properly check that index is in valid interval

wladich · Dec 5, 2020 · ed023fe · ed023fe
1 parent a4191d3
commit ed023fe
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkg/dem/reader.go b/pkg/dem/reader.go
@@ -48,7 +48,7 @@ func decompressTile(compressed []byte) (*TileRawData, error) {
 func (storage *StorageReader) GetTile(index TileIndex) (*Tile, error) {
 	x := index.X + 180*HgtSplitParts
 	y := index.Y + 90*HgtSplitParts
-	if x < 0 || y < 0 || x > len(storage.index) || y > len(storage.index[x]) {
+	if x < 0 || y < 0 || x >= len(storage.index) || y >= len(storage.index[x]) {
 		return nil, nil
 	}
 	tileFileIndex := storage.index[x][y]