diff options
Diffstat (limited to 'src/elab_env.sml')
| -rw-r--r-- | src/elab_env.sml | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/src/elab_env.sml b/src/elab_env.sml index 711db166..9fbe7bd7 100644 --- a/src/elab_env.sml +++ b/src/elab_env.sml @@ -1114,24 +1114,7 @@ and hnormSgn env (all as (sgn, loc)) = case sgn of SgnError => all | SgnVar n => hnormSgn env (#2 (lookupSgnNamed env n)) - | SgnConst sgis => - let - (* This reshuffling was added to avoid some unfortunate unification behavior. - * In particular, in sub-signature checking, constraints might be unified, - * even when we don't expect them to be unifiable, deciding on bad values - * for unification variables and dooming later unification. - * By putting all the constraints _last_, we allow all the other unifications - * to happen first, hoping that no unification variables survive to confuse - * constraint unification. *) - - val (constraint, others) = List.partition - (fn (SgiConstraint _, _) => true - | _ => false) sgis - in - case constraint of - [] => all - | _ => (SgnConst (others @ constraint), loc) - end + | SgnConst _ => all | SgnFun _ => all | SgnProj (m, ms, x) => let |