Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for an old version of Boost. Click here to view this page for the latest version.


// Copyright (C) 2009-2012 Lorenzo Caminiti
// Distributed under the Boost Software License, Version 1.0
// (see accompanying file LICENSE_1_0.txt or a copy at
// Home at

#include "const_block.hpp"
#include <cassert>

int main(void) {
    int x = 1, y = 2;
    CONST_BLOCK(x, y) { // Constant block.
        assert(x = y);  // Compiler error.
    return 0;