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Re: crash (unhandled SIGPIPE) on write to closed file descriptor


From: Chet Ramey
Subject: Re: crash (unhandled SIGPIPE) on write to closed file descriptor
Date: Mon, 22 Jul 2019 11:28:45 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

On 7/20/19 2:05 PM, Bonjour Abracadraba wrote:

> Bash Version: 5.0
> Patch Level: 3
> Release Status: release
> 
> Description:
>       Bash 2.04 through 5.0 crash when trying to write to a closed socket.
> It is expected for bash to give an user error, but it exits instead.

This seems like user error. The script's actions caused the socket to
close, the next write generates SIGPIPE as a result, and SIGPIPE is a fatal
signal.

If you want the script to survive the SIGPIPE it generates, trap SIGPIPE.

Chet

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



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