Fix fuzz warnings and deny warnings by default in build system

.github/workflows/ci.yml

@@ -82,9 +82,20 @@ jobs:
         #path: rust
         #key: ${{ runner.os }}-packages-${{ hashFiles('rust/.git/HEAD') }}
 
+    - name: Prepare
+      run: ./y.sh prepare --only-libcore
+
+    - name: Check formatting
+      run: ./y.sh fmt --check
+
+    - name: clippy
+      run: |
+        cargo clippy --all-targets -- -D warnings
+        cargo clippy --all-targets --no-default-features -- -D warnings
+        cargo clippy --manifest-path build_system/Cargo.toml --all-targets -- -D warnings
+
     - name: Build
       run: |
-        ./y.sh prepare --only-libcore
         ./y.sh build --sysroot
         ./y.sh test --cargo-tests
 
@@ -106,14 +117,6 @@ jobs:
       run: |
         ./y.sh test --release --clean --build-sysroot ${{ matrix.commands }}
 
-    - name: Check formatting
-      run: ./y.sh fmt --check
-
-    - name: clippy
-      run: |
-        cargo clippy --all-targets -- -D warnings
-        cargo clippy --all-targets --features master -- -D warnings
-
   duplicates:
     runs-on: ubuntu-24.04
     steps:

Cargo.lock

@@ -81,6 +81,18 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26145e563e54f2cadc477553f1ec5ee650b00862f0a58bcd12cbdc5f0ea2d2f4"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "r-efi",
+ "wasi",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.3.1"
@@ -111,9 +123,9 @@ checksum = "5aaeb2981e0606ca11d79718f8bb01164f1d6ed75080182d3abf017e6d244b6d"
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.4.14"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
+checksum = "cd945864f07fe9f5371a27ad7b52a172b4b499999f1d97574c9fa68373937e12"
 
 [[package]]
 name = "memchr"
@@ -137,6 +149,12 @@ version = "1.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1261fe7e33c73b354eab43b1273a57c8f967d0391e80353e51f764ac02cf6775"
 
+[[package]]
+name = "r-efi"
+version = "5.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74765f6d916ee2faa39bc8e68e4f3ed8949b48cccdac59983d287a7cb71ce9c5"
+
 [[package]]
 name = "regex"
 version = "1.8.4"
@@ -166,9 +184,9 @@ dependencies = [
 
 [[package]]
 name = "rustix"
-version = "0.38.42"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f93dc38ecbab2eb790ff964bb77fa94faf256fd3e73285fd7ba0903b76bedb85"
+checksum = "c71e83d6afe7ff64890ec6b71d6a69bb8a610ab78ce364b3352876bb4c801266"
 dependencies = [
  "bitflags",
  "errno",
@@ -188,12 +206,12 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.14.0"
+version = "3.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28cce251fcbc87fac86a866eeb0d6c2d536fc16d06f184bb61aeae11aa4cee0c"
+checksum = "e8a64e3985349f2441a1a9ef0b853f869006c3855f2cda6862a94d26ebb9d6a1"
 dependencies = [
- "cfg-if",
  "fastrand",
+ "getrandom",
  "once_cell",
  "rustix",
  "windows-sys",
@@ -242,6 +260,15 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "wasi"
+version = "0.14.2+wasi-0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9683f9a5a998d873c0d21fcbe3c083009670149a8fab228644b8bd36b2c48cb3"
+dependencies = [
+ "wit-bindgen-rt",
+]
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -345,3 +372,12 @@ name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
+dependencies = [
+ "bitflags",
+]

Cargo.toml

@@ -31,7 +31,7 @@ gccjit = "2.7"
 [dev-dependencies]
 boml = "0.3.1"
 lang_tester = "0.8.0"
-tempfile = "3.7.1"
+tempfile = "3.20"
 
 [profile.dev]
 # By compiling dependencies with optimizations, performing tests gets much faster.

build_system/src/build.rs

@@ -33,7 +33,7 @@ impl BuildArg {
                 }
                 arg => {
                     if !build_arg.config_info.parse_argument(arg, &mut args)? {
-                        return Err(format!("Unknown argument `{}`", arg));
+                        return Err(format!("Unknown argument `{arg}`"));
                     }
                 }
             }
@@ -105,14 +105,14 @@ pub fn create_build_sysroot_content(start_dir: &Path) -> Result<(), String> {
     if !start_dir.is_dir() {
         create_dir(start_dir)?;
     }
-    copy_file("build_system/build_sysroot/Cargo.toml", &start_dir.join("Cargo.toml"))?;
-    copy_file("build_system/build_sysroot/Cargo.lock", &start_dir.join("Cargo.lock"))?;
+    copy_file("build_system/build_sysroot/Cargo.toml", start_dir.join("Cargo.toml"))?;
+    copy_file("build_system/build_sysroot/Cargo.lock", start_dir.join("Cargo.lock"))?;
 
     let src_dir = start_dir.join("src");
     if !src_dir.is_dir() {
         create_dir(&src_dir)?;
     }
-    copy_file("build_system/build_sysroot/lib.rs", &start_dir.join("src/lib.rs"))
+    copy_file("build_system/build_sysroot/lib.rs", start_dir.join("src/lib.rs"))
 }
 
 pub fn build_sysroot(env: &HashMap<String, String>, config: &ConfigInfo) -> Result<(), String> {
@@ -169,7 +169,7 @@ pub fn build_sysroot(env: &HashMap<String, String>, config: &ConfigInfo) -> Resu
         run_command(&[&"cp", &"-r", &dir_to_copy, &sysroot_path], None).map(|_| ())
     };
     walk_dir(
-        start_dir.join(&format!("target/{}/{}/deps", config.target_triple, channel)),
+        start_dir.join(format!("target/{}/{}/deps", config.target_triple, channel)),
         &mut copier.clone(),
         &mut copier,
         false,

build_system/src/clean.rs

@@ -17,12 +17,12 @@ enum CleanArg {
 impl CleanArg {
     fn new() -> Result<Self, String> {
         // We skip the binary and the "clean" option.
-        for arg in std::env::args().skip(2) {
+        if let Some(arg) = std::env::args().nth(2) {
             return match arg.as_str() {
                 "all" => Ok(Self::All),
                 "ui-tests" => Ok(Self::UiTests),
                 "--help" => Ok(Self::Help),
-                a => Err(format!("Unknown argument `{}`", a)),
+                a => Err(format!("Unknown argument `{a}`")),
             };
         }
         Ok(Self::default())

build_system/src/clone_gcc.rs

@@ -43,7 +43,7 @@ impl Args {
                 }
                 arg => {
                     if !command_args.config_info.parse_argument(arg, &mut args)? {
-                        return Err(format!("Unknown option {}", arg));
+                        return Err(format!("Unknown option {arg}"));
                     }
                 }
             }
@@ -52,7 +52,7 @@ impl Args {
             Some(p) => p.into(),
             None => PathBuf::from("./gcc"),
         };
-        return Ok(Some(command_args));
+        Ok(Some(command_args))
     }
 }
 
@@ -64,7 +64,7 @@ pub fn run() -> Result<(), String> {
     let result = git_clone("https://github.com/rust-lang/gcc", Some(&args.out_path), false)?;
     if result.ran_clone {
         let gcc_commit = args.config_info.get_gcc_commit()?;
-        println!("Checking out GCC commit `{}`...", gcc_commit);
+        println!("Checking out GCC commit `{gcc_commit}`...");
         run_command_with_output(
             &[&"git", &"checkout", &gcc_commit],
             Some(Path::new(&result.repo_dir)),