1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <vector>
11 // vector<bool>
12 
13 // static void swap(reference x, reference y) noexcept;
14 
15 #include <vector>
16 #include <cassert>
17 
18 int main()
19 {
20 
21     bool a[] = {false, true, false, true};
22     bool* an = a + sizeof(a)/sizeof(a[0]);
23 
24 	std::vector<bool> v(a, an);
25 	std::vector<bool>::reference r1 = v[0];
26 	std::vector<bool>::reference r2 = v[3];
27 
28 #if __has_feature(cxx_noexcept)
29     static_assert((noexcept(v.swap(r1,r2))), "");
30 #endif
31 
32 	assert(!r1);
33 	assert( r2);
34 	v.swap(r1, r2);
35 	assert( r1);
36 	assert(!r2);
37 }