1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp1z/inh-ctor24.C b/gcc/testsuite/g++.dg/cpp1z/inh-ctor24.C
new file mode 100644
index 00000000000..21450196da0
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1z/inh-ctor24.C
@@ -0,0 +1,27 @@
+// Testcase from P0136
+// { dg-do compile { target c++11 } }
+// { dg-options -fnew-inheriting-ctors }
+
+struct A { A(int); };
+struct B : A { using A::A; };
+
+struct C1 : B { using B::B; };
+struct C2 : B { using B::B; };
+
+struct D1 : C1, C2 {
+  using C1::C1;
+  using C2::C2;
+};
+
+struct V1 : virtual B { using B::B; };
+struct V2 : virtual B { using B::B; };
+
+struct D2 : V1, V2 {
+  using V1::V1;
+  using V2::V2;
+};
+
+D1 d1(0); // { dg-error "" } ambiguous
+D2 d2(0); // OK: initializes virtual B base class, which initializes the A base
+          // class then initializes the V1 and V2 base classes as if by a
+          // defaulted default constructor