From f258a3e06ac408aebe7a7a497694729dc65a5e46 Mon Sep 17 00:00:00 2001
From: Haixuan Xavier Tao <tao.xavier@outlook.com>
Date: Tue, 7 Mar 2023 19:47:35 +0100
Subject: [PATCH] Added `set_len` method to Buffer (#1374)

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 943bc3b3be3..4e696a348f1 100644
--- a/src/buffer/immutable.rs
+++ b/src/buffer/immutable.rs
@@ -178,6 +178,13 @@ 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 [`Either::Right`] iff this [`Buffer`]: