From 4d82cd90f8919ad620b3dde793566b4ada281b2f Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Sat, 12 Apr 2025 13:54:09 +0200
Subject: [PATCH] Add a workaround for UB on arm64

---
 redox-rt/src/proc.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/redox-rt/src/proc.rs b/redox-rt/src/proc.rs
index c04897fb3a..26b730b861 100644
--- a/redox-rt/src/proc.rs
+++ b/redox-rt/src/proc.rs
@@ -647,6 +647,10 @@ impl MmapGuard {
 
         Ok(())
     }
+
+    // Without this inline(never), UB somewhere causes the flags to be set to 0 on arm64.
+    // FIXME Find the UB and fix it
+    #[inline(never)]
     pub unsafe fn map_mut_anywhere<'a>(
         fd: usize,
         offset: usize,