1 files changed, 1 insertions, 0 deletions
diff --git a/vm_core.h b/vm_core.h
index ef770ab441..354603514e 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -1076,6 +1076,7 @@ typedef struct rb_thread_struct {
     rb_execution_context_t *ec;
 
     struct rb_thread_sched_item sched;
+    bool mn_schedulable;
     rb_atomic_t serial; // only for RUBY_DEBUG_LOG()
 
     VALUE last_status; /* $? */