1 files changed, 80 insertions, 0 deletions
diff --git a/test/SemaTemplate/class-template-spec.cpp b/test/SemaTemplate/class-template-spec.cpp
new file mode 100644
index 0000000..71d8ea1
--- /dev/null
+++ b/test/SemaTemplate/class-template-spec.cpp
@@ -0,0 +1,80 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+template<typename T, typename U = int> struct A; // expected-note 2{{template is declared here}}
+
+template<> struct A<double, double>; // expected-note{{forward declaration}}
+
+template<> struct A<float, float> {  // expected-note{{previous definition}}
+  int x;
+};
+
+template<> struct A<float> { // expected-note{{previous definition}}
+  int y;
+};
+
+int test_specs(A<float, float> *a1, A<float, int> *a2) {
+  return a1->x + a2->y;
+}
+
+int test_incomplete_specs(A<double, double> *a1, 
+                          A<double> *a2)
+{
+  (void)a1->x; // expected-error{{incomplete definition of type 'A<double, double>'}}
+  (void)a2->x; // expected-error{{implicit instantiation of undefined template 'struct A<double, int>'}}
+}
+
+typedef float FLOAT;
+
+template<> struct A<float, FLOAT>;
+
+template<> struct A<FLOAT, float> { }; // expected-error{{redefinition}}
+
+template<> struct A<float, int> { }; // expected-error{{redefinition}}
+
+template<typename T, typename U = int> struct X;
+
+template <> struct X<int, int> { int foo(); }; // #1
+template <> struct X<float> { int bar(); };  // #2
+
+typedef int int_type;
+void testme(X<int_type> *x1, X<float, int> *x2) { 
+  (void)x1->foo(); // okay: refers to #1
+  (void)x2->bar(); // okay: refers to #2
+}
+
+// Make sure specializations are proper classes.
+template<>
+struct A<char> {
+  A();
+};
+
+A<char>::A() { }
+
+// Diagnose specialization errors
+struct A<double> { }; // expected-error{{template specialization requires 'template<>'}}
+
+template<> struct ::A<double>;
+
+namespace N {
+  template<typename T> struct B; // expected-note 2{{template is declared here}}
+
+  template<> struct ::N::B<char>; // okay
+  template<> struct ::N::B<short>; // okay
+  template<> struct ::N::B<int>; // okay
+
+  int f(int);
+}
+
+template<> struct N::B<int> { }; // okay
+
+template<> struct N::B<float> { }; // expected-error{{class template specialization of 'B' not in namespace 'N'}}
+
+namespace M {
+  template<> struct ::N::B<short> { }; // expected-error{{class template specialization of 'B' not in a namespace enclosing 'N'}}
+
+  template<> struct ::A<long double>; // expected-error{{class template specialization of 'A' must occur in the global scope}}
+}
+
+template<> struct N::B<char> { 
+  int testf(int x) { return f(x); }
+};
+