1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
// Copyright 2023 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/core/launder.hpp>
#include <boost/core/lightweight_test.hpp>
#include <new>
struct X
{
int v_;
explicit X( int v = 0 ): v_( v ) {}
};
int main()
{
X x;
typedef X const CX;
::new( &x ) CX( 1 );
X const* px1 = &x;
BOOST_TEST_EQ( px1->v_, 1 );
::new( &x ) CX( 2 );
X const* px2 = boost::core::launder( px1 );
BOOST_TEST_EQ( px1, px2 );
BOOST_TEST_EQ( px2->v_, 2 );
return boost::report_errors();
}
|
