1// Copyright 2002 The Trustees of Indiana University.
2
3// Use, modification and distribution is subject to the Boost Software
4// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5// http://www.boost.org/LICENSE_1_0.txt)
6
7// Boost.MultiArray Library
8// Authors: Ronald Garcia
9// Jeremy Siek
10// Andrew Lumsdaine
11// See http://www.boost.org/libs/multi_array for documentation.
12
13//
14// fail_cview3.cpp
15// ensure const_array_ref doesn't allow assignment.
16//
17
18#include <boost/multi_array.hpp>
19
20#include <boost/core/lightweight_test.hpp>
21
22#include <boost/array.hpp>
23#include <boost/type.hpp>
24
25int
26main()
27{
28 const int ndims=3;
29 typedef boost::multi_array<int,ndims> array;
30
31 boost::array<array::size_type,ndims> sma_dims = {.elems: {2,3,4}};
32
33 int data[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,
34 14,15,16,17,18,19,20,21,22,23};
35 const int data_size = 24;
36
37 array sma(sma_dims);
38 sma.assign(begin: data,end: data+data_size);
39
40 //
41 // subarray dims:
42 // [base,stride,bound)
43 // [0,1,2), [1,1,3), [0,2,4)
44 //
45
46 const array& csma = sma;
47 typedef array::index_range range;
48 array::index_gen indices;
49 array::const_array_view<ndims>::type csma2 =
50 csma[indices[range(0,2)][range(1,3)][range(0,4,2)]];
51
52 for (array::index i = 0; i != 2; ++i)
53 for (array::index j = 0; j != 2; ++j)
54 for (array::index k = 0; k != 2; ++k)
55 // FAIL! csma2 cannot be assigned to.
56 csma2[i][j][k] = 0;
57
58 return boost::report_errors();
59}
60
61
62
63
64
65
66
67

source code of boost/libs/multi_array/test/fail_cview3.cpp