xref: /llvm-project/libcxx/test/std/containers/sequences/vector.bool/reference.swap.pass.cpp (revision 0ab420570500273e2814a21f65075257b319b59b)
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     bool a[] = {false, true, false, true};
21     bool* an = a + sizeof(a)/sizeof(a[0]);
22 
23 	std::vector<bool> v(a, an);
24 	std::vector<bool>::reference r1 = v[0];
25 	std::vector<bool>::reference r2 = v[3];
26 	assert(!r1);
27 	assert( r2);
28 	v.swap(r1, r2);
29 	assert( r1);
30 	assert(!r2);
31 }