Fixes a segmentation fault in dynamic hints when a channel technology isn't

loaded for a hint.

(closes issue #18495)
Reported by: bertrand
Tested by: bertrand

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@318921 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/channel.c b/main/channel.c
index 5025f0cd66d606c877bd768685aed9f556d61eac..cb1c36e38a9f9053a23931ef263510eec0e08c0f 100644 (file)
--- a/main/channel.c
+++ b/main/channel.c
@@ -3828,7 +3828,7 @@ static struct ast_frame *__ast_read(struct ast_channel *chan, int dropaudio)
                        }
                        /* Clear the exception flag */
                        ast_clear_flag(chan, AST_FLAG_EXCEPTION);
-               } else if (chan->tech->read)
+               } else if (chan->tech && chan->tech->read)
                        f = chan->tech->read(chan);
                else
                        ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name);