1 files changed, 0 insertions, 4 deletions
diff --git a/gc.c b/gc.c
index d6aaf2ecd7..5a94103aa6 100644
--- a/gc.c
+++ b/gc.c
@@ -2803,10 +2803,6 @@ rb_obj_id(VALUE obj)
     return nonspecial_obj_id(obj);
 }
 
-size_t rb_str_memsize(VALUE);
-size_t rb_ary_memsize(VALUE);
-size_t rb_io_memsize(const rb_io_t *);
-size_t rb_generic_ivar_memsize(VALUE);
 #include "regint.h"
 
 static size_t