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Fix nightly_portable_simd after LaneCount removal. #344

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Merged
Lokathor merged 1 commit into from
Jan 31, 2026
+28 −1
Merged

Fix nightly_portable_simd after LaneCount removal. #344

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3 changes: 2 additions & 1 deletion Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ latest_stable_rust = [
# ALL FEATURES BELOW THIS ARE NOT SEMVER SUPPORTED! TEMPORARY ONLY!

# Enable support for `std::simd` types.
nightly_portable_simd = []
nightly_portable_simd = ["rustversion"]
# Enable support for unstable `std::arch` types (such as the AVX512 types).
nightly_stdsimd = []
# Enable `f16` and `f128`
Expand All @@ -108,6 +108,7 @@ nightly_docs = []

[dependencies]
bytemuck_derive = { version = "1.10.2", path = "derive", optional = true }
rustversion = { version = "1.0.22", optional = true }

[lints.rust]
unexpected_cfgs = { level = "deny", check-cfg = [
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13 changes: 13 additions & 0 deletions src/pod.rs
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Expand Up @@ -143,6 +143,7 @@ impl_unsafe_marker_for_simd!(
}
);

#[rustversion::before(2026-01-27)] // See https://github.com/Lokathor/bytemuck/issues/343
#[cfg(feature = "nightly_portable_simd")]
#[cfg_attr(
feature = "nightly_docs",
Expand All @@ -155,6 +156,18 @@ where
{
}

#[rustversion::since(2026-01-27)] // See https://github.com/Lokathor/bytemuck/issues/343
#[cfg(feature = "nightly_portable_simd")]
#[cfg_attr(
feature = "nightly_docs",
doc(cfg(feature = "nightly_portable_simd"))
)]
unsafe impl<T, const N: usize> Pod for core::simd::Simd<T, N>
where
T: core::simd::SimdElement + Pod,
{
}

impl_unsafe_marker_for_simd!(
#[cfg(all(target_arch = "x86", feature = "avx512_simd"))]
unsafe impl Pod for x86::{
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13 changes: 13 additions & 0 deletions src/zeroable.rs
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Expand Up @@ -222,6 +222,7 @@ impl_unsafe_marker_for_simd!(
}
);

#[rustversion::before(2026-01-27)] // See https://github.com/Lokathor/bytemuck/issues/343
#[cfg(feature = "nightly_portable_simd")]
#[cfg_attr(
feature = "nightly_docs",
Expand All @@ -234,6 +235,18 @@ where
{
}

#[rustversion::since(2026-01-27)] // See https://github.com/Lokathor/bytemuck/issues/343
#[cfg(feature = "nightly_portable_simd")]
#[cfg_attr(
feature = "nightly_docs",
doc(cfg(feature = "nightly_portable_simd"))
)]
unsafe impl<T, const N: usize> Zeroable for core::simd::Simd<T, N>
where
T: core::simd::SimdElement + Zeroable,
{
}

impl_unsafe_marker_for_simd!(
#[cfg(all(target_arch = "x86", feature = "avx512_simd"))]
unsafe impl Zeroable for x86::{
Expand Down