Incorrect validation errors in user-defined functions when using recently added builtin functions (createObject etc.)

It seems that the validation logic for user-defined functions does not recognize the four new builtin functions that have recently been added (https://github.com/MicrosoftDocs/azure-docs/commit/be56ab92a33c673e858fc812339ea0610dafcfc1, https://github.com/microsoft/vscode-azurearmtools/issues/1043#issuecomment-710433636).

This template

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {},
    "functions": [
        {
            "namespace": "test",
            "members": {
                "testNewFunctions": {
                    "parameters": [],
                    "output": {
                        "value": "[
                            createArray(
                                true(),
                                false(),
                                null(),
                                createObject('name', 'foo')
                            )]",
                        "type": "array"
                    }
                }
            }
        }
    ],
    "resources": [],
    "outputs": {
        "result": {
            "type": "array",
            "value": "[test.testNewFunctions()]"
        }
    }
}

triggers this warning in VSCode: Template validation failed: The template function 'testNewFunctions' at line '11' and column '31' is not valid. These function calls are not supported in a function definition: 'true,false,null,createObject'. Please see https://aka.ms/arm-template/#functions for usage details.

but the deployment actually succeeds:

> New-AzResourceGroupDeployment -Name 'test' -ResourceGroupName 'test-rg' -TemplateFile .\test.json

DeploymentName          : test
ResourceGroupName       : test-rg
ProvisioningState       : Succeeded
Timestamp               : 2021-02-01 13:31:24
Mode                    : Incremental
TemplateLink            :
Parameters              :
Outputs                 :
                          Name             Type                       Value
                          ===============  =========================  ==========
                          result           Array                      [
                            true,
                            false,
                            null,
                            {
                              "name": "foo"
                            }
                          ]

DeploymentDebugLogLevel :

msazurermtools.azurerm-vscode-tools extension version: 0.14.0

[jberezanski-mdg]

Thank you, it seems to be working fine.

[StephenWeatherford]

@jberezanski-mdg This was released on Monday. Let us know if you’re still having problems, thanks.