From 02b33bb70118490777c29c84a4d304388feaacc0 Mon Sep 17 00:00:00 2001
From: Alessandro Decina <alessandro.d@gmail.com>
Date: Sun, 28 Jul 2024 09:34:13 +0000
Subject: [PATCH] VoteState::deserialize_into: drop previous collections before
 deserializing

---
 sdk/program/src/vote/state/mod.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sdk/program/src/vote/state/mod.rs b/sdk/program/src/vote/state/mod.rs
index 1fea6d1a4dbcbe..6730890593acaf 100644
--- a/sdk/program/src/vote/state/mod.rs
+++ b/sdk/program/src/vote/state/mod.rs
@@ -487,6 +487,11 @@ impl VoteState {
         input: &[u8],
         vote_state: &mut VoteState,
     ) -> Result<(), InstructionError> {
+        // assign empty collections to drop() old allocations if any
+        vote_state.votes = VecDeque::new();
+        vote_state.authorized_voters = AuthorizedVoters::default();
+        vote_state.epoch_credits = Vec::new();
+
         VoteState::deserialize_into_ptr(input, vote_state as *mut VoteState)
     }