bkietz commented on a change in pull request #7733:
URL: https://github.com/apache/arrow/pull/7733#discussion_r453851648
##########
File path: cpp/src/arrow/buffer.cc
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@@ -43,6 +44,56 @@ Result<std::shared_ptr<Buffer>> Buffer::CopySlice(const
int64_t start,
return std::move(new_buffer);
}
+namespace {
+
+Status CheckBufferSlice(const Buffer& buffer, int64_t offset, int64_t length) {
Review comment:
```c++
Status CheckSlice(int64_t original_length, int64_t slice_offset, int64_t
slice_length, const char* sliced_type) {
//...
}
```
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