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-rw-r--r--compiler/GHC/Unit/Module/ModSummary.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/Unit/Module/ModSummary.hs b/compiler/GHC/Unit/Module/ModSummary.hs
index c584385aef..1a8cddec61 100644
--- a/compiler/GHC/Unit/Module/ModSummary.hs
+++ b/compiler/GHC/Unit/Module/ModSummary.hs
@@ -91,7 +91,7 @@ data ModSummary
-- ^ Source imports of the module
ms_textual_imps :: [(Maybe FastString, Located ModuleName)],
-- ^ Non-source imports of the module from the module *text*
- ms_ghc_prim_import :: Bool,
+ ms_ghc_prim_import :: !Bool,
-- ^ Whether the special module GHC.Prim was imported explicitliy
ms_parsed_mod :: Maybe HsParsedModule,
-- ^ The parsed, nonrenamed source, if we have it. This is also