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compiler: manually implement DynSend for atomic primitives

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The manual `DynSend` implementation for `AtomicPtr` blocks the
auto-implementation for other atomic primitives since they forward to the same
`Atomic<T>` type now. This breakage cannot occur in user code as it depends on
`DynSend` being a custom auto-trait.
This commit is contained in:
joboet
2026-02-23 16:46:54 +01:00
parent fa66fef1d1
commit 4b86b1a11a
1 changed files with 8 additions and 3 deletions
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compiler/rustc_data_structures/src/marker.rs
+8 -3
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@@ -59,11 +59,16 @@ macro_rules! already_send {
// These structures are already `Send`.
already_send!(
[std::backtrace::Backtrace][std::io::Stdout][std::io::Stderr][std::io::Error][std::fs::File][std::panic::Location<'_>]
[rustc_arena::DroplessArena][jobserver_crate::Client][jobserver_crate::HelperThread]
[crate::memmap::Mmap][crate::profiling::SelfProfiler][crate::owned_slice::OwnedSlice]
[std::sync::atomic::AtomicBool][std::sync::atomic::AtomicUsize][std::sync::atomic::AtomicU8]
[std::sync::atomic::AtomicU32][std::backtrace::Backtrace][std::io::Stdout][std::io::Stderr]
[std::io::Error][std::fs::File][std::panic::Location<'_>][rustc_arena::DroplessArena]
[jobserver_crate::Client][jobserver_crate::HelperThread][crate::memmap::Mmap]
[crate::profiling::SelfProfiler][crate::owned_slice::OwnedSlice]
);
#[cfg(target_has_atomic = "64")]
already_send!([std::sync::atomic::AtomicU64]);
macro_rules! impl_dyn_send {
($($($attr: meta)* [$ty: ty where $($generics2: tt)*])*) => {
$(unsafe impl<$($generics2)*> DynSend for $ty {})*