have_dupfd_cloexec  509 lib/fcntl.c      static int have_dupfd_cloexec = GNULIB_defined_F_DUPFD_CLOEXEC ? -1 : 0;
have_dupfd_cloexec  510 lib/fcntl.c      if (0 <= have_dupfd_cloexec)
have_dupfd_cloexec  515 lib/fcntl.c              have_dupfd_cloexec = 1;
have_dupfd_cloexec  525 lib/fcntl.c                have_dupfd_cloexec = -1;
have_dupfd_cloexec  531 lib/fcntl.c      if (0 <= result && have_dupfd_cloexec == -1)