GNU bug report logs - #44128
[feature/native-comp]; When invoking a symlink to the 'emacs' binary Emacs fails to start

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Message #34 received at 44128 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Phil Sainty <psainty <at> orcon.net.nz>
Cc: jonas <at> bernoul.li, 44128 <at> debbugs.gnu.org, eli <at> gnu.org, akrl <at> sdf.org
Subject: Re: bug#44128: [feature/native-comp]
Date: Thu, 15 Apr 2021 16:52:01 +0300

> From: Phil Sainty <psainty <at> orcon.net.nz>
> Cc: akrl <at> sdf.org, jonas <at> bernoul.li, 44128 <at> debbugs.gnu.org, eli <at> gnu.org
> Date: Fri, 16 Apr 2021 01:01:08 +1200
> 
> I'll add that the following two results suggest that the code
> which (this version of) Emacs tries to load or run might vary
> depending on the files which happen to be in the CWD at the time.
> 
> I think at best this may result in failures or inconsistencies
> as I've encountered, and at worst it's probably exploitable.
> 
> Surely the start-up process shouldn't be looking in the CWD
> for anything?

I'm not sure I see how you reach that conclusion.  Isn't
/home/phil/emacs/native-comp/usr/local/bin/ on your PATH?  If not, how
come the Emacs executable in that directory gets invoked?  Or maybe
you have "." in your PATH?

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