From 3cfbc09de00288af67fea8295ac855201e827af4 Mon Sep 17 00:00:00 2001
From: CPerezz <c.perezbaro@gmail.com>
Date: Tue, 10 Jan 2023 14:57:16 +0100
Subject: [PATCH] fix: Add missing `annotate_column` trait fn for Graph

---
 halo2_proofs/src/dev/graph.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/halo2_proofs/src/dev/graph.rs b/halo2_proofs/src/dev/graph.rs
index 18ef8154df..3315b8fcc8 100644
--- a/halo2_proofs/src/dev/graph.rs
+++ b/halo2_proofs/src/dev/graph.rs
@@ -99,6 +99,14 @@ impl<F: Field> Assignment<F> for Graph {
         Ok(())
     }
 
+    fn annotate_column<A, AR>(&mut self, _annotation: A, _column: Column<Any>)
+    where
+        A: FnOnce() -> AR,
+        AR: Into<String>,
+    {
+        // Do nothing
+    }
+
     fn query_instance(&self, _: Column<Instance>, _: usize) -> Result<Value<F>, Error> {
         Ok(Value::unknown())
     }