illumos gate

Build errors with gcc 10/gcc7:

    door.c: In function 'process_get_request_from_doc':
    door.c:162: error: 'i' may be used uninitialized in this function [-Wuninitialized]
    *** Error code 1
    dmake: Fatal error: Command failed for target `door.o'
    Current working directory /code/illumos-gate/usr/src/cmd/isns/isnsd

    esi.c: In function 'esi_remove_obj':
    esi.c:588: error: 'uid' may be used uninitialized in this function [-Wuninitialized]
    *** Error code 1
    dmake: Fatal error: Command failed for target `esi.o'
    Current working directory /code/illumos-gate/usr/src/cmd/isns/isnsd

    scn.c: In function 'scn_disp1':
    scn.c:1302: error: 'lp' may be used uninitialized in this function [-Wuninitialized]
    *** Error code 1
    dmake: Fatal error: Command failed for target `scn.o'
    Current working directory /code/illumos-gate/usr/src/cmd/isns/isnsd

    func.c: In function 'dev_dereg':
    func.c:1192:25: error: 'puid' may be used uninitialized in this function [-Werror=maybe-uninitialized]
        if (ctrl == 0 &&
            ~~~~~~~~~~~~
     #ifndef SKIP_SRC_AUTH
     ~~~~~~~~~~~~~~~~~~~~~
            lc.curr_uid != 0 &&
            ~~~~~~~~~~~~~~~~~^~
            puid != lc.curr_uid) {
            ~~~~~~~~~~~~~~~~~~~
    cc1: all warnings being treated as errors
    *** Error code 1
    dmake: Fatal error: Command failed for target `func.o'
    Current working directory /code/illumos-gate/usr/src/cmd/isns/isnsd

    scn.c: In function 'scn_add_portal':
    scn.c:375:4: error: 'x' may be used uninitialized in this function [-Werror=maybe-uninitialized]
       x->ref ++;
       ~^~~~~
    cc1: all warnings being treated as errors
    *** Error code 1
    dmake: Fatal error: Command failed for target `scn.o'
    Current working directory /code/illumos-gate/usr/src/cmd/isns/isnsd

    isnsadm.c: In function 'modify_ddset_func':
    isnsadm.c:3252:13: error: 'id' may be used uninitialized in this function [-Werror=maybe-uninitialized]
     3252 |  if ((ret = build_rename_xml_doc(options->optarg, DiscoveryDomainSet,
          |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     3253 |   id, &doc)) == 0) {
          |   ~~~~~~~~~
    cc1: all warnings being treated as errors

    htable.c: In function 'avl_insert':
    htable.c:362:9: error: 'c' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      362 |    f->l = c;
          |    ~~~~~^~~
    cc1: all warnings being treated as errors

    dd.c: In function 'cb_update_ds_attr':
    dd.c:80:11: error: 'which' may be used uninitialized in this function [-Werror=maybe-uninitialized]
       80 |  uint32_t which;
          |           ^~~~~
    cc1: all warnings being treated as errors

    obj.c: In function 'pg_hval':
    obj.c:534:10: error: 'port' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      534 |   (void) snprintf(buff2, sizeof (buff2), "%d", port);
          |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    obj.c: In function 'make_unique_name':
    obj.c:3936:10: error: 'i' may be used uninitialized in this function [-Werror=maybe-uninitialized]
     3936 |   (void) sprintf(name, name_pattern[i], count);
          |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    obj.c: In function 'cb_verify_ref':
    obj.c:3499:9: error: 'evpp' may be used uninitialized in this function [-Werror=maybe-uninitialized]
     3499 |     evp = evpp[k];
          |     ~~~~^~~~~~~~~
    cc1: all warnings being treated as errors

    dseng.c: In function 'load_data':
    dseng.c:115:10: error: 'scn_name' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      115 |     ec = scn_list_load(
          |          ^~~~~~~~~~~~~~
      116 |         uid,
          |         ~~~~
      117 |         scn_name->value.ptr,
          |         ~~~~~~~~~~~~~~~~~~~~
      118 |         scn_name->len,
          |         ~~~~~~~~~~~~~~
      119 |         scn_bitmap->value.ui);
          |         ~~~~~~~~~~~~~~~~~~~~~
    cc1: all warnings being treated as errors

    In file included from dsapi.c:46:
    xml/data.c: In function 'xml_add_obj':
    xml/data.c:1065:11: error: 'prev' may be used uninitialized in this function [-Werror=maybe-uninitialized]
     1065 |    node = xmlAddNextSibling(prev, candidate);
          |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    admintf.c: In function 'get_lc_type':
    admintf.c:76:9: error: 'type' may be used uninitialized in this function [-Werror=maybe-uninitialized]
       76 |  return (type);
          |         ^
    admintf.c: In function 'get_lc_id':
    admintf.c:103:9: error: 'id' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      103 |  return (id);
          |         ^
    cc1: all warnings being treated as errors