/rust/registry/src/index.crates.io-6f17d22bba15001f/hashbrown-0.15.4/src/util.rs

Source (jump to first uncovered line)
// FIXME: Branch prediction hint. This is currently only available on nightly
// but it consistently improves performance by 10-15%.
#[cfg(not(feature = "nightly"))]
pub(crate) use core::convert::{identity as likely, identity as unlikely};
#[cfg(feature = "nightly")]
pub(crate) use core::intrinsics::{likely, unlikely};

// FIXME: use strict provenance functions once they are stable.
// Implement it with a transmute for now.
#[inline(always)]
#[allow(clippy::useless_transmute)] // clippy is wrong, cast and transmute are different here
pub(crate) fn invalid_mut<T>(addr: usize) -> *mut T {
    unsafe { core::mem::transmute(addr) }
}

Coverage Report

Created: 2025-07-11 06:43

Line	Count	Source (jump to first uncovered line)
1		// FIXME: Branch prediction hint. This is currently only available on nightly
2		// but it consistently improves performance by 10-15%.
3		#[cfg(not(feature = "nightly"))]
4		pub(crate) use core::convert::{identity as likely, identity as unlikely};
5		#[cfg(feature = "nightly")]
6		pub(crate) use core::intrinsics::{likely, unlikely};
7
8		// FIXME: use strict provenance functions once they are stable.
9		// Implement it with a transmute for now.
10		#[inline(always)]
11		#[allow(clippy::useless_transmute)] // clippy is wrong, cast and transmute are different here
12	0	pub(crate) fn invalid_mut<T>(addr: usize) -> *mut T {
13	0	unsafe { core::mem::transmute(addr) }
14	0	}