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Diffstat (limited to 'compiler/typecheck/TcInstDcls.hs')
| -rw-r--r-- | compiler/typecheck/TcInstDcls.hs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/typecheck/TcInstDcls.hs b/compiler/typecheck/TcInstDcls.hs index 198e9a258d..bc5e9ae244 100644 --- a/compiler/typecheck/TcInstDcls.hs +++ b/compiler/typecheck/TcInstDcls.hs @@ -820,7 +820,7 @@ tcDataFamInstHeader mb_clsinfo fam_tc imp_vars mb_bndrs fixity -- check there too! ; let scoped_tvs = imp_tvs ++ exp_tvs ; dvs <- candidateQTyVarsOfTypes (lhs_ty : mkTyVarTys scoped_tvs) - ; qtvs <- quantifyTyVars emptyVarSet dvs + ; qtvs <- quantifyTyVars dvs -- Zonk the patterns etc into the Type world ; (ze, qtvs) <- zonkTyBndrs qtvs |