mapleFU commented on code in PR #44822:
URL: https://github.com/apache/arrow/pull/44822#discussion_r1947411708
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cpp/src/arrow/compute/kernels/scalar_cast_string.cc:
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@@ -46,6 +46,21 @@ namespace internal {
namespace {
+Result<std::shared_ptr<Buffer>> GetNullBitmapBuffer(const ArraySpan& in_array,
+ MemoryPool* pool) {
+ if (in_array.buffers[0].data == nullptr) {
+ return nullptr;
+ }
+
+ if (in_array.offset == 0) {
+ return in_array.GetBuffer(0);
+ }
+
+ // If a non-zero offset, we need to shift the bitmap
Review Comment:
@felipecrv Just curious can here uses Slicing Buffer if offset % 8 == 0
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