53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
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// Copyright (C) 2008-2018 Lorenzo Caminiti
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// Distributed under the Boost Software License, Version 1.0 (see accompanying
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// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
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// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
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// Test a public function contract cannot override from a protected one.
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#include <boost/contract/public_function.hpp>
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#include <boost/contract/base_types.hpp>
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#include <boost/contract/override.hpp>
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#include <boost/contract/check.hpp>
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struct b {
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protected:
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virtual void f(boost::contract::virtual_* v = 0) {
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boost::contract::check c = boost::contract::public_function(v, this);
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}
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friend class boost::contract::access; // Test this cannot prevent error.
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};
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struct a
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#define BASES public b
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: BASES
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{
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typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
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#undef BASES
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void f(boost::contract::virtual_* v = 0) /* override */ {
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boost::contract::check c = boost::contract::public_function<override_f>(
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v, &a::f, this); // Error (override cannot access b::f).
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#ifdef BOOST_CONTRACT_NO_PUBLIC_FUNCTIONS
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#error "Forcing error even when public functions not checked"
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#endif
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}
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// Correctly, GCC and CLang cannot even see b::f as part of overloaded bases
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// because it is protected. MSVC also fails compilation but only when
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// override_f below tries to call b::f (because it is protected so it cannot
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// be seen from within override_f).
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BOOST_CONTRACT_OVERRIDE(f)
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friend class boost::contract::access; // Test this cannot prevent error.
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};
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int main() {
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a aa;
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aa.f();
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return 0;
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}
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