More signal-handler cleanup.

* configure.ac (FLOAT_CHECK_DOMAIN): Comment fix (Bug#12327).
* src/floatfns.c: Comment fix.
* src/lisp.h (force_auto_save_soon): Declare regardless of SIGDANGER.
SIGDANGER might not be in scope so "#ifdef SIGDANGER" is not right,
and anyway the declaration is harmless even if SIGDANGER is not defined.
* src/syssignal.h (SIGIO): Also #undef if (! defined FIONREAD ||
defined BROKEN_FIONREAD).  systty.h formerly did this, but other
source files not surprisingly expected syssignal.h to define, or
not define, SIGIO, and it's cleaner to do it that way, for consistency.
Include <sys/ioctl.h>, for FIONREAD.
* src/systty.h (SIGIO): Do not #undef here; it's now syssignal.h's job.
This eliminates a problem whereby other files mysteriously had
to include "syssignal.h" before including "systty.h" if they
wanted to use "#ifdef SIGIO".

1 files changed, 1 insertions, 1 deletions

diff --git a/src/floatfns.c b/src/floatfns.c
index e956dc22353..3a95d828c0c 100644
--- a/src/floatfns.c
+++ b/src/floatfns.c
@@ -38,7 +38,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
    This has no effect if HAVE_MATHERR is defined.
 
    Define FLOAT_CHECK_DOMAIN if the float library doesn't handle errors by
-   either setting errno, or signaling SIGFPE/SIGILL.  Otherwise, domain and
+   either setting errno, or signaling SIGFPE.  Otherwise, domain and
    range checking will happen before calling the float routines.  This has
    no effect if HAVE_MATHERR is defined (since matherr will be called when
    a domain error occurs.)