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Fixes double bug in Send-Sync example #401

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Merged
merged 1 commit into from
Feb 13, 2023
Merged

Fixes double bug in Send-Sync example #401

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5 changes: 3 additions & 2 deletions src/send-and-sync.md
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Original file line number Diff line number Diff line change
Expand Up @@ -94,6 +94,7 @@ to the heap.
use std::{
mem::{align_of, size_of},
ptr,
cmp::max,
};

struct Carton<T>(ptr::NonNull<T>);
Expand All @@ -105,8 +106,8 @@ impl<T> Carton<T> {
let mut memptr: *mut T = ptr::null_mut();
unsafe {
let ret = libc::posix_memalign(
(&mut memptr).cast(),
align_of::<T>(),
(&mut memptr as *mut *mut T).cast(),
max(align_of::<T>(), size_of::<usize>()),
size_of::<T>()
);
assert_eq!(ret, 0, "Failed to allocate or invalid alignment");
Expand Down