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Summary

-ddump-rn-ast doesn't seem to be producing any output

Steps to reproduce

With the following file

{-# LANGUAGE NamedFieldPuns #-}

data Thing a = MkThing {field :: a}

f :: Thing a -> a
f MkThing {field} = field

doing ghc -ddump-rn file.hs I get

[1 of 1] Compiling Main             ( sf.hs, sf.o )

==================== Renamer ====================
Main.f :: Main.Thing a_agv -> a_agv
Main.f Main.MkThing {field} = field_agw

data Main.Thing a_agu = Main.MkThing {field :: a_agu}

However, doing ghc -ddump-rn-ast file.hs I get

[1 of 1] Compiling Main             ( sf.hs, sf.o )

Is this a bug, or is there a hole in my understanding of what the -ast variant should print?

Environment

• GHC version used: 9.0.2