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-rw-r--r--lib/talloc/talloc.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/talloc/talloc.h b/lib/talloc/talloc.h
index f8160dbc55..09a2b81768 100644
--- a/lib/talloc/talloc.h
+++ b/lib/talloc/talloc.h
@@ -194,6 +194,11 @@ void *talloc_init(const char *fmt, ...) PRINTF_ATTRIBUTE(1,2);
* talloc_set_log_stderr() for more information on talloc logging
* functions.
*
+ * If <code>TALLOC_FREE_FILL</code> environment variable is set,
+ * the memory occupied by the context is filled with the value of this variable.
+ * The value should be a numeric representation of the character you want to
+ * use.
+ *
* talloc_free() operates recursively on its children.
*
* @param[in] ptr The chunk to be freed.