Vendor import of clang trunk r132879:

http://llvm.org/svn/llvm-project/cfe/trunk@132879

1 files changed, 174 insertions, 0 deletions

diff --git a/test/SemaCXX/generalized-initializers.cpp b/test/SemaCXX/generalized-initializers.cpp
new file mode 100644
index 0000000..ec37a0c
--- /dev/null
+++ b/test/SemaCXX/generalized-initializers.cpp
@@ -0,0 +1,174 @@
+// RUN: %clang_cc1 -std=c++0x -fsyntax-only -verify %s
+// XFAIL: *
+
+template <typename T, typename U>
+struct same_type { static const bool value = false; };
+template <typename T>
+struct same_type<T, T> { static const bool value = true; };
+
+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 integral {
+
+  void initialization() {
+    { const int a{}; static_assert(a == 0, ""); }
+    { const int a = {}; static_assert(a == 0, ""); }
+    { const int a{1}; static_assert(a == 1, ""); }
+    { const int a = {1}; static_assert(a == 1, ""); }
+    { const int a{1, 2}; } // expected-error {{excess elements}}
+    { const int a = {1, 2}; } // expected-error {{excess elements}}
+    { const short a{100000}; } // expected-error {{narrowing conversion}}
+    { const short a = {100000}; } // expected-error {{narrowing conversion}}
+  }
+
+  int function_call() {
+    void takes_int(int);
+    takes_int({1});
+
+    int ar[10];
+    (void) ar[{1}]; // expected-error {{initializer list is illegal with the built-in index operator}}
+
+    return {1};
+  }
+
+  void inline_init() {
+    (void) int{1};
+    (void) new int{1};
+  }
+
+  void initializer_list() {
+    std::initializer_list<int> il = { 1, 2, 3 };
+    std::initializer_list<double> dl = { 1.0, 2.0, 3 };
+    auto l = {1, 2, 3, 4};
+    static_assert(same_type<decltype(l), std::initializer_list<int>>::value, "");
+    auto bl = {1, 2.0}; // expected-error {{cannot deduce}}
+
+    for (int i : {1, 2, 3, 4}) {}
+  }
+
+  struct A {
+    int i;
+    A() : i{1} {}
+  };
+
+}
+
+namespace objects {
+
+  template <int N>
+  struct A {
+    A() { static_assert(N == 0, ""); }
+    A(int, double) { static_assert(N == 1, ""); }
+    A(int, int) { static_assert(N == 2, ""); }
+    A(std::initializer_list<int>) { static_assert(N == 3, ""); }
+  };
+
+  void initialization() {
+    { A<0> a{}; }
+    { A<0> a = {}; }
+    { A<1> a{1, 1.0}; }
+    { A<1> a = {1, 1.0}; }
+    { A<3> a{1, 2, 3, 4, 5, 6, 7, 8}; }
+    { A<3> a = {1, 2, 3, 4, 5, 6, 7, 8}; }
+    { A<3> a{1, 2, 3, 4, 5, 6, 7, 8}; }
+    { A<3> a{1, 2}; }
+  }
+
+  struct C {
+    C();
+    C(int, double);
+    C(int, int);
+    C(std::initializer_list<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) A<1>{1, 1.0};
+    (void) new A<1>{1, 1.0};
+  }
+
+  struct B {
+    B(C, int, C);
+  };
+
+  void nested_init() {
+    B b{{1, 1.0}, 2, {3, 4, 5, 6, 7}};
+  }
+}
+
+namespace litb {
+
+  // invalid
+  struct A { int a[2]; A():a({1, 2}) { } }; // expected-error {{}}
+
+  // invalid
+  int a({0}); // expected-error {{}}
+
+  // invalid
+  int const &b({0}); // expected-error {{}}
+
+  struct C { explicit C(int, int); C(int, long); };
+
+  // invalid
+  C c({1, 2}); // expected-error {{}}
+
+  // valid (by copy constructor).
+  C d({1, 2L}); // expected-error {{}}
+
+  // valid
+  C e{1, 2};
+
+  struct B { 
+    template<typename ...T>
+    B(std::initializer_list<int>, T ...); 
+  };
+
+  // invalid (the first phase only considers init-list ctors)
+  // (for the second phase, no constructor is viable)
+  B f{1, 2, 3};
+
+  // valid (T deduced to <>).
+  B g({1, 2, 3});
+
+}