tustvold commented on code in PR #3687:
URL: https://github.com/apache/arrow-rs/pull/3687#discussion_r1102615698
##########
arrow/src/ffi.rs:
##########
@@ -592,36 +219,22 @@ unsafe fn create_buffer(
index: usize,
len: usize,
) -> Option<Buffer> {
- if array.buffers.is_null() || array.n_buffers == 0 {
+ if array.num_buffers() == 0 {
return None;
}
- let buffers = array.buffers as *mut *const u8;
-
- assert!(index < array.n_buffers as usize);
- let ptr = *buffers.add(index);
-
- NonNull::new(ptr as *mut u8)
+ NonNull::new(array.buffer(index) as _)
.map(|ptr| Buffer::from_custom_allocation(ptr, len, owner))
}
-fn create_child(
+fn create_child<'a>(
Review Comment:
This method was actually previously incorrect, as it `coerced` a non-static
borrow into a static borrow. Fortunately the fix is unobtrusive, and doesn't
impact the public API
##########
arrow/src/ffi.rs:
##########
@@ -592,36 +219,22 @@ unsafe fn create_buffer(
index: usize,
len: usize,
) -> Option<Buffer> {
- if array.buffers.is_null() || array.n_buffers == 0 {
+ if array.num_buffers() == 0 {
return None;
}
- let buffers = array.buffers as *mut *const u8;
-
- assert!(index < array.n_buffers as usize);
- let ptr = *buffers.add(index);
-
- NonNull::new(ptr as *mut u8)
+ NonNull::new(array.buffer(index) as _)
.map(|ptr| Buffer::from_custom_allocation(ptr, len, owner))
}
-fn create_child(
+fn create_child<'a>(
Review Comment:
This method was actually previously incorrect, as it "coerced" a non-static
borrow into a static borrow. Fortunately the fix is unobtrusive, and doesn't
impact the public API
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