// 2003-04-30 Petur Runolfsson <peturr02@ru.is> // Copyright (C) 2003, 2005 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 2, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, // USA. #include <testsuite_hooks.h> #include <cstdio> #include <iostream> #include <unistd.h> #include <signal.h> #include <fcntl.h> #include <sys/types.h> #include <sys/stat.h> // Check that wcin.rdbuf()->sputbackc() puts characters back to stdin. // If wcin.rdbuf() is a filebuf, this succeeds when stdin is a regular // file, but fails otherwise, hence the named fifo. void test01() { using namespace std; using namespace __gnu_test; bool test __attribute__((unused)) = true; const char* name = "tmp_fifo5"; signal(SIGPIPE, SIG_IGN); unlink(name); try_mkfifo(name, S_IRWXU); semaphore s1, s2; int child = fork(); VERIFY( child != -1 ); if (child == 0) { FILE* file = fopen(name, "w"); fputs("Whatever\n", file); fflush(file); s1.signal (); s2.wait (); fclose(file); exit(0); } freopen(name, "r", stdin); s1.wait (); wint_t c1 = fgetwc(stdin); VERIFY( c1 != WEOF ); wint_t c2 = wcin.rdbuf()->sputbackc(L'a'); VERIFY( c2 != WEOF ); VERIFY( c2 == L'a' ); wint_t c3 = fgetwc(stdin); VERIFY( c3 != WEOF ); VERIFY( c3 == c2 ); wint_t c4 = ungetwc(L'b', stdin); VERIFY( c4 != WEOF ); VERIFY( c4 == L'b' ); wint_t c5 = wcin.rdbuf()->sgetc(); VERIFY( c5 != WEOF ); VERIFY( c5 == c4 ); s2.signal (); } int main() { test01(); return 0; }