Merge branch 'master' of ssh://bitbucket.org/czan/honours

5 files changed, 437 insertions, 0 deletions

diff --git a/clang/test/CXX/class.access/class.friend/p1.cpp b/clang/test/CXX/class.access/class.friend/p1.cpp
new file mode 100644
index 0000000..68ff83f
--- /dev/null
+++ b/clang/test/CXX/class.access/class.friend/p1.cpp
@@ -0,0 +1,356 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+// C++'0x [class.friend] p1:
+//   A friend of a class is a function or class that is given permission to use
+//   the private and protected member names from the class. A class specifies
+//   its friends, if any, by way of friend declarations. Such declarations give
+//   special access rights to the friends, but they do not make the nominated
+//   friends members of the befriending class.
+
+struct S { static void f(); };
+S* g() { return 0; }
+
+struct X {
+  friend struct S;
+  friend S* g();
+};
+
+void test1() {
+  S s;
+  g()->f();
+  S::f();
+  X::g(); // expected-error{{no member named 'g' in 'X'}}
+  X::S x_s; // expected-error{{no member named 'S' in 'X'}}
+  X x;
+  x.g(); // expected-error{{no member named 'g' in 'X'}}
+}
+
+// Test that we recurse through namespaces to find already declared names, but
+// new names are declared within the enclosing namespace.
+namespace N {
+  struct X {
+    friend struct S;
+    friend S* g();
+
+    friend struct S2;
+    friend struct S2* g2();
+  };
+
+  struct S2 { static void f2(); };
+  S2* g2() { return 0; }
+
+  void test() {
+    g()->f();
+    S s;
+    S::f();
+    X::g(); // expected-error{{no member named 'g' in 'N::X'}}
+    X::S x_s; // expected-error{{no member named 'S' in 'N::X'}}
+    X x;
+    x.g(); // expected-error{{no member named 'g' in 'N::X'}}
+
+    g2();
+    S2 s2;
+    ::g2(); // expected-error{{no member named 'g2' in the global namespace}}
+    ::S2 g_s2; // expected-error{{no member named 'S2' in the global namespace}}
+    X::g2(); // expected-error{{no member named 'g2' in 'N::X'}}
+    X::S2 x_s2; // expected-error{{no member named 'S2' in 'N::X'}}
+    x.g2(); // expected-error{{no member named 'g2' in 'N::X'}}
+  }
+}
+
+namespace test0 {
+  class ClassFriend {
+    void test();
+  };
+
+  class MemberFriend {
+    void test();
+  };
+
+  void declared_test();
+
+  class Class {
+    static void member(); // expected-note 2 {{declared private here}}
+
+    friend class ClassFriend;
+    friend class UndeclaredClassFriend;
+
+    friend void undeclared_test();
+    friend void declared_test();
+    friend void MemberFriend::test();
+  };
+
+  void declared_test() {
+    Class::member();
+  }
+
+  void undeclared_test() {
+    Class::member();
+  }
+
+  void unfriended_test() {
+    Class::member(); // expected-error {{'member' is a private member of 'test0::Class'}}
+  }
+
+  void ClassFriend::test() {
+    Class::member();
+  }
+
+  void MemberFriend::test() {
+    Class::member();
+  }
+
+  class UndeclaredClassFriend {
+    void test() {
+      Class::member();
+    }
+  };
+
+  class ClassNonFriend {
+    void test() {
+      Class::member(); // expected-error {{'member' is a private member of 'test0::Class'}}
+    }
+  };
+}
+
+// Make sure that friends have access to inherited protected members.
+namespace test2 {
+  struct X;
+
+  class ilist_half_node {
+    friend struct ilist_walker_bad;
+    X *Prev;
+  protected:
+    X *getPrev() { return Prev; } // expected-note{{member is declared here}}
+  };
+
+  class ilist_node : private ilist_half_node { // expected-note {{declared private here}} expected-note {{constrained by private inheritance here}}
+    friend struct ilist_walker;
+    X *Next;
+    X *getNext() { return Next; } // expected-note {{declared private here}}
+  };
+
+  struct X : ilist_node {};
+
+  struct ilist_walker {
+    static X *getPrev(X *N) { return N->getPrev(); }
+    static X *getNext(X *N) { return N->getNext(); }
+  };  
+
+  struct ilist_walker_bad {
+    static X *getPrev(X *N) { return N->getPrev(); } // \
+    // expected-error {{'getPrev' is a private member of 'test2::ilist_half_node'}} \
+    // expected-error {{cannot cast 'test2::X' to its private base class 'test2::ilist_half_node'}}
+
+    static X *getNext(X *N) { return N->getNext(); } // \
+    // expected-error {{'getNext' is a private member of 'test2::ilist_node'}}
+  };  
+}
+
+namespace test3 {
+  class A { protected: int x; }; // expected-note {{declared protected here}}
+
+  class B : public A {
+    friend int foo(B*);
+  };
+
+  int foo(B *p) {
+    return p->x;
+  }
+
+  int foo(const B *p) {
+    return p->x; // expected-error {{'x' is a protected member of 'test3::A'}}
+  }
+}
+
+namespace test3a {
+  class A { protected: int x; };
+
+  class B : public A {
+    friend int foo(B*);
+  };
+
+  int foo(B * const p) {
+    return p->x;
+  }
+}
+
+namespace test4 {
+  template <class T> class Holder {
+    T object;
+    friend bool operator==(Holder &a, Holder &b) {
+      return a.object == b.object; // expected-error {{invalid operands to binary expression}}
+    }
+  };
+
+  struct Inequal {};
+  bool test() {
+    Holder<Inequal> a, b;
+    return a == b;  // expected-note {{requested here}}
+  }
+}
+
+
+// PR6174
+namespace test5 {
+  namespace ns {
+    class A;
+  }
+
+  class ns::A {
+  private: int x;
+    friend class B;
+  };
+
+  namespace ns {
+    class B {
+      int test(A *p) { return p->x; }
+    };
+  }
+}
+
+// PR6207
+namespace test6 {
+  struct A {};
+
+  struct B {
+    friend A::A();
+    friend A::~A();
+    friend A &A::operator=(const A&);
+  };
+}
+
+namespace test7 {
+  template <class T> struct X {
+    X();
+    ~X();
+    void foo();
+    void bar();
+  };
+
+  class A {
+    friend void X<int>::foo();
+    friend X<int>::X();
+    friend X<int>::X(const X&);
+
+  private:
+    A(); // expected-note 2 {{declared private here}}
+  };
+
+  template<> void X<int>::foo() {
+    A a;
+  }
+
+  template<> void X<int>::bar() {
+    A a; // expected-error {{calling a private constructor}}
+  }
+
+  template<> X<int>::X() {
+    A a;
+  }
+
+  template<> X<int>::~X() {
+    A a; // expected-error {{calling a private constructor}}
+  }
+}
+
+// Return types, parameters and default arguments to friend functions.
+namespace test8 {
+  class A {
+    typedef int I; // expected-note 4 {{declared private here}}
+    static const I x = 0; // expected-note {{implicitly declared private here}}
+    friend I f(I i);
+    template<typename T> friend I g(I i);
+  };
+
+  const A::I A::x;
+  A::I f(A::I i = A::x) {}
+  template<typename T> A::I g(A::I i) {
+    T t;
+  }
+  template A::I g<A::I>(A::I i);
+
+  A::I f2(A::I i = A::x) {} // expected-error 3 {{is a private member of}}
+  template<typename T> A::I g2(A::I i) { // expected-error 2 {{is a private member of}}
+    T t;
+  }
+  template A::I g2<A::I>(A::I i);
+}
+
+// PR6885
+namespace test9 {
+  class B {
+    friend class test9;
+  };
+}
+
+// PR7230
+namespace test10 {
+  extern "C" void f(void);
+  extern "C" void g(void);
+
+  namespace NS {
+    class C {
+      void foo(void); // expected-note {{declared private here}}
+      friend void test10::f(void);
+    };
+    static C* bar;
+  }
+
+  void f(void) {
+    NS::bar->foo();
+  }
+
+  void g(void) {
+    NS::bar->foo(); // expected-error {{private member}}
+  }
+}
+
+// PR8705
+namespace test11 {
+  class A {
+    void test0(int);
+    void test1(int);
+    void test2(int);
+    void test3(int);
+  };
+
+  class B {
+    typedef int private_type; // expected-note 2 {{implicitly declared private here}}
+    friend void A::test0(int);
+    friend void A::test1(int);
+  };
+
+  void A::test0(B::private_type x) {}
+  void A::test1(int x = B::private_type()) {}
+  void A::test2(B::private_type x) {} // expected-error {{'private_type' is a private member of 'test11::B'}}
+  void A::test3(int x = B::private_type()) {} // expected-error {{'private_type' is a private member of 'test11::B'}}
+}
+
+
+// PR9221
+namespace test12 {
+  struct A {
+    void foo();
+  };
+  class B : private A {
+    friend void A::foo();
+    void *mem;
+  };
+  void A::foo() {
+    void *var = static_cast<B*>(this)->mem;
+  }
+}
+
+namespace PR9103 {
+  struct base {
+  protected:
+    static void foo(void) {}
+  };
+
+  struct cls: base {
+    friend void bar(void) {
+      base::foo();
+    }
+  };
+}
diff --git a/clang/test/CXX/class.access/class.friend/p11.cpp b/clang/test/CXX/class.access/class.friend/p11.cpp
new file mode 100644
index 0000000..a05b2d2
--- /dev/null
+++ b/clang/test/CXX/class.access/class.friend/p11.cpp
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+// rdar://problem/8540720
+namespace test0 {
+  void foo() {
+    void bar();
+    class A {
+      friend void bar();
+    };
+  }
+}
+
+namespace test1 {
+  void foo() {
+    class A {
+      friend void bar(); // expected-error {{no matching function found in local scope}}
+    };
+  }
+}
diff --git a/clang/test/CXX/class.access/class.friend/p2-cxx03.cpp b/clang/test/CXX/class.access/class.friend/p2-cxx03.cpp
new file mode 100644
index 0000000..f8cabfd
--- /dev/null
+++ b/clang/test/CXX/class.access/class.friend/p2-cxx03.cpp
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+template<typename T>
+class X0 {
+  friend T; // expected-warning{{non-class friend type 'T' is a C++11 extension}}
+};
+
+class X1 { };
+enum E1 { };
+X0<X1> x0a;
+X0<X1 *> x0b;
+X0<int> x0c;
+X0<E1> x0d;
+
diff --git a/clang/test/CXX/class.access/class.friend/p3-cxx0x.cpp b/clang/test/CXX/class.access/class.friend/p3-cxx0x.cpp
new file mode 100644
index 0000000..00fc0a3
--- /dev/null
+++ b/clang/test/CXX/class.access/class.friend/p3-cxx0x.cpp
@@ -0,0 +1,29 @@
+// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
+template<typename T>
+class X0 {
+  friend T;
+};
+
+class Y1 { };
+enum E1 { };
+X0<Y1> x0a;
+X0<Y1 *> x0b;
+X0<int> x0c;
+X0<E1> x0d;
+
+template<typename T>
+class X1 {
+  friend typename T::type; // expected-error{{no type named 'type' in 'Y1'}}
+};
+
+struct Y2 {
+  struct type { };
+};
+
+struct Y3 {
+  typedef int type;
+};
+
+X1<Y2> x1a;
+X1<Y3> x1b;
+X1<Y1> x1c; // expected-note{{in instantiation of template class 'X1<Y1>' requested here}}
diff --git a/clang/test/CXX/class.access/class.friend/p6.cpp b/clang/test/CXX/class.access/class.friend/p6.cpp
new file mode 100644
index 0000000..7f7d909
--- /dev/null
+++ b/clang/test/CXX/class.access/class.friend/p6.cpp
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+void f1();
+
+struct X {
+  void f2();
+};
+
+struct Y {
+  friend void ::f1() { } // expected-error{{friend function definition cannot be qualified with '::'}}
+  friend void X::f2() { } // expected-error{{friend function definition cannot be qualified with 'X::'}}
+};
+
+void local() {
+  void f();
+
+  struct Local {
+    friend void f() { } // expected-error{{friend function cannot be defined in a local class}}
+  };
+}