From d7fcf8216a03e5256a1649b22b3927e8a12bd503 Mon Sep 17 00:00:00 2001
From: Andrew Walbran <qwandor@google.com>
Date: Tue, 17 Jan 2023 16:21:02 +0000
Subject: [PATCH] Mutable statics are generally a bad idea.

---
 src/unsafe/mutable-static-variables.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/unsafe/mutable-static-variables.md b/src/unsafe/mutable-static-variables.md
index 2560bd54..80f60d15 100644
--- a/src/unsafe/mutable-static-variables.md
+++ b/src/unsafe/mutable-static-variables.md
@@ -26,3 +26,10 @@ fn main() {
     unsafe { println!("COUNTER: {}", COUNTER); }  // Potential data race!
 }
 ```
+
+<details>
+
+Using a mutable static is generally a bad idea, but there are some cases where it might make sense
+in low-level `no_std` code, such as implementing a heap allocator or working with some C APIs.
+
+</details>