Subject: bug#27779: #27779; C stack overflow from `read' on deeply nested lisp object.

From: Noam Postavsky <[email-masked]>
Date: Wed, 01 May 2019 22:30:17 -0400

Vasilij Schneidermann <[email-masked]> writes:

> I've run into this issue today when loading up undo-tree on Emacs 26.1.

I'm wondering if Paul's patch at https://debbugs.gnu.org/31995#21 (which
is in Emacs 26.2) effectively fixes this for practical use of undo-tree
history?  That is, we know stack overflow is still possible for a
sufficiently deep nested object, but that patch should make it possible
for Emacs to read much deeper objects without overflowing.