Re: [kvm-unit-tests RFC PATCH 06/17] shellcheck: Fix SC2155

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On Fri, Apr 05, 2024 at 07:00:38PM +1000, Nicholas Piggin wrote:
>   SC2155 (warning): Declare and assign separately to avoid masking
>   return values.
> 
> No bug identified.
> 
> Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx>
> ---
>  scripts/arch-run.bash | 10 +++++++---
>  scripts/runtime.bash  |  4 +++-
>  2 files changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash
> index f9d1fade9..ae4b06679 100644
> --- a/scripts/arch-run.bash
> +++ b/scripts/arch-run.bash
> @@ -411,7 +411,8 @@ initrd_cleanup ()
>  {
>  	rm -f $KVM_UNIT_TESTS_ENV
>  	if [ "$KVM_UNIT_TESTS_ENV_OLD" ]; then
> -		export KVM_UNIT_TESTS_ENV="$KVM_UNIT_TESTS_ENV_OLD"
> +		export KVM_UNIT_TESTS_ENV
> +		KVM_UNIT_TESTS_ENV="$KVM_UNIT_TESTS_ENV_OLD"
>  	else
>  		unset KVM_UNIT_TESTS_ENV
>  	fi
> @@ -423,7 +424,8 @@ initrd_create ()
>  	if [ "$ENVIRON_DEFAULT" = "yes" ]; then
>  		trap_exit_push 'initrd_cleanup'
>  		[ -f "$KVM_UNIT_TESTS_ENV" ] && export KVM_UNIT_TESTS_ENV_OLD="$KVM_UNIT_TESTS_ENV"
> -		export KVM_UNIT_TESTS_ENV=$(mktemp)
> +		export KVM_UNIT_TESTS_ENV
> +		KVM_UNIT_TESTS_ENV=$(mktemp)
>  		env_params
>  		env_file
>  		env_errata || return $?
> @@ -566,7 +568,9 @@ env_generate_errata ()
>  
>  trap_exit_push ()
>  {
> -	local old_exit=$(trap -p EXIT | sed "s/^[^']*'//;s/'[^']*$//")
> +	local old_exit
> +
> +	old_exit=$(trap -p EXIT | sed "s/^[^']*'//;s/'[^']*$//")
>  	trap -- "$1; $old_exit" EXIT
>  }
>  
> diff --git a/scripts/runtime.bash b/scripts/runtime.bash
> index f79c4e281..3b76aec9e 100644
> --- a/scripts/runtime.bash
> +++ b/scripts/runtime.bash
> @@ -15,7 +15,9 @@ extract_summary()
>  # We assume that QEMU is going to work if it tried to load the kernel
>  premature_failure()
>  {
> -    local log="$(eval "$(get_cmdline _NO_FILE_4Uhere_)" 2>&1)"
> +    local log
> +
> +    log="$(eval "$(get_cmdline _NO_FILE_4Uhere_)" 2>&1)"
>  
>      echo "$log" | grep "_NO_FILE_4Uhere_" |
>          grep -q -e "[Cc]ould not \(load\|open\) kernel" \
> -- 
> 2.43.0
>

Reviewed-by: Andrew Jones <andrew.jones@xxxxxxxxx>




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