From d53f9aeec1cc05350d5305d0c8125bf8b8f96299 Mon Sep 17 00:00:00 2001
From: Alexandru Gheorghe <alexandru.gheorghe@parity.io>
Date: Fri, 11 Jul 2025 11:58:33 +0300
Subject: [PATCH] fixup! memory-db: allow changing the default hasher (#224)

Signed-off-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io>
---
 memory-db/Cargo.toml |  2 +-
 memory-db/src/lib.rs | 12 ++++++------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/memory-db/Cargo.toml b/memory-db/Cargo.toml
index a25d06db..b8913a26 100644
--- a/memory-db/Cargo.toml
+++ b/memory-db/Cargo.toml
@@ -10,7 +10,7 @@ edition = "2018"
 [dependencies]
 hash-db = { version = "0.16.0", path = "../hash-db", default-features = false }
 hashbrown = "0.15.3"
-foldhash = "0.1.5"
+foldhash = { version = "0.1.5", default-features = false }
 
 [dev-dependencies]
 keccak-hasher = { path = "../test-support/keccak-hasher" }
diff --git a/memory-db/src/lib.rs b/memory-db/src/lib.rs
index 4c45b793..6dda2f0c 100644
--- a/memory-db/src/lib.rs
+++ b/memory-db/src/lib.rs
@@ -421,7 +421,7 @@ where
 	T: Default + PartialEq<T> + for<'a> From<&'a [u8]> + Clone + Send + Sync,
 	KF: Send + Sync + KeyFunction<H>,
 	KF::Key: Borrow<[u8]> + for<'a> From<&'a [u8]>,
-	S: BuildHasher + Default,
+	S: BuildHasher + Default + Send + Sync,
 {
 	fn get(&self, key: &H::Out) -> Option<T> {
 		match self.data.get(key.as_ref()) {
@@ -472,7 +472,7 @@ where
 	T: Default + PartialEq<T> + for<'a> From<&'a [u8]> + Clone + Send + Sync,
 	KF: Send + Sync + KeyFunction<H>,
 	KF::Key: Borrow<[u8]> + for<'a> From<&'a [u8]>,
-	S: BuildHasher + Default,
+	S: BuildHasher + Default + Send + Sync,
 {
 	fn get(&self, key: &H::Out) -> Option<T> {
 		PlainDB::get(self, key)
@@ -487,7 +487,7 @@ where
 	H: KeyHasher,
 	T: Default + PartialEq<T> + AsRef<[u8]> + for<'a> From<&'a [u8]> + Clone + Send + Sync,
 	KF: KeyFunction<H> + Send + Sync,
-	S: BuildHasher + Default,
+	S: BuildHasher + Default + Send + Sync,
 {
 	fn get(&self, key: &H::Out, prefix: Prefix) -> Option<T> {
 		if key == &self.hashed_null_node {
@@ -567,7 +567,7 @@ where
 	H: KeyHasher,
 	T: Default + PartialEq<T> + AsRef<[u8]> + for<'a> From<&'a [u8]> + Clone + Send + Sync,
 	KF: KeyFunction<H> + Send + Sync,
-	S: BuildHasher + Default,
+	S: BuildHasher + Default + Send + Sync,
 {
 	fn get(&self, key: &H::Out, prefix: Prefix) -> Option<T> {
 		HashDB::get(self, key, prefix)
@@ -583,7 +583,7 @@ where
 	T: Default + PartialEq<T> + for<'a> From<&'a [u8]> + Clone + Send + Sync,
 	KF: KeyFunction<H> + Send + Sync,
 	KF::Key: Borrow<[u8]> + for<'a> From<&'a [u8]>,
-	S: BuildHasher + Default,
+	S: BuildHasher + Default + Send + Sync,
 {
 	fn as_plain_db(&self) -> &dyn PlainDB<H::Out, T> {
 		self
@@ -598,7 +598,7 @@ where
 	H: KeyHasher,
 	T: Default + PartialEq<T> + AsRef<[u8]> + for<'a> From<&'a [u8]> + Clone + Send + Sync,
 	KF: KeyFunction<H> + Send + Sync,
-	S: BuildHasher + Default,
+	S: BuildHasher + Default + Send + Sync,
 {
 	fn as_hash_db(&self) -> &dyn HashDB<H, T> {
 		self