pitrou commented on code in PR #35628:
URL: https://github.com/apache/arrow/pull/35628#discussion_r1231478575
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cpp/src/arrow/array/validate.cc:
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@@ -595,6 +614,61 @@ struct ValidateArrayImpl {
return Status::OK();
}
+ Status ValidateBinaryView(const BinaryViewType& type) {
+ int64_t headers_byte_size = data.buffers[1]->size();
+ int64_t required_headers = data.length + data.offset;
+ if (static_cast<int64_t>(headers_byte_size / sizeof(StringHeader)) <
+ required_headers) {
+ return Status::Invalid("Header buffer size (bytes): ", headers_byte_size,
+ " isn't large enough for length: ", data.length,
+ " and offset: ", data.offset);
+ }
+
Review Comment:
Because it's not an error if a buffer is larger than needed. This allows
slicing arrays quickly without having to slice their buffers individually.
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