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Diffstat (limited to 'compiler/GHC/Core/Utils.hs')
| -rw-r--r-- | compiler/GHC/Core/Utils.hs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/GHC/Core/Utils.hs b/compiler/GHC/Core/Utils.hs index 89824889ef..21ceb2a7bb 100644 --- a/compiler/GHC/Core/Utils.hs +++ b/compiler/GHC/Core/Utils.hs @@ -845,7 +845,8 @@ There are two exceptions where we avoid refining a DEFAULT case: __DEFAULT -> () Namely, we do _not_ want to match on `A`, as it doesn't exist at the value - level! + level! See wrinkle (W2b) in Note [Type data declarations] in GHC.Rename.Module + Note [Combine identical alternatives] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |