From 1732239a0061eae35ed79ee6c4d6d0e98f74ea77 Mon Sep 17 00:00:00 2001
From: Jacqueline Nabaglo <jakub@mirprotocol.org>
Date: Sun, 11 Dec 2022 11:02:19 -0800
Subject: [PATCH] Constrain memory channels in JUMPDEST (#844)

---
 evm/src/cpu/stack.rs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/evm/src/cpu/stack.rs b/evm/src/cpu/stack.rs
index 5c3d1576..42181e41 100644
--- a/evm/src/cpu/stack.rs
+++ b/evm/src/cpu/stack.rs
@@ -71,9 +71,13 @@ const STACK_BEHAVIORS: OpsColumnsView<Option<StackBehavior>> = OpsColumnsView {
         pushes: true,
         disable_other_channels: true,
     }),
-    gas: None,      // TODO
-    jumpdest: None, // TODO
-    push: None,     // TODO
+    gas: None, // TODO
+    jumpdest: Some(StackBehavior {
+        num_pops: 0,
+        pushes: false,
+        disable_other_channels: true,
+    }),
+    push: None, // TODO
     dup: None,
     swap: None,
     get_context: Some(StackBehavior {