viirya commented on code in PR #3687:
URL: https://github.com/apache/arrow-rs/pull/3687#discussion_r1103092176
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arrow/src/ffi_stream.rs:
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@@ -203,11 +204,11 @@ impl ExportedArrayStream {
let schema = FFI_ArrowSchema::try_from(reader.schema().as_ref());
match schema {
- Ok(mut schema) => unsafe {
- std::ptr::copy(&schema as *const FFI_ArrowSchema, out, 1);
- schema.release = None;
+ Ok(schema) => {
+ unsafe { std::ptr::copy(addr_of!(schema), out, 1) };
+ std::mem::forget(schema);
Review Comment:
Hmm, I suppose that you meant they are deallocated from stack?
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