1 files changed, 1 insertions, 0 deletions
diff --git a/vm_core.h b/vm_core.h
index 27961287b0..cc450c5790 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -702,6 +702,7 @@ void rb_threadptr_signal_raise(rb_thread_t *th, int sig);
 void rb_threadptr_signal_exit(rb_thread_t *th);
 void rb_threadptr_execute_interrupts(rb_thread_t *);
 void rb_threadptr_interrupt(rb_thread_t *th);
+void rb_threadptr_unlock_all_locking_mutexes(rb_thread_t *th);
 
 void rb_thread_lock_unlock(rb_thread_lock_t *);
 void rb_thread_lock_destroy(rb_thread_lock_t *);