From 53a55eacddac88ffa3e14125d8f3491147291fdc Mon Sep 17 00:00:00 2001
From: Nathaniel Wesley Filardo <nwf@cs.jhu.edu>
Date: Tue, 10 Nov 2015 23:38:27 -0500
Subject: [PATCH] umalloc: poison frees

---
 umalloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/umalloc.c b/umalloc.c
index a7e7d2c..ee339d5 100644
--- a/umalloc.c
+++ b/umalloc.c
@@ -30,6 +30,7 @@ free(void *ap)
   for(p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr)
     if(p >= p->s.ptr && (bp > p || bp < p->s.ptr))
       break;
+  memset(ap, 0xDE, bp->s.size);
   if(bp + bp->s.size == p->s.ptr){
     bp->s.size += p->s.ptr->s.size;
     bp->s.ptr = p->s.ptr->s.ptr;
-- 
2.50.1