mathieu/os-rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
No description
251262 commits 3 branches 0 tags 637 MiB
Rust 96.1%
RenderScript 0.7%
JavaScript 0.6%
Shell 0.6%
Fluent 0.4%
Other 1.4%
Find a file
bors 0e682e9875 Auto merge of #123347 - saethlin:only-allow-upstream-llvm-calls, r=Nilstrieb 
Only allow compiler_builtins to call LLVM intrinsics, not any link_name function

This is another case of accidental reliance on `inline(never)` like I rooted out in https://github.com/rust-lang/rust/pull/118770. Without this PR, attempting to build some large programs with `-Zcross-crate-inline-threshold=yes` with a sysroot also compiled with that flag will result in linker errors like this:
```
  = note: /usr/bin/ld: /tmp/cargo-installNrfN4T/x86_64-unknown-linux-gnu/release/deps/libcompiler_builtins-d2a9b69f4e45b883.rlib(compiler_builtins-d2a9b69f4e45b883.compiler_builtins.dbbc6c2ca970faa4-cgu.0.rcgu.o): in function `core::panicking::panic_fmt':
          /home/ben/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/panicking.rs:72:(.text.unlikely._ZN4core9panicking9panic_fmt17ha407cc99e97c942fE+0x31): undefined reference to `rust_begin_unwind'
```
With `-Zcross-crate-inline-threshold=yes` we can inline `panic_fmt` into `compiler_builtins`. Then we end up with a call to an upstream monomorphization, but one that has a `link_name` set. But unlike LLVM's magic intrinsic names, this link name is going to make it to the linker, and then we have a problem.

This logic looks scuffed, but also we're doing this in 4 other places. Don't know if that means it's good or bad.
1684a753db/compiler/rustc_codegen_cranelift/src/abi/mod.rs (L386)
1684a753db/compiler/rustc_ast_passes/src/feature_gate.rs (L306)
1684a753db/compiler/rustc_codegen_ssa/src/codegen_attrs.rs (L609)
1684a753db/compiler/rustc_codegen_gcc/src/declare.rs (L170)
2024-04-02 09:41:27 +00:00
.github Revert cargo update changes 2024-03-26 15:36:12 +00:00
.reuse std: move Once implementations to sys 2024-03-12 15:41:06 +01:00
compiler Auto merge of #123347 - saethlin:only-allow-upstream-llvm-calls, r=Nilstrieb 2024-04-02 09:41:27 +00:00
library Auto merge of #122945 - andy-k:sorted-vec-example, r=jhpratt 2024-04-02 03:14:05 +00:00
LICENSES Add missing CC-BY-SA-4.0. 2023-11-27 11:03:53 +00:00
src Auto merge of #123336 - workingjubilee:strip-the-trace-off-my-back, r=Nilstrieb 2024-04-02 07:39:10 +00:00
tests Fix obligation param and bless tests 2024-04-01 22:48:23 -04:00
.editorconfig Only use max_line_length = 100 for *.rs 2023-07-10 15:18:36 -07:00
.git-blame-ignore-revs Ignore compiletest test directive migration commits 2024-02-22 18:55:02 +00:00
.gitattributes Rename config.toml.example to config.example.toml 2023-03-11 14:10:00 -08:00
.gitignore don't globally ignore rustc-ice files 2023-09-16 09:44:44 +02:00
.gitmodules Update to LLVM 18 2024-02-13 10:33:40 +01:00
.mailmap Add my former address to .mailmap 2024-03-25 18:48:54 -07:00
Cargo.lock Auto merge of #122972 - beetrees:use-align-type, r=fee1-dead 2024-04-01 03:16:45 +00:00
Cargo.toml Add a test 2024-03-20 23:36:05 -04:00
CODE_OF_CONDUCT.md Remove the code of conduct; instead link https://www.rust-lang.org/conduct.html 2019-10-05 22:55:19 +02:00
config.example.toml use more accurate terminology 2024-03-19 20:32:55 +02:00
configure Ensure ./configure works when configure.py path contains spaces 2024-02-16 18:57:22 +00:00
CONTRIBUTING.md fix: Update CONTRIBUTING.md recommend -> recommended 2023-11-16 23:57:09 +05:30
COPYRIGHT Update COPYRIGHT file 2022-10-30 10:23:14 -04:00
INSTALL.md chore: fix some comments 2024-03-27 22:32:53 +08:00
LICENSE-APACHE Remove appendix from LICENCE-APACHE 2019-12-30 14:25:53 +00:00
LICENSE-MIT LICENSE-MIT: Remove inaccurate (misattributed) copyright notice 2017-07-26 16:51:58 -07:00
README.md Update Readme 2024-01-15 13:57:29 -08:00
RELEASES.md Forward port 1.77.1 release notes 2024-03-29 10:44:19 +03:00
rust-bors.toml Increase timeout for new bors bot 2024-03-13 08:31:07 +01:00
rustfmt.toml Remove exception for deleted file from rustfmt.toml 2024-03-08 20:46:33 +00:00
triagebot.toml beep boop 2024-03-31 20:18:37 +01:00
x Make x capable of resolving symlinks 2023-10-14 17:53:33 +03:00
x.ps1 use & instead of start-process in x.ps1 2023-12-09 09:46:16 -05:00
x.py Fix recent python linting errors 2023-08-02 04:40:28 -04:00

README.md

The Rust Programming Language

Rust Community

This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.

Note: this README is for users rather than contributors. If you wish to contribute to the compiler, you should read CONTRIBUTING.md instead.

Table of Contents

Quick Start

Read "Installation" from The Book.

Installing from Source

If you really want to install from source (though this is not recommended), see INSTALL.md.

Getting Help

See https://www.rust-lang.org/community for a list of chat platforms and forums.

Contributing

See CONTRIBUTING.md.

License

Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.

See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.

Trademark

The Rust Foundation owns and protects the Rust and Cargo trademarks and logos (the "Rust Trademarks").

If you want to use these names or brands, please read the media guide.

Third-party logos may be subject to third-party copyrights and trademarks. See Licenses for details.