cross join with empty right table causes error

[fgarcia-cnb]

Could not post image (blocked by work):

$results.principals.count is 0
$results.roles.count is 10

Join-object -LeftObject $results.roles -RightObject $results.principals -JoinType Cross

Error: InvalidOperation: You cannot call a method on a null-valued expression.

[iRon7]

Thanks for the feedback.
This issue appears to be specific to a cross join:

Minimal reproducible example

$results = ConvertFrom-Json @'
{
    "principals": [],
    "roles": [
        { "c": 5, "d": 6 },
        { "c": 7, "d": 8 }
    ]
}
'@

Join-object -LeftObject $results.roles -RightObject $results.principals -JoinType Cross
InvalidOperation: You cannot call a method on a null-valued expression.
InvalidOperation: You cannot call a method on a null-valued expression.
InvalidOperation: You cannot call a method on a null-valued expression.
InvalidOperation: You cannot call a method on a null-valued expression.

c d
- -


InvalidOperation: You cannot call a method on a null-valued expression.
InvalidOperation: You cannot call a method on a null-valued expression.
InvalidOperation: You cannot call a method on a null-valued expression.
InvalidOperation: You cannot call a method on a null-valued expression.

Join-object -LeftObject $results.roles -RightObject $results.principals
# Doesn't produce any errors

I will fix this in the next release

[iRon7]

Fixed in 3.8.4: there are no more errors (yet there is no output as principals is an empty array)