[prev in list] [next in list] [prev in thread] [next in thread] 

List:       bash-bug
Subject:    Re: ${par@P} can cause segmentation faults
From:       Chet Ramey <chet.ramey () case ! edu>
Date:       2021-08-28 16:24:33
Message-ID: 39b5eb15-6ac5-54b8-23a4-5ea15dc97398 () case ! edu
[Download RAW message or body]

On 8/28/21 4:07 AM, Emanuele Torre wrote:

> Bash Version: 5.1
> Patch Level: 8
> Release Status: release
> 
> Description:
> 
>      PS1=\${PS1@P}
> 
>    makes bash segfault in interactive shells.
> 
>      a=\${a@P};${a@P}
> 
>    makes bash segfault also in non-interactive shells.

Yes. If you set up and execute an infinitely recursive expansion, you're
eventually going to run out of stack or data space and crash.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
		 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/


[prev in list] [next in list] [prev in thread] [next in thread]