(gdb) p *rtp
$1 = {s = 0, f = {frametype = 0, subclass = 0, datalen = 0, samples = 0, mallocd = 0, mallocd_hdr_len = 0, offset = 0, src = 0x0, data = {ptr = 0x14d7ca70, uint32 = 349686384, 
      pad = "p\312\327\024\000\000\000"}, delivery = {tv_sec = 351004144, tv_usec = 0}, frame_list = {next = 0x0}, flags = 0, ts = 0, len = 0, seqno = 0}, 
  rawdata = '\000' <repeats 56 times>, "520;F\336\276\270\257\262\270\312[K53=E\365\332ľ\324\347H?D=MeϷ\267\257\256\266\271\374</(-3B\376\353\300\272\276\311[NFF`ۿ\274\270\263\267\267\315F8+)*3S\337\275\265\264\260\274\303\335BF=D\346\367\316\312\314\302\323e?337T\317\301\272\275\272\277\332gD=;<L]̿\274\263\272\301\326UK44FN\345\351p\336\\XRNk\\\355ƽ\270\272\271\277\330n@950:L\366\333\316\303\314\322\357Y\375^\342\315\345", '\000' <repeats 7940 times>, "i\001\000\000\210$\255\373l \201\266\000\060\201\266\000 \201\266\000 \201\266\000 \201\266\000 \201\266\000 \201\266\000\060\201\266", '\000' <repeats 16 times>, "h\027\312\024o\002\000\000\000\000\000\000<\217\000\000\000\000\000\n\260\352\327\024\000`\006\000\000\000\000\000\000\000\000\000\274\352\327\024\000\000\000", ssrc = 0, themssrc = 0, 
  rxssrc = 4294967295, lastts = 0, lastrxts = 0, lastividtimestamp = 0, lastovidtimestamp = 0, lastitexttimestamp = 0, lastotexttimestamp = 0, lasteventseqn = 85986880, lastrxseqno = 293604032, 
  seedrxseqno = 1184, seedrxts = 61867616, rxcount = 3077675488, rxoctetcount = 0, txcount = 0, txoctetcount = 0, cycles = 0, rxjitter = 0, rxtransit = 0, lasttxformat = 0, lastrxformat = 0, 
  rtptimeout = 0, rtpholdtimeout = 0, rtpkeepalive = 0, resp = 0 '\000', lastevent = 4239393176, dtmf_duration = 55575248, dtmf_timeout = 4106287968, dtmfsamples = 4018205248, lastdigitts = 4156619168, 
  sending_digit = -128 '\200', send_digit = -19 '\355', send_payload = -38796000, send_duration = 171967472, nat = 98569536, flags = 276826176, us = {sin_family = 1440, sin_port = 280, sin_addr = {
      s_addr = 69207712}, sin_zero = "p\375`\373\060\002X"}, them = {sin_family = 64592, sin_port = 528, sin_addr = {s_addr = 4204790320}, 
    sin_zero = "\300\363\300\362\200\357@", <incomplete sequence \365>}, altthem = {sin_family = 63776, sin_port = 61056, sin_addr = {s_addr = 77658912}, sin_zero = "\230\376\020\003@\t@\r"}, rxcore = {
    tv_sec = 146802752, tv_usec = 127930496}, txcore = {tv_sec = 115344208, tv_usec = -15203232}, drxcore = -2.5550459315566667e+294, lastrx = {tv_sec = 22544776, tv_usec = -197068064}, dtmfmute = {
    tv_sec = -293539264, tv_usec = -119474880}, smoother = 0xfa60ee80, ioid = 0xfec80420, seqno = 656, rxseqno = 2368, sched = 0xb7719860, io = 0x168, data = 0x4e1, callback = 0, current_RTP_PT = {{
      isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 1}, {isAstFormat = 0, code = 0}, {isAstFormat = -1213661182, code = 16777343}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = -1}, {
      isAstFormat = 0, code = 0}, {isAstFormat = -1, code = 88520713}, {isAstFormat = 1262771554, code = 1262771615}, {isAstFormat = 1969583473, code = 101}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, 
      code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {
      isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 1}, {isAstFormat = 4079, code = 4851}, {isAstFormat = 0, code = 0} <repeats 129 times>, {isAstFormat = 0, 
      code = 349709704}, {isAstFormat = 100, code = 1}, {isAstFormat = 0, code = 0}, {isAstFormat = 351017960, code = 0}, {isAstFormat = 169, code = 0}, {isAstFormat = 2048, code = 613879}, {
      isAstFormat = 349696264, code = 1852143173}, {isAstFormat = 1444952692, code = 1699967585}, {isAstFormat = 1342836084, code = 1769367922}, {isAstFormat = 1701274988, code = 1768169530}, {
      isAstFormat = 1819307105, code = 1630301793}, {isAstFormat = 168651884, code = 1851877443}, {isAstFormat = 980182382, code = 1346982688}, {isAstFormat = 808466223, code = 808463667}, {
      isAstFormat = 858927152, code = 168637749}, {isAstFormat = 1769103702, code = 1701601889}, {isAstFormat = 1380065338, code = 1162298441}, {isAstFormat = 1380271440, code = 1633028621}, {
      isAstFormat = 979727724, code = 1212236832}, {isAstFormat = 825182532, code = 825045042}, {isAstFormat = 1851066893, code = 1702195561}, {isAstFormat = 540697705, code = 842412593}, {
      isAstFormat = 892417847, code = 825110581}, {isAstFormat = 892482355, code = 168626701}, {isAstFormat = 0, code = 0}, {isAstFormat = 169, code = 0}, {isAstFormat = 2048, code = 613880}, {
      isAstFormat = 350758544, code = 1852143173}, {isAstFormat = 1444952692, code = 1699967585}, {isAstFormat = 1342836084, code = 1769367922}, {isAstFormat = 1701274988, code = 1768169530}, {
      isAstFormat = 1819307105, code = 1630301793}, {isAstFormat = 168651884, code = 1851877443}, {isAstFormat = 980182382, code = 1212236832}, {isAstFormat = 825182532, code = 825045042}, {
      isAstFormat = 1633028621, code = 1650551154}, {isAstFormat = 540697964, code = 1145655874}, {isAstFormat = 1162888519, code = 168645189}, {isAstFormat = 1970037078, code = 1394621029}, {
      isAstFormat = 925847625, code = 758329392}, {isAstFormat = 808464432, code = 892678962}, {isAstFormat = 1851066893, code = 1702195561}, {isAstFormat = 540697705, code = 842412593}, {
      isAstFormat = 892417847, code = 825112114}, {isAstFormat = 875639603, code = 168626701}, {isAstFormat = 0, code = 0}, {isAstFormat = 129, code = 331760864}, {isAstFormat = -1217285048, code = 0}, {
      isAstFormat = -1217292192, code = 0}, {isAstFormat = 105, code = 149602968}, {isAstFormat = 331581728, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, 
      code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 0}, {isAstFormat = 0, code = 350758168}, {isAstFormat = 538976383, 
      code = 539831584}, {isAstFormat = 1819042115, code = 924869733}, {isAstFormat = 171258672, code = 128}, {isAstFormat = 216, code = 0}, {isAstFormat = 2, code = 613860}, {isAstFormat = 349143120, 
      code = 1852143173}, {isAstFormat = 1310734964, code = 1631811429}, {isAstFormat = 1919249516, code = 168649833}, {isAstFormat = 1986622032, code = 1734700137}, {isAstFormat = 1663056485, 
      code = 745303137}, {isAstFormat = 225209441, code = 1634222858}, {isAstFormat = 1818586734, code = 1230184506}, {isAstFormat = 808922960, code = 808269107}, {isAstFormat = 842018864, 
      code = 221656371}, {isAstFormat = 1818313482, code = 1232233836}, {isAstFormat = 1836404292, code = 808919098}, {isAstFormat = 168637747, code = 1819042115}, {isAstFormat = 1145664101, 
      code = 1701667150}, {isAstFormat = 168632378, code = 1902734933}, {isAstFormat = 1684628853, code = 842080314}, {isAstFormat = 926364214, code = 859125041}, {isAstFormat = 858992942, 
      code = 168638002}, {isAstFormat = 759449923, code = 1819042115}, {isAstFormat = 1348955753, code = 980641138}, {isAstFormat = 673198368, code = 1936028240}, {isAstFormat = 1635020389, 
      code = 1852795252}, {isAstFormat = 1819033888, code = 1684371311}, {isAstFormat = 1632641068, code = 1684370291}, {isAstFormat = 1919111968, code = 695100773}, {isAstFormat = 168626701, code = 0}, {
      isAstFormat = 161, code = 0}, {isAstFormat = 2048, code = 613862}, {isAstFormat = 344425992, code = 1852143173}, {isAstFormat = 1444952692, code = 1699967585}, {isAstFormat = 1342836084, 
      code = 1769367922}, {isAstFormat = 1701274988, code = 1768169530}, {isAstFormat = 1819307105, code = 1630301793}, {isAstFormat = 168651884, code = 1851877443}, {isAstFormat = 980182382, 
      code = 1212236832}, {isAstFormat = 825182532, code = 825045042}, {isAstFormat = 1633028621, code = 1650551154}, {isAstFormat = 540697964, code = 1279347012}, {isAstFormat = 1162888261, 
---Type <return> to continue, or q <return> to quit---
      code = 1431196229}, {isAstFormat = 1380270669, code = 1633028621}, {isAstFormat = 979727724, code = 808466208}, {isAstFormat = 1426722099, code = 1970366830}}, 
  rtp_lookup_code_cache_isAstFormat = 979659109, rtp_lookup_code_cache_code = 909259040, rtp_lookup_code_cache_result = 825702194, rtcp = 0x2e363235, pref = {
    order = "13314\r\n\r\n\000\000\000\000\000\000\000Q\000\000\000\030\356\321\024P\025\302\f\000\000\000", framing = "\024", '\000' <repeats 30 times>}, bridged = 0x0, strict_rtp_state = STRICT_RTP_OPEN, 
  strict_rtp_address = {sin_family = 0, sin_port = 0, sin_addr = {s_addr = 0}, sin_zero = "\000\000\000\000\000\000\000"}, set_marker_bit = -1, constantssrc = 0, red = 0x50}
(gdb) p *rtp->rtcp 
Cannot access memory at address 0x2e363235
(gdb)