1 files changed, 171 insertions, 0 deletions
diff --git a/test/Parser/cxx-ambig-init-templ.cpp b/test/Parser/cxx-ambig-init-templ.cpp
new file mode 100644
index 0000000..ac79f77
--- /dev/null
+++ b/test/Parser/cxx-ambig-init-templ.cpp
@@ -0,0 +1,171 @@
+// RUN: %clang_cc1 -Wno-uninitialized -std=c++11 -verify %s
+
+template<int> struct c { c(int) = delete; typedef void val; operator int() const; };
+
+int val;
+int foobar;
+struct S {
+  int k1 = a < b < c, d > ::val, e1;
+  int k2 = a < b, c < d > ::val, e2;
+  int k3 = b < a < c, d > ::val, e3;
+  int k4 = b < c, x, y = d > ::val, e4;
+  int k5 = T1 < b, &S::operator=(int); // expected-error {{extra qualification}}
+  int k6 = T2 < b, &S::operator= >::val;
+  int k7 = T1 < b, &S::operator>(int); // expected-error {{extra qualification}}
+  int k8 = T2 < b, &S::operator> >::val;
+  int k9 = T3 < a < b, c >> (d), e5 = 1 > (e4);
+  int k10 = 0 < T3 < a < b, c >> (d
+      ) // expected-error {{expected ';' at end of declaration}}
+      , a > (e4);
+  int k11 = 0 < 1, c<3>::*ptr;
+  int k12 = e < 0, int a<b<c>::* >(), e11;
+
+  void f1(
+    int k1 = a < b < c, d > ::val,
+    int k2 = b < a < c, d > ::val,
+    int k3 = b < c, int x = 0 > ::val,
+    int k4 = a < b, T3 < int > >(), // expected-error {{must be an expression}}
+    int k5 = a < b, c < d > ::val,
+    int k6 = a < b, c < d > (n) // expected-error {{undeclared identifier 'n'}}
+  );
+
+  void f2a(
+    // T3<int> here is a parameter type, so must be declared before it is used.
+    int k1 = c < b, T3 < int > x = 0 // expected-error {{unexpected end of default argument expression}}
+  );
+
+  template<typename, int=0> struct T3 { T3(int); operator int(); };
+
+  void f2b(
+    int k1 = c < b, T3 < int > x  = 0 // ok
+  );
+
+  // This is a one-parameter function. Ensure we don't typo-correct it to
+  //     int = a < b, c < foobar > ()
+  // ... which would be a function with two parameters.
+  int f3(int = a < b, c < goobar > ());
+  static constexpr int (S::*f3_test)(int) = &S::f3;
+
+  void f4(
+    int k1 = a<1,2>::val,
+    int missing_default // expected-error {{missing default argument on parameter}}
+  );
+
+  void f5(
+    int k1 = b < c,
+    int missing_default // expected-error {{missing default argument on parameter}}
+  );
+
+  void f6(
+    int k = b < c,
+    unsigned int (missing_default) // expected-error {{missing default argument on parameter}}
+  );
+
+  template<int, int=0> struct a { static const int val = 0; operator int(); }; // expected-note {{here}}
+  static const int b = 0, c = 1, d = 2, goobar = 3;
+  template<int, typename> struct e { operator int(); };
+
+  int mp1 = 0 < 1,
+      a<b<c,b<c>::*mp2,
+      mp3 = 0 > a<b<c>::val,
+      a<b<c,b<c>::*mp4 = 0,
+      a<b<c,b<c>::*mp5 {0},
+      a<b<c,b<c>::*mp6;
+
+  int np1 = e<0, int a<b<c,b<c>::*>();
+
+  static const int T1 = 4;
+  template<int, int &(S::*)(int)> struct T2 { static const int val = 0; };
+};
+
+namespace NoAnnotationTokens {
+  template<bool> struct Bool { Bool(int); };
+  static const bool in_class = false;
+
+  struct Test {
+    // Check we don't keep around a Bool<false> annotation token here.
+    int f(Bool<true> = X<Y, Bool<in_class> >(0));
+
+    // But it's OK if we do here.
+    int g(Bool<true> = Z<Y, Bool<in_class> = Bool<false>(0));
+
+    static const bool in_class = true;
+    template<int, typename U> using X = U;
+    static const int Y = 0, Z = 0;
+  };
+}
+
+namespace ImplicitInstantiation {
+  template<typename T> struct HasError { typename T::error error; }; // expected-error {{has no members}}
+
+  struct S {
+    // This triggers the instantiation of the outer HasError<int> during
+    // disambiguation, even though it uses the inner HasError<int>.
+    void f(int a = X<Y, HasError<int>::Z >()); // expected-note {{in instantiation of}}
+
+    template<typename, typename> struct X { operator int(); };
+    typedef int Y;
+    template<typename> struct HasError { typedef int Z; };
+  };
+
+  HasError<int> hei;
+}
+
+namespace CWG325 {
+  template <int A, typename B> struct T { static int i; operator int(); };
+  class C {
+    int Foo (int i = T<1, int>::i);
+  };
+
+  class D {
+    int Foo (int i = T<1, int>::i);
+    template <int A, typename B> struct T {static int i;};
+  };
+
+  const int a = 0;
+  typedef int b;
+  T<a,b> c;
+  struct E {
+    int n = T<a,b>(c);
+  };
+}
+
+namespace Operators {
+  struct Y {};
+  constexpr int operator,(const Y&, const Y&) { return 8; }
+  constexpr int operator>(const Y&, const Y&) { return 8; }
+  constexpr int operator<(const Y&, const Y&) { return 8; }
+  constexpr int operator>>(const Y&, const Y&) { return 8; }
+
+  struct X {
+    typedef int (*Fn)(const Y&, const Y&);
+
+    Fn a = operator,, b = operator<, c = operator>;
+    void f(Fn a = operator,, Fn b = operator<, Fn c = operator>);
+
+    int k1 = T1<0, operator<, operator>, operator<>::val, l1;
+    int k2 = T1<0, operator>, operator,, operator,>::val, l2;
+    int k3 = T2<0, operator,(Y{}, Y{}),  operator<(Y{}, Y{})>::val, l3;
+    int k4 = T2<0, operator>(Y{}, Y{}),  operator,(Y{}, Y{})>::val, l4;
+    int k5 = T3<0, operator>>>::val, l5;
+    int k6 = T4<0, T3<0, operator>>>>::val, l6;
+
+    template<int, Fn, Fn, Fn> struct T1 { enum { val }; };
+    template<int, int, int> struct T2 { enum { val }; };
+    template<int, Fn> struct T3 { enum { val }; };
+    template<int, typename T> struct T4 : T {};
+  };
+}
+
+namespace ElaboratedTypeSpecifiers {
+  struct S {
+    int f(int x = T<a, struct S>());
+    int g(int x = T<a, class __declspec() C>());
+    int h(int x = T<a, union __attribute__(()) U>());
+    int i(int x = T<a, enum E>());
+    int j(int x = T<a, struct S::template T<0, enum E>>());
+    template <int, typename> struct T { operator int(); };
+    static const int a = 0;
+    enum E {};
+  };
+}