From c496f0583dae8d928ac268c87801fb65072e967a Mon Sep 17 00:00:00 2001
From: Jubilee Young <workingjubilee@gmail.com>
Date: Tue, 16 Jul 2024 21:07:44 -0700
Subject: [PATCH] unix: Unsafe-wrap stack_overflow::cleanup

---
 library/std/src/sys/pal/unix/stack_overflow.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/library/std/src/sys/pal/unix/stack_overflow.rs b/library/std/src/sys/pal/unix/stack_overflow.rs
index 5ab6058d55a65..4b581d13897af 100644
--- a/library/std/src/sys/pal/unix/stack_overflow.rs
+++ b/library/std/src/sys/pal/unix/stack_overflow.rs
@@ -157,8 +157,11 @@ mod imp {
         mem::forget(handler);
     }
 
+    /// # Safety
+    /// Must be called only once
+    #[forbid(unsafe_op_in_unsafe_fn)]
     pub unsafe fn cleanup() {
-        drop_handler(MAIN_ALTSTACK.load(Ordering::Relaxed));
+        unsafe { drop_handler(MAIN_ALTSTACK.load(Ordering::Relaxed)) };
     }
 
     unsafe fn get_stack() -> libc::stack_t {