post-merge: -Werror fixes in 10.2

cmake/mariadb_connector_c.cmake

@@ -37,3 +37,8 @@ SET(CLIENT_PLUGIN_PVIO_SOCKET STATIC)
 
 MESSAGE("== Configuring MariaDB Connector/C")
 ADD_SUBDIRECTORY(libmariadb)
+
+#remove after merging libmariadb > v3.0.9
+IF(TARGET caching_sha2_password AND CMAKE_C_FLAGS_DEBUG MATCHES "-Werror")
+  SET_PROPERTY(TARGET caching_sha2_password APPEND_STRING PROPERTY COMPILE_FLAGS -Wno-unused-function)
+ENDIF()

sql/spatial.cc

@@ -238,17 +238,17 @@ int Geometry::as_wkt(String *wkt, const char **end)
 
 
 static const uchar type_keyname[]= "type";
-static const int type_keyname_len= 4;
+static const uint type_keyname_len= 4;
 static const uchar coord_keyname[]= "coordinates";
-static const int coord_keyname_len= 11;
+static const uint coord_keyname_len= 11;
 static const uchar geometries_keyname[]= "geometries";
-static const int geometries_keyname_len= 10;
+static const uint geometries_keyname_len= 10;
 static const uchar features_keyname[]= "features";
-static const int features_keyname_len= 8;
+static const uint features_keyname_len= 8;
 static const uchar geometry_keyname[]= "geometry";
-static const int geometry_keyname_len= 8;
+static const uint geometry_keyname_len= 8;
 
-static const int max_keyname_len= 11; /*'coordinates' keyname is the longest.*/
+static const uint max_keyname_len= 11; /*'coordinates' keyname is the longest.*/
 
 static const uchar feature_type[]= "feature";
 static const int feature_type_len= 7;

storage/innobase/buf/buf0dump.cc

@@ -392,7 +392,7 @@ buf_dump(
 			if (SHUTTING_DOWN() && !(j % 1024)) {
 				service_manager_extend_timeout(INNODB_EXTEND_TIMEOUT_INTERVAL,
 					"Dumping buffer pool "
-					ULINTPF "/" ULINTPF ", "
+					ULINTPF "/%lu, "
 					"page " ULINTPF "/" ULINTPF,
 					i + 1, srv_buf_pool_instances,
 					j + 1, n_pages);

strings/json_lib.c

@@ -1409,7 +1409,7 @@ int json_find_paths_next(json_engine_t *je, json_find_paths_t *state)
           if (!json_key_matches(je, &key_name))
             continue;
         }
-        if (cur_step - state->paths[p_c].last_step == state->cur_depth)
+        if (cur_step == state->paths[p_c].last_step + state->cur_depth)
           path_found= TRUE;
         else
         {
@@ -1442,7 +1442,7 @@ int json_find_paths_next(json_engine_t *je, json_find_paths_t *state)
             cur_step->n_item == state->array_counters[state->cur_depth])
         {
           /* Array item matches. */
-          if (cur_step - state->paths[p_c].last_step == state->cur_depth)
+          if (cur_step == state->paths[p_c].last_step + state->cur_depth)
             path_found= TRUE;
           else
           {