1 files changed, 3 insertions, 1 deletions
diff --git a/src/rt/rust_internal.h b/src/rt/rust_internal.h
index a89144d7..46ea843f 100644
--- a/src/rt/rust_internal.h
+++ b/src/rt/rust_internal.h
@@ -38,6 +38,7 @@ extern "C" {
 #error "Platform not supported."
 #endif
 
+#include "sync/sync.h"
 #include "sync/condition_variable.h"
 
 #ifndef __i386__
@@ -75,7 +76,7 @@ template <typename T>
 struct
 rc_base
 {
-    size_t ref_count;
+    int32_t ref_count;
 
     void ref() {
         ++ref_count;
@@ -151,6 +152,7 @@ public:
     T *& operator[](size_t offset);
     void push(T *p);
     T *pop();
+    T *peek();
     void trim(size_t fill);
     void swap_delete(T* p);
 };