1 files changed, 2 insertions, 0 deletions
diff --git a/vm_core.h b/vm_core.h
index e43f539699..c425ba52e2 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -684,6 +684,8 @@ extern rb_vm_t *ruby_current_vm;
 #define RUBY_VM_SET_FINALIZER_INTERRUPT(th) ((th)->interrupt_flag |= 0x04)
 #define RUBY_VM_INTERRUPTED(th) ((th)->interrupt_flag & 0x02)
 
+int rb_signal_buff_size(void);
+void rb_signal_exec(rb_thread_t *th, int sig);
 void rb_threadptr_check_signal(rb_thread_t *mth);
 void rb_threadptr_signal_raise(rb_thread_t *th, int sig);
 void rb_threadptr_signal_exit(rb_thread_t *th);