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fd63f08b | 1 | // 2003-05-01 Petur Runolfsson <peturr02@ru.is> |
2 | ||
fbd26352 | 3 | // Copyright (C) 2003-2019 Free Software Foundation, Inc. |
fd63f08b | 4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
6bc9506f | 8 | // Free Software Foundation; either version 3, or (at your option) |
fd63f08b | 9 | // any later version. |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License along | |
6bc9506f | 17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
fd63f08b | 19 | |
b14642ed | 20 | // { dg-require-fileio "" } |
16f6b489 | 21 | // { dg-require-binary-io "" } |
b14642ed | 22 | |
fd63f08b | 23 | #include <iostream> |
24 | #include <cstdio> | |
25 | #include <testsuite_hooks.h> | |
26 | ||
27 | void test10() | |
28 | { | |
29 | using namespace std; | |
30 | ||
fd63f08b | 31 | const char* name = "filebuf_virtuals-1.txt"; |
32 | ||
33 | FILE* ret = freopen(name, "r", stdin); | |
e4bb1925 | 34 | VERIFY( ret ); |
fd63f08b | 35 | |
36 | streampos p1 = cin.tellg(); | |
37 | VERIFY( p1 != streampos(-1) ); | |
38 | VERIFY( streamoff(p1) == 0 ); | |
39 | ||
40 | cin.seekg(0, ios::end); | |
41 | VERIFY( cin.good() ); | |
42 | ||
43 | streampos p2 = cin.tellg(); | |
44 | VERIFY( p2 != streampos(-1) ); | |
45 | VERIFY( p2 != p1 ); | |
46 | VERIFY( streamoff(p2) == ftell(stdin) ); | |
47 | ||
48 | cin.seekg(p1); | |
49 | VERIFY( cin.good() ); | |
50 | ||
51 | streamoff n = p2 - p1; | |
52 | VERIFY( n > 0 ); | |
53 | ||
b812c14e | 54 | for (int i = 0; i < n; ++i) |
fd63f08b | 55 | { |
56 | streampos p3 = cin.tellg(); | |
57 | VERIFY( streamoff(p3) == i ); | |
58 | VERIFY( ftell(stdin) == i ); | |
59 | cin.get(); | |
60 | VERIFY( cin.good() ); | |
61 | } | |
62 | ||
63 | streampos p4 = cin.tellg(); | |
64 | VERIFY( streamoff(p4) == n ); | |
65 | VERIFY( ftell(stdin) == n ); | |
66 | cin.get(); | |
67 | VERIFY( cin.eof() ); | |
68 | } | |
69 | ||
70 | int main() | |
71 | { | |
72 | test10(); | |
73 | return 0; | |
74 | } |