openharmony/third_party_rust_memoffset
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try to fix old macro

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Ralf Jung
2019-07-07 11:01:31 +02:00
parent cb9a42ca25
commit f4e1759d76
1 changed files with 1 additions and 1 deletions
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src/offset_of.rs
+1 -1
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@@ -79,7 +79,7 @@ macro_rules! offset_of {
// See above for a better version that only works with newer Rust.
let non_null = $crate::ptr::NonNull::<$parent>::dangling();
#[allow(unused_unsafe)]
let base_ptr = unsafe { non_null.as_ref() as *const _ };
let base_ptr = unsafe { non_null.as_ref() as *const $parent };
#[allow(unused_unsafe)]
let field_ptr = unsafe { &(*base_ptr).$field as *const _ };
let offset = (field_ptr as usize) - (base_ptr as usize);