1 files changed, 4 insertions, 0 deletions

diff --git a/mem.c b/mem.c
index c16fe54..07519d5 100644
--- a/mem.c
+++ b/mem.c
@@ -111,6 +111,10 @@ freearena(struct arena *ar)
       prev = ar->prev;
       if (ar->dyn)
          free(ar);
+      else {
+         assert(!prev);
+         ar->n = 0;
+      }
    }
 }