GNU bug report logs - #28329
25.2; Eshell: 40M+ output: Stack overflow in regexp matcher

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Message #25 received at 28329 <at> debbugs.gnu.org (full text, mbox):

From: Pierre Neidhardt <ambrevar <at> gmail.com>
To: Noam Postavsky <npostavs <at> users.sourceforge.net>
Cc: 28329 <at> debbugs.gnu.org
Subject: Re: bug#28329: 25.2;
 Eshell: 40M+ output: Stack overflow in regexp matcher
Date: Sun, 05 Nov 2017 14:58:47 +0100

Alright, I run into this again while emerging qtwebengine on Gentoo.
Now I think about it, this is the only and systematic cause of the issue
for me.
I suspect that emerging / compiling Chrome or affiliated projects would
also trigger the issue.

This time I managed to save the output, 60M+ big.

I tried to following

- emacs -Q
- M-x eshell
- cat portage.output.log

It took about 2 hours to complete!  While it takes half a second to
paste to the buffer.
Damn! Eshell's filters are slow! :/

That being said, no issue doing that.  So the output "saved after the
fact" does not seem to produce the issue.

-- 
Pierre Neidhardt

Finagle's Seventh Law:
	The perversity of the universe tends toward a maximum.

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