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58 lines
844 B
C++
58 lines
844 B
C++
// (C) Copyright Terje Slettebo 2001.
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// (C) Copyright John Maddock 2001.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org/libs/config for most recent version.
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// MACRO: BOOST_HAS_NRVO
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// TITLE: Named return value optimisation.
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// DESCRIPTION: Named return value optimisation.
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namespace boost_has_nrvo
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{
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class test_class
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{
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public:
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test_class() {}
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test_class(const test_class&)
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{
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++copy_count;
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}
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static int copy_count;
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};
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int test_class::copy_count;
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test_class f()
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{
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test_class nrv;
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return nrv;
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}
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int test()
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{
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test_class::copy_count=0;
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f();
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return test_class::copy_count;
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}
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} // namespace boost_has_nrvo
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