Add empty portable-atomic-util crate #38
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taiki-e
commented
Sep 12, 2022
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+30
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+48
| if version.minor < 36 { | ||
| println!("cargo:rustc-cfg=portable_atomic_no_alloc"); | ||
| } | ||
| // raw_ref_macros stabilized in Rust 1.51 (nightly-2021-01-31) https://github.com/rust-lang/rust/pull/80886 | ||
| if !version.probe(51, 2021, 1, 30) { | ||
| println!("cargo:rustc-cfg=portable_atomic_no_raw_ref_macros"); | ||
| } | ||
| // unsafe_op_in_unsafe_fn stabilized in Rust 1.52 (nightly-2021-03-11): https://github.com/rust-lang/rust/pull/79208 | ||
| if !version.probe(52, 2021, 3, 10) { | ||
| println!("cargo:rustc-cfg=portable_atomic_no_unsafe_op_in_unsafe_fn"); | ||
| } | ||
|
|
||
| if version.nightly { | ||
| // `cfg(sanitize = "..")` is not stabilized. | ||
| let sanitize = env::var("CARGO_CFG_SANITIZE").unwrap_or_default(); | ||
| if sanitize.contains("thread") { | ||
| println!("cargo:rustc-cfg=portable_atomic_sanitize_thread"); | ||
| } | ||
| } |
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IIRC, raw_ref_macros (addr_of! and addr_of_mut!), alloc, and cfg(sanitize = "thread") are needed to implement Arc. Some impls in #8 also need alloc.
|
bors r+ |
|
FYI @notgull |
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This adds an empty crate named
portable-atomic-util.For now, I'm considering putting the features proposed in #1 (#8) and #37 into this crate, but they may be merged into the main
portable-atomiccrate in the future.