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-rw-r--r--pretyping/pretyping.ml3
1 files changed, 2 insertions, 1 deletions
diff --git a/pretyping/pretyping.ml b/pretyping/pretyping.ml
index 2360de8244..fe6b170181 100644
--- a/pretyping/pretyping.ml
+++ b/pretyping/pretyping.ml
@@ -329,7 +329,8 @@ let rec pretype tycon env isevars lvar lmeta = function
let j' = pretype tycon (push_rel var env) isevars lvar lmeta c2 in
{ uj_val = mkLetIn (name, j.uj_val, t, j'.uj_val) ;
uj_type = type_app (subst1 j.uj_val) j'.uj_type }
-
+
+(* Special Case for let constructions to avoid exponential behavior *)
| ROldCase (loc,false,po,c,[| f |]) ->
let cj = pretype empty_tycon env isevars lvar lmeta c in
let (IndType (indf,realargs) as indt) =