diff options
Diffstat (limited to 'compiler/typecheck/TcSimplify.hs')
| -rw-r--r-- | compiler/typecheck/TcSimplify.hs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/typecheck/TcSimplify.hs b/compiler/typecheck/TcSimplify.hs index a19ceaa39d..b99823e728 100644 --- a/compiler/typecheck/TcSimplify.hs +++ b/compiler/typecheck/TcSimplify.hs @@ -18,6 +18,7 @@ module TcSimplify( import Bag import Class ( Class, classKey, classTyCon ) import DynFlags ( WarningFlag ( Opt_WarnMonomorphism ) + , WarnReason ( Reason ) , DynFlags( solverIterations ) ) import Inst import ListSetOps @@ -742,7 +743,7 @@ decideQuantification apply_mr sigs name_taus constraints -- Warn about the monomorphism restriction ; warn_mono <- woptM Opt_WarnMonomorphism ; let mr_bites = constrained_tvs `intersectsVarSet` zonked_tkvs - ; warnTc (warn_mono && mr_bites) $ + ; warnTc (Reason Opt_WarnMonomorphism) (warn_mono && mr_bites) $ hang (text "The Monomorphism Restriction applies to the binding" <> plural bndrs <+> text "for" <+> pp_bndrs) 2 (text "Consider giving a type signature for" |