From f233dc0687143025d375fbc3d3ea64f17ecd7d99 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Sun, 11 Nov 2018 10:12:44 +0100
Subject: [PATCH 1/2] Rc should be fixed

---
 tests/run-pass/rc.rs | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/tests/run-pass/rc.rs b/tests/run-pass/rc.rs
index f4a8855bea..0bf7075031 100644
--- a/tests/run-pass/rc.rs
+++ b/tests/run-pass/rc.rs
@@ -1,6 +1,3 @@
-// FIXME: Disabled due to https://github.com/rust-lang/rust/issues/55747
-// ignore-test
-
 use std::cell::RefCell;
 use std::rc::Rc;
 

From e7aa5c68ffc221ee07d37ee1d29b96282729b7fe Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Mon, 12 Nov 2018 08:54:12 +0100
Subject: [PATCH 2/2] Update rustc for AllocationExtra trait

Based on https://github.com/solson/miri/pull/493 but there were more conflicts
than code so I opted not to cherry-pick.
---
 rust-version           |  2 +-
 src/lib.rs             | 18 ------------------
 src/stacked_borrows.rs | 19 +++++++++++--------
 3 files changed, 12 insertions(+), 27 deletions(-)

diff --git a/rust-version b/rust-version
index 0ad8158724..fb6d167ec6 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-nightly-2018-11-08
+nightly-2018-11-12
diff --git a/src/lib.rs b/src/lib.rs
index 134986c814..ab34841df8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -446,24 +446,6 @@ impl<'a, 'mir, 'tcx> Machine<'a, 'mir, 'tcx> for Evaluator<'tcx> {
         Cow::Owned(alloc)
     }
 
-    #[inline(always)]
-    fn memory_read(
-        alloc: &Allocation<Borrow, Self::AllocExtra>,
-        ptr: Pointer<Borrow>,
-        size: Size,
-    ) -> EvalResult<'tcx> {
-        alloc.extra.memory_read(ptr, size)
-    }
-
-    #[inline(always)]
-    fn memory_written(
-        alloc: &mut Allocation<Borrow, Self::AllocExtra>,
-        ptr: Pointer<Borrow>,
-        size: Size,
-    ) -> EvalResult<'tcx> {
-        alloc.extra.memory_written(ptr, size)
-    }
-
     #[inline(always)]
     fn memory_deallocated(
         alloc: &mut Allocation<Borrow, Self::AllocExtra>,
diff --git a/src/stacked_borrows.rs b/src/stacked_borrows.rs
index e1abcb20af..475033d74c 100644
--- a/src/stacked_borrows.rs
+++ b/src/stacked_borrows.rs
@@ -5,7 +5,7 @@ use rustc::hir;
 
 use crate::{
     EvalResult, MiriEvalContext, HelpersEvalContextExt,
-    MemoryKind, MiriMemoryKind, RangeMap, AllocId,
+    MemoryKind, MiriMemoryKind, RangeMap, AllocId, Allocation, AllocationExtra,
     Pointer, PlaceTy, MPlaceTy,
 };
 
@@ -343,27 +343,30 @@ impl<'tcx> Stacks {
 }
 
 /// Hooks and glue
-impl<'tcx> Stacks {
+impl AllocationExtra<Borrow> for Stacks {
     #[inline(always)]
-    pub fn memory_read(
-        &self,
+    fn memory_read<'tcx>(
+        alloc: &Allocation<Borrow, Stacks>,
         ptr: Pointer<Borrow>,
         size: Size,
     ) -> EvalResult<'tcx> {
         // Reads behave exactly like the first half of a reborrow-to-shr
-        self.use_and_maybe_re_borrow(ptr, size, UsageKind::Read, None)
+        alloc.extra.use_and_maybe_re_borrow(ptr, size, UsageKind::Read, None)
     }
 
     #[inline(always)]
-    pub fn memory_written(
-        &mut self,
+    fn memory_written<'tcx>(
+        alloc: &mut Allocation<Borrow, Stacks>,
         ptr: Pointer<Borrow>,
         size: Size,
     ) -> EvalResult<'tcx> {
         // Writes behave exactly like the first half of a reborrow-to-mut
-        self.use_and_maybe_re_borrow(ptr, size, UsageKind::Write, None)
+        alloc.extra.use_and_maybe_re_borrow(ptr, size, UsageKind::Write, None)
     }
+}
 
+impl<'tcx> Stacks {
+    #[inline(always)]
     pub fn memory_deallocated(
         &mut self,
         ptr: Pointer<Borrow>,