From 037f46f7f078e63ca164d97c30d0d89f52281f93 Mon Sep 17 00:00:00 2001
From: topjohnwu <topjohnwu@gmail.com>
Date: Thu, 15 Jun 2023 04:00:32 -0700
Subject: [PATCH] Fix copy_cstr

---
 native/src/base/misc.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/native/src/base/misc.rs b/native/src/base/misc.rs
index b432dc5f4..73cb3351b 100644
--- a/native/src/base/misc.rs
+++ b/native/src/base/misc.rs
@@ -21,7 +21,7 @@ pub fn copy_cstr<T: AsRef<CStr> + ?Sized>(dest: &mut [u8], src: &T) -> usize {
     let src = src.as_ref().to_bytes_with_nul();
     let len = min(src.len(), dest.len());
     dest[..len].copy_from_slice(&src[..len]);
-    len
+    len - 1
 }
 
 struct BufFmtWriter<'a> {
@@ -68,7 +68,7 @@ macro_rules! bfmt {
 macro_rules! bfmt_cstr {
     ($buf:expr, $($args:tt)*) => {{
         let len = $crate::fmt_to_buf($buf, format_args!($($args)*));
-        #[allow(unused_unsafe)]
+        #[allow(unused_unsafe, clippy::unnecessary_mut_passed)]
         unsafe {
             $crate::Utf8CStr::from_bytes_unchecked($buf.get_unchecked(..(len + 1)))
         }