SIG_IGN 175 lib/tty/tty.c act.sa_handler = SIG_IGN; SIG_IGN 175 lib/utilunix.c ignore.sa_handler = SIG_IGN; SIG_IGN 234 tests/lib/utilunix__my_system-common.c mctest_assert_ptr_eq (_act->sa_handler, SIG_IGN); \