libcxx/test/std/iterators/iterator.range/begin_non_const.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <iterator>
  10
  11 // template <class C> auto begin(C& c) -> decltype(c.begin());
  12
  13 #include <vector>
  14 #include <cassert>
  15
  16 #include "test_macros.h"
  17
  18 int main(int, char**)
  19 {
  20     int ia[] = {1, 2, 3};
  21     std::vector<int> v(ia, ia + sizeof(ia)/sizeof(ia[0]));
  22     std::vector<int>::iterator i = begin(v);
  23     assert(*i == 1);
  24     *i = 2;
  25     assert(*i == 2);
  26
  27   return 0;
  28 }