projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0bad3b7c PC |
1 | // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> |
| 2 | ||
| 3 | // Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc. | |
| 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 | |
| 8 | // Free Software Foundation; either version 2, or (at your option) | |
| 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 | |
| 17 | // with this library; see the file COPYING. If not, write to the Free | |
| 18 | // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
| 19 | // USA. | |
| 20 | ||
| 21 | // 27.8.1.4 Overridden virtual functions | |
| 22 | ||
| 23 | #include <fstream> | |
| 24 | #include <testsuite_hooks.h> | |
| 25 | #include <testsuite_io.h> | |
| 26 | ||
| 27 | // @require@ %-*.tst %-*.txt | |
| 28 | // @diff@ %-*.tst %*.txt | |
| 29 | ||
| 30 | const char name_01[] = "tmp_sungetc_2io.tst"; // empty file, need to create | |
| 31 | ||
| 32 | void test01() | |
| 33 | { | |
| 34 | using namespace std; | |
| aecf642c | 35 | using namespace __gnu_test; |
| 0bad3b7c PC |
36 | |
| 37 | typedef filebuf::int_type int_type; | |
| 38 | typedef filebuf::traits_type traits_type; | |
| 39 | typedef size_t size_type; | |
| 40 | ||
| 41 | bool test = true; | |
| 42 | streamsize strmsz_1, strmsz_2; | |
| 43 | int_type c1, c2, c3; | |
| 44 | ||
| 45 | // int_type sungetc() | |
| 46 | // if in_cur not avail, return pbackfail(), else decrement and | |
| 47 | // return to_int_type(*gptr()) | |
| 48 | ||
| 49 | // in | out | |
| 50 | { | |
| 51 | constraint_filebuf fb_01; | |
| 52 | fb_01.pubsetbuf(0, 0); | |
| 53 | fb_01.open(name_01, ios_base::out | ios_base::in | ios_base::trunc); | |
| 54 | VERIFY( fb_01.unbuffered() ); | |
| 55 | fb_01.sputc('u'); | |
| 56 | fb_01.sputc('v'); | |
| 57 | fb_01.pubseekoff(-1, std::ios_base::end); | |
| 58 | c3 = fb_01.sbumpc(); | |
| 59 | strmsz_1 = fb_01.in_avail(); | |
| 60 | c2 = fb_01.sungetc(); | |
| 61 | strmsz_2 = fb_01.in_avail(); | |
| 62 | VERIFY( c2 == 'v' ); // VERIFY( c2 != traits_type::eof() ); | |
| 63 | VERIFY( strmsz_1 + 1 == strmsz_2 ); | |
| 64 | //test for _in_cur == _in_end | |
| 65 | fb_01.pubseekoff(0, std::ios_base::end); | |
| 66 | strmsz_1 = fb_01.in_avail(); // -1 cuz at the end | |
| 67 | c1 = fb_01.sgetc(); | |
| 68 | c2 = fb_01.sungetc(); | |
| 69 | strmsz_2 = fb_01.in_avail(); // 1 | |
| 70 | c3 = fb_01.sgetc(); | |
| 71 | VERIFY( c1 != c2 ); | |
| 72 | VERIFY( strmsz_2 != strmsz_1 ); | |
| 73 | VERIFY( strmsz_2 == 1 ); | |
| 74 | VERIFY( fb_01.unbuffered() ); | |
| 75 | } | |
| 76 | } | |
| 77 | ||
| 78 | main() | |
| 79 | { | |
| 80 | test01(); | |
| 81 | return 0; | |
| 82 | } |