From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001
From: "Zancanaro; Carlo" <czan8762@plang3.cs.usyd.edu.au>
Date: Mon, 24 Sep 2012 09:58:17 +1000
Subject: Add the clang library to the repo (with some of my changes, too).

---
 clang/test/SemaTemplate/class-template-spec.cpp | 121 ++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 clang/test/SemaTemplate/class-template-spec.cpp

(limited to 'clang/test/SemaTemplate/class-template-spec.cpp')

diff --git a/clang/test/SemaTemplate/class-template-spec.cpp b/clang/test/SemaTemplate/class-template-spec.cpp
new file mode 100644
index 0000000..f9015b3
--- /dev/null
+++ b/clang/test/SemaTemplate/class-template-spec.cpp
@@ -0,0 +1,121 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+template<typename T, typename U = int> struct A; // expected-note {{template is declared here}} \
+                                                 // expected-note{{explicitly specialized}}
+
+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{{member access into incomplete type}}
+  (void)a2->x; // expected-error{{implicit instantiation of undefined template '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() { }
+
+// Make sure we can see specializations defined before the primary template.
+namespace N{ 
+  template<typename T> struct A0;
+}
+
+namespace N {
+  template<>
+  struct A0<void> {
+    typedef void* pointer;
+  };
+}
+
+namespace N {
+  template<typename T>
+  struct A0 {
+    void foo(A0<void>::pointer p = 0);
+  };
+}
+
+// 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{{explicitly specialized}}
+
+  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-warning{{C++11 extension}}
+
+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{{originally}}
+}
+
+template<> struct N::B<char> { 
+  int testf(int x) { return f(x); }
+};
+
+// PR5264
+template <typename T> class Foo;
+Foo<int>* v;
+Foo<int>& F() { return *v; }
+template <typename T> class Foo {};
+Foo<int> x;
+
+
+// Template template parameters
+template<template<class T> class Wibble>
+class Wibble<int> { }; // expected-error{{cannot specialize a template template parameter}}
+
+namespace rdar9676205 {
+  template<typename T>
+  struct X {
+    template<typename U>
+    struct X<U*> { // expected-error{{explicit specialization of 'X' in class scope}}
+    };
+  };
+
+}
-- 
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