city.c(409): warning #186: pointless comparison of unsigned integer with zero
    assert(impr_req <= B_LAST && impr_req >= 0);
    ^

connection.c(79): warning #186: pointless comparison of unsigned integer with zero
    assert (lvl >= 0 && lvl < ALLOW_NUM);
    ^

government.c(99): warning #186: pointless comparison of unsigned integer with zero
    assert(flag>=G_FIRST_FLAG && flag<G_LAST_FLAG);
    ^

government.c(127): warning #186: pointless comparison of unsigned integer with zero
    assert(hint>=G_FIRST_HINT && hint<G_LAST_HINT);
    ^

improvement.c(131): warning #186: pointless comparison of unsigned integer with zero
    if (id<0 || id>=B_LAST || id>=game.num_impr_types)
          ^

inputfile.c(589): warning #186: pointless comparison of unsigned integer with zero
    assert(type>=INF_TOK_FIRST && type<INF_TOK_LAST);
    ^

packets.c(167): warning #167: argument of type "long *" is incompatible with parameter of type "uLongf={uLong={unsigned long}} *"
  	    compress2(compressed, &compressed_size,
  	                          ^

packets.c(381): warning #167: argument of type "long *" is incompatible with parameter of type "uLongf={uLong={unsigned long}} *"
  	uncompress(decompressed, &decompressed_size,
  	                         ^

shared.c(1170): warning #186: pointless comparison of unsigned integer with zero
    assert(result >= 0 && result < ARRAY_SIZE(descriptions));
    ^

tech.c(295): warning #186: pointless comparison of unsigned integer with zero
    assert(flag>=0 && flag<TF_LAST);
    ^

unittype.c(264): warning #186: pointless comparison of unsigned integer with zero
    if ((id >= 0) && (id < UCL_LAST)) {
            ^

cityturn.c(592): warning #186: pointless comparison of unsigned integer with zero
    if (id >= 0 && id < B_LAST && want > 0) {
           ^

cityturn.c(605): warning #186: pointless comparison of unsigned integer with zero
    if (id >= 0 && id < B_LAST) {
           ^

diplomats.c(926): warning #186: pointless comparison of unsigned integer with zero
    if (improvement < 0) {
                    ^

sanitycheck.c(56): warning #186: pointless comparison of unsigned integer with zero
      assert(terrain >= T_ARCTIC && terrain < T_UNKNOWN);
      ^

sernet.c(721): warning #167: argument of type "int *" is incompatible with parameter of type "socklen_t={__socklen_t={unsigned int}} *restrict"
    if ((new_sock = accept(sockfd, &fromend.sockaddr, &fromlen)) == -1) {
                                                      ^

sernet.c(1051): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "char *"
    if (my_gethostname(hostname, sizeof(hostname)) != 0) {
                       ^

sernet.c(1052): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "char *"
      sz_strlcpy(hostname, "none");
      ^

sernet.c(1055): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "char *"
    my_snprintf(version, sizeof(version), "%d.%d.%d%s",
                ^

sernet.c(1060): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "char *"
      my_snprintf(status, sizeof(status), "Pregame");
                  ^

sernet.c(1063): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "char *"
      my_snprintf(status, sizeof(status), "Running");
                  ^

sernet.c(1066): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "char *"
      my_snprintf(status, sizeof(status), "Game over");
                  ^

sernet.c(1069): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "char *"
      my_snprintf(status, sizeof(status), "Waiting");
                  ^

sernet.c(1072): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "char *"
     my_snprintf(players, sizeof(players), "%d",
                 ^

sernet.c(1074): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "char *"
     my_snprintf(port, sizeof(port), "%d",
                 ^

sernet.c(1079): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "const char *"
    dio_put_string(&dout, hostname);
                          ^

sernet.c(1080): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "const char *"
    dio_put_string(&dout, port);
                          ^

sernet.c(1081): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "const char *"
    dio_put_string(&dout, version);
                          ^

sernet.c(1082): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "const char *"
    dio_put_string(&dout, status);
                          ^

sernet.c(1083): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "const char *"
    dio_put_string(&dout, players);
                          ^

cityrep.c(412): warning #144: a value of type "void *" cannot be used to initialize an entity of type "TestCityFunc"
    TestCityFunc test_func = g_object_get_data(parent, "freeciv_test_func");
                             ^

gui_main.c(215): warning #167: argument of type "const unsigned char *" is incompatible with parameter of type "const gchar={char} *"
    gchar *out = g_convert(src, nsrc, "UTF-8", network_charset, NULL, &len, NULL);
                           ^

gui_main.c(1159): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "const gchar={char} *"
      gray50 = gdk_bitmap_create_from_data(root_window, d1, 4, 4);
                                                        ^

gui_main.c(1160): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "const gchar={char} *"
      gray25 = gdk_bitmap_create_from_data(root_window, d2, 4, 4);
                                                        ^

gui_main.c(1161): warning #167: argument of type "unsigned char *" is incompatible with parameter of type "const gchar={char} *"
      black50 = gdk_bitmap_create_from_data(root_window, d3, 4, 4);
                                                         ^

citydlg_common.c(416): warning #188: enumerated type mixed with another type
      from = SP_ELVIS;
           ^

citydlg_common.c(417): warning #188: enumerated type mixed with another type
      to = SP_SCIENTIST;
         ^

citydlg_common.c(420): warning #188: enumerated type mixed with another type
      from = SP_SCIENTIST;
           ^

citydlg_common.c(421): warning #188: enumerated type mixed with another type
      to = SP_TAXMAN;
         ^

citydlg_common.c(424): warning #188: enumerated type mixed with another type
      from = SP_TAXMAN;
           ^

citydlg_common.c(425): warning #188: enumerated type mixed with another type
      to = SP_ELVIS;
         ^

citydlg_common.c(431): warning #188: enumerated type mixed with another type
    city_change_specialist(pcity, from, to);
                                  ^

citydlg_common.c(431): warning #188: enumerated type mixed with another type
    city_change_specialist(pcity, from, to);
                                        ^

clinet.c(808): warning #167: argument of type "int *" is incompatible with parameter of type "socklen_t={__socklen_t={unsigned int}} *restrict"
                     &fromend.sockaddr, &fromlen)) {
                                        ^

mapview_common.c(1177): warning #188: enumerated type mixed with another type
        put_tile_iso(x1, y1, D_T_L);
                             ^

mapview_common.c(1185): warning #188: enumerated type mixed with another type
        put_tile_iso(x1, y1, D_T_R);
                             ^

packhand.c(1533): warning #167: argument of type "char *" is incompatible with parameter of type "unsigned char *"
    new_tech = read_player_info_techs(pplayer, pinfo->inventions);
                                               ^

packhand.c(2201): warning #186: pointless comparison of unsigned integer with zero
    if(p->id < 0 || p->id >= game.num_impr_types || p->id >= B_LAST) {
             ^

packhand.c(2483): warning #186: pointless comparison of unsigned integer with zero
    if (p->id < T_FIRST || p->id >= T_COUNT) {
              ^

tilespec.c(2583): warning #186: pointless comparison of unsigned integer with zero
    assert(type >= 0 && type < NUM_TILES_CITIZEN);
    ^