Using self.ATTRIBUTE where you shouldn't causes a panic

[dlanger]

➜ dan-xub2 /space/terratry/cos terraform --version
Terraform v0.6.9

Because I only skimmed the docs, I assumed you could use self.ATTRIBUTE anywhere it looked right - like this:

module "public_subnets" {
  source = "github.com/terraform-community-modules/tf_aws_public_subnet"
  name = "${var.service}-public"
  cidrs = "${lookup(var.subnet_assignments, self.name)}"
}

This causes a Go panic - crash.log here.

Having read the docs again, I see that this shouldn't work here ("To reference attributes of your own resource, the syntax is self.ATTRIBUTE...Note that this is only allowed/valid within provisioners."), but I'd expect it to fail more gracefully.

[dlanger]

Similar panic if I used something which didn't exist, like self.cats (as opposed to self.name).

[ghost]

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