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Re: Segfault when SIGPIPE and SIGINT used together

From: Chet Ramey
Subject: Re: Segfault when SIGPIPE and SIGINT used together
Date: Sat, 7 Oct 2017 17:48:41 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.3.0

On 10/6/17 6:58 PM, ANDERSON, CRAIG wrote:

> Repeat-By:
>         Running the following script:
> #!/bin/bash
> exec >& >(while read line; do echo "$line"; done)
> trap 'echo sigpipe' SIGPIPE
> trap 'echo sigint' SIGINT
> echo 'Sleeping 60 seconds, press Ctrl+C to segfault!'
> sleep 60

You have created a situation where you will get SIGPIPE over and over
again, running the SIGPIPE trap handler (each invocation of which generates
a SIGPIPE because the pipe to the process substitution is broken), until
the shell runs out of stack space.

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

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