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 return *this;
52 }
53
setgtest54 void setg(CharT* gbeg, CharT* gnext, CharT* gend)
55 {
56 base::setg(gbeg, gnext, gend);
57 }
setptest58 void setp(CharT* pbeg, CharT* pend)
59 {
60 base::setp(pbeg, pend);
61 }
62 };
63
main()64 int main()
65 {
66 {
67 test<char> t;
68 test<char> t2;
69 swap(t2, t);
70 }
71 {
72 test<wchar_t> t;
73 test<wchar_t> t2;
74 swap(t2, t);
75 }
76 {
77 char g1, g2, g3, p1, p3;
78 test<char> t;
79 t.setg(&g1, &g2, &g3);
80 t.setp(&p1, &p3);
81 test<char> t2;
82 swap(t2, t);
83 }
84 {
85 wchar_t g1, g2, g3, p1, p3;
86 test<wchar_t> t;
87 t.setg(&g1, &g2, &g3);
88 t.setp(&p1, &p3);
89 test<wchar_t> t2;
90 swap(t2, t);
91 }
92 std::locale::global(std::locale(LOCALE_en_US_UTF_8));
93 {
94 test<char> t;
95 test<char> t2;
96 swap(t2, t);
97 }
98 {
99 test<wchar_t> t;
100 test<wchar_t> t2;
101 swap(t2, t);
102 }
103 }
104