From 5656590fa06023de76ef366451376156ee5bdec3 Mon Sep 17 00:00:00 2001
From: Yuichi Nishiwaki <yuichi.nishiwaki@gmail.com>
Date: Thu, 28 Nov 2013 21:58:25 +0900
Subject: [PATCH] [bugfix] do not fuse end-of-page block into other blocks

---
 src/gc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gc.c b/src/gc.c
index d0fbf1e3..853413ce 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -455,7 +455,7 @@ gc_free(pic_state *pic, union header *p)
       break;
     }
   }
-  if (p + p->s.size == bp->s.ptr) {
+  if (p + p->s.size == bp->s.ptr && bp->s.ptr->s.size > 0) {
     p->s.size += bp->s.ptr->s.size;
     p->s.ptr = bp->s.ptr->s.ptr;
   }