rewrite expression (equivalently) at request of Paul Eggert

diff --git a/lib/getdate.y b/lib/getdate.y
index 4b24cdc..a4c840a 100644 (file)
--- a/lib/getdate.y
+++ b/lib/getdate.y
@@ -1014,7 +1014,7 @@ get_date (const char *p, const time_t *now)
       if (! gmt)
        return -1;
       delta = pc.time_zone * 60 + difftm (gmt, &tm);
-      if ((Start - delta < Start) != (delta > 0))
+      if ((Start < Start - delta) != (delta < 0))
        return -1;      /* time_t overflow */
       Start -= delta;
     }