1 // 2003-04-30 Petur Runolfsson <peturr02@ru.is>
3 // Copyright (C) 2003, 2005 Free Software Foundation, Inc.
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)
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.
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,
21 #include <testsuite_hooks.h>
27 #include <sys/types.h>
30 // Check that wcin.rdbuf()->sputbackc() puts characters back to stdin.
31 // If wcin.rdbuf() is a filebuf, this succeeds when stdin is a regular
32 // file, but fails otherwise, hence the named fifo.
36 using namespace __gnu_test;
38 bool test __attribute__((unused)) = true;
40 const char* name = "tmp_fifo5";
42 signal(SIGPIPE, SIG_IGN);
45 try_mkfifo(name, S_IRWXU);
49 VERIFY( child != -1 );
53 FILE* file = fopen(name, "w");
54 fputs("Whatever\n", file);
62 freopen(name, "r", stdin);
65 wint_t c1 = fgetwc(stdin);
67 wint_t c2 = wcin.rdbuf()->sputbackc(L'a');
71 wint_t c3 = fgetwc(stdin);
74 wint_t c4 = ungetwc(L'b', stdin);
78 wint_t c5 = wcin.rdbuf()->sgetc();