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-rw-r--r--compiler/coreSyn/CoreSyn.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/coreSyn/CoreSyn.hs b/compiler/coreSyn/CoreSyn.hs
index 183495f7b5..c1ae518927 100644
--- a/compiler/coreSyn/CoreSyn.hs
+++ b/compiler/coreSyn/CoreSyn.hs
@@ -980,6 +980,8 @@ data Unfolding
| BootUnfolding -- ^ We have no information about the unfolding, because
-- this 'Id' came from an @hi-boot@ file.
+ -- See Note [Inlining and hs-boot files] for what
+ -- this is used for.
| OtherCon [AltCon] -- ^ It ain't one of these constructors.
-- @OtherCon xs@ also indicates that something has been evaluated