1 files changed, 74 insertions, 0 deletions
diff --git a/test/CXX/dcl.dcl/dcl.spec/dcl.constexpr/p6.cpp b/test/CXX/dcl.dcl/dcl.spec/dcl.constexpr/p6.cpp
new file mode 100644
index 000000000000..e383bc09226c
--- /dev/null
+++ b/test/CXX/dcl.dcl/dcl.spec/dcl.constexpr/p6.cpp
@@ -0,0 +1,74 @@
+// RUN: %clang_cc1 -verify -std=c++11 %s
+
+namespace N {
+  typedef char C;
+}
+
+namespace M {
+  typedef double D;
+}
+
+struct NonLiteral {
+  NonLiteral() {}
+  NonLiteral(int) {}
+  operator int() const { return 0; }
+};
+struct Literal {
+  constexpr Literal() {}
+  operator int() const { return 0; }
+};
+
+struct S {
+  virtual int ImplicitlyVirtual();
+};
+struct T {};
+
+template<typename T> struct ImplicitVirtualFromDependentBase : T {
+  constexpr int ImplicitlyVirtual() { return 0; }
+};
+
+// FIXME: Can't test this until we have function invocation substitution
+#if 0
+constexpr int a = ImplicitVirtualFromDependentBase<S>().ImplicitlyVirtual(); // desired-error {{not a constant expression}}
+constexpr int b = ImplicitVirtualFromDependentBase<T>().ImplicitlyVirtual(); // ok
+#endif
+
+template<typename R> struct ConstexprMember {
+  constexpr R F() { return 0; }
+};
+// FIXME: Can't test this until we have function invocation substitution
+#if 0
+constexpr int c = ConstexprMember<int>().F(); // ok
+constexpr int d = ConstexprMember<NonLiteral>().F(); // desired-error {{not a constant expression}}
+#endif
+
+template<typename ...P> struct ConstexprCtor { // expected-note 2{{no constexpr constructors}}
+  constexpr ConstexprCtor(P...); // expected-note {{constructor template instantiation is not constexpr because 1st parameter type 'NonLiteral' is not a literal type}} \
+                                    expected-note {{constructor template instantiation is not constexpr because 2nd parameter type 'NonLiteral' is not a literal type}}
+};
+constexpr ConstexprCtor<> f1(); // ok
+constexpr ConstexprCtor<int> f2(); // ok
+constexpr ConstexprCtor<NonLiteral> f3(); // expected-error {{not a literal type}}
+constexpr ConstexprCtor<int, NonLiteral> f4(); // expected-error {{not a literal type}}
+
+struct VirtBase : virtual S {}; // expected-note {{here}}
+
+namespace TemplateVBase {
+  template<typename T> struct T1 : virtual Literal { // expected-note {{here}}
+    constexpr T1(); // expected-error {{constexpr constructor not allowed in struct with virtual base class}}
+  };
+
+  template<typename T> struct T2 : virtual T { // expected-note {{struct with virtual base class is not a literal type}} expected-note {{here}}
+    // FIXME: This is ill-formed (no diagnostic required).
+    // We should diagnose it now rather than waiting until instantiation.
+    constexpr T2(); // desired-error {{constexpr constructor not allowed in class with virtual base classes}}
+  };
+  constexpr T2<Literal> g2(); // expected-error {{not a literal type}}
+
+  template<typename T> class T3 : public T { // expected-note {{class with virtual base class is not a literal type}}
+  public:
+    constexpr T3() {}
+  };
+  constexpr T3<Literal> g3(); // ok
+  constexpr T3<VirtBase> g4(); // expected-error {{not a literal type}}
+}