--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libgomp/testsuite/libgomp.c/udr-2.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,27 @@
+/* { dg-do run } */
+
+extern void abort ();
+
+struct S { int s; };
+
+#pragma omp declare reduction (+:struct S:omp_out.s += omp_in.s)
+#pragma omp declare reduction (foo:struct S:omp_out.s += omp_in.s)
+#pragma omp declare reduction (foo:int:omp_out += omp_in)
+
+int
+main ()
+{
+  int u = 0, q = 0;
+  struct S s, t;
+  s.s = 0; t.s = 0;
+  #pragma omp parallel reduction(+:s, q) reduction(foo:t, u)
+  {
+    if (s.s != 0 || t.s != 0 || u != 0 || q != 0) abort ();
+    s.s = 6;
+    t.s = 8;
+    u = 9;
+    q++;
+  }
+  if (s.s != 6 * q || t.s != 8 * q || u != 9 * q) abort ();
+  return 0;
+}