From 989b1b91175fd3d00111aa352b6063eb8bffef3a Mon Sep 17 00:00:00 2001
From: Ryo Onodera <ryoqun@gmail.com>
Date: Wed, 15 Jul 2020 03:46:38 +0900
Subject: [PATCH] Use try_from

---
 programs/stake/src/stake_state.rs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/programs/stake/src/stake_state.rs b/programs/stake/src/stake_state.rs
index 8e2cf7e142..915447d59f 100644
--- a/programs/stake/src/stake_state.rs
+++ b/programs/stake/src/stake_state.rs
@@ -19,7 +19,7 @@ use solana_sdk::{
     stake_history::{StakeHistory, StakeHistoryEntry},
 };
 use solana_vote_program::vote_state::{VoteState, VoteStateVersions};
-use std::collections::HashSet;
+use std::{collections::HashSet, convert::TryFrom};
 
 #[derive(Debug, Serialize, Deserialize, PartialEq, Clone, Copy, AbiExample)]
 #[allow(clippy::large_enum_variant)]
@@ -462,8 +462,7 @@ impl Stake {
             .checked_div(point_value.points)
             .unwrap();
 
-        assert!(rewards <= u128::from(std::u64::MAX));
-        let rewards = rewards as u64;
+        let rewards = u64::try_from(rewards).unwrap();
 
         // don't bother trying to split if fractional lamports got truncated
         if rewards == 0 {