[Bug]: data "aws_default_tags" "tags" output return null instead empty map cause downstream function error.

[crjlty88]

Terraform Core Version

1.2.9

AWS Provider Version

4.36.0

Affected Resource(s)

data.aws_default_tags

Expected Behavior

data.aws_default_tags.example.tags returns empty map, this returns empty map in older versions.

Actual Behavior

data.aws_default_tags.example.tags returns null

Relevant Error/Panic Output Snippet

│   on .terraform\modules\jump_ec2_sg.context\main.tf line 41, in locals:
│   41:     } : k => v if lookup(data.aws_default_tags.provider.tags, k, null) == null || lookup(data.aws_default_tags.provider.tags, k, null) != v
│     ├────────────────
│     │ data.aws_default_tags.provider.tags is null
│
│ Invalid value for "inputMap" parameter: argument must not be null.

Terraform Configuration Files

data "aws_default_tags" "provider" {}

locals {
tags = {
for k, v in {
app_id = var.app_id
chargeback_id = local.chargeback_id
environment = local.workspace
product = var.product_name
} : k => v if lookup(data.aws_default_tags.provider.tags, k, null) == null || lookup(data.aws_default_tags.provider.tags, k, null) != v
}
all_tags = merge(local.tags, var.tags)
}

Steps to Reproduce

terraform init
terraform apply

Debug Output

No response

Panic Output

No response

Important Factoids

No response

References

No response

Would you like to implement a fix?

No response

[github-actions]

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[crjlty88]

I do suspect this commit cause the behavior change for this issue.

b88ec64#diff-b5fa0211b5d847acdd947ec2883f8d4b5c26ed49d43ce64e2df81d2bc9554b14R79

[crjlty88]

[ewbankkit]

For this configuration

provider "aws" {}

data "aws_default_tags" "test" {}

after terraform apply the corresponding state files are

v4.35.0

{
  "version": 4,
  "terraform_version": "1.0.9",
  "serial": 1,
  "lineage": "a36acc25-7b24-3722-9db9-d2a511f5a9bd",
  "outputs": {},
  "resources": [
    {
      "mode": "data",
      "type": "aws_default_tags",
      "name": "test",
      "provider": "provider[\"registry.terraform.io/hashicorp/aws\"]",
      "instances": [
        {
          "schema_version": 0,
          "attributes": {
            "id": "aws",
            "tags": {}
          },
          "sensitive_attributes": []
        }
      ]
    }
  ]
}

v4.36.0

{
  "version": 4,
  "terraform_version": "1.0.9",
  "serial": 1,
  "lineage": "4c80dd1c-6f90-5d8a-383d-a86f23481cd8",
  "outputs": {},
  "resources": [
    {
      "mode": "data",
      "type": "aws_default_tags",
      "name": "test",
      "provider": "provider[\"registry.terraform.io/hashicorp/aws\"]",
      "instances": [
        {
          "schema_version": 0,
          "attributes": {
            "id": "aws",
            "tags": null
          },
          "sensitive_attributes": []
        }
      ]
    }
  ]
}

[github-actions]

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