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[tor-commits] [tor/master] Triage the XXX023 and XXX022 comments: postpone many.



commit 2491fff5a6fda1c1e2044d332e551907a579929d
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Fri Jun 15 09:37:40 2012 -0400

    Triage the XXX023 and XXX022 comments: postpone many.
---
 src/common/address.c     |    2 +-
 src/common/compat.c      |    2 +-
 src/or/buffers.c         |    6 +++---
 src/or/circuitbuild.c    |    8 ++++----
 src/or/circuitlist.c     |    4 ++--
 src/or/circuituse.c      |    4 ++--
 src/or/config.c          |    4 ++--
 src/or/connection.c      |    6 +++---
 src/or/connection_edge.c |   18 +++++++++---------
 src/or/connection_or.c   |    2 +-
 src/or/dirserv.c         |   12 ++++++------
 src/or/dnsserv.c         |    2 +-
 src/or/main.c            |    7 ++-----
 src/or/microdesc.c       |    2 +-
 src/or/networkstatus.c   |    2 +-
 src/or/relay.c           |    4 ++--
 src/or/rendclient.c      |    2 +-
 src/or/rendservice.c     |    4 ++--
 src/or/rephist.c         |    2 +-
 src/or/routerlist.c      |   10 +++++-----
 src/or/routerparse.c     |    2 +-
 src/or/transports.c      |    2 +-
 22 files changed, 52 insertions(+), 55 deletions(-)

diff --git a/src/common/address.c b/src/common/address.c
index e56465f..30665fa 100644
--- a/src/common/address.c
+++ b/src/common/address.c
@@ -1363,7 +1363,7 @@ get_interface_address6(int severity, sa_family_t family, tor_addr_t *addr)
 
 /* ======
  * IPv4 helpers
- * XXXX023 IPv6 deprecate some of these.
+ * XXXX024 IPv6 deprecate some of these.
  */
 
 /** Return true iff <b>ip</b> (in host order) is an IP reserved to localhost,
diff --git a/src/common/compat.c b/src/common/compat.c
index 71e39b6..7dfc688 100644
--- a/src/common/compat.c
+++ b/src/common/compat.c
@@ -15,7 +15,7 @@
 /* This is required on rh7 to make strptime not complain.
  * We also need it to make memmem get defined (where available)
  */
-/* XXXX023 We should just use AC_USE_SYSTEM_EXTENSIONS in our autoconf,
+/* XXXX024 We should just  use AC_USE_SYSTEM_EXTENSIONS in our autoconf,
  * and get this (and other important stuff!) automatically. Once we do that,
  * make sure to also change the extern char **environ detection in
  * configure.in, because whether that is declared or not depends on whether
diff --git a/src/or/buffers.c b/src/or/buffers.c
index be1bdd3..9acc229 100644
--- a/src/or/buffers.c
+++ b/src/or/buffers.c
@@ -677,12 +677,12 @@ read_to_chunk_tls(buf_t *buf, chunk_t *chunk, tor_tls_t *tls,
  * (because of EOF), set *<b>reached_eof</b> to 1 and return 0. Return -1 on
  * error; else return the number of bytes read.
  */
-/* XXXX023 indicate "read blocked" somehow? */
+/* XXXX024 indicate "read blocked" somehow? */
 int
 read_to_buf(tor_socket_t s, size_t at_most, buf_t *buf, int *reached_eof,
             int *socket_error)
 {
-  /* XXXX023 It's stupid to overload the return values for these functions:
+  /* XXXX024 It's stupid to overload the return values for these functions:
    * "error status" and "number of bytes read" are not mutually exclusive.
    */
   int r = 0;
@@ -855,7 +855,7 @@ flush_chunk_tls(tor_tls_t *tls, buf_t *buf, chunk_t *chunk,
 int
 flush_buf(tor_socket_t s, buf_t *buf, size_t sz, size_t *buf_flushlen)
 {
-  /* XXXX023 It's stupid to overload the return values for these functions:
+  /* XXXX024 It's stupid to overload the return values for these functions:
    * "error status" and "number of bytes flushed" are not mutually exclusive.
    */
   int r;
diff --git a/src/or/circuitbuild.c b/src/or/circuitbuild.c
index 149383e..cfd1956 100644
--- a/src/or/circuitbuild.c
+++ b/src/or/circuitbuild.c
@@ -44,12 +44,12 @@
 
 /********* START VARIABLES **********/
 /** Global list of circuit build times */
-// XXXX023: Add this as a member for entry_guard_t instead of global?
+// XXXX: Add this as a member for entry_guard_t instead of global?
 // Then we could do per-guard statistics, as guards are likely to
 // vary in their own latency. The downside of this is that guards
 // can change frequently, so we'd be building a lot more circuits
 // most likely.
-/* XXXX023 Make this static; add accessor functions. */
+/* XXXX024 Make this static; add accessor functions. */
 circuit_build_times_t circ_times;
 
 /** A global list of all circuits at this hop. */
@@ -4238,7 +4238,7 @@ entry_guards_compute_status(const or_options_t *options, time_t now)
  * If <b>mark_relay_status</b>, also call router_set_status() on this
  * relay.
  *
- * XXX023 change succeeded and mark_relay_status into 'int flags'.
+ * XXX024 change succeeded and mark_relay_status into 'int flags'.
  */
 int
 entry_guard_register_connect_status(const char *digest, int succeeded,
@@ -4763,7 +4763,7 @@ entry_guards_parse_state(or_state_t *state, int set, char **msg)
     }
     entry_guards = new_entry_guards;
     entry_guards_dirty = 0;
-    /* XXX023 hand new_entry_guards to this func, and move it up a
+    /* XXX024 hand new_entry_guards to this func, and move it up a
      * few lines, so we don't have to re-dirty it */
     if (remove_obsolete_entry_guards(now))
       entry_guards_dirty = 1;
diff --git a/src/or/circuitlist.c b/src/or/circuitlist.c
index 5e3370a..7ed942c 100644
--- a/src/or/circuitlist.c
+++ b/src/or/circuitlist.c
@@ -1180,7 +1180,7 @@ circuit_mark_all_unused_circs(void)
  * This is useful for letting the user change pseudonyms, so new
  * streams will not be linkable to old streams.
  */
-/* XXX023 this is a bad name for what this function does */
+/* XXX024 this is a bad name for what this function does */
 void
 circuit_expire_all_dirty_circs(void)
 {
@@ -1191,7 +1191,7 @@ circuit_expire_all_dirty_circs(void)
     if (CIRCUIT_IS_ORIGIN(circ) &&
         !circ->marked_for_close &&
         circ->timestamp_dirty)
-      /* XXXX023 This is a screwed-up way to say "This is too dirty
+      /* XXXX024 This is a screwed-up way to say "This is too dirty
        * for new circuits. */
       circ->timestamp_dirty -= options->MaxCircuitDirtiness;
   }
diff --git a/src/or/circuituse.c b/src/or/circuituse.c
index 7532c4e..c34b698 100644
--- a/src/or/circuituse.c
+++ b/src/or/circuituse.c
@@ -1475,7 +1475,7 @@ circuit_get_open_circ_or_launch(entry_connection_t *conn,
         return -1;
       }
     } else {
-      /* XXXX023 Duplicates checks in connection_ap_handshake_attach_circuit:
+      /* XXXX024 Duplicates checks in connection_ap_handshake_attach_circuit:
        * refactor into a single function? */
       const node_t *node = node_get_by_nickname(conn->chosen_exit_name, 1);
       int opt = conn->chosen_exit_optional;
@@ -1916,7 +1916,7 @@ connection_ap_handshake_attach_circuit(entry_connection_t *conn)
     /* find the circuit that we should use, if there is one. */
     retval = circuit_get_open_circ_or_launch(
         conn, CIRCUIT_PURPOSE_C_GENERAL, &circ);
-    if (retval < 1) // XXX022 if we totally fail, this still returns 0 -RD
+    if (retval < 1) // XXX023 if we totally fail, this still returns 0 -RD
       return retval;
 
     log_debug(LD_APP|LD_CIRC,
diff --git a/src/or/config.c b/src/or/config.c
index 03e93e0..598051e 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -1692,7 +1692,7 @@ options_act(const or_options_t *old_options)
        || !geoip_is_loaded())) {
     /* XXXX Don't use this "<default>" junk; make our filename options
      * understand prefixes somehow. -NM */
-    /* XXXX023 Reload GeoIPFile on SIGHUP. -NM */
+    /* XXXX024 Reload GeoIPFile on SIGHUP. -NM */
     char *actual_fname = tor_strdup(options->GeoIPFile);
 #ifdef _WIN32
     if (!strcmp(actual_fname, "<default>")) {
@@ -4103,7 +4103,7 @@ options_validate(or_options_t *old_options, or_options_t *options,
              "ignore you.");
   }
 
-  /*XXXX023 checking for defaults manually like this is a bit fragile.*/
+  /*XXXX checking for defaults manually like this is a bit fragile.*/
 
   /* Keep changes to hard-coded values synchronous to man page and default
    * values table. */
diff --git a/src/or/connection.c b/src/or/connection.c
index 34e1a5c..9bbab19 100644
--- a/src/or/connection.c
+++ b/src/or/connection.c
@@ -2280,7 +2280,7 @@ static void
 record_num_bytes_transferred(connection_t *conn,
                              time_t now, size_t num_read, size_t num_written)
 {
-  /* XXX023 check if this is necessary */
+  /* XXX024 check if this is necessary */
   if (num_written >= INT_MAX || num_read >= INT_MAX) {
     log_err(LD_BUG, "Value out of range. num_read=%lu, num_written=%lu, "
              "connection type=%s, state=%s",
@@ -2925,7 +2925,7 @@ evbuffer_inbuf_callback(struct evbuffer *buf,
     connection_consider_empty_read_buckets(conn);
     if (conn->type == CONN_TYPE_AP) {
       edge_connection_t *edge_conn = TO_EDGE_CONN(conn);
-      /*XXXX022 check for overflow*/
+      /*XXXX024 check for overflow*/
       edge_conn->n_read += (int)info->n_added;
     }
   }
@@ -2946,7 +2946,7 @@ evbuffer_outbuf_callback(struct evbuffer *buf,
     connection_consider_empty_write_buckets(conn);
     if (conn->type == CONN_TYPE_AP) {
       edge_connection_t *edge_conn = TO_EDGE_CONN(conn);
-      /*XXXX022 check for overflow*/
+      /*XXXX024 check for overflow*/
       edge_conn->n_written += (int)info->n_deleted;
     }
   }
diff --git a/src/or/connection_edge.c b/src/or/connection_edge.c
index eae19ba..210c2e0 100644
--- a/src/or/connection_edge.c
+++ b/src/or/connection_edge.c
@@ -76,7 +76,7 @@ _connection_mark_unattached_ap(entry_connection_t *conn, int endreason,
    * being attached to a circuit, assume that an attempt to connect to
    * the destination hidden service has just ended.
    *
-   * XXX023 This condition doesn't limit to only streams failing
+   * XXXX This condition doesn't limit to only streams failing
    * without ever being attached.  That sloppiness should be harmless,
    * but we should fix it someday anyway. */
   if ((edge_conn->on_circuit != NULL || edge_conn->edge_has_sent_end) &&
@@ -622,7 +622,7 @@ connection_ap_expire_beginning(void)
     /* kludge to make us not try this circuit again, yet to allow
      * current streams on it to survive if they can: make it
      * unattractive to use for new streams */
-    /* XXXX023 this is a kludgy way to do this. */
+    /* XXXX024 this is a kludgy way to do this. */
     tor_assert(circ->timestamp_dirty);
     circ->timestamp_dirty -= options->MaxCircuitDirtiness;
     /* give our stream another 'cutoff' seconds to try */
@@ -664,7 +664,7 @@ connection_ap_attach_pending(void)
 
 /** Tell any AP streams that are waiting for a one-hop tunnel to
  * <b>failed_digest</b> that they are going to fail. */
-/* XXX023 We should get rid of this function, and instead attach
+/* XXX024 We should get rid of this function, and instead attach
  * one-hop streams to circ->p_streams so they get marked in
  * circuit_mark_for_close like normal p_streams. */
 void
@@ -1991,7 +1991,7 @@ connection_ap_handshake_rewrite_and_attach(entry_connection_t *conn,
       connection_mark_unattached_ap(conn, END_STREAM_REASON_TORPROTOCOL);
       return -1;
     }
-    /* XXXX022-1090 Should we also allow foo.bar.exit if ExitNodes is set and
+    /* XXXX024-1090 Should we also allow foo.bar.exit if ExitNodes is set and
        Bar is not listed in it?  I say yes, but our revised manpage branch
        implies no. */
   }
@@ -2572,12 +2572,12 @@ connection_ap_handshake_send_begin(entry_connection_t *ap_conn)
 
   edge_conn->stream_id = get_unique_stream_id_by_circ(circ);
   if (edge_conn->stream_id==0) {
-    /* XXXX023 Instead of closing this stream, we should make it get
+    /* XXXX024 Instead of closing this stream, we should make it get
      * retried on another circuit. */
     connection_mark_unattached_ap(ap_conn, END_STREAM_REASON_INTERNAL);
 
     /* Mark this circuit "unusable for new streams". */
-    /* XXXX023 this is a kludgy way to do this. */
+    /* XXXX024 this is a kludgy way to do this. */
     tor_assert(circ->_base.timestamp_dirty);
     circ->_base.timestamp_dirty -= get_options()->MaxCircuitDirtiness;
     return -1;
@@ -2657,12 +2657,12 @@ connection_ap_handshake_send_resolve(entry_connection_t *ap_conn)
 
   edge_conn->stream_id = get_unique_stream_id_by_circ(circ);
   if (edge_conn->stream_id==0) {
-    /* XXXX023 Instead of closing this stream, we should make it get
+    /* XXXX024 Instead of closing this stream, we should make it get
      * retried on another circuit. */
     connection_mark_unattached_ap(ap_conn, END_STREAM_REASON_INTERNAL);
 
     /* Mark this circuit "unusable for new streams". */
-    /* XXXX023 this is a kludgy way to do this. */
+    /* XXXX024 this is a kludgy way to do this. */
     tor_assert(circ->_base.timestamp_dirty);
     circ->_base.timestamp_dirty -= get_options()->MaxCircuitDirtiness;
     return -1;
@@ -2834,7 +2834,7 @@ tell_controller_about_resolved_result(entry_connection_t *conn,
  * certain errors or for values that didn't come via DNS.  <b>expires</b> is
  * a time when the answer expires, or -1 or TIME_MAX if there's a good TTL.
  **/
-/* XXXX023 the use of the ttl and expires fields is nutty.  Let's make this
+/* XXXX the use of the ttl and expires fields is nutty.  Let's make this
  * interface and those that use it less ugly. */
 void
 connection_ap_handshake_socks_resolved(entry_connection_t *conn,
diff --git a/src/or/connection_or.c b/src/or/connection_or.c
index 467e169..d016387 100644
--- a/src/or/connection_or.c
+++ b/src/or/connection_or.c
@@ -401,7 +401,7 @@ connection_or_process_inbuf(or_connection_t *conn)
    * check would otherwise just let data accumulate.  It serves no purpose
    * in 0.2.3.
    *
-   * XXX023 Remove this check once we verify that the above paragraph is
+   * XXX024 Remove this check once we verify that the above paragraph is
    * 100% true. */
   if (buf_datalen(conn->_base.inbuf) > MAX_OR_INBUF_WHEN_NONOPEN) {
     log_fn(LOG_PROTOCOL_WARN, LD_NET, "Accumulated too much data (%d bytes) "
diff --git a/src/or/dirserv.c b/src/or/dirserv.c
index 67b18fb..bfebbcd 100644
--- a/src/or/dirserv.c
+++ b/src/or/dirserv.c
@@ -975,7 +975,7 @@ running_long_enough_to_decide_unreachable(void)
 void
 dirserv_set_router_is_running(routerinfo_t *router, time_t now)
 {
-  /*XXXX023 This function is a mess.  Separate out the part that calculates
+  /*XXXX024 This function is a mess.  Separate out the part that calculates
     whether it's reachable and the part that tells rephist that the router was
     unreachable.
    */
@@ -1793,7 +1793,7 @@ dirserv_thinks_router_is_unreliable(time_t now,
 {
   if (need_uptime) {
     if (!enough_mtbf_info) {
-      /* XXX023 Once most authorities are on v3, we should change the rule from
+      /* XXX024 Once most authorities are on v3, we should change the rule from
        * "use uptime if we don't have mtbf data" to "don't advertise Stable on
        * v3 if we don't have enough mtbf data."  Or maybe not, since if we ever
        * hit a point where we need to reset a lot of authorities at once,
@@ -2321,7 +2321,7 @@ is_router_version_good_for_possible_guard(const char *platform)
 
   tor_version_t router_version;
 
-  /* XXX023 This block should be extracted into its own function. */
+  /* XXX024 This block should be extracted into its own function. */
   /* XXXX Begin code copied from tor_version_as_new_as (in routerparse.c) */
   {
     char *s, *s2, *start;
@@ -3402,7 +3402,7 @@ lookup_cached_dir_by_fp(const char *fp)
     d = strmap_get(cached_consensuses, "ns");
   else if (memchr(fp, '\0', DIGEST_LEN) && cached_consensuses &&
            (d = strmap_get(cached_consensuses, fp))) {
-    /* this here interface is a nasty hack XXXX023 */;
+    /* this here interface is a nasty hack XXXX024 */;
   } else if (router_digest_is_me(fp) && the_v2_networkstatus)
     d = the_v2_networkstatus;
   else if (cached_v2_networkstatus)
@@ -3613,7 +3613,7 @@ connection_dirserv_add_servers_to_outbuf(dir_connection_t *conn)
     }
     body = signed_descriptor_get_body(sd);
     if (conn->zlib_state) {
-      /* XXXX022 This 'last' business should actually happen on the last
+      /* XXXX024 This 'last' business should actually happen on the last
        * routerinfo, not on the last fingerprint. */
       int last = ! smartlist_len(conn->fingerprint_stack);
       connection_write_to_buf_zlib(body, sd->signed_descriptor_len, conn,
@@ -3656,7 +3656,7 @@ connection_dirserv_add_microdescs_to_outbuf(dir_connection_t *conn)
     if (!md)
       continue;
     if (conn->zlib_state) {
-      /* XXXX022 This 'last' business should actually happen on the last
+      /* XXXX024 This 'last' business should actually happen on the last
        * routerinfo, not on the last fingerprint. */
       int last = !smartlist_len(conn->fingerprint_stack);
       connection_write_to_buf_zlib(md->body, md->bodylen, conn, last);
diff --git a/src/or/dnsserv.c b/src/or/dnsserv.c
index 183c5b8..69adcef 100644
--- a/src/or/dnsserv.c
+++ b/src/or/dnsserv.c
@@ -19,7 +19,7 @@
 #ifdef HAVE_EVENT2_DNS_H
 #include <event2/dns.h>
 #include <event2/dns_compat.h>
-/* XXXX023 this implies we want an improved evdns  */
+/* XXXX this implies we want an improved evdns  */
 #include <event2/dns_struct.h>
 #else
 #include "eventdns.h"
diff --git a/src/or/main.c b/src/or/main.c
index d9d64ce..f8740d7 100644
--- a/src/or/main.c
+++ b/src/or/main.c
@@ -1435,11 +1435,8 @@ run_scheduled_events(time_t now)
    *    We do this before step 4, so it can try building more if
    *    it's not comfortable with the number of available circuits.
    */
-  /* XXXX022 If our circuit build timeout is much lower than a second, maybe
-   * we should do this more often? -NM
-   * It can't be lower than 1.5 seconds currently; see
-   * circuit_build_times_min_timeout(). -RD
-   */
+  /* (If our circuit build timeout can ever become lower than a second (which
+   * it can't, currently), we should do this more often.) */
   circuit_expire_building();
 
   /** 3b. Also look at pending streams and prune the ones that 'began'
diff --git a/src/or/microdesc.c b/src/or/microdesc.c
index ba6c88f..10dab25 100644
--- a/src/or/microdesc.c
+++ b/src/or/microdesc.c
@@ -477,7 +477,7 @@ microdesc_cache_rebuild(microdesc_cache_t *cache, int force)
     md->body = (char*)cache->cache_content->data + md->off;
     if (PREDICT_UNLIKELY(
              md->bodylen < 9 || fast_memneq(md->body, "onion-key", 9) != 0)) {
-      /* XXXX023 once bug 2022 is solved, we can kill this block and turn it
+      /* XXXX once bug 2022 is solved, we can kill this block and turn it
        * into just the tor_assert(!memcmp) */
       off_t avail = cache->cache_content->size - md->off;
       char *bad_str;
diff --git a/src/or/networkstatus.c b/src/or/networkstatus.c
index e787ec5..745176d 100644
--- a/src/or/networkstatus.c
+++ b/src/or/networkstatus.c
@@ -1836,7 +1836,7 @@ networkstatus_set_current_consensus(const char *consensus,
     routerstatus_list_update_named_server_map();
     cell_ewma_set_scale_factor(options, current_consensus);
 
-    /* XXXX023 this call might be unnecessary here: can changing the
+    /* XXXX024 this call might be unnecessary here: can changing the
      * current consensus really alter our view of any OR's rate limits? */
     connection_or_update_token_buckets(get_connection_array(), options);
 
diff --git a/src/or/relay.c b/src/or/relay.c
index 0c99c34..8bbc989 100644
--- a/src/or/relay.c
+++ b/src/or/relay.c
@@ -799,7 +799,7 @@ connection_ap_process_end_not_open(
           /* We haven't retried too many times; reattach the connection. */
           circuit_log_path(LOG_INFO,LD_APP,circ);
           /* Mark this circuit "unusable for new streams". */
-          /* XXXX023 this is a kludgy way to do this. */
+          /* XXXX024 this is a kludgy way to do this. */
           tor_assert(circ->_base.timestamp_dirty);
           circ->_base.timestamp_dirty -= get_options()->MaxCircuitDirtiness;
 
@@ -1462,7 +1462,7 @@ connection_edge_package_raw_inbuf(edge_connection_t *conn, int package_partial,
   stats_n_data_cells_packaged += 1;
 
   if (PREDICT_UNLIKELY(sending_from_optimistic)) {
-    /* XXX023 We could be more efficient here by sometimes packing
+    /* XXXX We could be more efficient here by sometimes packing
      * previously-sent optimistic data in the same cell with data
      * from the inbuf. */
     generic_buffer_get(entry_conn->sending_optimistic_data, payload, length);
diff --git a/src/or/rendclient.c b/src/or/rendclient.c
index 79e017b..6c751be 100644
--- a/src/or/rendclient.c
+++ b/src/or/rendclient.c
@@ -830,7 +830,7 @@ rend_client_rendezvous_acked(origin_circuit_t *circ, const uint8_t *request,
   /* Set timestamp_dirty, because circuit_expire_building expects it
    * to specify when a circuit entered the _C_REND_READY state. */
   circ->_base.timestamp_dirty = time(NULL);
-  /* XXXX023 This is a pretty brute-force approach. It'd be better to
+  /* XXXX This is a pretty brute-force approach. It'd be better to
    * attach only the connections that are waiting on this circuit, rather
    * than trying to attach them all. See comments bug 743. */
   /* If we already have the introduction circuit built, make sure we send
diff --git a/src/or/rendservice.c b/src/or/rendservice.c
index 5ffc586..11e80b7 100644
--- a/src/or/rendservice.c
+++ b/src/or/rendservice.c
@@ -1033,7 +1033,7 @@ rend_service_note_removing_intro_point(rend_service_t *service,
 /** Respond to an INTRODUCE2 cell by launching a circuit to the chosen
  * rendezvous point.
  */
- /* XXX022 this function sure could use some organizing. -RD */
+ /* XXXX024 this function sure could use some organizing. -RD */
 int
 rend_service_introduce(origin_circuit_t *circuit, const uint8_t *request,
                        size_t request_len)
@@ -2255,7 +2255,7 @@ rend_services_introduce(void)
          *
          * Unfortunately, we can't find out when the new descriptor
          * has actually been uploaded, so we'll have to settle for a
-         * five-minute timer.  Start it.  XXX023 This sucks. */
+         * five-minute timer.  Start it.  XXXX024 This sucks. */
         intro->time_expiring = now;
 
         intro_point_set_changed = 1;
diff --git a/src/or/rephist.c b/src/or/rephist.c
index 341a5a3..720d14c 100644
--- a/src/or/rephist.c
+++ b/src/or/rephist.c
@@ -588,7 +588,7 @@ rep_hist_get_weighted_time_known(const char *id, time_t when)
 int
 rep_hist_have_measured_enough_stability(void)
 {
-  /* XXXX022 This doesn't do so well when we change our opinion
+  /* XXXX023 This doesn't do so well when we change our opinion
    * as to whether we're tracking router stability. */
   return started_tracking_stability < time(NULL) - 4*60*60;
 }
diff --git a/src/or/routerlist.c b/src/or/routerlist.c
index feda4f1..490c123 100644
--- a/src/or/routerlist.c
+++ b/src/or/routerlist.c
@@ -1831,7 +1831,7 @@ smartlist_choose_node_by_bandwidth_weights(smartlist_t *sl,
       sl_last_weighted_bw_of_me = weight*this_bw;
   } SMARTLIST_FOREACH_END(node);
 
-  /* XXXX023 this is a kludge to expose these values. */
+  /* XXXX this is a kludge to expose these values. */
   sl_last_total_weighted_bw = weighted_bw;
 
   log_debug(LD_CIRC, "Choosing node for rule %s based on weights "
@@ -1960,7 +1960,7 @@ smartlist_choose_node_by_bandwidth(smartlist_t *sl,
       if (node->rs->has_bandwidth) {
         this_bw = kb_to_bytes(node->rs->bandwidth);
       } else { /* guess */
-        /* XXX023 once consensuses always list bandwidths, we can take
+        /* XXX024 once consensuses always list bandwidths, we can take
          * this guessing business out. -RD */
         is_known = 0;
         flags = node->rs->is_fast ? 1 : 0;
@@ -2079,7 +2079,7 @@ smartlist_choose_node_by_bandwidth(smartlist_t *sl,
     }
   }
 
-  /* XXXX023 this is a kludge to expose these values. */
+  /* XXXX this is a kludge to expose these values. */
   sl_last_total_weighted_bw = total_bw;
 
   log_debug(LD_CIRC, "Total weighted bw = "U64_FORMAT
@@ -4753,7 +4753,7 @@ update_consensus_router_descriptor_downloads(time_t now, int is_vote,
 
 /** How often should we launch a server/authority request to be sure of getting
  * a guess for our IP? */
-/*XXXX023 this info should come from netinfo cells or something, or we should
+/*XXXX024 this info should come from netinfo cells or something, or we should
  * do this only when we aren't seeing incoming data. see bug 652. */
 #define DUMMY_DOWNLOAD_INTERVAL (20*60)
 
@@ -4764,7 +4764,7 @@ launch_dummy_descriptor_download_as_needed(time_t now,
                                            const or_options_t *options)
 {
   static time_t last_dummy_download = 0;
-  /* XXXX023 we could be smarter here; see notes on bug 652. */
+  /* XXXX024 we could be smarter here; see notes on bug 652. */
   /* If we're a server that doesn't have a configured address, we rely on
    * directory fetches to learn when our address changes.  So if we haven't
    * tried to get any routerdescs in a long time, try a dummy fetch now. */
diff --git a/src/or/routerparse.c b/src/or/routerparse.c
index 6308f3a..37609bd 100644
--- a/src/or/routerparse.c
+++ b/src/or/routerparse.c
@@ -1836,7 +1836,7 @@ authority_cert_parse_from_string(const char *s, const char **end_of_string)
     struct in_addr in;
     char *address = NULL;
     tor_assert(tok->n_args);
-    /* XXX023 use some tor_addr parse function below instead. -RD */
+    /* XXX024 use some tor_addr parse function below instead. -RD */
     if (tor_addr_port_split(LOG_WARN, tok->args[0], &address,
                             &cert->dir_port) < 0 ||
         tor_inet_aton(address, &in) == 0) {
diff --git a/src/or/transports.c b/src/or/transports.c
index 2fc2adc..1522756 100644
--- a/src/or/transports.c
+++ b/src/or/transports.c
@@ -1002,7 +1002,7 @@ create_managed_proxy_environment(const managed_proxy_t *mp)
       tor_free(bindaddr_tmp);
     }
 
-    /* XXX023 Remove the '=' here once versions of obfsproxy which
+    /* XXX024 Remove the '=' here once versions of obfsproxy which
      * assert that this env var exists are sufficiently dead.
      *
      * (If we remove this line entirely, some joker will stick this



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