Add the clang library to the repo (with some of my changes, too).

1 files changed, 164 insertions, 0 deletions

diff --git a/clang/test/SemaTemplate/deduction.cpp b/clang/test/SemaTemplate/deduction.cpp
new file mode 100644
index 0000000..aecb5ee
--- /dev/null
+++ b/clang/test/SemaTemplate/deduction.cpp
@@ -0,0 +1,164 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+// Template argument deduction with template template parameters.
+template<typename T, template<T> class A> 
+struct X0 {
+  static const unsigned value = 0;
+};
+
+template<template<int> class A>
+struct X0<int, A> {
+  static const unsigned value = 1;
+};
+
+template<int> struct X0i;
+template<long> struct X0l;
+int array_x0a[X0<long, X0l>::value == 0? 1 : -1];
+int array_x0b[X0<int, X0i>::value == 1? 1 : -1];
+
+template<typename T, typename U>
+struct is_same {
+  static const bool value = false;
+};
+
+template<typename T>
+struct is_same<T, T> {
+  static const bool value = true;
+};
+
+template<typename T> struct allocator { };
+template<typename T, typename Alloc = allocator<T> > struct vector {};
+
+// Fun with meta-lambdas!
+struct _1 {};
+struct _2 {};
+
+// Replaces all occurrences of _1 with Arg1 and _2 with Arg2 in T.
+template<typename T, typename Arg1, typename Arg2>
+struct Replace {
+  typedef T type;
+};
+
+// Replacement of the whole type.
+template<typename Arg1, typename Arg2>
+struct Replace<_1, Arg1, Arg2> {
+  typedef Arg1 type;
+};
+
+template<typename Arg1, typename Arg2>
+struct Replace<_2, Arg1, Arg2> {
+  typedef Arg2 type;
+};
+
+// Replacement through cv-qualifiers
+template<typename T, typename Arg1, typename Arg2>
+struct Replace<const T, Arg1, Arg2> {
+  typedef typename Replace<T, Arg1, Arg2>::type const type;
+};
+
+// Replacement of templates
+template<template<typename> class TT, typename T1, typename Arg1, typename Arg2>
+struct Replace<TT<T1>, Arg1, Arg2> {
+  typedef TT<typename Replace<T1, Arg1, Arg2>::type> type;
+};
+
+template<template<typename, typename> class TT, typename T1, typename T2,
+         typename Arg1, typename Arg2>
+struct Replace<TT<T1, T2>, Arg1, Arg2> {
+  typedef TT<typename Replace<T1, Arg1, Arg2>::type,
+             typename Replace<T2, Arg1, Arg2>::type> type;
+};
+
+// Just for kicks...
+template<template<typename, typename> class TT, typename T1,
+         typename Arg1, typename Arg2>
+struct Replace<TT<T1, _2>, Arg1, Arg2> {
+  typedef TT<typename Replace<T1, Arg1, Arg2>::type, Arg2> type;
+};
+
+int array0[is_same<Replace<_1, int, float>::type, int>::value? 1 : -1];
+int array1[is_same<Replace<const _1, int, float>::type, const int>::value? 1 : -1];
+int array2[is_same<Replace<vector<_1>, int, float>::type, vector<int> >::value? 1 : -1];
+int array3[is_same<Replace<vector<const _1>, int, float>::type, vector<const int> >::value? 1 : -1];
+int array4[is_same<Replace<vector<int, _2>, double, float>::type, vector<int, float> >::value? 1 : -1];
+
+// PR5911
+template <typename T, int N> void f(const T (&a)[N]);
+int iarr[] = { 1 };
+void test_PR5911() { f(iarr); }
+
+// Must not examine base classes of incomplete type during template argument
+// deduction.
+namespace PR6257 {
+  template <typename T> struct X {
+    template <typename U> X(const X<U>& u);
+  };
+  struct A;
+  void f(A& a);
+  void f(const X<A>& a);
+  void test(A& a) { (void)f(a); }
+}
+
+// PR7463
+namespace PR7463 {
+  const int f ();
+  template <typename T_> void g (T_&); // expected-note{{T_ = int}}
+  void h (void) { g(f()); } // expected-error{{no matching function for call}}
+}
+
+namespace test0 {
+  template <class T> void make(const T *(*fn)()); // expected-note {{candidate template ignored: can't deduce a type for 'T' which would make 'const T' equal 'char'}}
+  char *char_maker();
+  void test() {
+    make(char_maker); // expected-error {{no matching function for call to 'make'}}
+  }
+}
+
+namespace test1 {
+  template<typename T> void foo(const T a[3][3]);
+  void test() {
+    int a[3][3];
+    foo(a);
+  }
+}
+
+// PR7708
+namespace test2 {
+  template<typename T> struct Const { typedef void const type; };
+
+  template<typename T> void f(T, typename Const<T>::type*);
+  template<typename T> void f(T, void const *);
+
+  void test() {
+    void *p = 0;
+    f(0, p);
+  }
+}
+
+// rdar://problem/8537391
+namespace test3 {
+  struct Foo {
+    template <void F(char)> static inline void foo();
+  };
+
+  class Bar {
+    template<typename T> static inline void wobble(T ch);
+
+  public:
+    static void madness() {
+      Foo::foo<wobble<char> >();
+    }
+  };
+}
+
+// Verify that we can deduce enum-typed arguments correctly.
+namespace test14 {
+  enum E { E0, E1 };
+  template <E> struct A {};
+  template <E e> void foo(const A<e> &a) {}
+
+  void test() {
+    A<E0> a;
+    foo(a);
+  }
+}