From ae5a42fb947d52ab86f5b0110c6e00dea2aae304 Mon Sep 17 00:00:00 2001
From: haixuanTao <tao.xavier@outlook.com>
Date: Thu, 26 Jan 2023 12:05:48 +0100
Subject: [PATCH] Adding `set_len` method to Buffer

Adding `set_len` enables to change the length value of the buffer.

This is required if `get_mut` changes the length of the buffer.
---
 src/buffer/immutable.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/buffer/immutable.rs b/src/buffer/immutable.rs
index 2a6fa2de72e..baefa6aa73e 100644
--- a/src/buffer/immutable.rs
+++ b/src/buffer/immutable.rs
@@ -153,6 +153,13 @@ impl<T> Buffer<T> {
         self.offset
     }
 
+    /// # Safety
+    /// The caller must ensure that the buffer was properly initialized up to `len`.
+    #[inline]
+    pub unsafe fn set_len(&mut self, len: usize) {
+        self.length = len;
+    }
+
     /// Returns a mutable reference to its underlying [`Vec`], if possible.
     ///
     /// This operation returns [`Some`] iff this [`Buffer`]: