* systty.h (CDISABLE): #undef it before re-#defining it.

diff --git a/src/systty.h b/src/systty.h
index b4b30fb41baff41326c8405449287019214da325..a2800944126846d37da8c4d5fb19fb2da180055f 100644 (file)
--- a/src/systty.h
+++ b/src/systty.h
@@ -177,6 +177,7 @@ static struct sensemode {
 #define CDISABLE _POSIX_VDISABLE
 #else /* not _POSIX_VDISABLE */
 #ifdef CDEL
+#undef CDISABLE
 #define CDISABLE CDEL
 #else /* not CDEL */
 #define CDISABLE 255