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-rw-r--r--include/asterisk/channel.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asterisk/channel.h b/include/asterisk/channel.h
index de81ca909..e764d19d6 100644
--- a/include/asterisk/channel.h
+++ b/include/asterisk/channel.h
@@ -428,6 +428,9 @@ struct ast_channel {
int rawwriteformat; /*!< Raw write format */
struct ast_audiohook_list *audiohooks;
+ /*! This pointer should stay for Asterisk 1.4. It just keeps the struct size the same
+ * for the sake of ABI compatability. */
+ void *__unused;
AST_LIST_ENTRY(ast_channel) chan_list; /*!< For easy linking */