ctor.pass.cpp revision 4b53f508efcd857b2dddeff092a8509def5bc6bd 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <locale>
11
12// wbuffer_convert<Codecvt, Elem, Tr>
13
14// wbuffer_convert(streambuf *bytebuf = 0, Codecvt *pcvt = new Codecvt,
15//                 state_type state = state_type());
16
17#include <locale>
18#include <codecvt>
19#include <sstream>
20#include <cassert>
21#include <new>
22
23int new_called = 0;
24
25void* operator new(std::size_t s) throw(std::bad_alloc)
26{
27    ++new_called;
28    return std::malloc(s);
29}
30
31void  operator delete(void* p) throw()
32{
33    --new_called;
34    std::free(p);
35}
36
37int main()
38{
39    typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > B;
40    {
41        B b;
42        assert(b.rdbuf() == nullptr);
43        assert(new_called != 0);
44    }
45    assert(new_called == 0);
46    {
47        std::stringstream s;
48        B b(s.rdbuf());
49        assert(b.rdbuf() == s.rdbuf());
50        assert(new_called != 0);
51    }
52    assert(new_called == 0);
53    {
54        std::stringstream s;
55        B b(s.rdbuf(), new std::codecvt_utf8<wchar_t>);
56        assert(b.rdbuf() == s.rdbuf());
57        assert(new_called != 0);
58    }
59    assert(new_called == 0);
60    {
61        std::stringstream s;
62        B b(s.rdbuf(), new std::codecvt_utf8<wchar_t>, std::mbstate_t());
63        assert(b.rdbuf() == s.rdbuf());
64        assert(new_called != 0);
65    }
66    assert(new_called == 0);
67}
68