diff options
Diffstat (limited to 'checker/reduction.ml')
| -rw-r--r-- | checker/reduction.ml | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/checker/reduction.ml b/checker/reduction.ml index 9f7dec28..d040c3db 100644 --- a/checker/reduction.ml +++ b/checker/reduction.ml @@ -154,7 +154,8 @@ type conv_pb = let sort_cmp univ pb s0 s1 = match (s0,s1) with - | (Prop c1, Prop c2) -> if c1 = Pos & c2 = Null then raise NotConvertible + | (Prop c1, Prop c2) when pb = CUMUL -> if c1 = Pos & c2 = Null then raise NotConvertible + | (Prop c1, Prop c2) -> if c1 <> c2 then raise NotConvertible | (Prop c1, Type u) -> (match pb with CUMUL -> () |