Merge pull request #5891 from mloskot/ml/check-indexed-data-for-empty-values

Avoid dereferencing iterators over empty indexed data values
2020-12-01 15:26:58 +02:00
parent 50d9632ed7 58fbda0483
commit 18a0f6c1f8
1 changed files with 3 additions and 0 deletions
@@ -329,6 +329,9 @@ template <typename GroupBlockPolicy, storage::Ownership Ownership> struct Indexe
    // Return value at the given index
    ResultType at(std::uint32_t index) const
    {
+        if (values.empty())
+            return ResultType();
+
        // Get block external ad internal indices
        const BlocksNumberType block_idx = index / (BLOCK_SIZE + 1);
        const std::uint32_t internal_idx = index % (BLOCK_SIZE + 1);