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-rw-r--r--backend/Stackingtyping.v2
1 files changed, 1 insertions, 1 deletions
diff --git a/backend/Stackingtyping.v b/backend/Stackingtyping.v
index 6ef8669..b42dbbb 100644
--- a/backend/Stackingtyping.v
+++ b/backend/Stackingtyping.v
@@ -160,7 +160,7 @@ Proof.
apply wt_instrs_cons; auto.
constructor.
destruct o; simpl; congruence.
- rewrite H6. destruct o; reflexivity || congruence.
+ rewrite H6. symmetry. apply type_shift_stack_operation.
(* load *)
apply wt_instrs_cons; auto.
constructor; auto.