Subshell warning is not raised if pipefail is set

[mnp]

Shellcheck 0.10.0 will not warn SC2030 and SC2031 (variable assignment in a subshell) for this input. It will warn if the set -o pipefail is removed.

Is this correct behavior? The description of pipefail only seems to mention exit status of the pipeline, not scoping within.

#!/bin/bash

set -o pipefail       # SC will not warn if this is set

out=''
echo hello | while read -r i; do
    out=$i             # I expect SC2030 here, always
done
echo "$out"            # I expect SC2031 here, always

[wileyhy]

Could be a bug.

…

On Sat, Feb 1, 2025 at 12:06 PM Mitchell Perilstein < ***@***.***> wrote: Shellcheck 0.10.0 will not warn SC2030 and SC2031 for this input. It will warn if the set -o pipefail is removed. Is this correct behavior? The description of pipefail only seems to mention exit status of the pipeline, not scoping within. #!/bin/bash set -o pipefail # SC will not warn about the subshell variable assignment if this is set out=''echo hello | while read -r i; do out=$idoneecho "$out" — Reply to this email directly, view it on GitHub <#3134>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AUF2F2Y4DLJXL4AQ2HGHMM32NUSOBAVCNFSM6AAAAABWJTLYRSVHI2DSMVQWIX3LMV43ASLTON2WKOZSHAZDKNBQGI2DAMQ> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>