80e0448947
Add `needs-target-has-atomic` directive Before this PR, the test writer has to specify platforms and architectures by hand for targets that have differing atomic width support. `#[cfg(target_has_atomic="...")]` is not quite the same because (1) you may have to specify additional matchers manually which has to be maintained individually, and (2) the `#[cfg]` blocks does not communicate to compiletest that a test would be ignored for a given target. This PR implements a `//@ needs-target-has-atomic` directive which admits a comma-separated list of required atomic widths that the target must satisfy in order for the test to run. ``` //@ needs-target-has-atomic: 8, 16, ptr ``` See <https://github.com/rust-lang/rust/issues/87377>. This PR supersedes #133095 and is co-authored by `@kei519,` because it was somewhat subtle, and it turned out easier to implement than to review. rustc-dev-guide docs PR: https://github.com/rust-lang/rustc-dev-guide/pull/2154 |
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This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Why Rust?
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Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrate with other languages.
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Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.
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