Don't mishandle year-9999 dates.

* lisp/calendar/parse-time.el (parse-time-rules):
Allow years up to most-positive-fixnum.
* lisp/calendar/time-date.el (date-to-time):
Pass "Specified time is not representable" errors through.
* lisp/url/url-cookie.el (url-cookie-expired-p): Treat out-of-range
expiration dates as if they were far in the future.
* src/editfns.c (decode_time_components): Store an invalid timespec
on overflow, instead of returning false, so that the caller can
distinguish overflow from other errors.
(lisp_time_argument, lisp_seconds_argument): If the time is out
of range, signal a time overflow instead of an invalid time spec.
* src/keyboard.c (decode_timer): Treat time overflow like other
timespec errors.

Fixes: debbugs:18176

1 files changed, 9 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index dce13035766..b0768dd5489 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,14 @@
 2014-08-03  Paul Eggert  <eggert@cs.ucla.edu>
 
+        Don't mishandle year-9999 dates (Bug#18176).
+        * editfns.c (decode_time_components): Store an invalid timespec
+        on overflow, instead of returning false, so that the caller can
+        distinguish overflow from other errors.
+        (lisp_time_argument, lisp_seconds_argument): If the time is out
+        of range, signal a time overflow instead of an invalid time spec.
+        * keyboard.c (decode_timer): Treat time overflow like other
+        timespec errors.
+
         Avoid undefined behavior with signed left shift.
         Caught by 'gcc -fsanitize=undefined'.
         * dispextern.h, scroll.c (scrolling_max_lines_saved, scrolling_1):