From 9399ffa6d1499ac67eeccfc460e75c72c00f6abe Mon Sep 17 00:00:00 2001
From: zhiqiangxu <652732310@qq.com>
Date: Wed, 2 Aug 2023 23:50:43 +0000
Subject: [PATCH] CommitteeCache.get_all_beacon_committees: set correct
 capacity to avoid realloc (#4557)

---
 consensus/types/src/beacon_state/committee_cache.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/consensus/types/src/beacon_state/committee_cache.rs b/consensus/types/src/beacon_state/committee_cache.rs
index bbe81b93008..64bf686f34e 100644
--- a/consensus/types/src/beacon_state/committee_cache.rs
+++ b/consensus/types/src/beacon_state/committee_cache.rs
@@ -174,7 +174,7 @@ impl CommitteeCache {
             .ok_or(Error::CommitteeCacheUninitialized(None))?;
 
         initialized_epoch.slot_iter(self.slots_per_epoch).try_fold(
-            Vec::with_capacity(self.slots_per_epoch as usize),
+            Vec::with_capacity(self.epoch_committee_count()),
             |mut vec, slot| {
                 vec.append(&mut self.get_beacon_committees_at_slot(slot)?);
                 Ok(vec)