1 files changed, 2 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index f8b54c0058..317e2e4072 100644
--- a/internal.h
+++ b/internal.h
@@ -1291,6 +1291,8 @@ st_table *rb_st_copy(VALUE obj, struct st_table *orig_tbl);
 
 /* gc.c (export) */
 size_t rb_obj_memsize_of(VALUE);
+void rb_gc_verify_internal_consistency(void);
+
 #define RB_OBJ_GC_FLAGS_MAX 5
 size_t rb_obj_gc_flags(VALUE, ID[], size_t);
 void rb_gc_mark_values(long n, const VALUE *values);