diff options
Diffstat (limited to 'kernel/reduction.ml')
| -rw-r--r-- | kernel/reduction.ml | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/reduction.ml b/kernel/reduction.ml index 00e8014f..46a469df 100644 --- a/kernel/reduction.ml +++ b/kernel/reduction.ml @@ -6,7 +6,7 @@ (* * GNU Lesser General Public License Version 2.1 *) (************************************************************************) -(* $Id: reduction.ml 13354 2010-07-29 16:44:45Z barras $ *) +(* $Id: reduction.ml 13449 2010-09-22 19:31:50Z glondu $ *) open Util open Names @@ -176,9 +176,11 @@ type conv_pb = let sort_cmp pb s0 s1 cuniv = match (s0,s1) with - | (Prop c1, Prop c2) -> + | (Prop c1, Prop c2) when pb = CUMUL -> if c1 = Null or c2 = Pos then cuniv (* Prop <= Set *) else raise NotConvertible + | (Prop c1, Prop c2) -> + if c1 = c2 then cuniv else raise NotConvertible | (Prop c1, Type u) when pb = CUMUL -> assert (is_univ_variable u); cuniv | (Type u1, Type u2) -> assert (is_univ_variable u2); |