1 files changed, 0 insertions, 1 deletions
diff --git a/gc.h b/gc.h
index b72ceda134..2c91e06620 100644
--- a/gc.h
+++ b/gc.h
@@ -91,7 +91,6 @@ const char *rb_raw_obj_info(char *buff, const int buff_size, VALUE obj);
 void rb_obj_info_dump(VALUE obj);
 
 struct rb_thread_struct;
-int rb_threadptr_during_gc(struct rb_thread_struct *th);
 
 RUBY_SYMBOL_EXPORT_BEGIN