[sr #111211] `pipefail` leak/disablement

[anonymous]

URL:
  <https://savannah.gnu.org/support/?111211>

                 Summary: `pipefail` leak/disablement
                   Group: The GNU Bourne-Again SHell
               Submitter: None
               Submitted: Mon 24 Mar 2025 07:47:14 AM UTC
                Category: None
                Priority: 5 - Normal
                Severity: 3 - Normal
                  Status: None
                 Privacy: Private
             Assigned to: None
        Originator Email: wod...@gmail.com
             Open/Closed: Open
         Discussion Lock: Any
        Operating System: GNU/Linux


    _______________________________________________________

Follow-up Comments:


-------------------------------------------------------
Date: Mon 24 Mar 2025 07:47:14 AM UTC By: Anonymous
= empty.sh =
#!/usr/bin/bash

set -x
echo '---' &>/dev/null
echo empty
echo '---' &>/dev/null
set +x

if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
    exit 0
else
    return 0
fi

= menus.sh =
#!/usr/bin/bash

set -x
echo '---' &>/dev/null
echo menu
echo '---' &>/dev/null
set +x

if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
    exit 0
else
    return 0
fi

= test_modules.sh =
#!/usr/bin/bash

set -o errexit
set -o nounset
set -o pipefail
set -o xtrace

export SHELLOPTS

function safe_source() {
    local saved_opts=$-
    local pipefail_on=0

    # Check if pipefail is set using 'shopt'
    if (set -o | grep -q 'pipefail *on'); then
        pipefail_on=1
    fi

    source "$1"

    # Restore flags
    [[ $saved_opts == *e* ]] && set -o errexit || set +o errexit
    [[ $saved_opts == *u* ]] && set -o nounset || set +o nounset
    [[ $saved_opts == *x* ]] && set -o xtrace || set +o xtrace

    # Restore pipefail
    if [[ $pipefail_on -eq 1 ]]; then
        set -o pipefail
    else
        set +o pipefail
    fi
}

bash -c 'set -o errexit -o nounset -o pipefail; bash -x './menus.sh'
>'./exec_menus.sh.log' 2>&1'

function source_menus() {
    echo "Before source: \$-=$-, SHELLOPTS=$SHELLOPTS"
    safe_source './menus.sh'
    echo "After source: \$-=$-, SHELLOPTS=$SHELLOPTS"
}

source_menus >'./src_menus.sh.log' 2>&1

bash -c 'set -o errexit -o nounset -o pipefail; bash -x './empty.sh'
>'./exec_empty.sh.log' 2>&1'

function source_empty() {
    echo "Before source: \$-=$-, SHELLOPTS=$SHELLOPTS"
    safe_source './empty.sh'
    echo "After source: \$-=$-, SHELLOPTS=$SHELLOPTS"
}

source_empty >'./src_empty.sh.log' 2>&1

exit 0

= src_menus.sh.log =
+ echo 'Before source: $-=ehuxB,
SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:nounset:pipefail:xtrace'
Before source: $-=ehuxB,
SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:nounset:pipefail:xtrace
+ safe_source ./menus.sh
+ local saved_opts=ehuxB
+ local pipefail_on=0
+ set -o
+ grep -q 'pipefail *on'
+ source ./menus.sh
++ set -x
++ echo ---
++ echo menu
menu
++ echo ---
++ set +x
+ [[ 0 -eq 1 ]]
+ set +o pipefail
+ echo 'After source: $-=ehuxB,
SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:nounset:xtrace'
After source: $-=ehuxB,
SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:nounset:xtrace








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