1 files changed, 6 insertions, 1 deletions
diff --git a/src/rt/rust_task.h b/src/rt/rust_task.h
index fe19e06e657..783d46eaced 100644
--- a/src/rt/rust_task.h
+++ b/src/rt/rust_task.h
@@ -24,8 +24,13 @@ struct chan_handle {
 struct rust_box;
 
 struct stk_seg {
-    unsigned int valgrind_id;
+    stk_seg *next;
     uintptr_t limit;
+    unsigned int valgrind_id;
+#ifndef _LP64
+    uint32_t pad;
+#endif
+
     uint8_t data[];
 };