Merge pull request #11179 from ARMmbed/storage_coverity_fixes

Zero initialise all NVStore&kvstore members

Author: Seppo Takalo

features/storage/kvstore/kv_map/KVMap.cpp

@@ -332,5 +332,5 @@ FileSystem *KVMap::get_external_filesystem_instance(const char *name)
     return ret != MBED_SUCCESS ? NULL : kv_config->external_fs;
 }
 
-}
+} // namespace mbed
 

features/storage/kvstore/tdbstore/TDBStore.cpp

@@ -126,7 +126,7 @@ static uint32_t calc_crc(uint32_t init_crc, uint32_t data_size, const void *data
 TDBStore::TDBStore(BlockDevice *bd) : _ram_table(0), _max_keys(0),
     _num_keys(0), _bd(bd), _buff_bd(0),  _free_space_offset(0), _master_record_offset(0),
     _master_record_size(0), _is_initialized(false), _active_area(0), _active_area_version(0), _size(0),
-    _prog_size(0), _work_buf(0), _key_buf(0), _variant_bd_erase_unit_size(false), _inc_set_handle(0)
+    _area_params{}, _prog_size(0), _work_buf(0), _key_buf(0), _variant_bd_erase_unit_size(false), _inc_set_handle(0)
 {
     for (int i = 0; i < _num_areas; i++) {
         _area_params[i] = { 0 };
@@ -419,6 +419,8 @@ int TDBStore::set_start(set_handle_t *handle, const char *key, size_t final_data
         // in the upper layers).
         ih->bd_base_offset = _master_record_offset;
         ih->new_key = false;
+        ram_table_ind = 0;
+        hash = 0;
     } else {
 
         _mutex.lock();

features/storage/nvstore/source/nvstore.cpp

@@ -145,8 +145,8 @@ static uint32_t crc32(uint32_t init_crc, uint32_t data_size, uint8_t *data_buf)
 }
 
 NVStore::NVStore() : _init_done(0), _init_attempts(0), _active_area(0), _max_keys(NVSTORE_MAX_KEYS),
-    _active_area_version(0), _free_space_offset(0), _size(0), _mutex(0), _offset_by_key(0), _flash(0),
-    _min_prog_size(0), _page_buf(0)
+    _active_area_version(0), _free_space_offset(0), _size(0), _mutex(0), _offset_by_key(0), _flash_area_params{},
+    _flash(0), _min_prog_size(0), _page_buf(0)
 {
     for (int i = 0; i < NVSTORE_NUM_AREAS; i++) {
         _flash_area_params[i] = { 0 };