diff options
| author |  Adam Chlipala <adam@chlipala.net> | 2011-12-18 11:29:13 -0500 |
|---|---|---|
| committer | Adam Chlipala <adam@chlipala.net> | 2011-12-18 11:29:13 -0500 |
| commit | 4eb93836d04d18f43d8c4360f290a7977d96c468 (patch) | |
| tree | ef38476a5b0199272d5dc20a65a306b4c7b2a112 /src/elab_ops.sml | |
| parent | 37cf82d0761088c469205b90e35569674707202f (diff) | |
Add a new scoping check for unification variables, to fix a type inference bug
Diffstat (limited to 'src/elab_ops.sml')
| -rw-r--r-- | src/elab_ops.sml | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/elab_ops.sml b/src/elab_ops.sml index 0af2f4e7..dc9f69a4 100644 --- a/src/elab_ops.sml +++ b/src/elab_ops.sml @@ -156,7 +156,7 @@ fun reset () = (identity := 0; fun hnormCon env (cAll as (c, loc)) = case c of - CUnif (nl, _, _, _, ref (SOME c)) => (#1 (hnormCon env (E.mliftConInCon nl c)), loc) + CUnif (nl, _, _, _, ref (Known c)) => (#1 (hnormCon env (E.mliftConInCon nl c)), loc) | CNamed xn => (case E.lookupCNamed env xn of @@ -277,7 +277,7 @@ fun hnormCon env (cAll as (c, loc)) = let fun cunif () = let - val r = ref NONE + val r = ref (Unknown (fn _ => true)) in (r, (CUnif (0, loc, (KType, loc), "_", r), loc)) end |