2 files changed, 0 insertions, 8 deletions

diff --git a/src/s/irix6-5.h b/src/s/irix6-5.h
index 9b215845461..1750183189d 100644
--- a/src/s/irix6-5.h
+++ b/src/s/irix6-5.h
@@ -19,9 +19,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "usg5-4-common.h"
 
-#undef _longjmp /* use system versions, not conservative aliases */
-#undef _setjmp
-
 #ifdef emacs
 char *_getpty();
 #endif
diff --git a/src/s/usg5-4-common.h b/src/s/usg5-4-common.h
index 6ead01d3712..12506bd8d08 100644
--- a/src/s/usg5-4-common.h
+++ b/src/s/usg5-4-common.h
@@ -20,11 +20,6 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
-/* setjmp and longjmp can safely replace _setjmp and _longjmp,
-   but they will run slower.  */
-#define _setjmp setjmp
-#define _longjmp longjmp
-
 /* Get FIONREAD from <sys/filio.h>.  Get <sys/ttold.h> to get struct tchars.
    But get <termio.h> first to make sure ttold.h doesn't interfere.  */
 #include <sys/wait.h>