set_rdbuf.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <ios>
11
12// template <class charT, class traits> class basic_ios
13
14// void set_rdbuf(basic_streambuf<charT, traits>* sb);
15
16#include <ios>
17#include <streambuf>
18#include <cassert>
19
20struct testbuf
21    : public std::streambuf
22{
23};
24
25struct testios
26    : public std::ios
27{
28    testios(std::streambuf* p) : std::ios(p) {}
29    void set_rdbuf(std::streambuf* x) {std::ios::set_rdbuf(x);}
30};
31
32int main()
33{
34    testbuf sb1;
35    testbuf sb2;
36    testios ios(&sb1);
37    try
38    {
39        ios.setstate(std::ios::badbit);
40        ios.exceptions(std::ios::badbit);
41    }
42    catch (...)
43    {
44    }
45    ios.set_rdbuf(&sb2);
46    assert(ios.rdbuf() == &sb2);
47    try
48    {
49        ios.setstate(std::ios::badbit);
50        ios.exceptions(std::ios::badbit);
51    }
52    catch (...)
53    {
54    }
55    ios.set_rdbuf(0);
56    assert(ios.rdbuf() == 0);
57}
58