1 files changed, 5 insertions, 1 deletions
diff --git a/lib.h b/lib.h
index dc12c355..48320174 100644
--- a/lib.h
+++ b/lib.h
@@ -154,7 +154,11 @@ struct string {
   obj_common;
   wchar_t *str;
   val len;
-  val alloc;
+#if HAVE_MALLOC_USABLE_SIZE
+  ucnum hash;
+#else
+  cnum alloc;
+#endif
 };
 
 typedef struct {