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 
main(int,char **)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 }
29