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Re: ${par@P} can cause segmentation faults
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From: |
Chet Ramey |
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Subject: |
Re: ${par@P} can cause segmentation faults |
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Date: |
Sat, 28 Aug 2021 12:24:33 -0400 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 |
On 8/28/21 4:07 AM, Emanuele Torre wrote:
Bash Version: 5.1
Patch Level: 8
Release Status: release
Description:
PS1=\${PS1@P}
makes bash segfault in interactive shells.
a=\${a@P};${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/