check_for_fifo     76 maint/gnulib/lib/isapipe.c   bool check_for_fifo = (HAVE_FIFO_PIPES == 1);
check_for_fifo    113 maint/gnulib/lib/isapipe.c           check_for_fifo = (S_ISFIFO (pipe_st.st_mode) != 0);
check_for_fifo    120 maint/gnulib/lib/isapipe.c      && (check_for_fifo ? S_ISFIFO (st.st_mode) : S_ISSOCK (st.st_mode)));