From fd88db73398a5e7abe4eb47faef3859163ebc11b Mon Sep 17 00:00:00 2001
From: "Jeff Washington (jwash)"
 <75863576+jeffwashington@users.noreply.github.com>
Date: Fri, 14 May 2021 15:20:59 -0500
Subject: [PATCH] ancestors::new -> default (#17195)

---
 runtime/benches/accounts.rs |  2 +-
 runtime/src/accounts_db.rs  | 14 +++++++-------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/runtime/benches/accounts.rs b/runtime/benches/accounts.rs
index dec7cc4e0c..99f60c6705 100644
--- a/runtime/benches/accounts.rs
+++ b/runtime/benches/accounts.rs
@@ -238,7 +238,7 @@ fn bench_concurrent_read_write(bencher: &mut Bencher) {
                 let i = rng.gen_range(0, pubkeys.len());
                 test::black_box(
                     accounts
-                        .load_without_fixed_root(&Ancestors::new(), &pubkeys[i])
+                        .load_without_fixed_root(&Ancestors::default(), &pubkeys[i])
                         .unwrap(),
                 );
             }
diff --git a/runtime/src/accounts_db.rs b/runtime/src/accounts_db.rs
index c6fe7c65a7..4fff7e80ee 100644
--- a/runtime/src/accounts_db.rs
+++ b/runtime/src/accounts_db.rs
@@ -7507,7 +7507,7 @@ pub mod tests {
                             db.store_uncached(slot, &[(&pubkey, &account)]);
 
                             let (account, slot) = db
-                                .load_without_fixed_root(&Ancestors::new(), &pubkey)
+                                .load_without_fixed_root(&Ancestors::default(), &pubkey)
                                 .unwrap_or_else(|| {
                                     panic!("Could not fetch stored account {}, iter {}", pubkey, i)
                                 });
@@ -8937,7 +8937,7 @@ pub mod tests {
 
         // Should still be able to find zero lamport account in slot 1
         assert_eq!(
-            db.load_without_fixed_root(&Ancestors::new(), &account_key),
+            db.load_without_fixed_root(&Ancestors::default(), &account_key),
             Some((zero_lamport_account, 1))
         );
     }
@@ -8953,7 +8953,7 @@ pub mod tests {
 
         // Load with no ancestors and no root will return nothing
         assert!(db
-            .load_without_fixed_root(&Ancestors::new(), &key)
+            .load_without_fixed_root(&Ancestors::default(), &key)
             .is_none());
 
         // Load with ancestors not equal to `slot` will return nothing
@@ -8970,7 +8970,7 @@ pub mod tests {
         // Adding root will return the account even without ancestors
         db.add_root(slot);
         assert_eq!(
-            db.load_without_fixed_root(&Ancestors::new(), &key),
+            db.load_without_fixed_root(&Ancestors::default(), &key),
             Some((account0, slot))
         );
     }
@@ -8998,7 +8998,7 @@ pub mod tests {
         db.add_root(slot);
         db.flush_accounts_cache(true, None);
         assert_eq!(
-            db.load_without_fixed_root(&Ancestors::new(), &key),
+            db.load_without_fixed_root(&Ancestors::default(), &key),
             Some((account0, slot))
         );
     }
@@ -9043,11 +9043,11 @@ pub mod tests {
         assert_eq!(db.accounts_cache.num_slots(), 1);
         assert!(db.accounts_cache.slot_cache(unrooted_slot).is_some());
         assert_eq!(
-            db.load_without_fixed_root(&Ancestors::new(), &key5),
+            db.load_without_fixed_root(&Ancestors::default(), &key5),
             Some((account0.clone(), root5))
         );
         assert_eq!(
-            db.load_without_fixed_root(&Ancestors::new(), &key6),
+            db.load_without_fixed_root(&Ancestors::default(), &key6),
             Some((account0, root6))
         );
     }