On Thu, Oct 26 2017, Paul Eggert <eggert@cs.ucla.edu> wrote:
> Thanks for reporting that. I installed the attached patch into the
> emacs-26 branch; please give it a try.

Thank you Paul, your diff fixes the crash.

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jca | PGP : 0x1524E7EE / 5135 92C1 AD36 5293 2BDF  DDCC 0DFA 74AE 1524 E7EE