Problem reported by Lars Ingebrigtsen in:
https://lists.gnu.org/r/emacs-devel/2019-05/msg00721.html
* lisp/calendar/time-date.el (date-to-time):
Use plain condition-case, not condition-case-unless-debug.
(let ((overflow-error '(error "Specified time is not representable")))
(if (equal err overflow-error)
(signal (car err) (cdr err))
- (condition-case-unless-debug err
+ (condition-case err
(encode-time (parse-time-string
(timezone-make-date-arpa-standard date)))
(error