I think I've found a bug with Bash's handling of errexit.
The following code:
``` bash
#!/usr/bin/env bash
set -Eeuo pipefail
shopt -s huponexit
shopt -s inherit_errexit
function child_function {
return 1
}
function parent_function {
child_function
echo "parent noticed child exit code as $?"
}
function grandparent_function {
local ec
ec=0 && parent_function || ec="$?"
echo "grandparent noticed parent exit code as $ec"
}
grandparent_function
```
Will surprisingly output:
```
parent noticed child exit code as 1
grandparent noticed parent exit code as 0
```
Changing the code to:
``` bash
#!/usr/bin/env bash
set -Eeuo pipefail
shopt -s huponexit
shopt -s inherit_errexit
function child_function {
return 1
}
function parent_function {
child_function || return "$?"
echo "parent noticed child exit code as $?"
}
function grandparent_function {
local ec
ec=0 && parent_function || ec="$?"
echo "grandparent noticed parent exit code as $ec"
}
grandparent_function
```
Returns the expected result of:
```
grandparent noticed parent exit code as 1
```
Is there an additional setting that I need to set to fix this? Or is this a bug
in bash?
The reason I believe it is a bug, is that changing the code to not use the `||
ec="$?"` will cause each called function to exit on initial failure:
``` bash
#!/usr/bin/env bash
set -Eeuo pipefail
shopt -s huponexit
shopt -s inherit_errexit
function child_function {
return 1
}
function parent_function {
child_function
echo "parent noticed child exit code as $?"
}
function grandparent_function {
parent_function
echo "grandparent noticed parent exit code as $?"
}
grandparent_function
```
Outputs nothing and returns exit code 1
Cross-posted to https://stackoverflow.com/q/76861137/130638
Bash verison:
```
GNU bash, version 5.2.15(1)-release (aarch64-apple-darwin22.1.0)
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
```
