make cargo test work for bootstrap self test

.mailmap

@@ -609,6 +609,7 @@ Shohei Wada <[email protected]>
 Shotaro Yamada <[email protected]>
 Shotaro Yamada <[email protected]> <[email protected]>
 Shyam Sundar B <[email protected]>
+Sidney Cammeresi <[email protected]> <[email protected]>
 Simon Barber-Dueck <[email protected]> Simon BD <simon@server>
 Simon Sapin <[email protected]> <[email protected]>
 Simonas Kazlauskas <[email protected]> Simonas Kazlauskas <[email protected]>

Cargo.lock

@@ -568,7 +568,7 @@ checksum = "b94f61472cee1439c0b966b47e3aca9ae07e45d070759512cd390ea2bebc6675"
 
 [[package]]
 name = "clippy"
-version = "0.1.91"
+version = "0.1.92"
 dependencies = [
  "anstream",
  "askama",
@@ -595,7 +595,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_config"
-version = "0.1.91"
+version = "0.1.92"
 dependencies = [
  "clippy_utils",
  "itertools",
@@ -618,7 +618,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_lints"
-version = "0.1.91"
+version = "0.1.92"
 dependencies = [
  "arrayvec",
  "cargo_metadata 0.18.1",
@@ -649,7 +649,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_utils"
-version = "0.1.91"
+version = "0.1.92"
 dependencies = [
  "arrayvec",
  "itertools",
@@ -674,7 +674,7 @@ checksum = "fe6d2e5af09e8c8ad56c969f2157a3d4238cebc7c55f0a517728c38f7b200f81"
 dependencies = [
  "serde",
  "termcolor",
- "unicode-width 0.1.14",
+ "unicode-width 0.2.1",
 ]
 
 [[package]]
@@ -937,23 +937,24 @@ dependencies = [
 
 [[package]]
 name = "cxx"
-version = "1.0.168"
+version = "1.0.185"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7aa144b12f11741f0dab5b4182896afad46faa0598b6a061f7b9d17a21837ba7"
+checksum = "2f81de88da10862f22b5b3a60f18f6f42bbe7cb8faa24845dd7b1e4e22190e77"
 dependencies = [
  "cc",
+ "cxx-build",
  "cxxbridge-cmd",
  "cxxbridge-flags",
  "cxxbridge-macro",
- "foldhash",
+ "foldhash 0.2.0",
  "link-cplusplus",
 ]
 
 [[package]]
 name = "cxx-build"
-version = "1.0.168"
+version = "1.0.185"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12d3cbb84fb003242941c231b45ca9417e786e66e94baa39584bd99df3a270b6"
+checksum = "5edd58bf75c3fdfc80d79806403af626570662f7b6cc782a7fabe156166bd6d6"
 dependencies = [
  "cc",
  "codespan-reporting",
@@ -966,9 +967,9 @@ dependencies = [
 
 [[package]]
 name = "cxxbridge-cmd"
-version = "1.0.168"
+version = "1.0.185"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fa36b7b249d43f67a3f54bd65788e35e7afe64bbc671396387a48b3e8aaea94"
+checksum = "fd46bf2b541a4e0c2d5abba76607379ee05d68e714868e3cb406dc8d591ce2d2"
 dependencies = [
  "clap",
  "codespan-reporting",
@@ -980,15 +981,15 @@ dependencies = [
 
 [[package]]
 name = "cxxbridge-flags"
-version = "1.0.168"
+version = "1.0.185"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77707c70f6563edc5429618ca34a07241b75ebab35bd01d46697c75d58f8ddfe"
+checksum = "2c79b68f6a3a8f809d39b38ae8af61305a6113819b19b262643b9c21353b92d9"
 
 [[package]]
 name = "cxxbridge-macro"
-version = "1.0.168"
+version = "1.0.185"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ede6c0fb7e318f0a11799b86ee29dcf17b9be2960bd379a6c38e1a96a6010fff"
+checksum = "862b7fdb048ff9ef0779a0d0a03affd09746c4c875543746b640756be9cff2af"
 dependencies = [
  "indexmap",
  "proc-macro2",
@@ -1051,7 +1052,7 @@ dependencies = [
 
 [[package]]
 name = "declare_clippy_lint"
-version = "0.1.91"
+version = "0.1.92"
 
 [[package]]
 name = "derive-where"
@@ -1388,6 +1389,12 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
 
+[[package]]
+name = "foldhash"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77ce24cb58228fbb8aa041425bb1050850ac19177686ea6e0f41a70416f56fdb"
+
 [[package]]
 name = "form_urlencoded"
 version = "1.2.1"
@@ -1567,7 +1574,7 @@ checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 dependencies = [
  "allocator-api2",
  "equivalent",
- "foldhash",
+ "foldhash 0.1.5",
  "serde",
 ]
 
@@ -2160,9 +2167,9 @@ dependencies = [
 
 [[package]]
 name = "link-cplusplus"
-version = "1.0.10"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a6f6da007f968f9def0d65a05b187e2960183de70c160204ecfccf0ee330212"
+checksum = "7f78c730aaa7d0b9336a299029ea49f9ee53b0ed06e9202e8cb7db9bae7b8c82"
 dependencies = [
  "cc",
 ]
@@ -4235,6 +4242,7 @@ name = "rustc_mir_transform"
 version = "0.0.0"
 dependencies = [
  "either",
+ "hashbrown",
  "itertools",
  "rustc_abi",
  "rustc_arena",
@@ -4817,9 +4825,9 @@ dependencies = [
 
 [[package]]
 name = "rustfix"
-version = "0.8.1"
+version = "0.8.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81864b097046da5df3758fdc6e4822bbb70afa06317e8ca45ea1b51cb8c5e5a4"
+checksum = "82fa69b198d894d84e23afde8e9ab2af4400b2cba20d6bf2b428a8b01c222c5a"
 dependencies = [
  "serde",
  "serde_json",

RELEASES.md

@@ -1,3 +1,129 @@
+Version 1.90.0 (2025-09-18)
+===========================
+
+<a id="1.90-Language"></a>
+
+Language
+--------
+- [Split up the `unknown_or_malformed_diagnostic_attributes` lint](https://github.com/rust-lang/rust/pull/140717). This lint has been split up into four finer-grained lints, with `unknown_or_malformed_diagnostic_attributes` now being the lint group that contains these lints:
+    1. `unknown_diagnostic_attributes`: unknown to the current compiler
+    2. `misplaced_diagnostic_attributes`: placed on the wrong item
+    3. `malformed_diagnostic_attributes`: malformed attribute syntax or options
+    4. `malformed_diagnostic_format_literals`: malformed format string literal
+- [Allow constants whose final value has references to mutable/external memory, but reject such constants as patterns](https://github.com/rust-lang/rust/pull/140942)
+- [Allow volatile access to non-Rust memory, including address 0](https://github.com/rust-lang/rust/pull/141260)
+
+
+<a id="1.90-Compiler"></a>
+
+Compiler
+--------
+- [Use `lld` by default on `x86_64-unknown-linux-gnu`](https://github.com/rust-lang/rust/pull/140525).
+- [Tier 3 `musl` targets now link dynamically by default](https://github.com/rust-lang/rust/pull/144410). Affected targets:
+    - `mips64-unknown-linux-muslabi64`
+    - `powerpc64-unknown-linux-musl`
+    - `powerpc-unknown-linux-musl`
+    - `powerpc-unknown-linux-muslspe`
+    - `riscv32gc-unknown-linux-musl`
+    - `s390x-unknown-linux-musl`
+    - `thumbv7neon-unknown-linux-musleabihf`
+
+
+<a id="1.90-Platform-Support"></a>
+
+Platform Support
+----------------
+- [Demote `x86_64-apple-darwin` to Tier 2 with host tools](https://github.com/rust-lang/rust/pull/145252)
+
+
+Refer to Rust's [platform support page][platform-support-doc]
+for more information on Rust's tiered platform support.
+
+[platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html
+
+<a id="1.90-Libraries"></a>
+
+Libraries
+---------
+- [Stabilize `u*::{checked,overflowing,saturating,wrapping}_sub_signed`](https://github.com/rust-lang/rust/issues/126043)
+- [Allow comparisons between `CStr`, `CString`, and `Cow<CStr>`](https://github.com/rust-lang/rust/pull/137268)
+- [Remove some unsized tuple impls since unsized tuples can't be constructed](https://github.com/rust-lang/rust/pull/138340)
+- [Set `MSG_NOSIGNAL` for `UnixStream`](https://github.com/rust-lang/rust/pull/140005)
+- [`proc_macro::Ident::new` now supports `$crate`.](https://github.com/rust-lang/rust/pull/141996)
+- [Guarantee the pointer returned from `Thread::into_raw` has at least 8 bytes of alignment](https://github.com/rust-lang/rust/pull/143859)
+
+
+<a id="1.90-Stabilized-APIs"></a>
+
+Stabilized APIs
+---------------
+
+- [`u{n}::checked_sub_signed`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.checked_sub_signed)
+- [`u{n}::overflowing_sub_signed`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.overflowing_sub_signed)
+- [`u{n}::saturating_sub_signed`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.saturating_sub_signed)
+- [`u{n}::wrapping_sub_signed`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.wrapping_sub_signed)
+- [`impl Copy for IntErrorKind`](https://doc.rust-lang.org/stable/std/num/enum.IntErrorKind.html#impl-Copy-for-IntErrorKind)
+- [`impl Hash for IntErrorKind`](https://doc.rust-lang.org/stable/std/num/enum.IntErrorKind.html#impl-Hash-for-IntErrorKind)
+- [`impl PartialEq<&CStr> for CStr`](https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#impl-PartialEq%3C%26CStr%3E-for-CStr)
+- [`impl PartialEq<CString> for CStr`](https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#impl-PartialEq%3CCString%3E-for-CStr)
+- [`impl PartialEq<Cow<CStr>> for CStr`](https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#impl-PartialEq%3CCow%3C'_,+CStr%3E%3E-for-CStr)
+- [`impl PartialEq<&CStr> for CString`](https://doc.rust-lang.org/stable/std/ffi/struct.CString.html#impl-PartialEq%3C%26CStr%3E-for-CString)
+- [`impl PartialEq<CStr> for CString`](https://doc.rust-lang.org/stable/std/ffi/struct.CString.html#impl-PartialEq%3CCStr%3E-for-CString)
+- [`impl PartialEq<Cow<CStr>> for CString`](https://doc.rust-lang.org/stable/std/ffi/struct.CString.html#impl-PartialEq%3CCow%3C'_,+CStr%3E%3E-for-CString)
+- [`impl PartialEq<&CStr> for Cow<CStr>`](https://doc.rust-lang.org/stable/std/borrow/enum.Cow.html#impl-PartialEq%3C%26CStr%3E-for-Cow%3C'_,+CStr%3E)
+- [`impl PartialEq<CStr> for Cow<CStr>`](https://doc.rust-lang.org/stable/std/borrow/enum.Cow.html#impl-PartialEq%3CCStr%3E-for-Cow%3C'_,+CStr%3E)
+- [`impl PartialEq<CString> for Cow<CStr>`](https://doc.rust-lang.org/stable/std/borrow/enum.Cow.html#impl-PartialEq%3CCString%3E-for-Cow%3C'_,+CStr%3E)
+
+
+These previously stable APIs are now stable in const contexts:
+
+- [`<[T]>::reverse`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.reverse)
+- [`f32::floor`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.floor)
+- [`f32::ceil`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.ceil)
+- [`f32::trunc`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.trunc)
+- [`f32::fract`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.fract)
+- [`f32::round`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.round)
+- [`f32::round_ties_even`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.round_ties_even)
+- [`f64::floor`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.floor)
+- [`f64::ceil`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.ceil)
+- [`f64::trunc`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.trunc)
+- [`f64::fract`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.fract)
+- [`f64::round`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.round)
+- [`f64::round_ties_even`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.round_ties_even)
+
+
+<a id="1.90-Cargo"></a>
+
+Cargo
+-----
+- [Add `http.proxy-cainfo` config for proxy certs](https://github.com/rust-lang/cargo/pull/15374/)
+- [Use `gix` for `cargo package`](https://github.com/rust-lang/cargo/pull/15534/)
+- [feat(publish): Stabilize multi-package publishing](https://github.com/rust-lang/cargo/pull/15636/)
+
+<a id="1.90-Rustdoc"></a>
+
+Rustdoc
+-----
+- [Add ways to collapse all impl blocks](https://github.com/rust-lang/rust/pull/141663). Previously the "Summary" button and "-" keyboard shortcut would never collapse `impl` blocks, now they do when shift is held
+- [Display unsafe attributes with `unsafe()` wrappers](https://github.com/rust-lang/rust/pull/143662)
+
+
+<a id="1.90-Compatibility-Notes"></a>
+
+Compatibility Notes
+-------------------
+- [Use `lld` by default on `x86_64-unknown-linux-gnu`](https://github.com/rust-lang/rust/pull/140525).
+  See also <https://blog.rust-lang.org/2025/09/01/rust-lld-on-1.90.0-stable/>.
+- [Make `core::iter::Fuse`'s `Default` impl construct `I::default()` internally as promised in the docs instead of always being empty](https://github.com/rust-lang/rust/pull/140985)
+- [Set `MSG_NOSIGNAL` for `UnixStream`](https://github.com/rust-lang/rust/pull/140005)
+  This may change program behavior but results in the same behavior as other primitives (e.g., stdout, network sockets).
+  Programs relying on signals to terminate them should update handling of sockets to handle errors on write by exiting.
+- [On Unix `std::env::home_dir` will use the fallback if the `HOME` environment variable is empty](https://github.com/rust-lang/rust/pull/141840)
+- We now [reject unsupported `extern "{abi}"`s consistently in all positions](https://github.com/rust-lang/rust/pull/142134). This primarily affects the use of implementing traits on an `extern "{abi}"` function pointer, like `extern "stdcall" fn()`, on a platform that doesn't support that, like aarch64-unknown-linux-gnu. Direct usage of these unsupported ABI strings by declaring or defining functions was already rejected, so this is only a change for consistency.
+- [const-eval: error when initializing a static writes to that static](https://github.com/rust-lang/rust/pull/143084)
+- [Check that the `proc_macro_derive` macro has correct arguments when applied to the crate root](https://github.com/rust-lang/rust/pull/143607)
+
+
 Version 1.89.0 (2025-08-07)
 ==========================
 

bootstrap.example.toml

@@ -325,6 +325,9 @@
 # Defaults to the Python interpreter used to execute x.py.
 #build.python = "python"
 
+# The path to (or name of) the resource compiler executable to use on Windows.
+#build.windows-rc = "rc.exe"
+
 # The path to the REUSE executable to use. Note that REUSE is not required in
 # most cases, as our tooling relies on a cached (and shrunk) copy of the
 # REUSE output present in the git repository and in our source tarballs.
@@ -859,6 +862,14 @@
 # Trigger a `DebugBreak` after an internal compiler error during bootstrap on Windows
 #rust.break-on-ice = true
 
+# Set the number of threads for the compiler frontend used during compilation of Rust code (passed to `-Zthreads`).
+# The valid options are:
+# 0 - Set the number of threads according to the detected number of threads of the host system
+# 1 - Use a single thread for compilation of Rust code (the default)
+# N - Number of threads used for compilation of Rust code
+#
+#rust.parallel-frontend-threads = 1
+
 # =============================================================================
 # Distribution options
 #

compiler/rustc/Cargo.toml

@@ -30,6 +30,7 @@ features = ['unprefixed_malloc_on_supported_platforms']
 check_only = ['rustc_driver_impl/check_only']
 jemalloc = ['dep:tikv-jemalloc-sys']
 llvm = ['rustc_driver_impl/llvm']
+llvm_enzyme = ['rustc_driver_impl/llvm_enzyme']
 max_level_info = ['rustc_driver_impl/max_level_info']
 rustc_randomized_layouts = ['rustc_driver_impl/rustc_randomized_layouts']
 # tidy-alphabetical-end

compiler/rustc_ast_passes/messages.ftl

@@ -64,8 +64,6 @@ ast_passes_body_in_extern = incorrect `{$kind}` inside `extern` block
 
 ast_passes_bound_in_context = bounds on `type`s in {$ctx} have no effect
 
-ast_passes_c_variadic_associated_function = associated functions cannot have a C variable argument list
-
 ast_passes_c_variadic_bad_extern = `...` is not supported for `extern "{$abi}"` functions
     .label = `extern "{$abi}"` because of this
     .help = only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

compiler/rustc_ast_passes/src/ast_validation.rs

@@ -696,7 +696,7 @@ impl<'a> AstValidator<'a> {
 
         match fn_ctxt {
             FnCtxt::Foreign => return,
-            FnCtxt::Free => match sig.header.ext {
+            FnCtxt::Free | FnCtxt::Assoc(_) => match sig.header.ext {
                 Extern::Implicit(_) => {
                     if !matches!(sig.header.safety, Safety::Unsafe(_)) {
                         self.dcx().emit_err(errors::CVariadicMustBeUnsafe {
@@ -726,11 +726,6 @@ impl<'a> AstValidator<'a> {
                     self.dcx().emit_err(err);
                 }
             },
-            FnCtxt::Assoc(_) => {
-                // For now, C variable argument lists are unsupported in associated functions.
-                let err = errors::CVariadicAssociatedFunction { span: variadic_param.span };
-                self.dcx().emit_err(err);
-            }
         }
     }
 

compiler/rustc_ast_passes/src/errors.rs

@@ -318,13 +318,6 @@ pub(crate) struct ExternItemAscii {
     pub block: Span,
 }
 
-#[derive(Diagnostic)]
-#[diag(ast_passes_c_variadic_associated_function)]
-pub(crate) struct CVariadicAssociatedFunction {
-    #[primary_span]
-    pub span: Span,
-}
-
 #[derive(Diagnostic)]
 #[diag(ast_passes_c_variadic_no_extern)]
 #[help]

compiler/rustc_attr_parsing/messages.ftl

@@ -122,6 +122,14 @@ attr_parsing_null_on_export = `export_name` may not contain null characters
 
 attr_parsing_null_on_link_section = `link_section` may not contain null characters
 
+attr_parsing_null_on_objc_class = `objc::class!` may not contain null characters
+
+attr_parsing_null_on_objc_selector = `objc::selector!` may not contain null characters
+
+attr_parsing_objc_class_expected_string_literal = `objc::class!` expected a string literal
+
+attr_parsing_objc_selector_expected_string_literal = `objc::selector!` expected a string literal
+
 attr_parsing_repr_ident =
     meta item in `repr` must be an identifier