// { dg-do compile } // -*- C++ -*- // Copyright (C) 2005, 2006 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the terms // of the GNU General Public License as published by the Free Software // Foundation; either version 2, or (at your option) any later // version. // This library is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // General Public License for more details. // You should have received a copy of the GNU General Public License // along with this library; see the file COPYING. If not, write to // the Free Software Foundation, 59 Temple Place - Suite 330, Boston, // MA 02111-1307, USA. // As a special exception, you may use this file as part of a free // software library without restriction. Specifically, if other files // instantiate templates or use macros or inline functions from this // file, or you compile this file and link it with other files to // produce an executable, this file does not by itself cause the // resulting executable to be covered by the GNU General Public // License. This exception does not however invalidate any other // reasons why the executable file might be covered by the GNU General // Public License. // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. // Permission to use, copy, modify, sell, and distribute this software // is hereby granted without fee, provided that the above copyright // notice appears in all copies, and that both that copyright notice // and this permission notice appear in supporting documentation. None // of the above authors, nor IBM Haifa Research Laboratories, make any // representation about the suitability of this software for any // purpose. It is provided "as is" without express or implied // warranty. /** * @file hash_bad_find_example.cpp * An example showing how *not* to use unordered containers. */ /** * This non-compiling example shows wrong use of unordered * associative-containers. These types of containers have distinct * point-type and range-type iterator types. **/ #include <utility> #include <ext/pb_ds/assoc_container.hpp> using namespace std; using namespace pb_ds; int main() { // A collision-chaining hash table mapping ints to chars. typedef cc_hash_table<int, char> map_t; // A map_t object. map_t h; // Insert a value mapping the int 1 to the char 'a'. h.insert(make_pair(1, 'a')); // Find the entry of the key '1' the* wrong* way. // The following line will not compile, since map_t::find returns a // point-iterator, which, by design, is not convertible to a // range-iterator. map_t::iterator it = h.find(1); // { dg-error "conversion from" } return 0; }