1 files changed, 0 insertions, 1 deletions
diff --git a/vm_core.h b/vm_core.h
index 6f1107a6b1..9daabdab16 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -680,7 +680,6 @@ void rb_thread_wakeup_timer_thread(void);
 int ruby_thread_has_gvl_p(void);
 VALUE rb_make_backtrace(void);
 typedef int rb_backtrace_iter_func(void *, VALUE, int, VALUE);
-int rb_backtrace_each(rb_backtrace_iter_func *iter, void *arg);
 rb_control_frame_t *rb_vm_get_ruby_level_next_cfp(rb_thread_t *th, rb_control_frame_t *cfp);
 int rb_vm_get_sourceline(const rb_control_frame_t *);
 VALUE rb_name_err_mesg_new(VALUE obj, VALUE mesg, VALUE recv, VALUE method);