From 86edc72c7efb3efbf43e3704ad56717a02253925 Mon Sep 17 00:00:00 2001
From: Noa <33094578+coolreader18@users.noreply.github.com>
Date: Wed, 3 Nov 2021 14:02:01 -0500
Subject: [PATCH] Fix miri UB

---
 vm/src/pyobjectrc.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/vm/src/pyobjectrc.rs b/vm/src/pyobjectrc.rs
index 02999e510..cfff137c4 100644
--- a/vm/src/pyobjectrc.rs
+++ b/vm/src/pyobjectrc.rs
@@ -57,11 +57,11 @@ type OnceBox<T> = once_cell::unsync::OnceCell<Box<T>>;
 struct Erased;
 
 struct PyObjVTable {
-    drop_dealloc: unsafe fn(&mut PyObject),
+    drop_dealloc: unsafe fn(*mut PyObject),
     debug: unsafe fn(&PyObject, &mut fmt::Formatter) -> fmt::Result,
 }
-unsafe fn drop_dealloc_obj<T: PyObjectPayload>(x: &mut PyObject) {
-    Box::from_raw(x as *mut PyObject as *mut PyInner<T>);
+unsafe fn drop_dealloc_obj<T: PyObjectPayload>(x: *mut PyObject) {
+    Box::from_raw(x as *mut PyInner<T>);
 }
 unsafe fn debug_obj<T: PyObjectPayload>(x: &PyObject, f: &mut fmt::Formatter) -> fmt::Result {
     let x = &*(x as *const PyObject as *const PyInner<T>);
@@ -683,7 +683,7 @@ impl PyObjectRef {
         }
 
         let drop_dealloc = self.0.vtable.drop_dealloc;
-        unsafe { drop_dealloc(self.ptr.as_mut()) }
+        unsafe { drop_dealloc(self.ptr.as_ptr()) }
     }
 }