Re: segmentation fault after interrupting function that uses "time"

[Chet Ramey]

On 5/23/24 7:43 AM, Michael Maurer wrote:

> Bash Version: 5.2
> Patch Level: 15
> Release Status: release
>
> Description:
>         Calling a function that itself uses the keyword "time" to call another 
> function that performs a long task, and then interrupting with Ctrl+C before it is 
> complete, causes a segfault. Behavior varies depending on whether or not the output of 
> time is piped into another command, and whether the functions were sourced from a file or 
> typed in directly.
>          Seems similar to the bug previously reported here: 
> https://lists.gnu.org/archive/html/bug-bash/2019-07/msg00004.html

I can't reproduce this on macOS, RHEL 9, or Debian 12 with either the
latest devel branch or bash-5.2.26.

Here's a sample transcript from the Debian 12 instance:

admin@ip-172-29-1-176:~/build/bash-5.2.26$ ./bash
admin@ip-172-29-1-176:~/build/bash-5.2.26$ cd scratch/
admin@ip-172-29-1-176:~/build/bash-5.2.26/scratch$ foo ()  { sleep 10; echo 
'output from long task'; }
admin@ip-172-29-1-176:~/build/bash-5.2.26/scratch$ bar_1 () { time foo; }
admin@ip-172-29-1-176:~/build/bash-5.2.26/scratch$ bar_1
^C

real    0m5.780s
user    0m0.001s
sys     0m0.000s
admin@ip-172-29-1-176:~/build/bash-5.2.26/scratch$ bar_1
output from long task

real    0m10.002s
user    0m0.002s
sys     0m0.000s
admin@ip-172-29-1-176:~/build/bash-5.2.26/scratch$ echo $BASH_VERSION
5.2.26(1)-release
admin@ip-172-29-1-176:~/build/bash-5.2.26/scratch$ uname -a
Linux ip-172-29-1-176 6.1.0-21-cloud-amd64 #1 SMP PREEMPT_DYNAMIC Debian 
6.1.90-1 (2024-05-03) x86_64 GNU/Linux



--
``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/

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