pitrou commented on a change in pull request #8933:
URL: https://github.com/apache/arrow/pull/8933#discussion_r544382794
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File path: cpp/src/arrow/util/hashing.h
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@@ -690,7 +690,8 @@ class BinaryMemoTable : public MemoTable {
DCHECK_LE(start, size());
const builder_offset_type* offsets = binary_builder_.offsets_data();
- const builder_offset_type delta = offsets[start];
+ const builder_offset_type delta =
+ start < binary_builder_.value_data_length() ? offsets[start] : 0;
Review comment:
Can you post a followup PR (just reuse the same JIRA number)?
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