test/SemaCXX/cxx0x-initializer-scalars.cpp

// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s

struct one { char c[1]; };
struct two { char c[2]; };

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}}
    // FIXME: Redundant warnings.
    { const short a{100000}; } // expected-error {{cannot be narrowed}} expected-note {{inserting an explicit cast}} expected-warning {{changes value}}
    { const short a = {100000}; } // expected-error {{cannot be narrowed}} expected-note {{inserting an explicit cast}} expected-warning {{changes value}}
    { if (const int a{1}) static_assert(a == 1, ""); }
    { if (const int a = {1}) static_assert(a == 1, ""); }
  }

  int direct_usage() {
    int ar[10];
    (void) ar[{1}]; // expected-error {{array subscript is not an integer}}

    return {1};
  }

  void inline_init() {
    auto v = int{1};
    (void) new int{1};
  }

  struct A {
    int i;
    A() : i{1} {}
  };

  void function_call() {
    void takes_int(int);
    takes_int({1});
  }

  void overloaded_call() {
    one overloaded(int);
    two overloaded(double);

    static_assert(sizeof(overloaded({0})) == sizeof(one), "bad overload");
    static_assert(sizeof(overloaded({0.0})) == sizeof(two), "bad overload");

    void ambiguous(int, double); // expected-note {{candidate}}
    void ambiguous(double, int); // expected-note {{candidate}}
    ambiguous({0}, {0}); // expected-error {{ambiguous}}

    void emptylist(int);
    void emptylist(int, int, int);
    emptylist({});
    emptylist({}, {}, {});
  }

  void edge_cases() {
    // FIXME: very poor error message
    int a({0}); // expected-error {{cannot initialize}}
    (void) int({0}); // expected-error {{functional-style cast}}
    new int({0});  // expected-error {{cannot initialize}}
  }
}