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-rw-r--r--src/monomorphise.ml1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/monomorphise.ml b/src/monomorphise.ml
index 9f273cb1..3f8a40e6 100644
--- a/src/monomorphise.ml
+++ b/src/monomorphise.ml
@@ -3182,6 +3182,7 @@ let make_bitvector_env_casts env quant_kids (kid,i) exp =
if mut = Immutable then mk_cast var typ exp else exp) locals exp
let make_bitvector_cast_exp cast_name cast_env quant_kids typ target_typ exp =
+ if alpha_equivalent cast_env typ target_typ then exp else
let infer_arg_typ env f l typ =
let (typq, ctor_typ) = Env.get_union_id f env in
let quants = quant_items typq in