From 4029c07550295659b391220324f348f4b1a86381 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sat, 23 Jun 2012 22:30:43 +0000
Subject: [PATCH] -LRN: Poisoning:   Poisons memory before freeing it. It uses
 msize() CRT function, which (i believe) is not available on other platforms.
 This patch was intended to make the output of the next patch (see below) more
 apparent.

---
 src/util/common_allocation.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/util/common_allocation.c b/src/util/common_allocation.c
index 5e1f75eb7..801eeeebc 100644
--- a/src/util/common_allocation.c
+++ b/src/util/common_allocation.c
@@ -197,6 +197,17 @@ GNUNET_xfree_ (void *ptr, const char *filename, int linenumber)
 #ifdef W32_MEM_LIMIT
   ptr = &((size_t *) ptr)[-1];
   mem_used -= *((size_t *) ptr);
+#endif
+#if WINDOWS
+#if ENABLE_POISONING
+  {
+    size_t i;
+    char baadfood[4] = "\xBA\xAD\xF0\x0D";
+    size_t s = _msize (ptr);
+    for (i = 0; i < s; i++)
+      ((char *) ptr)[i] = baadfood[i % 4];
+  }
+#endif
 #endif
   free (ptr);
 }
-- 
2.25.1