Fix initialization error in to_arrow for empty string views #16033
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When converting an empty string view to arrow, we don't bother with copies from device, but rather create the arrow arrays directly. The offset buffer is therefore a singleton int32 array with zero in it. Previously, the initialization of this array was incorrect, since mutable_data() returns a uint8_t pointer, and so setting the single element could leave 24 or the 32 bits uninitialized. Fix this by using memset instead to zero out the full buffer.
wence-
commented
Jun 14, 2024
Co-authored-by: David Wendt <[email protected]>
davidwendt
approved these changes
Jun 14, 2024
bdice
approved these changes
Jun 14, 2024
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Description
When converting an empty string view to arrow, we don't bother with copies from device, but rather create the arrow arrays directly. The offset buffer is therefore a singleton int32 array with zero in it.
Previously, the initialization of this array was incorrect, since mutable_data() returns a uint8_t pointer, and so setting the single element could leave 24 of the 32 bits uninitialized.
Fix this by using memset instead to zero out the full buffer.
Checklist