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[tor-commits] [tor/master] Allow n_chan to be NULL in circuitmux_find_map_entry(); it can be but with non-NULL p_chan when extending a circuit



commit 903cc8acd12ae2484ba2ad2a7ac1cb1b9bb88638
Author: Andrea Shepard <andrea@xxxxxxxxxxxxxx>
Date:   Mon Oct 1 14:55:33 2012 -0700

    Allow n_chan to be NULL in circuitmux_find_map_entry(); it can be but with non-NULL p_chan when extending a circuit
---
 src/or/circuitmux.c |   16 +++++++++-------
 1 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/src/or/circuitmux.c b/src/or/circuitmux.c
index e27a790..b782fdb 100644
--- a/src/or/circuitmux.c
+++ b/src/or/circuitmux.c
@@ -655,15 +655,17 @@ circuitmux_find_map_entry(circuitmux_t *cmux, circuit_t *circ)
   tor_assert(cmux);
   tor_assert(cmux->chanid_circid_map);
   tor_assert(circ);
-  tor_assert(circ->n_chan);
 
-  /* Okay, let's see if it's attached for n_chan/n_circ_id */
-  search.chan_id = circ->n_chan->global_identifier;
-  search.circ_id = circ->n_circ_id;
+  /* Check if we have n_chan */
+  if (circ->n_chan) {
+    /* Okay, let's see if it's attached for n_chan/n_circ_id */
+    search.chan_id = circ->n_chan->global_identifier;
+    search.circ_id = circ->n_circ_id;
 
-  /* Query */
-  hashent = HT_FIND(chanid_circid_muxinfo_map, cmux->chanid_circid_map,
-                    &search);
+    /* Query */
+    hashent = HT_FIND(chanid_circid_muxinfo_map, cmux->chanid_circid_map,
+                      &search);
+  }
 
   /* Found something? */
   if (hashent) {



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