041f6668b5
Add `Atomic*::from_ptr`
This PR adds functions in the following form to all atomic types:
```rust
impl AtomicT {
pub const unsafe fn from_ptr<'a>(ptr: *mut T) -> &'a AtomicT;
}
```
r? `@m-ou-se` (we've talked about it before)
I'm not sure about docs & safety requirements, I'd appreciate some feedback on them.
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| .. | ||
| alloc | ||
| backtrace@07872f28cd | ||
| core | ||
| panic_abort | ||
| panic_unwind | ||
| portable-simd | ||
| proc_macro | ||
| profiler_builtins | ||
| rtstartup | ||
| rustc-std-workspace-alloc | ||
| rustc-std-workspace-core | ||
| rustc-std-workspace-std | ||
| std | ||
| stdarch@a0c30f3e3c | ||
| test | ||
| unwind | ||