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 // REQUIRES: locale.en_US.UTF-8
11
12 // <streambuf>
13
14 // template <class charT, class traits = char_traits<charT> >
15 // class basic_streambuf;
16
17 // void swap(basic_streambuf& rhs);
18
19 #include <streambuf>
20 #include <cassert>
21
22 #include "platform_support.h" // locale name macros
23
24 template <class CharT>
25 struct test
26 : public std::basic_streambuf<CharT>
27 {
28 typedef std::basic_streambuf<CharT> base;
testtest29 test() {}
30
swaptest31 void swap(test& t)
32 {
33 test old_this(*this);
34 test old_that(t);
35 base::swap(t);
36 assert(this->eback() == old_that.eback());
37 assert(this->gptr() == old_that.gptr());
38 assert(this->egptr() == old_that.egptr());
39 assert(this->pbase() == old_that.pbase());
40 assert(this->pptr() == old_that.pptr());
41 assert(this->epptr() == old_that.epptr());
42 assert(this->getloc() == old_that.getloc());
43
44 assert(t.eback() == old_this.eback());
45 assert(t.gptr() == old_this.gptr());
46 assert(t.egptr() == old_this.egptr());
47 assert(t.pbase() == old_this.pbase());
48 assert(t.pptr() == old_this.pptr());
49 assert(t.epptr() == old_this.epptr());
50 assert(t.getloc() == old_this.getloc());
51 }
52
setgtest53 void setg(CharT* gbeg, CharT* gnext, CharT* gend)
54 {
55 base::setg(gbeg, gnext, gend);
56 }
setptest57 void setp(CharT* pbeg, CharT* pend)
58 {
59 base::setp(pbeg, pend);
60 }
61 };
62
main()63 int main()
64 {
65 {
66 test<char> t;
67 test<char> t2;
68 t2.swap(t);
69 }
70 {
71 test<wchar_t> t;
72 test<wchar_t> t2;
73 t2.swap(t);
74 }
75 {
76 char g1, g2, g3, p1, p3;
77 test<char> t;
78 t.setg(&g1, &g2, &g3);
79 t.setp(&p1, &p3);
80 test<char> t2;
81 t2.swap(t);
82 }
83 {
84 wchar_t g1, g2, g3, p1, p3;
85 test<wchar_t> t;
86 t.setg(&g1, &g2, &g3);
87 t.setp(&p1, &p3);
88 test<wchar_t> t2;
89 t2.swap(t);
90 }
91 std::locale::global(std::locale(LOCALE_en_US_UTF_8));
92 {
93 test<char> t;
94 test<char> t2;
95 t2.swap(t);
96 }
97 {
98 test<wchar_t> t;
99 test<wchar_t> t2;
100 t2.swap(t);
101 }
102 }
103