From 65152283844572add475b3f4f89a812596960067 Mon Sep 17 00:00:00 2001
From: Matt Bell <mappum@gmail.com>
Date: Fri, 18 Oct 2024 16:58:11 -0500
Subject: [PATCH] Prevent attaching children to Hash nodes in proofs

---
 src/proofs/tree.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/proofs/tree.rs b/src/proofs/tree.rs
index 64de4c2..b161d10 100644
--- a/src/proofs/tree.rs
+++ b/src/proofs/tree.rs
@@ -125,6 +125,10 @@ impl Tree {
             ));
         }
 
+        if let Node::Hash(_) = self.node {
+            return Err(Error::Attach("Tried to attach to Hash node".into()));
+        }
+
         self.height = self.height.max(child.height + 1);
 
         let hash = child.hash()?;