1 files changed, 1 insertions, 0 deletions
diff --git a/vm_core.h b/vm_core.h
index feb71f08e1..9c304c806b 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -1137,6 +1137,7 @@ enum {
 #define RUBY_VM_INTERRUPTED(th) ((th)->interrupt_flag & ~(th)->interrupt_mask & (PENDING_INTERRUPT_MASK|TRAP_INTERRUPT_MASK))
 #define RUBY_VM_INTERRUPTED_ANY(th) ((th)->interrupt_flag & ~(th)->interrupt_mask)
 
+VALUE rb_exc_set_backtrace(VALUE exc, VALUE bt);
 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);