1 files changed, 59 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/gomp/udr-6.C b/gcc/testsuite/g++.dg/gomp/udr-6.C
new file mode 100644
index 00000000000..9060c87a542
--- /dev/null
+++ b/gcc/testsuite/g++.dg/gomp/udr-6.C
@@ -0,0 +1,59 @@
+// { dg-do compile }
+
+struct A { int a; A () : a (0) {} };
+struct B { int b; B () : b (0) {} };
+struct C : public A, B { int c; C () : c (0) {} };
+struct D { int d; D () : d (0) {} };
+struct E { int e; E () : e (0) {} };
+struct F : public D, E { int f; F () : f (0) {} };
+struct G : public C, F { int g; G () : g (0) {} };
+
+#pragma omp declare reduction (+: A : omp_out.a += omp_in.a) // { dg-message "operator" }
+#pragma omp declare reduction (+: B : omp_out.b += omp_in.b) // { dg-message "operator" }
+#pragma omp declare reduction (+: D : omp_out.d += omp_in.d)
+#pragma omp declare reduction (+: E : omp_out.e += omp_in.e)
+#pragma omp declare reduction (+: F : omp_out.f += omp_in.f) // { dg-message "operator" }
+
+void
+f1 ()
+{
+  G g;
+  #pragma omp parallel reduction (+: g)	// { dg-error "user defined reduction lookup is ambiguous" }
+  {
+    g.g++;
+  }
+}
+
+#pragma omp declare reduction (*: A : omp_out.a += omp_in.a)
+#pragma omp declare reduction (*: B : omp_out.b += omp_in.b)
+#pragma omp declare reduction (*: D : omp_out.d += omp_in.d)
+#pragma omp declare reduction (*: E : omp_out.e += omp_in.e)
+#pragma omp declare reduction (*: F : omp_out.f += omp_in.f)
+#pragma omp declare reduction (*: G : omp_out.g += omp_in.g)
+
+void
+f2 ()
+{
+  G g;
+  #pragma omp parallel reduction (*: g)
+  {
+    g.g++;
+  }
+}
+
+#pragma omp declare reduction (|: A : omp_out.a += omp_in.a)
+#pragma omp declare reduction (|: B : omp_out.b += omp_in.b)
+#pragma omp declare reduction (|: C : omp_out.c += omp_in.c) // { dg-message "operator" }
+#pragma omp declare reduction (|: D : omp_out.d += omp_in.d)
+#pragma omp declare reduction (|: E : omp_out.e += omp_in.e)
+#pragma omp declare reduction (|: F : omp_out.f += omp_in.f) // { dg-message "operator" }
+
+void
+f3 ()
+{
+  G g;
+  #pragma omp parallel reduction (|: g)	// { dg-error "user defined reduction lookup is ambiguous" }
+  {
+    g.g++;
+  }
+}