On 03/28/2018 12:33 PM, Paul Eggert wrote:
> Unfortunately the new org code contains the expression (encode-time 0 
> 0 0 0 0 -50000), which won't work on Emacs platforms where time_t is 
> 32 bits or is unsigned, since such platforms cannot represent a time_t 
> value corresponding to the year -50000. 

I installed the attached patch into Emacs master to try to fix this. 
I'll CC: this to emacs-orgmode in the hopes that this won't get lost in 
the next merge to Emacs master.