static: check for identifiers should only consider term level variables

Consider

{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE StaticPointers #-}

module Main where

import Data.Proxy
import GHC.StaticPtr

foo :: forall a. StaticPtr (Proxy a)
foo = static (Proxy :: Proxy a)

main :: IO ()
main = putStrLn "Hi"

This yields

    Only identifiers of top-level bindings can appear in the body of the static form:
      static (Proxy :: Proxy a)
    but the following identifiers were found instead:
      a

but a is a type-level variable and therefore by definition static.

Trac metadata

Trac field	Value
Version	8.0.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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