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-rw-r--r--compiler/GHC/Core/Subst.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/Core/Subst.hs b/compiler/GHC/Core/Subst.hs
index 3d93084fc4..36f3bad0d4 100644
--- a/compiler/GHC/Core/Subst.hs
+++ b/compiler/GHC/Core/Subst.hs
@@ -626,7 +626,7 @@ substIdInfo subst new_id info
`setUnfoldingInfo` substUnfolding subst old_unf)
where
old_rules = ruleInfo info
- old_unf = unfoldingInfo info
+ old_unf = realUnfoldingInfo info
nothing_to_do = isEmptyRuleInfo old_rules && not (hasCoreUnfolding old_unf)
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