Add the size pool slot size to the output of ObjectSpace.dump/dump_all

1 files changed, 2 insertions, 0 deletions

diff --git a/gc.h b/gc.h
index 91d6e5787d..84c8eade63 100644
--- a/gc.h
+++ b/gc.h
@@ -136,6 +136,8 @@ void rb_objspace_each_objects_without_setup(
     int (*callback)(void *, void *, size_t, void *),
     void *data);
 
+size_t rb_gc_obj_slot_size(VALUE obj);
+
 RUBY_SYMBOL_EXPORT_END
 
 #endif /* RUBY_GC_H */