Re: [PATCH v3] scripts/check-local-export: avoid 'wait $!' for process substitution

From: Miles Chen
Date: Fri Jun 10 2022 - 12:57:40 EST


>Bash 4.4, released in 2016, supports 'wait $!' to check the exit status
>of a process substitution, but it seems too new.
>
>Some people using older bash versions (on CentOS 7, Ubuntu 16.04, etc.)
>reported an error like this:
>
> ./scripts/check-local-export: line 54: wait: pid 17328 is not a child of this shell

Thanks for fixing this!
I hit this issue and this patch fixes my problem.

Tested-by: Miles Chen <miles.chen@xxxxxxxxxxxx>

>
>I used the process substitution to avoid a pipeline, which executes each
>command in a subshell. If the while-loop is executed in the subshell
>context, variable changes within are lost after the subshell terminates.