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35 lines
602 B
C++
35 lines
602 B
C++
// Copyright 2023 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/core/launder.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <new>
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struct X
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{
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int v_;
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explicit X( int v = 0 ): v_( v ) {}
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};
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int main()
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{
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X x;
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typedef X const CX;
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::new( &x ) CX( 1 );
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X const* px1 = &x;
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BOOST_TEST_EQ( px1->v_, 1 );
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::new( &x ) CX( 2 );
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X const* px2 = boost::core::launder( px1 );
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BOOST_TEST_EQ( px1, px2 );
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BOOST_TEST_EQ( px2->v_, 2 );
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return boost::report_errors();
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}
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