1 files changed, 133 insertions, 0 deletions
diff --git a/clang/test/SemaTemplate/instantiate-exception-spec-cxx11.cpp b/clang/test/SemaTemplate/instantiate-exception-spec-cxx11.cpp
new file mode 100644
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+++ b/clang/test/SemaTemplate/instantiate-exception-spec-cxx11.cpp
@@ -0,0 +1,133 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -ftemplate-depth 16 -fcxx-exceptions -fexceptions %s
+
+// DR1330: an exception specification for a function template is only
+// instantiated when it is needed.
+
+template<typename T> void f1(T*) throw(T); // expected-error{{incomplete type 'Incomplete' is not allowed in exception specification}}
+struct Incomplete; // expected-note{{forward}}
+
+void test_f1(Incomplete *incomplete_p, int *int_p) {
+  f1(int_p);
+  f1(incomplete_p); // expected-note{{instantiation of exception spec}}
+}
+
+template<typename T> struct A {
+  template<typename U> struct B {
+    static void f() noexcept(A<U>().n);
+  };
+
+  constexpr A() : n(true) {}
+  bool n;
+};
+
+static_assert(noexcept(A<int>::B<char>::f()), "");
+
+template<unsigned N> struct S {
+  static void recurse() noexcept(noexcept(S<N+1>::recurse())); // \
+  // expected-error {{no member named 'recurse'}} \
+  // expected-note 9{{instantiation of exception spec}}
+};
+decltype(S<0>::recurse()) *pVoid1 = 0; // ok, exception spec not needed
+decltype(&S<0>::recurse) pFn = 0; // ok, exception spec not needed
+
+template<> struct S<10> {};
+void (*pFn2)() noexcept = &S<0>::recurse; // expected-note {{instantiation of exception spec}} expected-error {{not superset}}
+
+
+template<typename T> T go(T a) noexcept(noexcept(go(a))); // \
+// expected-error 16{{call to function 'go' that is neither visible}} \
+// expected-note 16{{'go' should be declared prior to the call site}} \
+// expected-error {{recursive template instantiation exceeded maximum depth of 16}} \
+// expected-error {{use of undeclared identifier 'go'}} \
+
+void f() {
+  int k = go(0); // \
+  // expected-note {{in instantiation of exception specification for 'go<int>' requested here}}
+}
+
+
+namespace dr1330_example {
+  template <class T> struct A {
+    void f(...) throw (typename T::X); // expected-error {{'int'}}
+    void f(int);
+  };
+
+  int main() {
+    A<int>().f(42);
+  }
+
+  int test2() {
+    struct S {
+      template<typename T>
+      static int f() noexcept(noexcept(A<T>().f("boo!"))) { return 0; } // \
+      // expected-note {{instantiation of exception spec}}
+      typedef decltype(f<S>()) X;
+    };
+    S().f<S>(); // ok
+    S().f<int>(); // expected-note {{instantiation of exception spec}}
+  }
+}
+
+namespace core_19754_example {
+  template<typename T> T declval() noexcept;
+
+  template<typename T, typename = decltype(T(declval<T&&>()))>
+  struct is_movable { static const bool value = true; };
+
+  template<typename T>
+  struct wrap {
+    T val;
+    void irrelevant(wrap &p) noexcept(is_movable<T>::value);
+  };
+
+  template<typename T>
+  struct base {
+     base() {}
+     base(const typename T::type1 &);
+     base(const typename T::type2 &);
+  };
+
+  template<typename T>
+  struct type1 {
+     wrap<typename T::base> base;
+  };
+
+  template<typename T>
+  struct type2 {
+     wrap<typename T::base> base;
+  };
+
+  struct types {
+     typedef base<types> base;
+     typedef type1<types> type1;
+     typedef type2<types> type2;
+  };
+
+  base<types> val = base<types>();
+}
+
+namespace pr9485 {
+  template <typename T> void f1(T) throw(typename T::exception); // expected-note {{candidate}}
+  template <typename T> void f1(T, int = 0) throw(typename T::noitpecxe); // expected-note {{candidate}}
+
+  template <typename T> void f2(T) noexcept(T::throws); // expected-note {{candidate}}
+  template <typename T> void f2(T, int = 0) noexcept(T::sworht); // expected-note {{candidate}}
+
+  void test() {
+    f1(0); // expected-error {{ambiguous}}
+    f2(0); // expected-error {{ambiguous}}
+  }
+}
+
+struct Exc1 { char c[4]; };
+struct Exc2 { double x, y, z; };
+struct Base {
+  virtual void f() noexcept; // expected-note {{overridden}}
+};
+template<typename T> struct Derived : Base {
+  void f() noexcept (sizeof(T) == 4); // expected-error {{is more lax}}
+  void g() noexcept (T::error);
+};
+
+Derived<Exc1> d1; // ok
+Derived<Exc2> d2; // expected-note {{in instantiation of}}