Terraform: for_each crashes on null_resource with local-exec provisioner

[adarobin]

Terraform Version

Terraform v0.12.6
+ provider.null v2.1.2

Terraform Configuration Files

variable "test" {
    default = {
        foo = "bar"
    }
}

resource "null_resource" "test" {
    for_each = var.test

    triggers = {
        foo = each.key
    }

    provisioner "local-exec" {
        command = "echo ${each.value}"
    }
}

Debug Output

https://gist.github.com/adarobin/5c7a6449bd6c2a0ace6550f9f64219a7

Crash Output

https://gist.github.com/adarobin/16994b75a44f3bd8eff8efa9287d4d22

Expected Behavior

The apply was successful.

Actual Behavior

Terraform crashed

Steps to Reproduce

terraform init

terraform apply

Additional Context

Interestingly, this works and does not crash

variable "test" {
    default = {
        foo = "bar"
    }
}

resource "null_resource" "test" {
    for_each = var.test

    triggers = {
        foo = each.key
    }

    provisioner "local-exec" {
        command = "echo ${var.test[each.key]}"
    }
}

References

[pselle]

@adarobin Thank you for this report! I believe it's a duplicate of https://github.com/hashicorp/terraform/issues/22289, and there's a fix in master that will go out in the next release of Terraform (0.12.7), and I'll leave this open until that's out to help future reporters. Thank you!

[xbaran]

Same problem here.

[FrantisekLee]

The same problem...

[pselle]

Terraform 0.12.7 (with this fix) is now released! https://github.com/hashicorp/terraform/blob/v0.12.7/CHANGELOG.md

[hashibot[bot]]

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