diff options
Diffstat (limited to 'compiler/GHC/Tc/Validity.hs')
| -rw-r--r-- | compiler/GHC/Tc/Validity.hs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/GHC/Tc/Validity.hs b/compiler/GHC/Tc/Validity.hs index 4dc4161664..97f9a8384f 100644 --- a/compiler/GHC/Tc/Validity.hs +++ b/compiler/GHC/Tc/Validity.hs @@ -21,6 +21,7 @@ module GHC.Tc.Validity ( ) where import GHC.Prelude +import GHC.Data.FastString import GHC.Data.Maybe @@ -2274,7 +2275,7 @@ checkConsistentFamInst (InClsInst { ai_class = clas tidyTypes tidy_env2 ax_arg_tys mk_wildcard at_tv = mkTyVarTy (mkTyVar tv_name (tyVarKind at_tv)) - tv_name = mkInternalName (mkAlphaTyVarUnique 1) (mkTyVarOcc "_") noSrcSpan + tv_name = mkInternalName (mkAlphaTyVarUnique 1) (mkTyVarOccFS (fsLit "_")) noSrcSpan -- For check_match, bind_me, see -- Note [Matching in the consistent-instantiation check] |