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Correct a comment #2282

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Merged
merged 1 commit into from
Jan 7, 2024
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Correct a comment #2282

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4 changes: 1 addition & 3 deletions src/sys/socket/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -567,8 +567,6 @@ feature! {
/// let _ = cmsg_space!(RawFd, TimeVal);
/// # }
/// ```
// Unfortunately, CMSG_SPACE isn't a const_fn, or else we could return a
// stack-allocated array.
#[macro_export]
macro_rules! cmsg_space {
( $( $x:ty ),* ) => {
Expand All @@ -581,7 +579,7 @@ macro_rules! cmsg_space {

#[inline]
#[doc(hidden)]
pub fn cmsg_space<T>() -> usize {
pub const fn cmsg_space<T>() -> usize {
// SAFETY: CMSG_SPACE is always safe
unsafe { libc::CMSG_SPACE(mem::size_of::<T>() as libc::c_uint) as usize }
}
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