[kvm-unit-tests RFC PATCH 04/17] shellcheck: Fix SC2094

[Andrew Jones]

On Fri, Apr 05, 2024 at 07:00:36PM +1000, Nicholas Piggin wrote:
>   SC2094 (info): Make sure not to read and write the same file in the same
>   pipeline.
> 
> This is not as clearly bad as overwriting an input file with >, but
> could appended characters possibly be read in from the input
> redirection?
> 
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
> ---
>  scripts/arch-run.bash | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash
> index 1901a929f..472c31b08 100644
> --- a/scripts/arch-run.bash
> +++ b/scripts/arch-run.bash
> @@ -492,6 +492,8 @@ env_file ()
>  
>  env_errata ()
>  {
> +	local new_env
> +
>  	if [ "$ACCEL" = "tcg" ]; then
>  		export "ERRATA_FORCE=y"
>  	elif [ "$ERRATATXT" ] && [ ! -f "$ERRATATXT" ]; then
> @@ -500,7 +502,8 @@ env_errata ()
>  	elif [ "$ERRATATXT" ]; then
>  		env_generate_errata
>  	fi
> -	sort <(env | grep '^ERRATA_') <(grep '^ERRATA_' $KVM_UNIT_TESTS_ENV) | uniq -u >>$KVM_UNIT_TESTS_ENV
> +	new_env=$(sort <(env | grep '^ERRATA_') <(grep '^ERRATA_' $KVM_UNIT_TESTS_ENV) | uniq -u)
> +	echo "$new_env" >>$KVM_UNIT_TESTS_ENV
>  }
>  
>  env_generate_errata ()
> -- 
> 2.43.0
>

Reviewed-by: Andrew Jones <andrew.jones at linux.dev>