgomp/testsuite/libgomp.c++/atomic-1.C
new file mode 100644
index 00000000..73f6e7c4
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c++/atomic-1.C
@@ -0,0 +1,53 @@
+// PR c++/33894
+// { dg-do run }
+// { dg-options "-O2" }
+
+extern "C" void abort ();
+
+int check;
+
+template<typename T> void
+foo ()
+{
+  #pragma omp atomic
+  check |= sizeof (T);
+}
+
+template<typename T> void
+bar (T *x, T y)
+{
+  #pragma omp atomic
+  *x += y;
+}
+
+template<typename T> void
+baz ()
+{
+  #pragma omp atomic
+  check++;
+}
+
+int
+main ()
+{
+  int i = 0;
+  long l = 0;
+
+  check = 0;
+  foo<char> ();
+  if (check != sizeof (char))
+    abort ();
+  foo<short> ();
+  if (check != (sizeof (char) | sizeof (short)))
+    abort ();
+  bar(&i, 4);
+  bar(&l, 8L);
+  if (i != 4 || l != 8L)
+    abort ();
+  baz<char> ();
+  if (check != (sizeof (char) | sizeof (short)) + 1)
+    abort ();
+  baz<long double> ();
+  if (check != (sizeof (char) | sizeof (short)) + 2)
+    abort ();
+}