conditional passing of edition for core #1163
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nbdd0121
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May 17, 2025
Rust 1.87 (released on 2025-05-15) compiles core library with edition 2024 instead of 2021 [1]. Ensure that the edition matches libcore's expectation to avoid potential breakage. Cc: [email protected] # Needed in 6.12.y and later (Rust is pinned in older LTSs). Link: rust-lang/rust#138162 [1] Closes: Rust-for-Linux#1163 Signed-off-by: Gary Guo <[email protected]>
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Since PR rust-lang/rust#138162, the Rust
stdlibrary andcorelibraries use edition 2024. The Linux makefile hardcodes edition 2021 however.Right now, core compiles fine on editions 2021 and 2024, but my PR rust-lang/rust#140966 encountered a build failure of the rust-for-linux CI.
Talked to @nbdd0121 about this. According to them, it should be possible to add conditional compilation dependent on the rust compiler used to compile the kernel. This matches the expectations of the
corelibrary the most I'd say: on releases before 1.87.0, the compiler used edition 2021, and on 1.87.0 and later, it uses 2024.cc @ehuss
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