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-rw-r--r--compiler/GHC/Core/Coercion/Opt.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/GHC/Core/Coercion/Opt.hs b/compiler/GHC/Core/Coercion/Opt.hs
index 66ba8ee8ab..72c96c962a 100644
--- a/compiler/GHC/Core/Coercion/Opt.hs
+++ b/compiler/GHC/Core/Coercion/Opt.hs
@@ -594,6 +594,7 @@ opt_univ env sym prov role oty1 oty2
#endif
ProofIrrelProv kco -> ProofIrrelProv $ opt_co4_wrap env sym False Nominal kco
PluginProv _ -> prov
+ CorePrepProv -> prov
-------------
opt_transList :: HasDebugCallStack => InScopeSet -> [NormalCo] -> [NormalCo] -> [NormalCo]