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

2 files changed, 173 insertions, 0 deletions

diff --git a/clang/test/CXX/class/class.union/p1.cpp b/clang/test/CXX/class/class.union/p1.cpp
new file mode 100644
index 0000000..f344ae5
--- /dev/null
+++ b/clang/test/CXX/class/class.union/p1.cpp
@@ -0,0 +1,125 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s 
+
+void abort() __attribute__((noreturn));
+
+class Okay {
+  int a_;
+};
+
+class Virtual {
+  virtual void foo() { abort(); } // expected-note 4 {{because type 'Virtual' has a virtual member function}}
+};
+
+class VirtualBase : virtual Okay { // expected-note 4 {{because type 'VirtualBase' has a virtual base class}}
+};
+
+class Ctor {
+  Ctor() { abort(); } // expected-note 4 {{because type 'Ctor' has a user-declared constructor}}
+};
+class Ctor2 {
+  Ctor2(); // expected-note 3 {{because type 'Ctor2' has a user-declared constructor}}
+};
+class CtorTmpl {
+  template<typename T> CtorTmpl(); // expected-note {{because type 'CtorTmpl' has a user-declared constructor}}
+};
+
+class CopyCtor {
+  CopyCtor(CopyCtor &cc) { abort(); } // expected-note 4 {{because type 'CopyCtor' has a user-declared copy constructor}}
+};
+
+// FIXME: this should eventually trigger on the operator's declaration line
+class CopyAssign { // expected-note 4 {{because type 'CopyAssign' has a user-declared copy assignment operator}}
+  CopyAssign& operator=(CopyAssign& CA) { abort(); }
+};
+
+class Dtor {
+  ~Dtor() { abort(); } // expected-note 4 {{because type 'Dtor' has a user-declared destructor}}
+};
+
+union U1 {
+  Virtual v; // expected-error {{union member 'v' has a non-trivial copy constructor}}
+  VirtualBase vbase; // expected-error {{union member 'vbase' has a non-trivial copy constructor}}
+  Ctor ctor; // expected-error {{union member 'ctor' has a non-trivial constructor}}
+  Ctor2 ctor2; // expected-error {{union member 'ctor2' has a non-trivial constructor}}
+  CtorTmpl ctortmpl; // expected-error {{union member 'ctortmpl' has a non-trivial constructor}}
+  CopyCtor copyctor; // expected-error {{union member 'copyctor' has a non-trivial copy constructor}}
+  CopyAssign copyassign; // expected-error {{union member 'copyassign' has a non-trivial copy assignment operator}}
+  Dtor dtor; // expected-error {{union member 'dtor' has a non-trivial destructor}}
+  Okay okay;
+};
+
+union U2 {
+  struct {
+    Virtual v; // expected-note {{because type 'U2::<anonymous struct}}
+  } m1; // expected-error {{union member 'm1' has a non-trivial copy constructor}}
+  struct {
+    VirtualBase vbase; // expected-note {{because type 'U2::<anonymous struct}}
+  } m2; // expected-error {{union member 'm2' has a non-trivial copy constructor}}
+  struct {
+    Ctor ctor; // expected-note {{because type 'U2::<anonymous struct}}
+  } m3; // expected-error {{union member 'm3' has a non-trivial constructor}}
+  struct {
+    Ctor2 ctor2; // expected-note {{because type 'U2::<anonymous struct}}
+  } m3a; // expected-error {{union member 'm3a' has a non-trivial constructor}}
+  struct {
+    CopyCtor copyctor; // expected-note {{because type 'U2::<anonymous struct}}
+  } m4; // expected-error {{union member 'm4' has a non-trivial copy constructor}}
+  struct {
+    CopyAssign copyassign; // expected-note {{because type 'U2::<anonymous struct}}
+  } m5; // expected-error {{union member 'm5' has a non-trivial copy assignment operator}}
+  struct {
+    Dtor dtor; // expected-note {{because type 'U2::<anonymous struct}}
+  } m6; // expected-error {{union member 'm6' has a non-trivial destructor}}
+  struct {
+    Okay okay;
+  } m7;
+};
+
+union U3 {
+  struct s1 : Virtual { // expected-note {{because type 'U3::s1' has a base class with a non-trivial copy constructor}}
+  } m1; // expected-error {{union member 'm1' has a non-trivial copy constructor}}
+  struct s2 : VirtualBase { // expected-note {{because type 'U3::s2' has a base class with a non-trivial copy constructor}}
+  } m2; // expected-error {{union member 'm2' has a non-trivial copy constructor}}
+  struct s3 : Ctor { // expected-note {{because type 'U3::s3' has a base class with a non-trivial constructor}}
+  } m3; // expected-error {{union member 'm3' has a non-trivial constructor}}
+  struct s3a : Ctor2 { // expected-note {{because type 'U3::s3a' has a base class with a non-trivial constructor}}
+  } m3a; // expected-error {{union member 'm3a' has a non-trivial constructor}}
+  struct s4 : CopyCtor { // expected-note {{because type 'U3::s4' has a base class with a non-trivial copy constructor}}
+  } m4; // expected-error {{union member 'm4' has a non-trivial copy constructor}}
+  struct s5 : CopyAssign { // expected-note {{because type 'U3::s5' has a base class with a non-trivial copy assignment operator}}
+  } m5; // expected-error {{union member 'm5' has a non-trivial copy assignment operator}}
+  struct s6 : Dtor { // expected-note {{because type 'U3::s6' has a base class with a non-trivial destructor}}
+  } m6; // expected-error {{union member 'm6' has a non-trivial destructor}}
+  struct s7 : Okay {
+  } m7;
+};
+
+union U4 {
+  static int i1; // expected-warning {{static data member 'i1' in union is a C++11 extension}}
+};
+int U4::i1 = 10;
+
+union U5 {
+  int& i1; // expected-error {{union member 'i1' has reference type 'int &'}}
+};
+
+template <class A, class B> struct Either {
+  bool tag;
+  union { // expected-note 6 {{in instantiation of member class}}
+    A a;
+    B b; // expected-error 6 {{non-trivial}}
+  };
+
+  Either(const A& a) : tag(true), a(a) {}
+  Either(const B& b) : tag(false), b(b) {}
+};
+
+void fred() {
+  Either<int,Virtual> virt(0); // expected-note {{in instantiation of template}}
+  Either<int,VirtualBase> vbase(0); // expected-note {{in instantiation of template}}
+  Either<int,Ctor> ctor(0); // expected-note {{in instantiation of template}}
+  Either<int,CopyCtor> copyctor(0); // expected-note {{in instantiation of template}}
+  Either<int,CopyAssign> copyassign(0); // expected-note {{in instantiation of template}}
+  Either<int,Dtor> dtor(0); // expected-note {{in instantiation of template}}
+  Either<int,Okay> okay(0);
+}
diff --git a/clang/test/CXX/class/class.union/p2-0x.cpp b/clang/test/CXX/class/class.union/p2-0x.cpp
new file mode 100644
index 0000000..b5c4109
--- /dev/null
+++ b/clang/test/CXX/class/class.union/p2-0x.cpp
@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -verify -std=c++11 %s
+
+// Unlike in C++98, C++11 allows unions to have static data members.
+
+union U1 {
+  static constexpr int k1 = 0;
+  static const int k2 = k1;
+  static int k3 = k2; // expected-error {{non-const static data member must be initialized out of line}}
+  static constexpr double k4 = k2;
+  static const double k5 = k4; // expected-warning {{GNU extension}} expected-note {{use 'constexpr'}}
+  int n[k1 + 3];
+};
+
+constexpr int U1::k1;
+constexpr int U1::k2;
+int U1::k3;
+
+const double U1::k4;
+const double U1::k5;
+
+template<typename T>
+union U2 {
+  static const int k1;
+  static double k2;
+  T t;
+};
+template<typename T> constexpr int U2<T>::k1 = sizeof(U2<T>);
+template<typename T> double U2<T>::k2 = 5.3;
+
+static_assert(U2<int>::k1 == sizeof(int), "");
+static_assert(U2<char>::k1 == sizeof(char), "");
+
+union U3 {
+  static const int k;
+  U3() : k(0) {} // expected-error {{does not name a non-static data member}}
+};
+
+struct S {
+  union {
+    static const int n; // expected-error {{static members cannot be declared in an anonymous union}}
+    int a;
+    int b;
+  };
+};
+static union {
+  static const int k; // expected-error {{static members cannot be declared in an anonymous union}}
+  int n;
+};