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-rw-r--r--compiler/GHC/Driver/Main.hs3
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/GHC/Driver/Main.hs b/compiler/GHC/Driver/Main.hs
index 97a47c8df6..a879e4b011 100644
--- a/compiler/GHC/Driver/Main.hs
+++ b/compiler/GHC/Driver/Main.hs
@@ -305,7 +305,8 @@ newHscEnv top_dir dflags = newHscEnvWithHUG top_dir dflags (homeUnitId_ dflags)
newHscEnvWithHUG :: FilePath -> DynFlags -> UnitId -> HomeUnitGraph -> IO HscEnv
newHscEnvWithHUG top_dir top_dynflags cur_unit home_unit_graph = do
- nc_var <- initNameCache 'r' knownKeyNames
+ knownKeyNames' <- knownKeyNames
+ nc_var <- initNameCache 'r' knownKeyNames'
fc_var <- initFinderCache
logger <- initLogger
tmpfs <- initTmpFs