restrict cur_frame visibility

diff --git a/src/librustc_mir/interpret/memory.rs b/src/librustc_mir/interpret/memory.rs
index 71bb4b4ecd14e8d6a3f08a08ad6d99a37636fc7a..9a99f50cdfad5e81d8eefdbdb96d585e20a45def 100644 (file)
--- a/src/librustc_mir/interpret/memory.rs
+++ b/src/librustc_mir/interpret/memory.rs
@@ -268,7 +268,7 @@ pub struct Memory<'a, 'tcx, M: Machine<'tcx>> {
     writes_are_aligned: Cell<bool>,
 
     /// The current stack frame.  Used to check accesses against locks.
-    pub cur_frame: usize,
+    pub(super) cur_frame: usize,
 }
 
 impl<'a, 'tcx, M: Machine<'tcx>> Memory<'a, 'tcx, M> {