From 5805a293e8ba99f2adfd9c02ee6ad2532ad52fca Mon Sep 17 00:00:00 2001
From: Stiopa Koltsov <stepan.koltsov@gmail.com>
Date: Thu, 3 Nov 2022 01:53:52 +0000
Subject: [PATCH] Clarify allocated_bytes does not include headers

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

diff --git a/src/lib.rs b/src/lib.rs
index be68365..74dfcd4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1678,6 +1678,10 @@ impl Bump {
     /// on it only counting the sum of the sizes of the things
     /// you've allocated in the arena.
     ///
+    /// The allocated bytes do not include the size of bumpalo's metadata,
+    /// so the amount of memory requested from the Rust allocator is higher
+    /// than the returned value.
+    ///
     /// ## Example
     ///
     /// ```