From bb22e983b6e7e66d241026112d09fba2d5d5dd1c Mon Sep 17 00:00:00 2001
From: Tony Arcieri <bascule@gmail.com>
Date: Sat, 27 Dec 2025 23:11:52 -0700
Subject: [PATCH] cmov: address truncation lint for `Cmov` impl for `u8`

---
 cmov/src/lib.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/cmov/src/lib.rs b/cmov/src/lib.rs
index 5000a662..2cfdd9d8 100644
--- a/cmov/src/lib.rs
+++ b/cmov/src/lib.rs
@@ -70,21 +70,21 @@ pub trait CmovEq {
     }
 }
 
-// TODO(tarcieri): address truncation lint
-#[allow(clippy::cast_possible_truncation)]
 impl Cmov for u8 {
     #[inline]
     fn cmovnz(&mut self, value: &Self, condition: Condition) {
         let mut tmp = *self as u16;
         tmp.cmovnz(&(*value as u16), condition);
-        *self = tmp as u8;
+        debug_assert!(tmp <= u8::MAX as u16);
+        *self = (tmp & 0xFF) as u8;
     }
 
     #[inline]
     fn cmovz(&mut self, value: &Self, condition: Condition) {
         let mut tmp = *self as u16;
         tmp.cmovz(&(*value as u16), condition);
-        *self = tmp as u8;
+        debug_assert!(tmp <= u8::MAX as u16);
+        *self = (tmp & 0xFF) as u8;
     }
 }