v1.16: Initialize LoadedPrograms::latest_root earlier (#34432)

* Fixes BankForks::new_from_banks() not setting the root of LoadedPrograms. --------- Co-authored-by: Alexander Meißner <[email protected]>
solana-labs · Dec 14, 2023 · 9cde446 · 9cde446
1 parent 3470119
commit 9cde446
Showing 1 changed file with 12 additions and 2 deletions.
diff --git a/runtime/src/bank_forks.rs b/runtime/src/bank_forks.rs
@@ -175,7 +175,7 @@ impl BankForks {
                 descendants.entry(parent).or_default().insert(*slot);
             }
         }
-        Self {
+        let bank_forks = Self {
             root: Arc::new(AtomicSlot::new(root)),
             banks,
             descendants,
@@ -184,7 +184,17 @@ impl BankForks {
             last_accounts_hash_slot: root,
             in_vote_only_mode: Arc::new(AtomicBool::new(false)),
             highest_slot_at_startup: 0,
-        }
+        };
+        let root_bank = bank_forks
+            .banks
+            .get(&root)
+            .expect("root bank didn't exist in bank_forks");
+        root_bank
+            .loaded_programs_cache
+            .write()
+            .unwrap()
+            .prune(&bank_forks, root);
+        bank_forks
     }
 
     pub fn insert(&mut self, mut bank: Bank) -> Arc<Bank> {