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