From abb1b4be378c841a350780752390ee546ea32999 Mon Sep 17 00:00:00 2001
From: TheRawMeatball <therawmeatball@gmail.com>
Date: Thu, 29 Apr 2021 12:51:29 +0300
Subject: [PATCH] Fix unsound for_each_mut

---
 crates/bevy_ecs/src/system/query.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/bevy_ecs/src/system/query.rs b/crates/bevy_ecs/src/system/query.rs
index 7158aed39dafe..a2f2e94be9a5a 100644
--- a/crates/bevy_ecs/src/system/query.rs
+++ b/crates/bevy_ecs/src/system/query.rs
@@ -206,7 +206,7 @@ where
     /// Runs `f` on each query result. This is faster than the equivalent iter() method, but cannot
     /// be chained like a normal [`Iterator`].
     #[inline]
-    pub fn for_each_mut(&self, f: impl FnMut(<Q::Fetch as Fetch<'w>>::Item)) {
+    pub fn for_each_mut(&mut self, f: impl FnMut(<Q::Fetch as Fetch<'w>>::Item)) {
         // SAFE: system runs without conflicts with other systems. same-system queries have runtime
         // borrow checks when they conflict
         unsafe {