GNU bug report logs - #27779
26.0.50: read -- Re-entering top level after C stack overflow

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From: Noam Postavsky <npostavs <at> gmail.com>
To: Vasilij Schneidermann <mail <at> vasilij.de>
Cc: Paul Eggert <eggert <at> cs.ucla.edu>, Keith David Bershatsky <esq <at> lawlist.com>, 27779 <at> debbugs.gnu.org, Noam Postavsky <npostavs <at> users.sourceforge.net>
Subject: bug#27779: #27779; C stack overflow from `read' on deeply nested lisp object.
Date: Wed, 01 May 2019 22:30:17 -0400

Vasilij Schneidermann <mail <at> vasilij.de> 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.

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