1 // Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! The Rust compiler.
15 //! This API is completely unstable and subject to change.
17 // Do not remove on snapshot creation. Needed for bootstrap. (Issue #22364)
18 #![cfg_attr(stage0, feature(custom_attribute))]
19 #![crate_name = "rustc_driver"]
20 #![unstable(feature = "rustc_private")]
22 #![crate_type = "dylib"]
23 #![crate_type = "rlib"]
24 #![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
25 html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
26 html_root_url = "http://doc.rust-lang.org/nightly/")]
28 #![feature(box_syntax)]
31 #![feature(rustc_diagnostic_macros)]
32 #![feature(rustc_private)]
33 #![feature(set_stdio)]
34 #![feature(staged_api)]
35 #![feature(vec_push_all)]
40 extern crate graphviz;
43 extern crate rustc_back;
44 extern crate rustc_borrowck;
45 extern crate rustc_lint;
46 extern crate rustc_privacy;
47 extern crate rustc_resolve;
48 extern crate rustc_trans;
49 extern crate rustc_typeck;
50 extern crate serialize;
51 extern crate rustc_llvm as llvm;
52 #[macro_use] extern crate log;
53 #[macro_use] extern crate syntax;
55 pub use syntax::diagnostic;
57 use driver::CompileController;
58 use pretty::{PpMode, UserIdentifiedItem};
60 use rustc_resolve as resolve;
61 use rustc_trans::back::link;
62 use rustc_trans::save;
63 use rustc::session::{config, Session, build_session};
64 use rustc::session::config::{Input, PrintRequest};
65 use rustc::lint::Lint;
68 use rustc::util::common::time;
70 use std::cmp::Ordering::Equal;
72 use std::io::{self, Read, Write};
73 use std::iter::repeat;
74 use std::path::PathBuf;
77 use std::sync::{Arc, Mutex};
80 use rustc::session::early_error;
84 use syntax::diagnostic::Emitter;
85 use syntax::diagnostics;
94 const BUG_REPORT_URL: &'static str =
95 "https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports";
98 pub fn run(args: Vec<String>) -> isize {
99 monitor(move || run_compiler(&args, &mut RustcDefaultCalls));
103 // Parse args and run the compiler. This is the primary entry point for rustc.
104 // See comments on CompilerCalls below for details about the callbacks argument.
105 pub fn run_compiler<'a>(args: &[String],
106 callbacks: &mut CompilerCalls<'a>) {
107 macro_rules! do_or_return {($expr: expr) => {
109 Compilation::Stop => return,
110 Compilation::Continue => {}
114 let matches = match handle_options(args.to_vec()) {
115 Some(matches) => matches,
119 let descriptions = diagnostics_registry();
121 do_or_return!(callbacks.early_callback(&matches, &descriptions));
123 let sopts = config::build_session_options(&matches);
125 let (odir, ofile) = make_output(&matches);
126 let (input, input_file_path) = match make_input(&matches.free) {
127 Some((input, input_file_path)) => callbacks.some_input(input, input_file_path),
128 None => match callbacks.no_input(&matches, &sopts, &odir, &ofile, &descriptions) {
129 Some((input, input_file_path)) => (input, input_file_path),
134 let mut sess = build_session(sopts, input_file_path, descriptions);
135 rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
136 if sess.unstable_options() {
137 sess.opts.show_span = matches.opt_str("show-span");
139 let cfg = config::build_configuration(&sess);
141 do_or_return!(callbacks.late_callback(&matches, &sess, &input, &odir, &ofile));
143 // It is somewhat unfortunate that this is hardwired in - this is forced by
144 // the fact that pretty_print_input requires the session by value.
145 let pretty = callbacks.parse_pretty(&sess, &matches);
147 Some((ppm, opt_uii)) => {
148 pretty::pretty_print_input(sess, cfg, &input, ppm, opt_uii, ofile);
151 None => {/* continue */ }
154 let plugins = sess.opts.debugging_opts.extra_plugins.clone();
155 let control = callbacks.build_controller(&sess);
156 driver::compile_input(sess, cfg, &input, &odir, &ofile, Some(plugins), control);
159 // Extract output directory and file from matches.
160 fn make_output(matches: &getopts::Matches) -> (Option<PathBuf>, Option<PathBuf>) {
161 let odir = matches.opt_str("out-dir").map(|o| PathBuf::from(&o));
162 let ofile = matches.opt_str("o").map(|o| PathBuf::from(&o));
166 // Extract input (string or file and optional path) from matches.
167 fn make_input(free_matches: &[String]) -> Option<(Input, Option<PathBuf>)> {
168 if free_matches.len() == 1 {
169 let ifile = &free_matches[0][..];
171 let mut src = String::new();
172 io::stdin().read_to_string(&mut src).unwrap();
173 Some((Input::Str(src), None))
175 Some((Input::File(PathBuf::from(ifile)), Some(PathBuf::from(ifile))))
182 // Whether to stop or continue compilation.
183 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
184 pub enum Compilation {
190 pub fn and_then<F: FnOnce() -> Compilation>(self, next: F) -> Compilation {
192 Compilation::Stop => Compilation::Stop,
193 Compilation::Continue => next()
198 // A trait for customising the compilation process. Offers a number of hooks for
199 // executing custom code or customising input.
200 pub trait CompilerCalls<'a> {
201 // Hook for a callback early in the process of handling arguments. This will
202 // be called straight after options have been parsed but before anything
203 // else (e.g., selecting input and output).
204 fn early_callback(&mut self,
206 &diagnostics::registry::Registry)
209 // Hook for a callback late in the process of handling arguments. This will
210 // be called just before actual compilation starts (and before build_controller
211 // is called), after all arguments etc. have been completely handled.
212 fn late_callback(&mut self,
220 // Called after we extract the input from the arguments. Gives the implementer
221 // an opportunity to change the inputs or to add some custom input handling.
222 // The default behaviour is to simply pass through the inputs.
223 fn some_input(&mut self, input: Input, input_path: Option<PathBuf>)
224 -> (Input, Option<PathBuf>) {
228 // Called after we extract the input from the arguments if there is no valid
229 // input. Gives the implementer an opportunity to supply alternate input (by
230 // returning a Some value) or to add custom behaviour for this error such as
231 // emitting error messages. Returning None will cause compilation to stop
233 fn no_input(&mut self,
238 &diagnostics::registry::Registry)
239 -> Option<(Input, Option<PathBuf>)>;
241 // Parse pretty printing information from the arguments. The implementer can
242 // choose to ignore this (the default will return None) which will skip pretty
243 // printing. If you do want to pretty print, it is recommended to use the
244 // implementation of this method from RustcDefaultCalls.
245 // FIXME, this is a terrible bit of API. Parsing of pretty printing stuff
246 // should be done as part of the framework and the implementor should customise
247 // handling of it. However, that is not possible atm because pretty printing
248 // essentially goes off and takes another path through the compiler which
249 // means the session is either moved or not depending on what parse_pretty
250 // returns (we could fix this by cloning, but it's another hack). The proper
251 // solution is to handle pretty printing as if it were a compiler extension,
252 // extending CompileController to make this work (see for example the treatment
253 // of save-analysis in RustcDefaultCalls::build_controller).
254 fn parse_pretty(&mut self,
256 _matches: &getopts::Matches)
257 -> Option<(PpMode, Option<UserIdentifiedItem>)> {
261 // Create a CompilController struct for controlling the behaviour of compilation.
262 fn build_controller(&mut self, &Session) -> CompileController<'a>;
265 // CompilerCalls instance for a regular rustc build.
266 #[derive(Copy, Clone)]
267 pub struct RustcDefaultCalls;
269 impl<'a> CompilerCalls<'a> for RustcDefaultCalls {
270 fn early_callback(&mut self,
271 matches: &getopts::Matches,
272 descriptions: &diagnostics::registry::Registry)
274 match matches.opt_str("explain") {
276 match descriptions.find_description(&code[..]) {
277 Some(ref description) => {
278 // Slice off the leading newline and print.
279 print!("{}", &description[1..]);
282 early_error(&format!("no extended information for {}", code));
285 return Compilation::Stop;
290 return Compilation::Continue;
293 fn no_input(&mut self,
294 matches: &getopts::Matches,
295 sopts: &config::Options,
296 odir: &Option<PathBuf>,
297 ofile: &Option<PathBuf>,
298 descriptions: &diagnostics::registry::Registry)
299 -> Option<(Input, Option<PathBuf>)> {
300 match matches.free.len() {
302 if sopts.describe_lints {
303 let mut ls = lint::LintStore::new();
304 rustc_lint::register_builtins(&mut ls, None);
305 describe_lints(&ls, false);
308 let sess = build_session(sopts.clone(), None, descriptions.clone());
309 rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
310 let should_stop = RustcDefaultCalls::print_crate_info(&sess, None, odir, ofile);
311 if should_stop == Compilation::Stop {
314 early_error("no input filename given");
316 1 => panic!("make_input should have provided valid inputs"),
317 _ => early_error("multiple input filenames provided")
323 fn parse_pretty(&mut self,
325 matches: &getopts::Matches)
326 -> Option<(PpMode, Option<UserIdentifiedItem>)> {
327 let pretty = if sess.opts.debugging_opts.unstable_options {
328 matches.opt_default("pretty", "normal").map(|a| {
329 // stable pretty-print variants only
330 pretty::parse_pretty(sess, &a, false)
335 if pretty.is_none() && sess.unstable_options() {
336 matches.opt_str("xpretty").map(|a| {
337 // extended with unstable pretty-print variants
338 pretty::parse_pretty(sess, &a, true)
345 fn late_callback(&mut self,
346 matches: &getopts::Matches,
349 odir: &Option<PathBuf>,
350 ofile: &Option<PathBuf>)
352 RustcDefaultCalls::print_crate_info(sess, Some(input), odir, ofile).and_then(
353 || RustcDefaultCalls::list_metadata(sess, matches, input))
356 fn build_controller(&mut self, sess: &Session) -> CompileController<'a> {
357 let mut control = CompileController::basic();
359 if sess.opts.parse_only ||
360 sess.opts.show_span.is_some() ||
361 sess.opts.debugging_opts.ast_json_noexpand {
362 control.after_parse.stop = Compilation::Stop;
365 if sess.opts.no_analysis || sess.opts.debugging_opts.ast_json {
366 control.after_write_deps.stop = Compilation::Stop;
369 if sess.opts.no_trans {
370 control.after_analysis.stop = Compilation::Stop;
373 if !sess.opts.output_types.iter().any(|&i| i == config::OutputTypeExe) {
374 control.after_llvm.stop = Compilation::Stop;
377 if sess.opts.debugging_opts.save_analysis {
378 control.after_analysis.callback = box |state| {
379 time(state.session.time_passes(),
381 |_| save::process_crate(state.tcx.unwrap(),
382 state.analysis.unwrap(),
385 control.make_glob_map = resolve::MakeGlobMap::Yes;
392 impl RustcDefaultCalls {
393 pub fn list_metadata(sess: &Session,
394 matches: &getopts::Matches,
397 let r = matches.opt_strs("Z");
398 if r.contains(&("ls".to_string())) {
400 &Input::File(ref ifile) => {
401 let path = &(*ifile);
402 let mut v = Vec::new();
403 metadata::loader::list_file_metadata(&sess.target.target,
406 println!("{}", String::from_utf8(v).unwrap());
409 early_error("cannot list metadata for stdin");
412 return Compilation::Stop;
415 return Compilation::Continue;
419 fn print_crate_info(sess: &Session,
420 input: Option<&Input>,
421 odir: &Option<PathBuf>,
422 ofile: &Option<PathBuf>)
424 if sess.opts.prints.is_empty() {
425 return Compilation::Continue;
428 let attrs = input.map(|input| parse_crate_attrs(sess, input));
429 for req in &sess.opts.prints {
431 PrintRequest::Sysroot => println!("{}", sess.sysroot().display()),
432 PrintRequest::FileNames |
433 PrintRequest::CrateName => {
434 let input = match input {
435 Some(input) => input,
436 None => early_error("no input file provided"),
438 let attrs = attrs.as_ref().unwrap();
439 let t_outputs = driver::build_output_filenames(input,
444 let id = link::find_crate_name(Some(sess),
447 if *req == PrintRequest::CrateName {
451 let crate_types = driver::collect_crate_types(sess, attrs);
452 let metadata = driver::collect_crate_metadata(sess, attrs);
453 *sess.crate_metadata.borrow_mut() = metadata;
454 for &style in &crate_types {
455 let fname = link::filename_for_input(sess,
458 &t_outputs.with_extension(""));
459 println!("{}", fname.file_name().unwrap()
465 return Compilation::Stop;
469 /// Returns a version string such as "0.12.0-dev".
470 pub fn release_str() -> Option<&'static str> {
471 option_env!("CFG_RELEASE")
474 /// Returns the full SHA1 hash of HEAD of the Git repo from which rustc was built.
475 pub fn commit_hash_str() -> Option<&'static str> {
476 option_env!("CFG_VER_HASH")
479 /// Returns the "commit date" of HEAD of the Git repo from which rustc was built as a static string.
480 pub fn commit_date_str() -> Option<&'static str> {
481 option_env!("CFG_VER_DATE")
484 /// Prints version information
485 pub fn version(binary: &str, matches: &getopts::Matches) {
486 let verbose = matches.opt_present("verbose");
488 println!("{} {}", binary, option_env!("CFG_VERSION").unwrap_or("unknown version"));
490 fn unw(x: Option<&str>) -> &str { x.unwrap_or("unknown") }
491 println!("binary: {}", binary);
492 println!("commit-hash: {}", unw(commit_hash_str()));
493 println!("commit-date: {}", unw(commit_date_str()));
494 println!("host: {}", config::host_triple());
495 println!("release: {}", unw(release_str()));
499 fn usage(verbose: bool, include_unstable_options: bool) {
500 let groups = if verbose {
501 config::rustc_optgroups()
503 config::rustc_short_optgroups()
505 let groups : Vec<_> = groups.into_iter()
506 .filter(|x| include_unstable_options || x.is_stable())
509 let message = format!("Usage: rustc [OPTIONS] INPUT");
510 let extra_help = if verbose {
513 "\n --help -v Print the full set of options rustc accepts"
517 -C help Print codegen options
518 -W help Print 'lint' options and default settings
519 -Z help Print internal options for debugging rustc{}\n",
520 getopts::usage(&message, &groups),
524 fn describe_lints(lint_store: &lint::LintStore, loaded_plugins: bool) {
526 Available lint options:
527 -W <foo> Warn about <foo>
530 -F <foo> Forbid <foo> (deny, and deny all overrides)
534 fn sort_lints(lints: Vec<(&'static Lint, bool)>) -> Vec<&'static Lint> {
535 let mut lints: Vec<_> = lints.into_iter().map(|(x, _)| x).collect();
536 lints.sort_by(|x: &&Lint, y: &&Lint| {
537 match x.default_level.cmp(&y.default_level) {
538 // The sort doesn't case-fold but it's doubtful we care.
539 Equal => x.name.cmp(y.name),
546 fn sort_lint_groups(lints: Vec<(&'static str, Vec<lint::LintId>, bool)>)
547 -> Vec<(&'static str, Vec<lint::LintId>)> {
548 let mut lints: Vec<_> = lints.into_iter().map(|(x, y, _)| (x, y)).collect();
549 lints.sort_by(|&(x, _): &(&'static str, Vec<lint::LintId>),
550 &(y, _): &(&'static str, Vec<lint::LintId>)| {
556 let (plugin, builtin): (Vec<_>, _) = lint_store.get_lints()
557 .iter().cloned().partition(|&(_, p)| p);
558 let plugin = sort_lints(plugin);
559 let builtin = sort_lints(builtin);
561 let (plugin_groups, builtin_groups): (Vec<_>, _) = lint_store.get_lint_groups()
562 .iter().cloned().partition(|&(_, _, p)| p);
563 let plugin_groups = sort_lint_groups(plugin_groups);
564 let builtin_groups = sort_lint_groups(builtin_groups);
566 let max_name_len = plugin.iter().chain(&builtin)
567 .map(|&s| s.name.chars().count())
569 let padded = |x: &str| {
570 let mut s = repeat(" ").take(max_name_len - x.chars().count())
571 .collect::<String>();
576 println!("Lint checks provided by rustc:\n");
577 println!(" {} {:7.7} {}", padded("name"), "default", "meaning");
578 println!(" {} {:7.7} {}", padded("----"), "-------", "-------");
580 let print_lints = |lints: Vec<&Lint>| {
582 let name = lint.name_lower().replace("_", "-");
583 println!(" {} {:7.7} {}",
584 padded(&name[..]), lint.default_level.as_str(), lint.desc);
589 print_lints(builtin);
593 let max_name_len = plugin_groups.iter().chain(&builtin_groups)
594 .map(|&(s, _)| s.chars().count())
596 let padded = |x: &str| {
597 let mut s = repeat(" ").take(max_name_len - x.chars().count())
598 .collect::<String>();
603 println!("Lint groups provided by rustc:\n");
604 println!(" {} {}", padded("name"), "sub-lints");
605 println!(" {} {}", padded("----"), "---------");
607 let print_lint_groups = |lints: Vec<(&'static str, Vec<lint::LintId>)>| {
608 for (name, to) in lints {
609 let name = name.to_lowercase().replace("_", "-");
610 let desc = to.into_iter().map(|x| x.as_str().replace("_", "-"))
611 .collect::<Vec<String>>().connect(", ");
613 padded(&name[..]), desc);
618 print_lint_groups(builtin_groups);
620 match (loaded_plugins, plugin.len(), plugin_groups.len()) {
621 (false, 0, _) | (false, _, 0) => {
622 println!("Compiler plugins can provide additional lints and lint groups. To see a \
623 listing of these, re-run `rustc -W help` with a crate filename.");
625 (false, _, _) => panic!("didn't load lint plugins but got them anyway!"),
626 (true, 0, 0) => println!("This crate does not load any lint plugins or lint groups."),
629 println!("Lint checks provided by plugins loaded by this crate:\n");
633 println!("Lint groups provided by plugins loaded by this crate:\n");
634 print_lint_groups(plugin_groups);
640 fn describe_debug_flags() {
641 println!("\nAvailable debug options:\n");
642 for &(name, _, opt_type_desc, desc) in config::DB_OPTIONS {
643 let (width, extra) = match opt_type_desc {
644 Some(..) => (21, "=val"),
647 println!(" -Z {:>width$}{} -- {}", name.replace("_", "-"),
648 extra, desc, width=width);
652 fn describe_codegen_flags() {
653 println!("\nAvailable codegen options:\n");
654 for &(name, _, opt_type_desc, desc) in config::CG_OPTIONS {
655 let (width, extra) = match opt_type_desc {
656 Some(..) => (21, "=val"),
659 println!(" -C {:>width$}{} -- {}", name.replace("_", "-"),
660 extra, desc, width=width);
664 /// Process command line options. Emits messages as appropriate. If compilation
665 /// should continue, returns a getopts::Matches object parsed from args, otherwise
667 pub fn handle_options(mut args: Vec<String>) -> Option<getopts::Matches> {
668 // Throw away the first argument, the name of the binary
669 let _binary = args.remove(0);
672 // user did not write `-v` nor `-Z unstable-options`, so do not
673 // include that extra information.
678 fn allows_unstable_options(matches: &getopts::Matches) -> bool {
679 let r = matches.opt_strs("Z");
680 r.iter().any(|x| *x == "unstable-options")
683 fn parse_all_options(args: &Vec<String>) -> getopts::Matches {
684 let all_groups : Vec<getopts::OptGroup>
685 = config::rustc_optgroups().into_iter().map(|x|x.opt_group).collect();
686 match getopts::getopts(&args[..], &all_groups) {
688 if !allows_unstable_options(&m) {
689 // If -Z unstable-options was not specified, verify that
690 // no unstable options were present.
691 for opt in config::rustc_optgroups().into_iter().filter(|x| !x.is_stable()) {
692 let opt_name = if !opt.opt_group.long_name.is_empty() {
693 &opt.opt_group.long_name
695 &opt.opt_group.short_name
697 if m.opt_present(opt_name) {
698 early_error(&format!("use of unstable option '{}' requires \
699 -Z unstable-options", opt_name));
705 Err(f) => early_error(&f.to_string())
709 // As a speed optimization, first try to parse the command-line using just
710 // the stable options.
711 let matches = match getopts::getopts(&args[..], &config::optgroups()) {
712 Ok(ref m) if allows_unstable_options(m) => {
713 // If -Z unstable-options was specified, redo parsing with the
714 // unstable options to ensure that unstable options are defined
715 // in the returned getopts::Matches.
716 parse_all_options(&args)
720 // redo option parsing, including unstable options this time,
721 // in anticipation that the mishandled option was one of the
723 parse_all_options(&args)
727 if matches.opt_present("h") || matches.opt_present("help") {
728 usage(matches.opt_present("verbose"), allows_unstable_options(&matches));
732 // Don't handle -W help here, because we might first load plugins.
734 let r = matches.opt_strs("Z");
735 if r.iter().any(|x| *x == "help") {
736 describe_debug_flags();
740 let cg_flags = matches.opt_strs("C");
741 if cg_flags.iter().any(|x| *x == "help") {
742 describe_codegen_flags();
746 if cg_flags.contains(&"passes=list".to_string()) {
747 unsafe { ::llvm::LLVMRustPrintPasses(); }
751 if matches.opt_present("version") {
752 version("rustc", &matches);
759 fn parse_crate_attrs(sess: &Session, input: &Input) ->
760 Vec<ast::Attribute> {
761 let result = match *input {
762 Input::File(ref ifile) => {
763 parse::parse_crate_attrs_from_file(ifile,
767 Input::Str(ref src) => {
768 parse::parse_crate_attrs_from_source_str(
769 driver::anon_src().to_string(),
775 result.into_iter().collect()
778 /// Run a procedure which will detect panics in the compiler and print nicer
779 /// error messages rather than just failing the test.
781 /// The diagnostic emitter yielded to the procedure should be used for reporting
782 /// errors of the compiler.
783 pub fn monitor<F:FnOnce()+Send+'static>(f: F) {
784 const STACK_SIZE: usize = 8 * 1024 * 1024; // 8MB
786 struct Sink(Arc<Mutex<Vec<u8>>>);
787 impl Write for Sink {
788 fn write(&mut self, data: &[u8]) -> io::Result<usize> {
789 Write::write(&mut *self.0.lock().unwrap(), data)
791 fn flush(&mut self) -> io::Result<()> { Ok(()) }
794 let data = Arc::new(Mutex::new(Vec::new()));
795 let err = Sink(data.clone());
797 let mut cfg = thread::Builder::new().name("rustc".to_string());
799 // FIXME: Hacks on hacks. If the env is trying to override the stack size
800 // then *don't* set it explicitly.
801 if env::var_os("RUST_MIN_STACK").is_none() {
802 cfg = cfg.stack_size(STACK_SIZE);
805 match cfg.spawn(move || { io::set_panic(box err); f() }).unwrap().join() {
806 Ok(()) => { /* fallthrough */ }
808 // Thread panicked without emitting a fatal diagnostic
809 if !value.is::<diagnostic::FatalError>() {
810 let mut emitter = diagnostic::EmitterWriter::stderr(diagnostic::Auto, None);
812 // a .span_bug or .bug call has already printed what
813 // it wants to print.
814 if !value.is::<diagnostic::ExplicitBug>() {
823 "the compiler unexpectedly panicked. this is a bug.".to_string(),
824 format!("we would appreciate a bug report: {}",
828 emitter.emit(None, ¬e[..], None, diagnostic::Note)
830 if let None = env::var_os("RUST_BACKTRACE") {
831 emitter.emit(None, "run with `RUST_BACKTRACE=1` for a backtrace",
832 None, diagnostic::Note);
835 println!("{}", str::from_utf8(&data.lock().unwrap()).unwrap());
838 // Panic so the process returns a failure code, but don't pollute the
839 // output with some unnecessary panic messages, we've already
840 // printed everything that we needed to.
841 io::set_panic(box io::sink());
847 pub fn diagnostics_registry() -> diagnostics::registry::Registry {
848 use syntax::diagnostics::registry::Registry;
850 let mut all_errors = Vec::new();
851 all_errors.push_all(&rustc::DIAGNOSTICS);
852 all_errors.push_all(&rustc_typeck::DIAGNOSTICS);
853 all_errors.push_all(&rustc_borrowck::DIAGNOSTICS);
854 all_errors.push_all(&rustc_resolve::DIAGNOSTICS);
856 Registry::new(&*all_errors)
860 let result = run(env::args().collect());
861 process::exit(result as i32);