Shared libraries [LWN.net]

Shared libraries

Posted Nov 25, 2025 9:12 UTC (Tue) by taladar (subscriber, #68407)
In reply to: Shared libraries by khim
Parent article: APT Rust requirement raises questions

Considering the number of edge cases the cargo-semver-checks author constantly documents on his blog even at the API level I doubt an approach that would satisfy Rust's high standard for correctness will ever exist at the ABI level.

It mostly works in C and C++ since those seem to have much lower standards for what they consider 'working'.

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Shared libraries

Posted Nov 25, 2025 13:49 UTC (Tue) by khim (subscriber, #9252) [Link]

With Swift approach (roughly: make dyn Trait as capable as impl Trait at the cost of implementation speed) there would be no material difference between ABI stability checks and API stability checks.

Sure, it would be a bit work to provide stable ABI and most crates wouldn't bother, but if someone want to create a “Rust platform” (similarly to how iOS and macOS are “Swift platforms”) then it's perfectly doable if costly.