talloc: Add a warning to talloc_reference() documentation.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Kai Blin <kai@samba.org>

Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Mon Oct 14 23:05:54 CEST 2013 on sn-devel-104

(cherry picked from commit 2343df451a13115eebfd46f9247ec2ae8c3a85c0)

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/talloc/talloc.h b/lib/talloc/talloc.h
index 1b59390e33a..5d29a8d5cf0 100644
--- a/lib/talloc/talloc.h
+++ b/lib/talloc/talloc.h
@@ -961,6 +961,10 @@ size_t talloc_reference_count(const void *ptr);
  * @return              The original pointer 'ptr', NULL if talloc ran out of
  *                      memory in creating the reference.
  *
+ * @warning You should try to avoid using this interface. It turns a beautiful
+ *          talloc-tree into a graph. It is often really hard to debug if you
+ *          screw something up by accident.
+ *
  * Example:
  * @code
  *      unsigned int *a, *b, *c;
@@ -1001,6 +1005,10 @@ void *_talloc_reference_loc(const void *context, const void *ptr, const char *lo
  * this function will fail and will return -1.  Likewise, if ptr is NULL,
  * then the function will make no modifications and return -1.
  *
+ * @warning You should try to avoid using this interface. It turns a beautiful
+ *          talloc-tree into a graph. It is often really hard to debug if you
+ *          screw something up by accident.
+ *
  * Example:
  * @code
  *      unsigned int *a, *b, *c;