diff options
Diffstat (limited to 'compiler/utils/FastString.hs')
| -rw-r--r-- | compiler/utils/FastString.hs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/utils/FastString.hs b/compiler/utils/FastString.hs index 490eb138bf..651719a65a 100644 --- a/compiler/utils/FastString.hs +++ b/compiler/utils/FastString.hs @@ -198,6 +198,7 @@ instance IsString FastString where instance Monoid FastString where mempty = nilFS mappend = appendFS + mconcat = concatFS instance Show FastString where show fs = show (unpackFS fs) |