dovecot-2.0: DEBUG: i_free() now clears the memory before freein...

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.0/rev/19787c343ef1
changeset: 10522:19787c343ef1
user:      Timo Sirainen <tss at iki.fi>
date:      Tue Dec 22 14:19:15 2009 -0500
description:
DEBUG: i_free() now clears the memory before freeing it.

diffstat:

1 file changed, 6 insertions(+)
src/lib/mempool-system.c |    6 ++++++

diffs (30 lines):

diff -r 76af32fae1e2 -r 19787c343ef1 src/lib/mempool-system.c
--- a/src/lib/mempool-system.c	Tue Dec 22 12:51:37 2009 -0500
+++ b/src/lib/mempool-system.c	Tue Dec 22 14:19:15 2009 -0500
@@ -3,6 +3,7 @@
 /* @UNSAFE: whole file */
 
 #include "lib.h"
+#include "safe-memset.h"
 #include "mempool.h"
 
 #include <stdlib.h>
@@ -19,6 +20,8 @@
 #elif defined (HAVE_GC_H)
 #  include <gc.h>
 #endif
+
+#define CLEAR_CHR 0xde
 
 static const char *pool_system_get_name(pool_t pool);
 static void pool_system_ref(pool_t pool);
@@ -89,6 +92,9 @@ static void pool_system_free(pool_t pool
 static void pool_system_free(pool_t pool ATTR_UNUSED,
 			     void *mem ATTR_UNUSED)
 {
+#if !defined(USE_GC) && defined(HAVE_MALLOC_USABLE_SIZE) && defined(DEBUG)
+	safe_memset(mem, CLEAR_CHR, malloc_usable_size(mem));
+#endif
 #ifndef USE_GC
 	free(mem);
 #endif