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Rollup of 9 pull requests - #150901
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The documentation of `SipHasher` previously linked to a page about SipHash on https://131002.net, a domain registered to Jean-Philippe Aumasson, one of the co-authors of the original SipHash paper (alongside Daniel J Bernstein). That domain now redirects to another of Mr Aumasson's domains, https://www.aumasson.jp, but which does not host a similar page dedicated to SipHash. Instead, his site links to a GitHub repository containing a C implementation together with links to the original research paper. Mr Bernstein's own site, https://cr.yp.to, only hosts a copy of the research paper. Therefore the GitHub repository appears to be the most official and complete reference to which we can link.
Signed-off-by: tison <wander4096@gmail.com> Co-Authored-By: Orson Peters <orsonpeters@gmail.com> Signed-off-by: tison <wander4096@gmail.com>
std supports redirecting stdio file descriptors.
This patch removes one call to `std::mem::take` to save two `memcpy`s: `JsonRenderer::index` can be quite large as noted rust-lang#142335. `self.index` can be passed directly to `types::Crate`. This removal makes `self` immutable. The private `serialize_and_write` method is moved as a function: the `self` argument is replaced by `sess: &Session`. This `&Session` was fetched earlier in `after_krate` in all cases. This change allows to call `serialize_and_write` after `output_crate` is created, without having a conflict around the move of `self`: the borrow checker is now happy.
When PR rust-lang#147572 switched WASI to use Unix-style filesystem APIs, the open_to_and_set_permissions function for WASI was implemented to call OpenOptions::new().open() without setting any access mode flags. This causes std::fs::copy to fail with the error: "must specify at least one of read, write, or append access" The fix is to explicitly set .write(true), .create(true), and .truncate(true) on the OpenOptions, matching the behavior of the non-WASI Unix implementation but without the permission handling that WASI doesn't support. Minimal reproduction: fn main() { std::fs::write("/src.txt", b"test").unwrap(); match std::fs::copy("/src.txt", "/dst.txt") { Ok(_) => println!("PASS: fs::copy works!"), Err(e) => println!("FAIL: {}", e), } } # Compile and run: rustc +nightly --target wasm32-wasip2 test.rs -o test.wasm wasmtime -S cli --dir . test.wasm # Before fix: FAIL: must specify at least one of read, write, or append access # After fix: PASS: fs::copy works! Note: The existing test library/std/src/fs/tests.rs::copy_file_ok would have caught this regression if the std test suite ran on WASI targets. Currently std tests don't compile for wasm32-wasip2 due to Unix-specific test code in library/std/src/sys/fd/unix/tests.rs. Fixes the regression introduced in nightly-2025-12-10.
…oss35 Implement partial_sort_unstable for slice This refers to rust-lang#149046.
adding Ordering enum to minicore.rs, importing minicore in "tests/assembly-llvm/rust-abi-arg-attr.rs" test file this adds the `Ordering` enum to `minicore.rs`. consequently, this updates `tests/assembly-llvm/rust-abi-arg-attr.rs` to import `minicore` directly. previously, this test file contained traits like `Copy` `Clone` `PointeeSized`, which were giving a duplicate lang item error, so replace those by importing `minicore` completely.
…Jung Unix implementation for stdio set/take/replace Tracking issue: rust-lang#150667 ACP: rust-lang/libs-team#500
mGCA: Support array expression as direct const arguments tracking issue: rust-lang#132980resolve: rust-lang#150612 Support array expression as direct const arguments (e. g. [1, 2, N]) in min_generic_const_args. todo: * [x] Rebase another mGCA PR * [x] Add more test case * [x] Modify clippy code
Fix broken documentation links to SipHash The documentation of `SipHasher` previously linked to a page about SipHash on https://131002.net, a domain registered to Jean-Philippe Aumasson, one of the co-authors of the original SipHash paper (alongside Daniel J Bernstein). That domain now redirects to another of Mr Aumasson's domains, https://www.aumasson.jp, but which does not host a similar page dedicated to SipHash. Instead, his site links to a GitHub repository containing a C implementation together with links to the original research paper. Mr Bernstein's own site, https://cr.yp.to, only hosts a copy of the research paper. Therefore the GitHub repository appears to be the most official and complete reference to which we can link. Fixesrust-lang#150806 r? reddevilmidzy
…GuillaumeGomez rustdoc_json: Remove one call to `std::mem::take` in `after_krate` This patch removes one call to `std::mem::take` to save two `memcpy`s: `JsonRenderer::index` can be quite large as noted rust-lang#142335. `self.index` can be passed directly to `types::Crate`. This removal makes `self` immutable. The private `serialize_and_write` method is moved as a function: the `self` argument is replaced by `sess: &Session`. This `&Session` was fetched earlier in `after_krate` in all cases. This change allows to call `serialize_and_write` after `output_crate` is created, without having a conflict around the move of `self`: the borrow checker is now happy. I wasn't able to measure the performance impact though because I don't know how to modify `rustc-perf` as [@nnethercote did](rust-lang#142335 (comment)) (sorry). --- Follow up of rust-lang#142335. r? @nnethercote
Emit error instead of delayed bug when meeting mismatch type for const tuple And rename some tests Fixesrust-lang#150841 r? @BoxyUwU
Mention that `rustc_codegen_gcc` is a subtree in `rustc-dev-guide` Was asked on [zulip](https://rust-lang.zulipchat.com/#narrow/channel/386786-rustc-codegen-gcc/topic/Subtree.20handling/with/564354089). r? @RalfJung
Fix std::fs::copy on WASI by setting proper OpenOptions flags When PR rust-lang#147572 switched WASI to use Unix-style filesystem APIs, the open_to_and_set_permissions function for WASI was implemented to call OpenOptions::new().open() without setting any access mode flags. This causes std::fs::copy to fail with the error: "must specify at least one of read, write, or append access" The fix is to explicitly set .write(true), .create(true), and .truncate(true) on the OpenOptions, matching the behavior of the non-WASI Unix implementation but without the permission handling that WASI doesn't support. Minimal reproduction: ```rs fn main() { std::fs::write("/src.txt", b"test").unwrap(); match std::fs::copy("/src.txt", "/dst.txt") { Ok(_) => println!("PASS: fs::copy works!"), Err(e) => println!("FAIL: {}", e), } } ``` # Compile and run: rustc +nightly --target wasm32-wasip2 test.rs -o test.wasm wasmtime -S cli --dir . test.wasm # Before fix: FAIL: must specify at least one of read, write, or append access # After fix: PASS: fs::copy works! Note: The existing test library/std/src/fs/tests.rs::copy_file_ok would have caught this regression if the std test suite ran on WASI targets. Currently std tests don't compile for wasm32-wasip2 due to Unix-specific test code in library/std/src/sys/fd/unix/tests.rs. Fixes the regression introduced in nightly-2025-12-10. r? @alexcrichton
tgross35
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Jan 9, 2026
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Whoops, looks like there's already #150900 |
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Successful merges:
std::mem::takeinafter_krate#150867 (rustdoc_json: Remove one call tostd::mem::takeinafter_krate)rustc_codegen_gccis a subtree inrustc-dev-guide#150876 (Mention thatrustc_codegen_gccis a subtree inrustc-dev-guide)r? @ghost
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