Remove the need to manually call set_using_internal_features

compiler/rustc_driver_impl/src/lib.rs

@@ -28,8 +28,8 @@ use std::io::{self, IsTerminal, Read, Write};
 use std::panic::{self, PanicHookInfo, catch_unwind};
 use std::path::{Path, PathBuf};
 use std::process::{self, Command, Stdio};
+use std::sync::OnceLock;
 use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::{Arc, OnceLock};
 use std::time::{Instant, SystemTime};
 use std::{env, str};
 
@@ -214,18 +214,11 @@ pub struct RunCompiler<'a> {
     file_loader: Option<Box<dyn FileLoader + Send + Sync>>,
     make_codegen_backend:
         Option<Box<dyn FnOnce(&config::Options) -> Box<dyn CodegenBackend> + Send>>,
-    using_internal_features: Arc<std::sync::atomic::AtomicBool>,
 }
 
 impl<'a> RunCompiler<'a> {
     pub fn new(at_args: &'a [String], callbacks: &'a mut (dyn Callbacks + Send)) -> Self {
-        Self {
-            at_args,
-            callbacks,
-            file_loader: None,
-            make_codegen_backend: None,
-            using_internal_features: Arc::default(),
-        }
+        Self { at_args, callbacks, file_loader: None, make_codegen_backend: None }
     }
 
     /// Set a custom codegen backend.
@@ -257,23 +250,9 @@ impl<'a> RunCompiler<'a> {
         self
     }
 
-    /// Set the session-global flag that checks whether internal features have been used,
-    /// suppressing the message about submitting an issue in ICEs when enabled.
-    #[must_use]
-    pub fn set_using_internal_features(mut self, using_internal_features: Arc<AtomicBool>) -> Self {
-        self.using_internal_features = using_internal_features;
-        self
-    }
-
     /// Parse args and run the compiler.
     pub fn run(self) {
-        run_compiler(
-            self.at_args,
-            self.callbacks,
-            self.file_loader,
-            self.make_codegen_backend,
-            self.using_internal_features,
-        );
+        run_compiler(self.at_args, self.callbacks, self.file_loader, self.make_codegen_backend);
     }
 }
 
@@ -284,7 +263,6 @@ fn run_compiler(
     make_codegen_backend: Option<
         Box<dyn FnOnce(&config::Options) -> Box<dyn CodegenBackend> + Send>,
     >,
-    using_internal_features: Arc<std::sync::atomic::AtomicBool>,
 ) {
     let mut default_early_dcx = EarlyDiagCtxt::new(ErrorOutputType::default());
 
@@ -331,7 +309,7 @@ fn run_compiler(
         override_queries: None,
         make_codegen_backend,
         registry: diagnostics_registry(),
-        using_internal_features,
+        using_internal_features: &USING_INTERNAL_FEATURES,
         expanded_args: args,
     };
 
@@ -1350,6 +1328,8 @@ fn ice_path_with_config(config: Option<&UnstableOptions>) -> &'static Option<Pat
     })
 }
 
+pub static USING_INTERNAL_FEATURES: AtomicBool = AtomicBool::new(false);
+
 /// Installs a panic hook that will print the ICE message on unexpected panics.
 ///
 /// The hook is intended to be useable even by external tools. You can pass a custom
@@ -1360,15 +1340,8 @@ fn ice_path_with_config(config: Option<&UnstableOptions>) -> &'static Option<Pat
 /// If you have no extra info to report, pass the empty closure `|_| ()` as the argument to
 /// extra_info.
 ///
-/// Returns a flag that can be set to disable the note for submitting a bug. This can be passed to
-/// [`RunCompiler::set_using_internal_features`] to let macro expansion set it when encountering
-/// internal features.
-///
 /// A custom rustc driver can skip calling this to set up a custom ICE hook.
-pub fn install_ice_hook(
-    bug_report_url: &'static str,
-    extra_info: fn(&DiagCtxt),
-) -> Arc<AtomicBool> {
+pub fn install_ice_hook(bug_report_url: &'static str, extra_info: fn(&DiagCtxt)) {
     // If the user has not explicitly overridden "RUST_BACKTRACE", then produce
     // full backtraces. When a compiler ICE happens, we want to gather
     // as much information as possible to present in the issue opened
@@ -1385,8 +1358,6 @@ pub fn install_ice_hook(
         }
     }
 
-    let using_internal_features = Arc::new(std::sync::atomic::AtomicBool::default());
-    let using_internal_features_hook = Arc::clone(&using_internal_features);
     panic::update_hook(Box::new(
         move |default_hook: &(dyn Fn(&PanicHookInfo<'_>) + Send + Sync + 'static),
               info: &PanicHookInfo<'_>| {
@@ -1438,11 +1409,9 @@ pub fn install_ice_hook(
             }
 
             // Print the ICE message
-            report_ice(info, bug_report_url, extra_info, &using_internal_features_hook);
+            report_ice(info, bug_report_url, extra_info, &USING_INTERNAL_FEATURES);
         },
     ));
-
-    using_internal_features
 }
 
 /// Prints the ICE message, including query stack, but without backtrace.
@@ -1583,13 +1552,11 @@ pub fn main() -> ! {
     init_rustc_env_logger(&early_dcx);
     signal_handler::install();
     let mut callbacks = TimePassesCallbacks::default();
-    let using_internal_features = install_ice_hook(DEFAULT_BUG_REPORT_URL, |_| ());
+    install_ice_hook(DEFAULT_BUG_REPORT_URL, |_| ());
     install_ctrlc_handler();
 
     let exit_code = catch_with_exit_code(|| {
-        RunCompiler::new(&args::raw_args(&early_dcx)?, &mut callbacks)
-            .set_using_internal_features(using_internal_features)
-            .run();
+        RunCompiler::new(&args::raw_args(&early_dcx)?, &mut callbacks).run();
         Ok(())
     });
 

compiler/rustc_interface/src/interface.rs

@@ -1,6 +1,5 @@
 use std::path::PathBuf;
 use std::result;
-use std::sync::Arc;
 
 use rustc_ast::{LitKind, MetaItemKind, token};
 use rustc_codegen_ssa::traits::CodegenBackend;
@@ -347,7 +346,7 @@ pub struct Config {
     /// enabled. Makes it so that "please report a bug" is hidden, as ICEs with
     /// internal features are wontfix, and they are usually the cause of the ICEs.
     /// None signifies that this is not tracked.
-    pub using_internal_features: Arc<std::sync::atomic::AtomicBool>,
+    pub using_internal_features: &'static std::sync::atomic::AtomicBool,
 
     /// All commandline args used to invoke the compiler, with @file args fully expanded.
     /// This will only be used within debug info, e.g. in the pdb file on windows

compiler/rustc_interface/src/tests.rs

@@ -2,7 +2,7 @@
 use std::collections::{BTreeMap, BTreeSet};
 use std::num::NonZero;
 use std::path::{Path, PathBuf};
-use std::sync::Arc;
+use std::sync::atomic::AtomicBool;
 
 use rustc_data_structures::profiling::TimePassesFormat;
 use rustc_errors::emitter::HumanReadableErrorType;
@@ -62,6 +62,8 @@ where
             temps_dir,
         };
 
+        static USING_INTERNAL_FEATURES: AtomicBool = AtomicBool::new(false);
+
         let sess = build_session(
             early_dcx,
             sessopts,
@@ -74,7 +76,7 @@ where
             sysroot,
             "",
             None,
-            Arc::default(),
+            &USING_INTERNAL_FEATURES,
             Default::default(),
         );
         let cfg = parse_cfg(sess.dcx(), matches.opt_strs("cfg"));

compiler/rustc_session/src/session.rs

@@ -189,7 +189,7 @@ pub struct Session {
     /// enabled. Makes it so that "please report a bug" is hidden, as ICEs with
     /// internal features are wontfix, and they are usually the cause of the ICEs.
     /// None signifies that this is not tracked.
-    pub using_internal_features: Arc<AtomicBool>,
+    pub using_internal_features: &'static AtomicBool,
 
     /// All commandline args used to invoke the compiler, with @file args fully expanded.
     /// This will only be used within debug info, e.g. in the pdb file on windows
@@ -966,7 +966,7 @@ pub fn build_session(
     sysroot: PathBuf,
     cfg_version: &'static str,
     ice_file: Option<PathBuf>,
-    using_internal_features: Arc<AtomicBool>,
+    using_internal_features: &'static AtomicBool,
     expanded_args: Vec<String>,
 ) -> Session {
     // FIXME: This is not general enough to make the warning lint completely override

src/librustdoc/core.rs

@@ -1,10 +1,10 @@
-use std::sync::atomic::AtomicBool;
-use std::sync::{Arc, LazyLock};
+use std::sync::LazyLock;
 use std::{io, mem};
 
 use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexMap};
 use rustc_data_structures::sync::Lrc;
 use rustc_data_structures::unord::UnordSet;
+use rustc_driver::USING_INTERNAL_FEATURES;
 use rustc_errors::TerminalUrl;
 use rustc_errors::codes::*;
 use rustc_errors::emitter::{
@@ -221,7 +221,6 @@ pub(crate) fn create_config(
         ..
     }: RustdocOptions,
     RenderOptions { document_private, .. }: &RenderOptions,
-    using_internal_features: Arc<AtomicBool>,
 ) -> rustc_interface::Config {
     // Add the doc cfg into the doc build.
     cfgs.push("doc".to_string());
@@ -316,7 +315,7 @@ pub(crate) fn create_config(
         make_codegen_backend: None,
         registry: rustc_driver::diagnostics_registry(),
         ice_file: None,
-        using_internal_features,
+        using_internal_features: &USING_INTERNAL_FEATURES,
         expanded_args,
     }
 }

src/librustdoc/doctest.rs

@@ -193,7 +193,7 @@ pub(crate) fn run(dcx: DiagCtxtHandle<'_>, input: Input, options: RustdocOptions
         make_codegen_backend: None,
         registry: rustc_driver::diagnostics_registry(),
         ice_file: None,
-        using_internal_features: Arc::default(),
+        using_internal_features: &rustc_driver::USING_INTERNAL_FEATURES,
         expanded_args: options.expanded_args.clone(),
     };
 

src/librustdoc/lib.rs

@@ -73,8 +73,6 @@ extern crate tikv_jemalloc_sys as jemalloc_sys;
 use std::env::{self, VarError};
 use std::io::{self, IsTerminal};
 use std::process;
-use std::sync::Arc;
-use std::sync::atomic::AtomicBool;
 
 use rustc_errors::DiagCtxtHandle;
 use rustc_interface::interface;
@@ -158,7 +156,7 @@ pub fn main() {
 
     let mut early_dcx = EarlyDiagCtxt::new(ErrorOutputType::default());
 
-    let using_internal_features = rustc_driver::install_ice_hook(
+    rustc_driver::install_ice_hook(
         "https://github.com/rust-lang/rust/issues/new\
     ?labels=C-bug%2C+I-ICE%2C+T-rustdoc&template=ice.md",
         |_| (),
@@ -179,7 +177,7 @@ pub fn main() {
 
     let exit_code = rustc_driver::catch_with_exit_code(|| {
         let at_args = rustc_driver::args::raw_args(&early_dcx)?;
-        main_args(&mut early_dcx, &at_args, using_internal_features);
+        main_args(&mut early_dcx, &at_args);
         Ok(())
     });
     process::exit(exit_code);
@@ -768,11 +766,7 @@ fn run_merge_finalize(opt: config::RenderOptions) -> Result<(), error::Error> {
     Ok(())
 }
 
-fn main_args(
-    early_dcx: &mut EarlyDiagCtxt,
-    at_args: &[String],
-    using_internal_features: Arc<AtomicBool>,
-) {
+fn main_args(early_dcx: &mut EarlyDiagCtxt, at_args: &[String]) {
     // Throw away the first argument, the name of the binary.
     // In case of at_args being empty, as might be the case by
     // passing empty argument array to execve under some platforms,
@@ -825,8 +819,7 @@ fn main_args(
         (false, Some(md_input)) => {
             let md_input = md_input.to_owned();
             let edition = options.edition;
-            let config =
-                core::create_config(input, options, &render_options, using_internal_features);
+            let config = core::create_config(input, options, &render_options);
 
             // `markdown::render` can invoke `doctest::make_test`, which
             // requires session globals and a thread pool, so we use
@@ -859,7 +852,7 @@ fn main_args(
     let scrape_examples_options = options.scrape_examples_options.clone();
     let bin_crate = options.bin_crate;
 
-    let config = core::create_config(input, options, &render_options, using_internal_features);
+    let config = core::create_config(input, options, &render_options);
 
     let registered_lints = config.register_lints.is_some();
 

src/tools/clippy/src/driver.rs

@@ -186,7 +186,7 @@ pub fn main() {
 
     rustc_driver::init_rustc_env_logger(&early_dcx);
 
-    let using_internal_features = rustc_driver::install_ice_hook(BUG_REPORT_URL, |dcx| {
+    rustc_driver::install_ice_hook(BUG_REPORT_URL, |dcx| {
         // FIXME: this macro calls unwrap internally but is called in a panicking context!  It's not
         // as simple as moving the call from the hook to main, because `install_ice_hook` doesn't
         // accept a generic closure.
@@ -295,13 +295,9 @@ pub fn main() {
         let clippy_enabled = !cap_lints_allow && relevant_package && !info_query;
         if clippy_enabled {
             args.extend(clippy_args);
-            rustc_driver::RunCompiler::new(&args, &mut ClippyCallbacks { clippy_args_var })
-                .set_using_internal_features(using_internal_features)
-                .run();
+            rustc_driver::RunCompiler::new(&args, &mut ClippyCallbacks { clippy_args_var }).run();
         } else {
-            rustc_driver::RunCompiler::new(&args, &mut RustcCallbacks { clippy_args_var })
-                .set_using_internal_features(using_internal_features)
-                .run();
+            rustc_driver::RunCompiler::new(&args, &mut RustcCallbacks { clippy_args_var }).run();
         }
         Ok(())
     }))

src/tools/miri/src/bin/miri.rs

@@ -30,7 +30,7 @@ use std::ops::Range;
 use std::path::PathBuf;
 use std::str::FromStr;
 use std::sync::atomic::{AtomicI32, Ordering};
-use std::sync::{Arc, Once};
+use std::sync::Once;
 
 use miri::{
     BacktraceStyle, BorrowTrackerMethod, MiriConfig, MiriEntryFnType,ProvenanceMode, RetagFields, ValidationMode,
@@ -370,13 +370,10 @@ fn init_late_loggers(early_dcx: &EarlyDiagCtxt, tcx: TyCtxt<'_>) {
 fn run_compiler_and_exit(
     args: &[String],
     callbacks: &mut (dyn rustc_driver::Callbacks + Send),
-    using_internal_features: Arc<std::sync::atomic::AtomicBool>,
 ) -> ! {
     // Invoke compiler, and handle return code.
     let exit_code = rustc_driver::catch_with_exit_code(move || {
-        rustc_driver::RunCompiler::new(args, callbacks)
-            .set_using_internal_features(using_internal_features)
-            .run();
+        rustc_driver::RunCompiler::new(args, callbacks).run();
         Ok(())
     });
     std::process::exit(exit_code)
@@ -467,7 +464,6 @@ fn main() {
     // If the environment asks us to actually be rustc, then do that.
     if let Some(crate_kind) = env::var_os("MIRI_BE_RUSTC") {
         // Earliest rustc setup.
-        let using_internal_features =
         rustc_driver::install_ice_hook(rustc_driver::DEFAULT_BUG_REPORT_URL, |_| ());
         rustc_driver::init_rustc_env_logger(&early_dcx);
 
@@ -492,15 +488,10 @@ fn main() {
         }
 
         // We cannot use `rustc_driver::main` as we want it to use `args` as the CLI arguments.
-        run_compiler_and_exit(
-            &args,
-            &mut MiriBeRustCompilerCalls { target_crate },
-            using_internal_features,
-        )
+        run_compiler_and_exit(&args, &mut MiriBeRustCompilerCalls { target_crate })
     }
 
     // Add an ICE bug report hook.
-    let using_internal_features =
     rustc_driver::install_ice_hook("https://github.com/rust-lang/miri/issues/new", |_| ());
 
     // Init loggers the Miri way.
@@ -735,9 +726,5 @@ fn main() {
 
     debug!("rustc arguments: {:?}", rustc_args);
     debug!("crate arguments: {:?}", miri_config.args);
-    run_compiler_and_exit(
-        &rustc_args,
-        &mut MiriCompilerCalls::new(miri_config, many_seeds),
-        using_internal_features,
-    )
+    run_compiler_and_exit(&rustc_args, &mut MiriCompilerCalls::new(miri_config, many_seeds))
 }

tests/ui-fulldeps/run-compiler-twice.rs

@@ -72,7 +72,7 @@ fn compile(code: String, output: PathBuf, sysroot: PathBuf, linker: Option<&Path
         override_queries: None,
         make_codegen_backend: None,
         registry: rustc_driver::diagnostics_registry(),
-        using_internal_features: std::sync::Arc::default(),
+        using_internal_features: &rustc_driver::USING_INTERNAL_FEATURES,
         expanded_args: Default::default(),
     };