/* This testcase is part of GDB, the GNU debugger. Copyright 2017-2019 Free Software Foundation, Inc. This program 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 3 of the License, or (at your option) any later version. This program 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 program. If not, see . */ /* This program is intended to be started outside of gdb, and then attached to by gdb. It loops for a while, but not forever. */ #include #include #include #include #include #include int main () { /* In case we inherit SIG_IGN. */ signal (SIGTTOU, SIG_DFL); alarm (30); int count = 0; while (1) { struct termios termios; printf ("pid=%ld, count=%d\n", (long) getpid (), count++); /* This generates a SIGTTOU if our progress group is not in the foreground. */ tcgetattr (0, &termios); tcsetattr (0, TCSANOW, &termios); usleep (100000); } return 0; }