jhorstmann commented on a change in pull request #8609:
URL: https://github.com/apache/arrow/pull/8609#discussion_r523458622
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File path: rust/arrow/src/memory.rs
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@@ -22,6 +22,14 @@ use std::alloc::Layout;
use std::mem::align_of;
use std::ptr::NonNull;
+/// Target pointer width of the targeted platform
+#[cfg(target_pointer_width = "64")]
+pub(crate) const POINTER_WIDTH: usize = 64;
Review comment:
If this is in bits, how is it related to the alignment check below? It
also makes the usage in the size calculations a little confusing since that
needs to convert to bytes.
Just an idea, could this be defined without the `cfg` attributes, something
like `std::mem::size_of::<*const u8>()`?
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