Merging upstream version 1.69.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3 insertions, 1357 deletions

diff --git a/compiler/rustc_driver/src/lib.rs b/compiler/rustc_driver/src/lib.rs
index f50ad0137..4eabba575 100644
--- a/compiler/rustc_driver/src/lib.rs
+++ b/compiler/rustc_driver/src/lib.rs
@@ -1,1358 +1,4 @@
-//! The Rust compiler.
-//!
-//! # Note
-//!
-//! This API is completely unstable and subject to change.
+// This crate is intentionally empty and a rexport of `rustc_driver_impl` to allow the code in
+// `rustc_driver_impl` to be compiled in parallel with other crates.
 
-#![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![feature(is_terminal)]
-#![feature(once_cell)]
-#![feature(decl_macro)]
-#![recursion_limit = "256"]
-#![allow(rustc::potential_query_instability)]
-#![deny(rustc::untranslatable_diagnostic)]
-#![deny(rustc::diagnostic_outside_of_impl)]
-
-#[macro_use]
-extern crate tracing;
-
-pub extern crate rustc_plugin_impl as plugin;
-
-use rustc_ast as ast;
-use rustc_codegen_ssa::{traits::CodegenBackend, CodegenErrors, CodegenResults};
-use rustc_data_structures::profiling::{get_resident_set_size, print_time_passes_entry};
-use rustc_data_structures::sync::SeqCst;
-use rustc_errors::registry::{InvalidErrorCode, Registry};
-use rustc_errors::{ErrorGuaranteed, PResult};
-use rustc_feature::find_gated_cfg;
-use rustc_hir::def_id::LOCAL_CRATE;
-use rustc_interface::util::{self, collect_crate_types, get_codegen_backend};
-use rustc_interface::{interface, Queries};
-use rustc_lint::LintStore;
-use rustc_metadata::locator;
-use rustc_save_analysis as save;
-use rustc_save_analysis::DumpHandler;
-use rustc_session::config::{nightly_options, CG_OPTIONS, Z_OPTIONS};
-use rustc_session::config::{ErrorOutputType, Input, OutputType, PrintRequest, TrimmedDefPaths};
-use rustc_session::cstore::MetadataLoader;
-use rustc_session::getopts;
-use rustc_session::lint::{Lint, LintId};
-use rustc_session::{config, Session};
-use rustc_session::{early_error, early_error_no_abort, early_warn};
-use rustc_span::source_map::{FileLoader, FileName};
-use rustc_span::symbol::sym;
-use rustc_target::json::ToJson;
-
-use std::borrow::Cow;
-use std::cmp::max;
-use std::env;
-use std::ffi::OsString;
-use std::fs;
-use std::io::{self, IsTerminal, Read, Write};
-use std::panic::{self, catch_unwind};
-use std::path::PathBuf;
-use std::process::{self, Command, Stdio};
-use std::str;
-use std::sync::LazyLock;
-use std::time::Instant;
-
-pub mod args;
-pub mod pretty;
-mod session_diagnostics;
-
-use crate::session_diagnostics::{
-    RLinkEmptyVersionNumber, RLinkEncodingVersionMismatch, RLinkRustcVersionMismatch,
-    RLinkWrongFileType, RlinkNotAFile, RlinkUnableToRead,
-};
-
-/// Exit status code used for successful compilation and help output.
-pub const EXIT_SUCCESS: i32 = 0;
-
-/// Exit status code used for compilation failures and invalid flags.
-pub const EXIT_FAILURE: i32 = 1;
-
-const BUG_REPORT_URL: &str = "https://github.com/rust-lang/rust/issues/new\
-    ?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md";
-
-const ICE_REPORT_COMPILER_FLAGS: &[&str] = &["-Z", "-C", "--crate-type"];
-
-const ICE_REPORT_COMPILER_FLAGS_EXCLUDE: &[&str] = &["metadata", "extra-filename"];
-
-const ICE_REPORT_COMPILER_FLAGS_STRIP_VALUE: &[&str] = &["incremental"];
-
-pub fn abort_on_err<T>(result: Result<T, ErrorGuaranteed>, sess: &Session) -> T {
-    match result {
-        Err(..) => {
-            sess.abort_if_errors();
-            panic!("error reported but abort_if_errors didn't abort???");
-        }
-        Ok(x) => x,
-    }
-}
-
-pub trait Callbacks {
-    /// Called before creating the compiler instance
-    fn config(&mut self, _config: &mut interface::Config) {}
-    /// Called after parsing. Return value instructs the compiler whether to
-    /// continue the compilation afterwards (defaults to `Compilation::Continue`)
-    fn after_parsing<'tcx>(
-        &mut self,
-        _compiler: &interface::Compiler,
-        _queries: &'tcx Queries<'tcx>,
-    ) -> Compilation {
-        Compilation::Continue
-    }
-    /// Called after expansion. Return value instructs the compiler whether to
-    /// continue the compilation afterwards (defaults to `Compilation::Continue`)
-    fn after_expansion<'tcx>(
-        &mut self,
-        _compiler: &interface::Compiler,
-        _queries: &'tcx Queries<'tcx>,
-    ) -> Compilation {
-        Compilation::Continue
-    }
-    /// Called after analysis. Return value instructs the compiler whether to
-    /// continue the compilation afterwards (defaults to `Compilation::Continue`)
-    fn after_analysis<'tcx>(
-        &mut self,
-        _compiler: &interface::Compiler,
-        _queries: &'tcx Queries<'tcx>,
-    ) -> Compilation {
-        Compilation::Continue
-    }
-}
-
-#[derive(Default)]
-pub struct TimePassesCallbacks {
-    time_passes: bool,
-}
-
-impl Callbacks for TimePassesCallbacks {
-    // JUSTIFICATION: the session doesn't exist at this point.
-    #[allow(rustc::bad_opt_access)]
-    fn config(&mut self, config: &mut interface::Config) {
-        // If a --print=... option has been given, we don't print the "total"
-        // time because it will mess up the --print output. See #64339.
-        //
-        self.time_passes = config.opts.prints.is_empty() && config.opts.unstable_opts.time_passes;
-        config.opts.trimmed_def_paths = TrimmedDefPaths::GoodPath;
-    }
-}
-
-pub fn diagnostics_registry() -> Registry {
-    Registry::new(rustc_error_codes::DIAGNOSTICS)
-}
-
-/// This is the primary entry point for rustc.
-pub struct RunCompiler<'a, 'b> {
-    at_args: &'a [String],
-    callbacks: &'b mut (dyn Callbacks + Send),
-    file_loader: Option<Box<dyn FileLoader + Send + Sync>>,
-    make_codegen_backend:
-        Option<Box<dyn FnOnce(&config::Options) -> Box<dyn CodegenBackend> + Send>>,
-}
-
-impl<'a, 'b> RunCompiler<'a, 'b> {
-    pub fn new(at_args: &'a [String], callbacks: &'b mut (dyn Callbacks + Send)) -> Self {
-        Self { at_args, callbacks, file_loader: None, make_codegen_backend: None }
-    }
-
-    /// Set a custom codegen backend.
-    ///
-    /// Has no uses within this repository, but is used by bjorn3 for "the
-    /// hotswapping branch of cg_clif" for "setting the codegen backend from a
-    /// custom driver where the custom codegen backend has arbitrary data."
-    /// (See #102759.)
-    pub fn set_make_codegen_backend(
-        &mut self,
-        make_codegen_backend: Option<
-            Box<dyn FnOnce(&config::Options) -> Box<dyn CodegenBackend> + Send>,
-        >,
-    ) -> &mut Self {
-        self.make_codegen_backend = make_codegen_backend;
-        self
-    }
-
-    /// Load files from sources other than the file system.
-    ///
-    /// Has no uses within this repository, but may be used in the future by
-    /// bjorn3 for "hooking rust-analyzer's VFS into rustc at some point for
-    /// running rustc without having to save". (See #102759.)
-    pub fn set_file_loader(
-        &mut self,
-        file_loader: Option<Box<dyn FileLoader + Send + Sync>>,
-    ) -> &mut Self {
-        self.file_loader = file_loader;
-        self
-    }
-
-    /// Parse args and run the compiler.
-    pub fn run(self) -> interface::Result<()> {
-        run_compiler(self.at_args, self.callbacks, self.file_loader, self.make_codegen_backend)
-    }
-}
-
-fn run_compiler(
-    at_args: &[String],
-    callbacks: &mut (dyn Callbacks + Send),
-    file_loader: Option<Box<dyn FileLoader + Send + Sync>>,
-    make_codegen_backend: Option<
-        Box<dyn FnOnce(&config::Options) -> Box<dyn CodegenBackend> + Send>,
-    >,
-) -> interface::Result<()> {
-    let args = args::arg_expand_all(at_args);
-
-    let Some(matches) = handle_options(&args) else { return Ok(()) };
-
-    let sopts = config::build_session_options(&matches);
-
-    if let Some(ref code) = matches.opt_str("explain") {
-        handle_explain(diagnostics_registry(), code, sopts.error_format);
-        return Ok(());
-    }
-
-    let cfg = interface::parse_cfgspecs(matches.opt_strs("cfg"));
-    let check_cfg = interface::parse_check_cfg(matches.opt_strs("check-cfg"));
-    let (odir, ofile) = make_output(&matches);
-    let mut config = interface::Config {
-        opts: sopts,
-        crate_cfg: cfg,
-        crate_check_cfg: check_cfg,
-        input: Input::File(PathBuf::new()),
-        output_file: ofile,
-        output_dir: odir,
-        file_loader,
-        lint_caps: Default::default(),
-        parse_sess_created: None,
-        register_lints: None,
-        override_queries: None,
-        make_codegen_backend,
-        registry: diagnostics_registry(),
-    };
-
-    if !tracing::dispatcher::has_been_set() {
-        init_rustc_env_logger_with_backtrace_option(&config.opts.unstable_opts.log_backtrace);
-    }
-
-    match make_input(config.opts.error_format, &matches.free) {
-        Err(reported) => return Err(reported),
-        Ok(Some(input)) => {
-            config.input = input;
-
-            callbacks.config(&mut config);
-        }
-        Ok(None) => match matches.free.len() {
-            0 => {
-                callbacks.config(&mut config);
-                interface::run_compiler(config, |compiler| {
-                    let sopts = &compiler.session().opts;
-                    if sopts.describe_lints {
-                        let mut lint_store =
-                            rustc_lint::new_lint_store(compiler.session().enable_internal_lints());
-                        let registered_lints =
-                            if let Some(register_lints) = compiler.register_lints() {
-                                register_lints(compiler.session(), &mut lint_store);
-                                true
-                            } else {
-                                false
-                            };
-                        describe_lints(compiler.session(), &lint_store, registered_lints);
-                        return;
-                    }
-                    let should_stop =
-                        print_crate_info(&***compiler.codegen_backend(), compiler.session(), false);
-
-                    if should_stop == Compilation::Stop {
-                        return;
-                    }
-                    early_error(sopts.error_format, "no input filename given")
-                });
-                return Ok(());
-            }
-            1 => panic!("make_input should have provided valid inputs"),
-            _ => early_error(
-                config.opts.error_format,
-                &format!(
-                    "multiple input filenames provided (first two filenames are `{}` and `{}`)",
-                    matches.free[0], matches.free[1],
-                ),
-            ),
-        },
-    };
-
-    interface::run_compiler(config, |compiler| {
-        let sess = compiler.session();
-        let should_stop = print_crate_info(&***compiler.codegen_backend(), sess, true)
-            .and_then(|| list_metadata(sess, &*compiler.codegen_backend().metadata_loader()))
-            .and_then(|| try_process_rlink(sess, compiler));
-
-        if should_stop == Compilation::Stop {
-            return sess.compile_status();
-        }
-
-        let linker = compiler.enter(|queries| {
-            let early_exit = || sess.compile_status().map(|_| None);
-            queries.parse()?;
-
-            if let Some(ppm) = &sess.opts.pretty {
-                if ppm.needs_ast_map() {
-                    let expanded_crate = queries.expansion()?.borrow().0.clone();
-                    queries.global_ctxt()?.enter(|tcx| {
-                        pretty::print_after_hir_lowering(tcx, &*expanded_crate, *ppm);
-                        Ok(())
-                    })?;
-                } else {
-                    let krate = queries.parse()?.steal();
-                    pretty::print_after_parsing(sess, &krate, *ppm);
-                }
-                trace!("finished pretty-printing");
-                return early_exit();
-            }
-
-            if callbacks.after_parsing(compiler, queries) == Compilation::Stop {
-                return early_exit();
-            }
-
-            if sess.opts.unstable_opts.parse_only || sess.opts.unstable_opts.show_span.is_some() {
-                return early_exit();
-            }
-
-            {
-                let plugins = queries.register_plugins()?;
-                let (_, lint_store) = &*plugins.borrow();
-
-                // Lint plugins are registered; now we can process command line flags.
-                if sess.opts.describe_lints {
-                    describe_lints(sess, lint_store, true);
-                    return early_exit();
-                }
-            }
-
-            queries.global_ctxt()?;
-            if callbacks.after_expansion(compiler, queries) == Compilation::Stop {
-                return early_exit();
-            }
-
-            if sess.opts.output_types.contains_key(&OutputType::DepInfo)
-                && sess.opts.output_types.len() == 1
-            {
-                return early_exit();
-            }
-
-            if sess.opts.unstable_opts.no_analysis {
-                return early_exit();
-            }
-
-            queries.global_ctxt()?.enter(|tcx| {
-                let result = tcx.analysis(());
-                if sess.opts.unstable_opts.save_analysis {
-                    let crate_name = tcx.crate_name(LOCAL_CRATE);
-                    sess.time("save_analysis", || {
-                        save::process_crate(
-                            tcx,
-                            crate_name,
-                            &sess.io.input,
-                            None,
-                            DumpHandler::new(sess.io.output_dir.as_deref(), crate_name),
-                        )
-                    });
-                }
-                result
-            })?;
-
-            if callbacks.after_analysis(compiler, queries) == Compilation::Stop {
-                return early_exit();
-            }
-
-            queries.ongoing_codegen()?;
-
-            if sess.opts.unstable_opts.print_type_sizes {
-                sess.code_stats.print_type_sizes();
-            }
-
-            let linker = queries.linker()?;
-            Ok(Some(linker))
-        })?;
-
-        if let Some(linker) = linker {
-            let _timer = sess.timer("link");
-            linker.link()?
-        }
-
-        if sess.opts.unstable_opts.perf_stats {
-            sess.print_perf_stats();
-        }
-
-        if sess.opts.unstable_opts.print_fuel.is_some() {
-            eprintln!(
-                "Fuel used by {}: {}",
-                sess.opts.unstable_opts.print_fuel.as_ref().unwrap(),
-                sess.print_fuel.load(SeqCst)
-            );
-        }
-
-        Ok(())
-    })
-}
-
-// Extract output directory and file from matches.
-fn make_output(matches: &getopts::Matches) -> (Option<PathBuf>, Option<PathBuf>) {
-    let odir = matches.opt_str("out-dir").map(|o| PathBuf::from(&o));
-    let ofile = matches.opt_str("o").map(|o| PathBuf::from(&o));
-    (odir, ofile)
-}
-
-// Extract input (string or file and optional path) from matches.
-fn make_input(
-    error_format: ErrorOutputType,
-    free_matches: &[String],
-) -> Result<Option<Input>, ErrorGuaranteed> {
-    if free_matches.len() == 1 {
-        let ifile = &free_matches[0];
-        if ifile == "-" {
-            let mut src = String::new();
-            if io::stdin().read_to_string(&mut src).is_err() {
-                // Immediately stop compilation if there was an issue reading
-                // the input (for example if the input stream is not UTF-8).
-                let reported = early_error_no_abort(
-                    error_format,
-                    "couldn't read from stdin, as it did not contain valid UTF-8",
-                );
-                return Err(reported);
-            }
-            if let Ok(path) = env::var("UNSTABLE_RUSTDOC_TEST_PATH") {
-                let line = env::var("UNSTABLE_RUSTDOC_TEST_LINE").expect(
-                    "when UNSTABLE_RUSTDOC_TEST_PATH is set \
-                                    UNSTABLE_RUSTDOC_TEST_LINE also needs to be set",
-                );
-                let line = isize::from_str_radix(&line, 10)
-                    .expect("UNSTABLE_RUSTDOC_TEST_LINE needs to be an number");
-                let file_name = FileName::doc_test_source_code(PathBuf::from(path), line);
-                Ok(Some(Input::Str { name: file_name, input: src }))
-            } else {
-                Ok(Some(Input::Str { name: FileName::anon_source_code(&src), input: src }))
-            }
-        } else {
-            Ok(Some(Input::File(PathBuf::from(ifile))))
-        }
-    } else {
-        Ok(None)
-    }
-}
-
-/// Whether to stop or continue compilation.
-#[derive(Copy, Clone, Debug, Eq, PartialEq)]
-pub enum Compilation {
-    Stop,
-    Continue,
-}
-
-impl Compilation {
-    pub fn and_then<F: FnOnce() -> Compilation>(self, next: F) -> Compilation {
-        match self {
-            Compilation::Stop => Compilation::Stop,
-            Compilation::Continue => next(),
-        }
-    }
-}
-
-fn handle_explain(registry: Registry, code: &str, output: ErrorOutputType) {
-    let upper_cased_code = code.to_ascii_uppercase();
-    let normalised =
-        if upper_cased_code.starts_with('E') { upper_cased_code } else { format!("E{code:0>4}") };
-    match registry.try_find_description(&normalised) {
-        Ok(Some(description)) => {
-            let mut is_in_code_block = false;
-            let mut text = String::new();
-            // Slice off the leading newline and print.
-            for line in description.lines() {
-                let indent_level =
-                    line.find(|c: char| !c.is_whitespace()).unwrap_or_else(|| line.len());
-                let dedented_line = &line[indent_level..];
-                if dedented_line.starts_with("```") {
-                    is_in_code_block = !is_in_code_block;
-                    text.push_str(&line[..(indent_level + 3)]);
-                } else if is_in_code_block && dedented_line.starts_with("# ") {
-                    continue;
-                } else {
-                    text.push_str(line);
-                }
-                text.push('\n');
-            }
-            if io::stdout().is_terminal() {
-                show_content_with_pager(&text);
-            } else {
-                print!("{text}");
-            }
-        }
-        Ok(None) => {
-            early_error(output, &format!("no extended information for {code}"));
-        }
-        Err(InvalidErrorCode) => {
-            early_error(output, &format!("{code} is not a valid error code"));
-        }
-    }
-}
-
-fn show_content_with_pager(content: &str) {
-    let pager_name = env::var_os("PAGER").unwrap_or_else(|| {
-        if cfg!(windows) { OsString::from("more.com") } else { OsString::from("less") }
-    });
-
-    let mut fallback_to_println = false;
-
-    match Command::new(pager_name).stdin(Stdio::piped()).spawn() {
-        Ok(mut pager) => {
-            if let Some(pipe) = pager.stdin.as_mut() {
-                if pipe.write_all(content.as_bytes()).is_err() {
-                    fallback_to_println = true;
-                }
-            }
-
-            if pager.wait().is_err() {
-                fallback_to_println = true;
-            }
-        }
-        Err(_) => {
-            fallback_to_println = true;
-        }
-    }
-
-    // If pager fails for whatever reason, we should still print the content
-    // to standard output
-    if fallback_to_println {
-        print!("{content}");
-    }
-}
-
-pub fn try_process_rlink(sess: &Session, compiler: &interface::Compiler) -> Compilation {
-    if sess.opts.unstable_opts.link_only {
-        if let Input::File(file) = &sess.io.input {
-            // FIXME: #![crate_type] and #![crate_name] support not implemented yet
-            sess.init_crate_types(collect_crate_types(sess, &[]));
-            let outputs = compiler.build_output_filenames(sess, &[]);
-            let rlink_data = fs::read(file).unwrap_or_else(|err| {
-                sess.emit_fatal(RlinkUnableToRead { err });
-            });
-            let codegen_results = match CodegenResults::deserialize_rlink(rlink_data) {
-                Ok(codegen) => codegen,
-                Err(err) => {
-                    match err {
-                        CodegenErrors::WrongFileType => sess.emit_fatal(RLinkWrongFileType),
-                        CodegenErrors::EmptyVersionNumber => {
-                            sess.emit_fatal(RLinkEmptyVersionNumber)
-                        }
-                        CodegenErrors::EncodingVersionMismatch { version_array, rlink_version } => {
-                            sess.emit_fatal(RLinkEncodingVersionMismatch {
-                                version_array,
-                                rlink_version,
-                            })
-                        }
-                        CodegenErrors::RustcVersionMismatch { rustc_version, current_version } => {
-                            sess.emit_fatal(RLinkRustcVersionMismatch {
-                                rustc_version,
-                                current_version,
-                            })
-                        }
-                    };
-                }
-            };
-            let result = compiler.codegen_backend().link(sess, codegen_results, &outputs);
-            abort_on_err(result, sess);
-        } else {
-            sess.emit_fatal(RlinkNotAFile {})
-        }
-        Compilation::Stop
-    } else {
-        Compilation::Continue
-    }
-}
-
-pub fn list_metadata(sess: &Session, metadata_loader: &dyn MetadataLoader) -> Compilation {
-    if sess.opts.unstable_opts.ls {
-        match sess.io.input {
-            Input::File(ref ifile) => {
-                let path = &(*ifile);
-                let mut v = Vec::new();
-                locator::list_file_metadata(&sess.target, path, metadata_loader, &mut v).unwrap();
-                println!("{}", String::from_utf8(v).unwrap());
-            }
-            Input::Str { .. } => {
-                early_error(ErrorOutputType::default(), "cannot list metadata for stdin");
-            }
-        }
-        return Compilation::Stop;
-    }
-
-    Compilation::Continue
-}
-
-fn print_crate_info(
-    codegen_backend: &dyn CodegenBackend,
-    sess: &Session,
-    parse_attrs: bool,
-) -> Compilation {
-    use rustc_session::config::PrintRequest::*;
-    // NativeStaticLibs and LinkArgs are special - printed during linking
-    // (empty iterator returns true)
-    if sess.opts.prints.iter().all(|&p| p == NativeStaticLibs || p == LinkArgs) {
-        return Compilation::Continue;
-    }
-
-    let attrs = if parse_attrs {
-        let result = parse_crate_attrs(sess);
-        match result {
-            Ok(attrs) => Some(attrs),
-            Err(mut parse_error) => {
-                parse_error.emit();
-                return Compilation::Stop;
-            }
-        }
-    } else {
-        None
-    };
-    for req in &sess.opts.prints {
-        match *req {
-            TargetList => {
-                let mut targets = rustc_target::spec::TARGETS.to_vec();
-                targets.sort_unstable();
-                println!("{}", targets.join("\n"));
-            }
-            Sysroot => println!("{}", sess.sysroot.display()),
-            TargetLibdir => println!("{}", sess.target_tlib_path.dir.display()),
-            TargetSpec => {
-                println!("{}", serde_json::to_string_pretty(&sess.target.to_json()).unwrap());
-            }
-            FileNames | CrateName => {
-                let attrs = attrs.as_ref().unwrap();
-                let t_outputs = rustc_interface::util::build_output_filenames(attrs, sess);
-                let id = rustc_session::output::find_crate_name(sess, attrs);
-                if *req == PrintRequest::CrateName {
-                    println!("{id}");
-                    continue;
-                }
-                let crate_types = collect_crate_types(sess, attrs);
-                for &style in &crate_types {
-                    let fname =
-                        rustc_session::output::filename_for_input(sess, style, id, &t_outputs);
-                    println!("{}", fname.file_name().unwrap().to_string_lossy());
-                }
-            }
-            Cfg => {
-                let mut cfgs = sess
-                    .parse_sess
-                    .config
-                    .iter()
-                    .filter_map(|&(name, value)| {
-                        // Note that crt-static is a specially recognized cfg
-                        // directive that's printed out here as part of
-                        // rust-lang/rust#37406, but in general the
-                        // `target_feature` cfg is gated under
-                        // rust-lang/rust#29717. For now this is just
-                        // specifically allowing the crt-static cfg and that's
-                        // it, this is intended to get into Cargo and then go
-                        // through to build scripts.
-                        if (name != sym::target_feature || value != Some(sym::crt_dash_static))
-                            && !sess.is_nightly_build()
-                            && find_gated_cfg(|cfg_sym| cfg_sym == name).is_some()
-                        {
-                            return None;
-                        }
-
-                        if let Some(value) = value {
-                            Some(format!("{name}=\"{value}\""))
-                        } else {
-                            Some(name.to_string())
-                        }
-                    })
-                    .collect::<Vec<String>>();
-
-                cfgs.sort();
-                for cfg in cfgs {
-                    println!("{cfg}");
-                }
-            }
-            CallingConventions => {
-                let mut calling_conventions = rustc_target::spec::abi::all_names();
-                calling_conventions.sort_unstable();
-                println!("{}", calling_conventions.join("\n"));
-            }
-            RelocationModels
-            | CodeModels
-            | TlsModels
-            | TargetCPUs
-            | StackProtectorStrategies
-            | TargetFeatures => {
-                codegen_backend.print(*req, sess);
-            }
-            // Any output here interferes with Cargo's parsing of other printed output
-            NativeStaticLibs => {}
-            LinkArgs => {}
-            SplitDebuginfo => {
-                use rustc_target::spec::SplitDebuginfo::{Off, Packed, Unpacked};
-
-                for split in &[Off, Packed, Unpacked] {
-                    let stable = sess.target.options.supported_split_debuginfo.contains(split);
-                    let unstable_ok = sess.unstable_options();
-                    if stable || unstable_ok {
-                        println!("{split}");
-                    }
-                }
-            }
-        }
-    }
-    Compilation::Stop
-}
-
-/// Prints version information
-///
-/// NOTE: this is a macro to support drivers built at a different time than the main `rustc_driver` crate.
-pub macro version($binary: literal, $matches: expr) {
-    fn unw(x: Option<&str>) -> &str {
-        x.unwrap_or("unknown")
-    }
-    $crate::version_at_macro_invocation(
-        $binary,
-        $matches,
-        unw(option_env!("CFG_VERSION")),
-        unw(option_env!("CFG_VER_HASH")),
-        unw(option_env!("CFG_VER_DATE")),
-        unw(option_env!("CFG_RELEASE")),
-    )
-}
-
-#[doc(hidden)] // use the macro instead
-pub fn version_at_macro_invocation(
-    binary: &str,
-    matches: &getopts::Matches,
-    version: &str,
-    commit_hash: &str,
-    commit_date: &str,
-    release: &str,
-) {
-    let verbose = matches.opt_present("verbose");
-
-    println!("{binary} {version}");
-
-    if verbose {
-        println!("binary: {binary}");
-        println!("commit-hash: {commit_hash}");
-        println!("commit-date: {commit_date}");
-        println!("host: {}", config::host_triple());
-        println!("release: {release}");
-
-        let debug_flags = matches.opt_strs("Z");
-        let backend_name = debug_flags.iter().find_map(|x| x.strip_prefix("codegen-backend="));
-        get_codegen_backend(&None, backend_name).print_version();
-    }
-}
-
-fn usage(verbose: bool, include_unstable_options: bool, nightly_build: bool) {
-    let groups = if verbose { config::rustc_optgroups() } else { config::rustc_short_optgroups() };
-    let mut options = getopts::Options::new();
-    for option in groups.iter().filter(|x| include_unstable_options || x.is_stable()) {
-        (option.apply)(&mut options);
-    }
-    let message = "Usage: rustc [OPTIONS] INPUT";
-    let nightly_help = if nightly_build {
-        "\n    -Z help             Print unstable compiler options"
-    } else {
-        ""
-    };
-    let verbose_help = if verbose {
-        ""
-    } else {
-        "\n    --help -v           Print the full set of options rustc accepts"
-    };
-    let at_path = if verbose {
-        "    @path               Read newline separated options from `path`\n"
-    } else {
-        ""
-    };
-    println!(
-        "{options}{at_path}\nAdditional help:
-    -C help             Print codegen options
-    -W help             \
-              Print 'lint' options and default settings{nightly}{verbose}\n",
-        options = options.usage(message),
-        at_path = at_path,
-        nightly = nightly_help,
-        verbose = verbose_help
-    );
-}
-
-fn print_wall_help() {
-    println!(
-        "
-The flag `-Wall` does not exist in `rustc`. Most useful lints are enabled by
-default. Use `rustc -W help` to see all available lints. It's more common to put
-warning settings in the crate root using `#![warn(LINT_NAME)]` instead of using
-the command line flag directly.
-"
-    );
-}
-
-/// Write to stdout lint command options, together with a list of all available lints
-pub fn describe_lints(sess: &Session, lint_store: &LintStore, loaded_plugins: bool) {
-    println!(
-        "
-Available lint options:
-    -W <foo>           Warn about <foo>
-    -A <foo>           \
-              Allow <foo>
-    -D <foo>           Deny <foo>
-    -F <foo>           Forbid <foo> \
-              (deny <foo> and all attempts to override)
-
-"
-    );
-
-    fn sort_lints(sess: &Session, mut lints: Vec<&'static Lint>) -> Vec<&'static Lint> {
-        // The sort doesn't case-fold but it's doubtful we care.
-        lints.sort_by_cached_key(|x: &&Lint| (x.default_level(sess.edition()), x.name));
-        lints
-    }
-
-    fn sort_lint_groups(
-        lints: Vec<(&'static str, Vec<LintId>, bool)>,
-    ) -> Vec<(&'static str, Vec<LintId>)> {
-        let mut lints: Vec<_> = lints.into_iter().map(|(x, y, _)| (x, y)).collect();
-        lints.sort_by_key(|l| l.0);
-        lints
-    }
-
-    let (plugin, builtin): (Vec<_>, _) =
-        lint_store.get_lints().iter().cloned().partition(|&lint| lint.is_plugin);
-    let plugin = sort_lints(sess, plugin);
-    let builtin = sort_lints(sess, builtin);
-
-    let (plugin_groups, builtin_groups): (Vec<_>, _) =
-        lint_store.get_lint_groups().partition(|&(.., p)| p);
-    let plugin_groups = sort_lint_groups(plugin_groups);
-    let builtin_groups = sort_lint_groups(builtin_groups);
-
-    let max_name_len =
-        plugin.iter().chain(&builtin).map(|&s| s.name.chars().count()).max().unwrap_or(0);
-    let padded = |x: &str| {
-        let mut s = " ".repeat(max_name_len - x.chars().count());
-        s.push_str(x);
-        s
-    };
-
-    println!("Lint checks provided by rustc:\n");
-
-    let print_lints = |lints: Vec<&Lint>| {
-        println!("    {}  {:7.7}  {}", padded("name"), "default", "meaning");
-        println!("    {}  {:7.7}  {}", padded("----"), "-------", "-------");
-        for lint in lints {
-            let name = lint.name_lower().replace('_', "-");
-            println!(
-                "    {}  {:7.7}  {}",
-                padded(&name),
-                lint.default_level(sess.edition()).as_str(),
-                lint.desc
-            );
-        }
-        println!("\n");
-    };
-
-    print_lints(builtin);
-
-    let max_name_len = max(
-        "warnings".len(),
-        plugin_groups
-            .iter()
-            .chain(&builtin_groups)
-            .map(|&(s, _)| s.chars().count())
-            .max()
-            .unwrap_or(0),
-    );
-
-    let padded = |x: &str| {
-        let mut s = " ".repeat(max_name_len - x.chars().count());
-        s.push_str(x);
-        s
-    };
-
-    println!("Lint groups provided by rustc:\n");
-
-    let print_lint_groups = |lints: Vec<(&'static str, Vec<LintId>)>, all_warnings| {
-        println!("    {}  sub-lints", padded("name"));
-        println!("    {}  ---------", padded("----"));
-
-        if all_warnings {
-            println!("    {}  all lints that are set to issue warnings", padded("warnings"));
-        }
-
-        for (name, to) in lints {
-            let name = name.to_lowercase().replace('_', "-");
-            let desc = to
-                .into_iter()
-                .map(|x| x.to_string().replace('_', "-"))
-                .collect::<Vec<String>>()
-                .join(", ");
-            println!("    {}  {}", padded(&name), desc);
-        }
-        println!("\n");
-    };
-
-    print_lint_groups(builtin_groups, true);
-
-    match (loaded_plugins, plugin.len(), plugin_groups.len()) {
-        (false, 0, _) | (false, _, 0) => {
-            println!("Lint tools like Clippy can provide additional lints and lint groups.");
-        }
-        (false, ..) => panic!("didn't load lint plugins but got them anyway!"),
-        (true, 0, 0) => println!("This crate does not load any lint plugins or lint groups."),
-        (true, l, g) => {
-            if l > 0 {
-                println!("Lint checks provided by plugins loaded by this crate:\n");
-                print_lints(plugin);
-            }
-            if g > 0 {
-                println!("Lint groups provided by plugins loaded by this crate:\n");
-                print_lint_groups(plugin_groups, false);
-            }
-        }
-    }
-}
-
-fn describe_debug_flags() {
-    println!("\nAvailable options:\n");
-    print_flag_list("-Z", config::Z_OPTIONS);
-}
-
-fn describe_codegen_flags() {
-    println!("\nAvailable codegen options:\n");
-    print_flag_list("-C", config::CG_OPTIONS);
-}
-
-pub fn print_flag_list<T>(
-    cmdline_opt: &str,
-    flag_list: &[(&'static str, T, &'static str, &'static str)],
-) {
-    let max_len = flag_list.iter().map(|&(name, _, _, _)| name.chars().count()).max().unwrap_or(0);
-
-    for &(name, _, _, desc) in flag_list {
-        println!(
-            "    {} {:>width$}=val -- {}",
-            cmdline_opt,
-            name.replace('_', "-"),
-            desc,
-            width = max_len
-        );
-    }
-}
-
-/// Process command line options. Emits messages as appropriate. If compilation
-/// should continue, returns a getopts::Matches object parsed from args,
-/// otherwise returns `None`.
-///
-/// The compiler's handling of options is a little complicated as it ties into
-/// our stability story. The current intention of each compiler option is to
-/// have one of two modes:
-///
-/// 1. An option is stable and can be used everywhere.
-/// 2. An option is unstable, and can only be used on nightly.
-///
-/// Like unstable library and language features, however, unstable options have
-/// always required a form of "opt in" to indicate that you're using them. This
-/// provides the easy ability to scan a code base to check to see if anything
-/// unstable is being used. Currently, this "opt in" is the `-Z` "zed" flag.
-///
-/// All options behind `-Z` are considered unstable by default. Other top-level
-/// options can also be considered unstable, and they were unlocked through the
-/// `-Z unstable-options` flag. Note that `-Z` remains to be the root of
-/// instability in both cases, though.
-///
-/// So with all that in mind, the comments below have some more detail about the
-/// contortions done here to get things to work out correctly.
-pub fn handle_options(args: &[String]) -> Option<getopts::Matches> {
-    // Throw away the first argument, the name of the binary
-    let args = &args[1..];
-
-    if args.is_empty() {
-        // user did not write `-v` nor `-Z unstable-options`, so do not
-        // include that extra information.
-        let nightly_build =
-            rustc_feature::UnstableFeatures::from_environment(None).is_nightly_build();
-        usage(false, false, nightly_build);
-        return None;
-    }
-
-    // Parse with *all* options defined in the compiler, we don't worry about
-    // option stability here we just want to parse as much as possible.
-    let mut options = getopts::Options::new();
-    for option in config::rustc_optgroups() {
-        (option.apply)(&mut options);
-    }
-    let matches = options.parse(args).unwrap_or_else(|e| {
-        let msg = match e {
-            getopts::Fail::UnrecognizedOption(ref opt) => CG_OPTIONS
-                .iter()
-                .map(|&(name, ..)| ('C', name))
-                .chain(Z_OPTIONS.iter().map(|&(name, ..)| ('Z', name)))
-                .find(|&(_, name)| *opt == name.replace('_', "-"))
-                .map(|(flag, _)| format!("{e}. Did you mean `-{flag} {opt}`?")),
-            _ => None,
-        };
-        early_error(ErrorOutputType::default(), &msg.unwrap_or_else(|| e.to_string()));
-    });
-
-    // For all options we just parsed, we check a few aspects:
-    //
-    // * If the option is stable, we're all good
-    // * If the option wasn't passed, we're all good
-    // * If `-Z unstable-options` wasn't passed (and we're not a -Z option
-    //   ourselves), then we require the `-Z unstable-options` flag to unlock
-    //   this option that was passed.
-    // * If we're a nightly compiler, then unstable options are now unlocked, so
-    //   we're good to go.
-    // * Otherwise, if we're an unstable option then we generate an error
-    //   (unstable option being used on stable)
-    nightly_options::check_nightly_options(&matches, &config::rustc_optgroups());
-
-    if matches.opt_present("h") || matches.opt_present("help") {
-        // Only show unstable options in --help if we accept unstable options.
-        let unstable_enabled = nightly_options::is_unstable_enabled(&matches);
-        let nightly_build = nightly_options::match_is_nightly_build(&matches);
-        usage(matches.opt_present("verbose"), unstable_enabled, nightly_build);
-        return None;
-    }
-
-    // Handle the special case of -Wall.
-    let wall = matches.opt_strs("W");
-    if wall.iter().any(|x| *x == "all") {
-        print_wall_help();
-        rustc_errors::FatalError.raise();
-    }
-
-    // Don't handle -W help here, because we might first load plugins.
-    let debug_flags = matches.opt_strs("Z");
-    if debug_flags.iter().any(|x| *x == "help") {
-        describe_debug_flags();
-        return None;
-    }
-
-    let cg_flags = matches.opt_strs("C");
-
-    if cg_flags.iter().any(|x| *x == "help") {
-        describe_codegen_flags();
-        return None;
-    }
-
-    if cg_flags.iter().any(|x| *x == "no-stack-check") {
-        early_warn(
-            ErrorOutputType::default(),
-            "the --no-stack-check flag is deprecated and does nothing",
-        );
-    }
-
-    if cg_flags.iter().any(|x| *x == "passes=list") {
-        let backend_name = debug_flags.iter().find_map(|x| x.strip_prefix("codegen-backend="));
-        get_codegen_backend(&None, backend_name).print_passes();
-        return None;
-    }
-
-    if matches.opt_present("version") {
-        version!("rustc", &matches);
-        return None;
-    }
-
-    Some(matches)
-}
-
-fn parse_crate_attrs<'a>(sess: &'a Session) -> PResult<'a, ast::AttrVec> {
-    match &sess.io.input {
-        Input::File(ifile) => rustc_parse::parse_crate_attrs_from_file(ifile, &sess.parse_sess),
-        Input::Str { name, input } => rustc_parse::parse_crate_attrs_from_source_str(
-            name.clone(),
-            input.clone(),
-            &sess.parse_sess,
-        ),
-    }
-}
-
-/// Gets a list of extra command-line flags provided by the user, as strings.
-///
-/// This function is used during ICEs to show more information useful for
-/// debugging, since some ICEs only happens with non-default compiler flags
-/// (and the users don't always report them).
-fn extra_compiler_flags() -> Option<(Vec<String>, bool)> {
-    let mut args = env::args_os().map(|arg| arg.to_string_lossy().to_string()).peekable();
-
-    let mut result = Vec::new();
-    let mut excluded_cargo_defaults = false;
-    while let Some(arg) = args.next() {
-        if let Some(a) = ICE_REPORT_COMPILER_FLAGS.iter().find(|a| arg.starts_with(*a)) {
-            let content = if arg.len() == a.len() {
-                // A space-separated option, like `-C incremental=foo` or `--crate-type rlib`
-                match args.next() {
-                    Some(arg) => arg.to_string(),
-                    None => continue,
-                }
-            } else if arg.get(a.len()..a.len() + 1) == Some("=") {
-                // An equals option, like `--crate-type=rlib`
-                arg[a.len() + 1..].to_string()
-            } else {
-                // A non-space option, like `-Cincremental=foo`
-                arg[a.len()..].to_string()
-            };
-            let option = content.split_once('=').map(|s| s.0).unwrap_or(&content);
-            if ICE_REPORT_COMPILER_FLAGS_EXCLUDE.iter().any(|exc| option == *exc) {
-                excluded_cargo_defaults = true;
-            } else {
-                result.push(a.to_string());
-                match ICE_REPORT_COMPILER_FLAGS_STRIP_VALUE.iter().find(|s| option == **s) {
-                    Some(s) => result.push(format!("{s}=[REDACTED]")),
-                    None => result.push(content),
-                }
-            }
-        }
-    }
-
-    if !result.is_empty() { Some((result, excluded_cargo_defaults)) } else { None }
-}
-
-/// Runs a closure and catches unwinds triggered by fatal errors.
-///
-/// The compiler currently unwinds with a special sentinel value to abort
-/// compilation on fatal errors. This function catches that sentinel and turns
-/// the panic into a `Result` instead.
-pub fn catch_fatal_errors<F: FnOnce() -> R, R>(f: F) -> Result<R, ErrorGuaranteed> {
-    catch_unwind(panic::AssertUnwindSafe(f)).map_err(|value| {
-        if value.is::<rustc_errors::FatalErrorMarker>() {
-            ErrorGuaranteed::unchecked_claim_error_was_emitted()
-        } else {
-            panic::resume_unwind(value);
-        }
-    })
-}
-
-/// Variant of `catch_fatal_errors` for the `interface::Result` return type
-/// that also computes the exit code.
-pub fn catch_with_exit_code(f: impl FnOnce() -> interface::Result<()>) -> i32 {
-    let result = catch_fatal_errors(f).and_then(|result| result);
-    match result {
-        Ok(()) => EXIT_SUCCESS,
-        Err(_) => EXIT_FAILURE,
-    }
-}
-
-static DEFAULT_HOOK: LazyLock<Box<dyn Fn(&panic::PanicInfo<'_>) + Sync + Send + 'static>> =
-    LazyLock::new(|| {
-        let hook = panic::take_hook();
-        panic::set_hook(Box::new(|info| {
-            // If the error was caused by a broken pipe then this is not a bug.
-            // Write the error and return immediately. See #98700.
-            #[cfg(windows)]
-            if let Some(msg) = info.payload().downcast_ref::<String>() {
-                if msg.starts_with("failed printing to stdout: ") && msg.ends_with("(os error 232)")
-                {
-                    early_error_no_abort(ErrorOutputType::default(), &msg);
-                    return;
-                }
-            };
-
-            // Invoke the default handler, which prints the actual panic message and optionally a backtrace
-            // Don't do this for delayed bugs, which already emit their own more useful backtrace.
-            if !info.payload().is::<rustc_errors::DelayedBugPanic>() {
-                (*DEFAULT_HOOK)(info);
-
-                // Separate the output with an empty line
-                eprintln!();
-            }
-
-            // Print the ICE message
-            report_ice(info, BUG_REPORT_URL);
-        }));
-        hook
-    });
-
-/// Prints the ICE message, including query stack, but without backtrace.
-///
-/// The message will point the user at `bug_report_url` to report the ICE.
-///
-/// When `install_ice_hook` is called, this function will be called as the panic
-/// hook.
-pub fn report_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str) {
-    let fallback_bundle =
-        rustc_errors::fallback_fluent_bundle(rustc_errors::DEFAULT_LOCALE_RESOURCES, false);
-    let emitter = Box::new(rustc_errors::emitter::EmitterWriter::stderr(
-        rustc_errors::ColorConfig::Auto,
-        None,
-        None,
-        fallback_bundle,
-        false,
-        false,
-        None,
-        false,
-        false,
-    ));
-    let handler = rustc_errors::Handler::with_emitter(true, None, emitter);
-
-    // a .span_bug or .bug call has already printed what
-    // it wants to print.
-    if !info.payload().is::<rustc_errors::ExplicitBug>()
-        && !info.payload().is::<rustc_errors::DelayedBugPanic>()
-    {
-        let mut d = rustc_errors::Diagnostic::new(rustc_errors::Level::Bug, "unexpected panic");
-        handler.emit_diagnostic(&mut d);
-    }
-
-    let mut xs: Vec<Cow<'static, str>> = vec![
-        "the compiler unexpectedly panicked. this is a bug.".into(),
-        format!("we would appreciate a bug report: {bug_report_url}").into(),
-        format!(
-            "rustc {} running on {}",
-            util::version_str!().unwrap_or("unknown_version"),
-            config::host_triple()
-        )
-        .into(),
-    ];
-
-    if let Some((flags, excluded_cargo_defaults)) = extra_compiler_flags() {
-        xs.push(format!("compiler flags: {}", flags.join(" ")).into());
-
-        if excluded_cargo_defaults {
-            xs.push("some of the compiler flags provided by cargo are hidden".into());
-        }
-    }
-
-    for note in &xs {
-        handler.note_without_error(note.as_ref());
-    }
-
-    // If backtraces are enabled, also print the query stack
-    let backtrace = env::var_os("RUST_BACKTRACE").map_or(false, |x| &x != "0");
-
-    let num_frames = if backtrace { None } else { Some(2) };
-
-    interface::try_print_query_stack(&handler, num_frames);
-
-    #[cfg(windows)]
-    unsafe {
-        if env::var("RUSTC_BREAK_ON_ICE").is_ok() {
-            // Trigger a debugger if we crashed during bootstrap
-            winapi::um::debugapi::DebugBreak();
-        }
-    }
-}
-
-/// Installs a panic hook that will print the ICE message on unexpected panics.
-///
-/// A custom rustc driver can skip calling this to set up a custom ICE hook.
-pub fn install_ice_hook() {
-    // 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
-    // by the user. Compiler developers and other rustc users can
-    // opt in to less-verbose backtraces by manually setting "RUST_BACKTRACE"
-    // (e.g. `RUST_BACKTRACE=1`)
-    if std::env::var("RUST_BACKTRACE").is_err() {
-        std::env::set_var("RUST_BACKTRACE", "full");
-    }
-    LazyLock::force(&DEFAULT_HOOK);
-}
-
-/// This allows tools to enable rust logging without having to magically match rustc's
-/// tracing crate version.
-pub fn init_rustc_env_logger() {
-    init_rustc_env_logger_with_backtrace_option(&None);
-}
-
-/// This allows tools to enable rust logging without having to magically match rustc's
-/// tracing crate version. In contrast to `init_rustc_env_logger` it allows you to
-/// choose a target module you wish to show backtraces along with its logging.
-pub fn init_rustc_env_logger_with_backtrace_option(backtrace_target: &Option<String>) {
-    if let Err(error) = rustc_log::init_rustc_env_logger_with_backtrace_option(backtrace_target) {
-        early_error(ErrorOutputType::default(), &error.to_string());
-    }
-}
-
-/// This allows tools to enable rust logging without having to magically match rustc's
-/// tracing crate version. In contrast to `init_rustc_env_logger` it allows you to choose an env var
-/// other than `RUSTC_LOG`.
-pub fn init_env_logger(env: &str) {
-    if let Err(error) = rustc_log::init_env_logger(env) {
-        early_error(ErrorOutputType::default(), &error.to_string());
-    }
-}
-
-#[cfg(all(unix, any(target_env = "gnu", target_os = "macos")))]
-mod signal_handler {
-    extern "C" {
-        fn backtrace_symbols_fd(
-            buffer: *const *mut libc::c_void,
-            size: libc::c_int,
-            fd: libc::c_int,
-        );
-    }
-
-    extern "C" fn print_stack_trace(_: libc::c_int) {
-        const MAX_FRAMES: usize = 256;
-        static mut STACK_TRACE: [*mut libc::c_void; MAX_FRAMES] =
-            [std::ptr::null_mut(); MAX_FRAMES];
-        unsafe {
-            let depth = libc::backtrace(STACK_TRACE.as_mut_ptr(), MAX_FRAMES as i32);
-            if depth == 0 {
-                return;
-            }
-            backtrace_symbols_fd(STACK_TRACE.as_ptr(), depth, 2);
-        }
-    }
-
-    /// When an error signal (such as SIGABRT or SIGSEGV) is delivered to the
-    /// process, print a stack trace and then exit.
-    pub(super) fn install() {
-        unsafe {
-            const ALT_STACK_SIZE: usize = libc::MINSIGSTKSZ + 64 * 1024;
-            let mut alt_stack: libc::stack_t = std::mem::zeroed();
-            alt_stack.ss_sp =
-                std::alloc::alloc(std::alloc::Layout::from_size_align(ALT_STACK_SIZE, 1).unwrap())
-                    as *mut libc::c_void;
-            alt_stack.ss_size = ALT_STACK_SIZE;
-            libc::sigaltstack(&alt_stack, std::ptr::null_mut());
-
-            let mut sa: libc::sigaction = std::mem::zeroed();
-            sa.sa_sigaction = print_stack_trace as libc::sighandler_t;
-            sa.sa_flags = libc::SA_NODEFER | libc::SA_RESETHAND | libc::SA_ONSTACK;
-            libc::sigemptyset(&mut sa.sa_mask);
-            libc::sigaction(libc::SIGSEGV, &sa, std::ptr::null_mut());
-        }
-    }
-}
-
-#[cfg(not(all(unix, any(target_env = "gnu", target_os = "macos"))))]
-mod signal_handler {
-    pub(super) fn install() {}
-}
-
-pub fn main() -> ! {
-    let start_time = Instant::now();
-    let start_rss = get_resident_set_size();
-    signal_handler::install();
-    let mut callbacks = TimePassesCallbacks::default();
-    install_ice_hook();
-    let exit_code = catch_with_exit_code(|| {
-        let args = env::args_os()
-            .enumerate()
-            .map(|(i, arg)| {
-                arg.into_string().unwrap_or_else(|arg| {
-                    early_error(
-                        ErrorOutputType::default(),
-                        &format!("argument {i} is not valid Unicode: {arg:?}"),
-                    )
-                })
-            })
-            .collect::<Vec<_>>();
-        RunCompiler::new(&args, &mut callbacks).run()
-    });
-
-    if callbacks.time_passes {
-        let end_rss = get_resident_set_size();
-        print_time_passes_entry("total", start_time.elapsed(), start_rss, end_rss);
-    }
-
-    process::exit(exit_code)
-}
+pub use rustc_driver_impl::*;