diff --git a/store/rootmulti/store.go b/store/rootmulti/store.go index 64bf52b9b358..46ca30053897 100644 --- a/store/rootmulti/store.go +++ b/store/rootmulti/store.go @@ -632,6 +632,10 @@ func (rs *Store) CacheMultiStoreWithVersion(version int64) (types.CacheMultiStor if storeInfos[key.Name()] { return nil, err } + + // If the store donesn't exist at this version, create a dummy one to prevent + // nil pointer panic in newer query APIs. + cacheStore = dbadapter.Store{DB: dbm.NewMemDB()} } default: diff --git a/store/rootmulti/store_test.go b/store/rootmulti/store_test.go index 23669c82a9a0..60f02ac5dd26 100644 --- a/store/rootmulti/store_test.go +++ b/store/rootmulti/store_test.go @@ -101,16 +101,19 @@ func TestCacheMultiStoreWithVersion(t *testing.T) { require.Equal(t, kvStore.Get(k), v) // add new module stores (store4 and store5) to multi stores and commit - ms.MountStoreWithDB(types.NewKVStoreKey("store4"), types.StoreTypeIAVL, nil) - ms.MountStoreWithDB(types.NewKVStoreKey("store5"), types.StoreTypeIAVL, nil) + key4, key5 := types.NewKVStoreKey("store4"), types.NewKVStoreKey("store5") + ms.MountStoreWithDB(key4, types.StoreTypeIAVL, nil) + ms.MountStoreWithDB(key5, types.StoreTypeIAVL, nil) err = ms.LoadLatestVersionAndUpgrade(&types.StoreUpgrades{Added: []string{"store4", "store5"}}) require.NoError(t, err) ms.Commit() // cache multistore of version before adding store4 should works - _, err = ms.CacheMultiStoreWithVersion(1) + cms2, err := ms.CacheMultiStoreWithVersion(1) require.NoError(t, err) + require.Empty(t, cms2.GetKVStore(key4).Get([]byte("key"))) + // require we cannot commit (write) to a cache-versioned multi-store require.Panics(t, func() { kvStore.Set(k, []byte("newValue"))