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

1 files changed, 283 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/cxx0x-initializer-constructor.cpp b/clang/test/SemaCXX/cxx0x-initializer-constructor.cpp
new file mode 100644
index 0000000..09aca24
--- /dev/null
+++ b/clang/test/SemaCXX/cxx0x-initializer-constructor.cpp
@@ -0,0 +1,283 @@
+// RUN: %clang_cc1 -std=c++0x -fsyntax-only -verify %s
+
+struct one { char c[1]; };
+struct two { char c[2]; };
+
+namespace std {
+  typedef decltype(sizeof(int)) size_t;
+
+  // libc++'s implementation
+  template <class _E>
+  class initializer_list
+  {
+    const _E* __begin_;
+    size_t    __size_;
+
+    initializer_list(const _E* __b, size_t __s)
+      : __begin_(__b),
+        __size_(__s)
+    {}
+
+  public:
+    typedef _E        value_type;
+    typedef const _E& reference;
+    typedef const _E& const_reference;
+    typedef size_t    size_type;
+
+    typedef const _E* iterator;
+    typedef const _E* const_iterator;
+
+    initializer_list() : __begin_(nullptr), __size_(0) {}
+
+    size_t    size()  const {return __size_;}
+    const _E* begin() const {return __begin_;}
+    const _E* end()   const {return __begin_ + __size_;}
+  };
+}
+
+namespace objects {
+
+  struct X1 { X1(int); };
+  struct X2 { explicit X2(int); }; // expected-note {{constructor declared here}}
+
+  template <int N>
+  struct A {
+    A() { static_assert(N == 0, ""); }
+    A(int, double) { static_assert(N == 1, ""); }
+  };
+
+  template <int N>
+  struct F {
+    F() { static_assert(N == 0, ""); }
+    F(int, double) { static_assert(N == 1, ""); }
+    F(std::initializer_list<int>) { static_assert(N == 3, ""); }
+  };
+
+  template <int N>
+  struct D {
+    D(std::initializer_list<int>) { static_assert(N == 0, ""); } // expected-note 1 {{candidate}}
+    D(std::initializer_list<double>) { static_assert(N == 1, ""); } // expected-note 1 {{candidate}}
+  };
+
+  template <int N>
+  struct E {
+    E(int, int) { static_assert(N == 0, ""); }
+    E(X1, int) { static_assert(N == 1, ""); }
+  };
+
+  void overload_resolution() {
+    { A<0> a{}; }
+    { A<0> a = {}; }
+    { A<1> a{1, 1.0}; }
+    { A<1> a = {1, 1.0}; }
+
+    { F<0> f{}; }
+    { F<0> f = {}; }
+    // Narrowing conversions don't affect viability. The next two choose
+    // the initializer_list constructor.
+    // FIXME: Emit narrowing conversion errors.
+    { F<3> f{1, 1.0}; } // xpected-error {{narrowing conversion}}
+    { F<3> f = {1, 1.0}; } // xpected-error {{narrowing conversion}}
+    { F<3> f{1, 2, 3, 4, 5, 6, 7, 8}; }
+    { F<3> f = {1, 2, 3, 4, 5, 6, 7, 8}; }
+    { F<3> f{1, 2, 3, 4, 5, 6, 7, 8}; }
+    { F<3> f{1, 2}; }
+
+    { D<0> d{1, 2, 3}; }
+    { D<1> d{1.0, 2.0, 3.0}; }
+    { D<-1> d{1, 2.0}; } // expected-error {{ambiguous}}
+
+    { E<0> e{1, 2}; }
+  }
+
+  void explicit_implicit() {
+    { X1 x{0}; }
+    { X1 x = {0}; }
+    { X2 x{0}; }
+    { X2 x = {0}; } // expected-error {{constructor is explicit}}
+  }
+
+  struct C {
+    C();
+    C(int, double);
+    C(int, int);
+
+    int operator[](C);
+  };
+
+  C function_call() {
+    void takes_C(C);
+    takes_C({1, 1.0});
+
+    C c;
+    c[{1, 1.0}];
+
+    return {1, 1.0};
+  }
+
+  void inline_init() {
+    (void) C{1, 1.0};
+    (void) new C{1, 1.0};
+    (void) A<1>{1, 1.0};
+    (void) new A<1>{1, 1.0};
+  }
+
+  struct B { // expected-note 2 {{candidate constructor}}
+    B(C, int, C); // expected-note {{candidate constructor not viable: cannot convert initializer list argument to 'objects::C'}}
+  };
+
+  void nested_init() {
+    B b1{{1, 1.0}, 2, {3, 4}};
+    B b2{{1, 1.0, 4}, 2, {3, 4}}; // expected-error {{no matching constructor for initialization of 'objects::B'}}
+  }
+
+  void overloaded_call() {
+    one ov1(B); // expected-note {{not viable: cannot convert initializer list}}
+    two ov1(C); // expected-note {{not viable: cannot convert initializer list}}
+
+    static_assert(sizeof(ov1({})) == sizeof(two), "bad overload");
+    static_assert(sizeof(ov1({1, 2})) == sizeof(two), "bad overload");
+    static_assert(sizeof(ov1({{1, 1.0}, 2, {3, 4}})) == sizeof(one), "bad overload");
+
+    ov1({1}); // expected-error {{no matching function}}
+
+    one ov2(int);
+    two ov2(F<3>);
+    static_assert(sizeof(ov2({1})) == sizeof(one), "bad overload"); // list -> int ranks as identity
+    static_assert(sizeof(ov2({1, 2, 3})) == sizeof(two), "bad overload"); // list -> F only viable
+  }
+
+  struct G { // expected-note 6 {{not viable}}
+    // This is not an initializer-list constructor.
+    template<typename ...T>
+    G(std::initializer_list<int>, T ...);  // expected-note 3 {{not viable}}
+  };
+
+  struct H { // expected-note 6 {{not viable}}
+    explicit H(int, int); // expected-note 3 {{not viable}} expected-note {{declared here}}
+    H(int, void*); // expected-note 3 {{not viable}}
+  };
+
+  void edge_cases() {
+    // invalid (the first phase only considers init-list ctors)
+    // (for the second phase, no constructor is viable)
+    G g1{1, 2, 3}; // expected-error {{no matching constructor}}
+    (void) new G{1, 2, 3}; // expected-error {{no matching constructor}}
+    (void) G{1, 2, 3} // expected-error {{no matching constructor}}
+
+    // valid (T deduced to <>).
+    G g2({1, 2, 3});
+    (void) new G({1, 2, 3});
+    (void) G({1, 2, 3});
+
+    // invalid
+    H h1({1, 2}); // expected-error {{no matching constructor}}
+    (void) new H({1, 2}); // expected-error {{no matching constructor}}
+    // FIXME: Bad diagnostic, mentions void type instead of init list.
+    (void) H({1, 2}); // expected-error {{no matching conversion}}
+
+    // valid (by copy constructor).
+    H h2({1, nullptr});
+    (void) new H({1, nullptr});
+    (void) H({1, nullptr});
+
+    // valid
+    H h3{1, 2};
+    (void) new H{1, 2};
+    (void) H{1, 2};
+  }
+
+  struct memberinit {
+    H h1{1, nullptr};
+    H h2 = {1, nullptr};
+    H h3{1, 1};
+    H h4 = {1, 1}; // expected-error {{constructor is explicit}}
+  };
+}
+
+namespace PR12092 {
+
+  struct S {
+    S(const char*);
+  };
+  struct V {
+    template<typename T> V(T, T);
+    void f(std::initializer_list<S>);
+    void f(const V &);
+  };
+
+  void g() {
+    extern V s;
+    s.f({"foo", "bar"});
+  }
+
+}
+
+namespace PR12117 {
+  struct A { A(int); }; 
+  struct B { B(A); } b{{0}};
+  struct C { C(int); } c{0};
+}
+
+namespace PR12167 {
+  template<int N> struct string {};
+
+  struct X {
+    X(const char v);
+    template<typename T> bool operator()(T) const;
+  };
+
+  template<int N, class Comparator> bool g(const string<N>& s, Comparator cmp) {
+    return cmp(s);
+  }
+  template<int N> bool f(const string<N> &s) {
+    return g(s, X{'x'});
+  }
+
+  bool s = f(string<1>());
+}
+
+namespace PR12257_PR12241 {
+  struct command_pair
+  {
+    command_pair(int, int);
+  };
+
+  struct command_map
+  {
+    command_map(std::initializer_list<command_pair>);
+  };
+
+  struct generator_pair
+  {
+    generator_pair(const command_map);
+  };
+
+  // 5 levels: init list, gen_pair, command_map, init list, command_pair
+  const std::initializer_list<generator_pair> x = {{{{{3, 4}}}}};
+
+  // 4 levels: init list, gen_pair, command_map via init list, command_pair
+  const std::initializer_list<generator_pair> y = {{{{1, 2}}}};
+}
+
+namespace PR12120 {
+  struct A { explicit A(int); A(float); }; // expected-note {{declared here}}
+  A a = { 0 }; // expected-error {{constructor is explicit}}
+
+  struct B { explicit B(short); B(long); }; // expected-note 2 {{candidate}}
+  B b = { 0 }; // expected-error {{ambiguous}}
+}
+
+namespace PR12498 {
+  class ArrayRef; // expected-note{{forward declaration}}
+
+  struct C {
+    void foo(const ArrayRef&); // expected-note{{passing argument to parameter here}}
+  };
+
+  static void bar(C* c)
+  {
+    c->foo({ nullptr, 1 }); // expected-error{{initialization of incomplete type 'const PR12498::ArrayRef'}}
+  }
+
+}