$ sudo gdb /usr/local/apache2/bin/httpd
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(gdb) run -X
Starting program: /usr/local/apache2/bin/httpd -X

Program received signal SIGSEGV, Segmentation fault.
0x281af677 in strncmp () from /usr/lib/libc.so.4
(gdb) where
#0  0x281af677 in strncmp () from /usr/lib/libc.so.4
#1  0x8156424 in ?? ()
#2  0x809df4c in ap_run_fixups (r=0x816f050) at request.c:114
#3  0x809e7e1 in ap_process_request_internal (r=0x816f050) at request.c:286
#4  0x807acbe in ap_process_request (r=0x816f050) at http_request.c:286
#5  0x8076a56 in ap_process_http_connection (c=0x816b128) at http_core.c:293
#6  0x8094078 in ap_run_process_connection (c=0x816b128) at connection.c:85
#7  0x809431c in ap_process_connection (c=0x816b128, csd=0x816b050)
    at connection.c:211
#8  0x808997a in child_main (child_num_arg=0) at prefork.c:696
#9  0x8089a38 in make_child (s=0x80cf298, slot=0) at prefork.c:736
#10 0x8089b2a in startup_children (number_to_start=5) at prefork.c:808
#11 0x8089e10 in ap_mpm_run (_pconf=0x80cc018, plog=0x810e018, s=0x80cf298)
    at prefork.c:1024
#12 0x808f2ca in main (argc=2, argv=0xbfbffadc) at main.c:660
#13 0x8062bf9 in _start ()
(gdb) up 2
#2  0x809df4c in ap_run_fixups (r=0x816f050) at request.c:114
114                               (request_rec *r), (r), OK, DECLINED)
(gdb) p r
$1 = (request_rec *) 0x816f050
(gdb) p *r
$2 = {pool = 0x816f018, connection = 0x816b128, server = 0x80cf298, 
  next = 0x0, prev = 0x0, main = 0x0, 
  the_request = 0x816fd30 "GET http://172.16.0.1:8080/mdemjuuakziw HTTP/1.1", 
  assbackwards = 0, proxyreq = 1, header_only = 0, 
  protocol = 0x816fe18 "HTTP/1.1", proto_num = 1001, 
  hostname = 0x8170298 "172.16.0.1", request_time = 1057687541551586, 
  status_line = 0x0, status = 200, method = 0x816fd80 "GET", 
  method_number = 0, allowed = 0, allowed_xmethods = 0x0, 
  allowed_methods = 0x816f1e8, sent_bodyct = 0, bytes_sent = 0, 
  mtime = 1026151532000000, chunked = 0, range = 0x0, clength = 0, 
  remaining = 0, read_length = 0, read_body = 0, read_chunked = 0, 
  expecting_100 = 0, headers_in = 0x816f218, headers_out = 0x816f6a8, 
  err_headers_out = 0x8175018, subprocess_env = 0x816f460, notes = 0x816f9a8, 
  content_type = 0x0, handler = 0x80a9687 "proxy-server", 
  content_encoding = 0x0, content_languages = 0x0, vlist_validator = 0x0, 
  user = 0x0, ap_auth_type = 0x0, no_cache = 0, no_local_copy = 0, 
  unparsed_uri = 0x816fdb0 "http://172.16.0.1:8080/mdemjuuakziw", 
  uri = 0x816fdb0 "http://172.16.0.1:8080/mdemjuuakziw", filename = 0x0, 
  canonical_filename = 0x0, path_info = 0x0, args = 0x0, finfo = {pool = 0x0, 
    valid = 0, protection = 0, filetype = APR_NOFILE, user = 0, group = 0, 
    inode = 0, device = 0, nlink = 0, size = 0, csize = 0, atime = 0, 
    mtime = 0, ctime = 0, fname = 0x0, name = 0x0, filehand = 0x0}, 
  parsed_uri = {scheme = 0x816fdd8 "http", 
    hostinfo = 0x816fde0 "172.16.0.1:8080", user = 0x0, password = 0x0, 
    hostname = 0x816fdf0 "172.16.0.1", port_str = 0x816fe00 "8080", 
    path = 0x816fe08 "/mdemjuuakziw", query = 0x0, fragment = 0x0, 
    hostent = 0x0, port = 8080, is_initialized = 1, dns_looked_up = 0, 
    dns_resolved = 0}, used_path_info = 2, per_dir_config = 0x8112ca8, 
  request_config = 0x816fb00, htaccess = 0x0, output_filters = 0x8175158, 
  input_filters = 0x816fca8, proto_output_filters = 0x816fcc0, 
  proto_input_filters = 0x816fca8, eos_sent = 0}
(gdb) up 2
#4  0x807acbe in ap_process_request (r=0x816f050) at http_request.c:286
286             access_status = ap_process_request_internal(r);
(gdb) up
#5  0x8076a56 in ap_process_http_connection (c=0x816b128) at http_core.c:293
293                 ap_process_request(r);
(gdb) p c
$3 = (conn_rec *) 0x816b128
(gdb) p *c
$4 = {pool = 0x816b018, base_server = 0x80cf298, vhost_lookup_data = 0x0, 
  local_addr = 0x816b088, remote_addr = 0x816b0d0, 
  remote_ip = 0x816b458 "172.16.0.1", remote_host = 0x0, remote_logname = 0x0, 
  aborted = 0, keepalive = AP_CONN_UNKNOWN, double_reverse = 0, 
  keepalives = 0, local_ip = 0x816b448 "172.16.0.7", local_host = 0x0, id = 0, 
  conn_config = 0x816b180, notes = 0x816b2f0, input_filters = 0x816b478, 
  output_filters = 0x816b490, sbh = 0x8169118, bucket_alloc = 0x816d018}