Fix bug when time_t is unsigned and as wide as intmax_t.

* lisp.h (WAIT_READING_MAX): New macro.
* dispnew.c (Fsleep_for, sit_for):
* keyboard.c (kbd_buffer_get_event):
* process.c (Faccept_process_output):
Use it to avoid bogus compiler warnings with obsolescent GCC versions.
This improves on the previous patch, which introduced a bug
when time_t is unsigned and as wide as intmax_t.
See <http://bugs.gnu.org/9000#51>.

1 files changed, 1 insertions, 3 deletions

diff --git a/src/process.c b/src/process.c
index b41a77f58fd..457a1a9c7ea 100644
--- a/src/process.c
+++ b/src/process.c
@@ -3996,9 +3996,7 @@ Return non-nil if we received any output before the timeout expired.  */)
           if (0 < XFLOAT_DATA (seconds))
             {
               EMACS_TIME t = EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds));
-
-              secs = EMACS_SECS (t);
-              secs = min (secs, INTMAX_MAX);
+              secs = min (EMACS_SECS (t), WAIT_READING_MAX);
               nsecs = EMACS_NSECS (t);
             }
         }