1 // ignore-tidy-filelength
3 use crate::common::{expected_output_path, UI_EXTENSIONS, UI_FIXED, UI_STDERR, UI_STDOUT};
4 use crate::common::{incremental_dir, output_base_dir, output_base_name, output_testname_unique};
5 use crate::common::{Assembly, Incremental, JsDocTest, MirOpt, RunMake, RustdocJson, Ui};
6 use crate::common::{Codegen, CodegenUnits, DebugInfo, Debugger, Rustdoc};
7 use crate::common::{CompareMode, FailMode, PassMode};
8 use crate::common::{Config, TestPaths};
9 use crate::common::{Pretty, RunPassValgrind};
10 use crate::common::{UI_RUN_STDERR, UI_RUN_STDOUT};
11 use crate::errors::{self, Error, ErrorKind};
12 use crate::header::TestProps;
14 use crate::util::get_pointer_width;
15 use crate::util::{logv, PathBufExt};
16 use crate::ColorConfig;
17 use regex::{Captures, Regex};
18 use rustfix::{apply_suggestions, get_suggestions_from_json, Filter};
20 use std::collections::hash_map::DefaultHasher;
21 use std::collections::{HashMap, HashSet, VecDeque};
23 use std::ffi::{OsStr, OsString};
24 use std::fs::{self, create_dir_all, File, OpenOptions};
25 use std::hash::{Hash, Hasher};
26 use std::io::prelude::*;
27 use std::io::{self, BufReader};
28 use std::path::{Path, PathBuf};
29 use std::process::{Child, Command, ExitStatus, Output, Stdio};
33 use lazy_static::lazy_static;
36 use crate::extract_gdb_version;
37 use crate::is_android_gdb_target;
43 fn disable_error_reporting<F: FnOnce() -> R, R>(f: F) -> R {
45 use winapi::um::errhandlingapi::SetErrorMode;
46 use winapi::um::winbase::SEM_NOGPFAULTERRORBOX;
49 static ref LOCK: Mutex<()> = Mutex::new(());
51 // Error mode is a global variable, so lock it so only one thread will change it
52 let _lock = LOCK.lock().unwrap();
54 // Tell Windows to not show any UI on errors (such as terminating abnormally).
55 // This is important for running tests, since some of them use abnormal
56 // termination by design. This mode is inherited by all child processes.
58 let old_mode = SetErrorMode(SEM_NOGPFAULTERRORBOX); // read inherited flags
59 SetErrorMode(old_mode | SEM_NOGPFAULTERRORBOX);
61 SetErrorMode(old_mode);
67 fn disable_error_reporting<F: FnOnce() -> R, R>(f: F) -> R {
71 /// The name of the environment variable that holds dynamic library locations.
72 pub fn dylib_env_var() -> &'static str {
75 } else if cfg!(target_os = "macos") {
77 } else if cfg!(target_os = "haiku") {
84 /// The platform-specific library name
85 pub fn get_lib_name(lib: &str, dylib: bool) -> String {
86 // In some casess (e.g. MUSL), we build a static
87 // library, rather than a dynamic library.
88 // In this case, the only path we can pass
89 // with '--extern-meta' is the '.lib' file
91 return format!("lib{}.rlib", lib);
95 format!("{}.dll", lib)
96 } else if cfg!(target_os = "macos") {
97 format!("lib{}.dylib", lib)
99 format!("lib{}.so", lib)
103 #[derive(Debug, PartialEq)]
110 #[derive(Debug, PartialEq)]
111 pub struct Mismatch {
112 pub line_number: u32,
113 pub lines: Vec<DiffLine>,
117 fn new(line_number: u32) -> Mismatch {
118 Mismatch { line_number, lines: Vec::new() }
122 // Produces a diff between the expected output and actual output.
123 pub fn make_diff(expected: &str, actual: &str, context_size: usize) -> Vec<Mismatch> {
124 let mut line_number = 1;
125 let mut context_queue: VecDeque<&str> = VecDeque::with_capacity(context_size);
126 let mut lines_since_mismatch = context_size + 1;
127 let mut results = Vec::new();
128 let mut mismatch = Mismatch::new(0);
130 for result in diff::lines(expected, actual) {
132 diff::Result::Left(str) => {
133 if lines_since_mismatch >= context_size && lines_since_mismatch > 0 {
134 results.push(mismatch);
135 mismatch = Mismatch::new(line_number - context_queue.len() as u32);
138 while let Some(line) = context_queue.pop_front() {
139 mismatch.lines.push(DiffLine::Context(line.to_owned()));
142 mismatch.lines.push(DiffLine::Expected(str.to_owned()));
144 lines_since_mismatch = 0;
146 diff::Result::Right(str) => {
147 if lines_since_mismatch >= context_size && lines_since_mismatch > 0 {
148 results.push(mismatch);
149 mismatch = Mismatch::new(line_number - context_queue.len() as u32);
152 while let Some(line) = context_queue.pop_front() {
153 mismatch.lines.push(DiffLine::Context(line.to_owned()));
156 mismatch.lines.push(DiffLine::Resulting(str.to_owned()));
157 lines_since_mismatch = 0;
159 diff::Result::Both(str, _) => {
160 if context_queue.len() >= context_size {
161 let _ = context_queue.pop_front();
164 if lines_since_mismatch < context_size {
165 mismatch.lines.push(DiffLine::Context(str.to_owned()));
166 } else if context_size > 0 {
167 context_queue.push_back(str);
171 lines_since_mismatch += 1;
176 results.push(mismatch);
182 fn write_diff(expected: &str, actual: &str, context_size: usize) -> String {
184 let mut output = String::new();
185 let diff_results = make_diff(expected, actual, context_size);
186 for result in diff_results {
187 let mut line_number = result.line_number;
188 for line in result.lines {
190 DiffLine::Expected(e) => {
191 writeln!(output, "-\t{}", e).unwrap();
194 DiffLine::Context(c) => {
195 writeln!(output, "{}\t{}", line_number, c).unwrap();
198 DiffLine::Resulting(r) => {
199 writeln!(output, "+\t{}", r).unwrap();
203 writeln!(output).unwrap();
208 pub fn run(config: Config, testpaths: &TestPaths, revision: Option<&str>) {
209 match &*config.target {
210 "arm-linux-androideabi"
211 | "armv7-linux-androideabi"
212 | "thumbv7neon-linux-androideabi"
213 | "aarch64-linux-android" => {
214 if !config.adb_device_status {
215 panic!("android device not available");
220 // android has its own gdb handling
221 if config.debugger == Some(Debugger::Gdb) && config.gdb.is_none() {
222 panic!("gdb not available but debuginfo gdb debuginfo test requested");
228 // We're going to be dumping a lot of info. Start on a new line.
231 debug!("running {:?}", testpaths.file.display());
232 let mut props = TestProps::from_file(&testpaths.file, revision, &config);
233 if props.incremental {
234 props.incremental_dir = Some(incremental_dir(&config, testpaths));
237 let cx = TestCx { config: &config, props: &props, testpaths, revision };
238 create_dir_all(&cx.output_base_dir()).unwrap();
239 if props.incremental {
240 cx.init_incremental_test();
243 if config.mode == Incremental {
244 // Incremental tests are special because they cannot be run in
246 assert!(!props.revisions.is_empty(), "Incremental tests require revisions.");
247 for revision in &props.revisions {
248 let mut revision_props = TestProps::from_file(&testpaths.file, Some(revision), &config);
249 revision_props.incremental_dir = props.incremental_dir.clone();
250 let rev_cx = TestCx {
252 props: &revision_props,
254 revision: Some(revision),
256 rev_cx.run_revision();
265 pub fn compute_stamp_hash(config: &Config) -> String {
266 let mut hash = DefaultHasher::new();
267 config.stage_id.hash(&mut hash);
268 config.run.hash(&mut hash);
270 match config.debugger {
271 Some(Debugger::Cdb) => {
272 config.cdb.hash(&mut hash);
275 Some(Debugger::Gdb) => {
276 config.gdb.hash(&mut hash);
277 env::var_os("PATH").hash(&mut hash);
278 env::var_os("PYTHONPATH").hash(&mut hash);
281 Some(Debugger::Lldb) => {
282 config.lldb_python.hash(&mut hash);
283 config.lldb_python_dir.hash(&mut hash);
284 env::var_os("PATH").hash(&mut hash);
285 env::var_os("PYTHONPATH").hash(&mut hash);
291 if let Ui = config.mode {
292 config.force_pass_mode.hash(&mut hash);
295 format!("{:x}", hash.finish())
298 #[derive(Copy, Clone)]
299 struct TestCx<'test> {
300 config: &'test Config,
301 props: &'test TestProps,
302 testpaths: &'test TestPaths,
303 revision: Option<&'test str>,
306 struct DebuggerCommands {
307 commands: Vec<String>,
308 check_lines: Vec<String>,
309 breakpoint_lines: Vec<usize>,
322 /// Will this test be executed? Should we use `make_exe_name`?
323 #[derive(Copy, Clone, PartialEq)]
330 /// Should `--emit metadata` be used?
331 #[derive(Copy, Clone)]
337 impl<'test> TestCx<'test> {
338 /// Code executed for each revision in turn (or, if there are no
339 /// revisions, exactly once, with revision == None).
340 fn run_revision(&self) {
341 if self.props.should_ice {
342 if self.config.mode != Incremental {
343 self.fatal("cannot use should-ice in a test that is not cfail");
346 match self.config.mode {
347 RunPassValgrind => self.run_valgrind_test(),
348 Pretty => self.run_pretty_test(),
349 DebugInfo => self.run_debuginfo_test(),
350 Codegen => self.run_codegen_test(),
351 Rustdoc => self.run_rustdoc_test(),
352 RustdocJson => self.run_rustdoc_json_test(),
353 CodegenUnits => self.run_codegen_units_test(),
354 Incremental => self.run_incremental_test(),
355 RunMake => self.run_rmake_test(),
356 Ui => self.run_ui_test(),
357 MirOpt => self.run_mir_opt_test(),
358 Assembly => self.run_assembly_test(),
359 JsDocTest => self.run_js_doc_test(),
363 fn pass_mode(&self) -> Option<PassMode> {
364 self.props.pass_mode(self.config)
367 fn should_run(&self, pm: Option<PassMode>) -> WillExecute {
368 let test_should_run = match self.config.mode {
369 Ui if pm == Some(PassMode::Run) || self.props.fail_mode == Some(FailMode::Run) => true,
370 MirOpt if pm == Some(PassMode::Run) => true,
371 Ui | MirOpt => false,
372 mode => panic!("unimplemented for mode {:?}", mode),
374 if test_should_run { self.run_if_enabled() } else { WillExecute::No }
377 fn run_if_enabled(&self) -> WillExecute {
378 if self.config.run_enabled() { WillExecute::Yes } else { WillExecute::Disabled }
381 fn should_run_successfully(&self, pm: Option<PassMode>) -> bool {
382 match self.config.mode {
383 Ui | MirOpt => pm == Some(PassMode::Run),
384 mode => panic!("unimplemented for mode {:?}", mode),
388 fn should_compile_successfully(&self, pm: Option<PassMode>) -> bool {
389 match self.config.mode {
391 Ui => pm.is_some() || self.props.fail_mode > Some(FailMode::Build),
394 self.revision.expect("incremental tests require a list of revisions");
395 if revision.starts_with("rpass") || revision.starts_with("rfail") {
397 } else if revision.starts_with("cfail") {
398 // FIXME: would be nice if incremental revs could start with "cpass"
401 panic!("revision name must begin with rpass, rfail, or cfail");
404 mode => panic!("unimplemented for mode {:?}", mode),
408 fn check_if_test_should_compile(&self, proc_res: &ProcRes, pm: Option<PassMode>) {
409 if self.should_compile_successfully(pm) {
410 if !proc_res.status.success() {
411 self.fatal_proc_rec("test compilation failed although it shouldn't!", proc_res);
414 if proc_res.status.success() {
416 &format!("{} test compiled successfully!", self.config.mode)[..],
421 self.check_correct_failure_status(proc_res);
425 fn run_cfail_test(&self) {
426 let pm = self.pass_mode();
427 let proc_res = self.compile_test(WillExecute::No, self.should_emit_metadata(pm));
428 self.check_if_test_should_compile(&proc_res, pm);
429 self.check_no_compiler_crash(&proc_res, self.props.should_ice);
431 let output_to_check = self.get_output(&proc_res);
432 let expected_errors = errors::load_errors(&self.testpaths.file, self.revision);
433 if !expected_errors.is_empty() {
434 if !self.props.error_patterns.is_empty() {
435 self.fatal("both error pattern and expected errors specified");
437 self.check_expected_errors(expected_errors, &proc_res);
439 self.check_error_patterns(&output_to_check, &proc_res, pm);
441 if self.props.should_ice {
442 match proc_res.status.code() {
444 _ => self.fatal("expected ICE"),
448 self.check_forbid_output(&output_to_check, &proc_res);
451 fn run_rfail_test(&self) {
452 let pm = self.pass_mode();
453 let should_run = self.run_if_enabled();
454 let proc_res = self.compile_test(should_run, self.should_emit_metadata(pm));
456 if !proc_res.status.success() {
457 self.fatal_proc_rec("compilation failed!", &proc_res);
460 if let WillExecute::Disabled = should_run {
464 let proc_res = self.exec_compiled_test();
466 // The value our Makefile configures valgrind to return on failure
467 const VALGRIND_ERR: i32 = 100;
468 if proc_res.status.code() == Some(VALGRIND_ERR) {
469 self.fatal_proc_rec("run-fail test isn't valgrind-clean!", &proc_res);
472 let output_to_check = self.get_output(&proc_res);
473 self.check_correct_failure_status(&proc_res);
474 self.check_error_patterns(&output_to_check, &proc_res, pm);
477 fn get_output(&self, proc_res: &ProcRes) -> String {
478 if self.props.check_stdout {
479 format!("{}{}", proc_res.stdout, proc_res.stderr)
481 proc_res.stderr.clone()
485 fn check_correct_failure_status(&self, proc_res: &ProcRes) {
486 let expected_status = Some(self.props.failure_status);
487 let received_status = proc_res.status.code();
489 if expected_status != received_status {
492 "Error: expected failure status ({:?}) but received status {:?}.",
493 expected_status, received_status
500 fn run_rpass_test(&self) {
501 let emit_metadata = self.should_emit_metadata(self.pass_mode());
502 let should_run = self.run_if_enabled();
503 let proc_res = self.compile_test(should_run, emit_metadata);
505 if !proc_res.status.success() {
506 self.fatal_proc_rec("compilation failed!", &proc_res);
509 if let WillExecute::Disabled = should_run {
513 // FIXME(#41968): Move this check to tidy?
514 let expected_errors = errors::load_errors(&self.testpaths.file, self.revision);
516 expected_errors.is_empty(),
517 "run-pass tests with expected warnings should be moved to ui/"
520 let proc_res = self.exec_compiled_test();
521 if !proc_res.status.success() {
522 self.fatal_proc_rec("test run failed!", &proc_res);
526 fn run_valgrind_test(&self) {
527 assert!(self.revision.is_none(), "revisions not relevant here");
529 if self.config.valgrind_path.is_none() {
530 assert!(!self.config.force_valgrind);
531 return self.run_rpass_test();
534 let should_run = self.run_if_enabled();
535 let mut proc_res = self.compile_test(should_run, EmitMetadata::No);
537 if !proc_res.status.success() {
538 self.fatal_proc_rec("compilation failed!", &proc_res);
541 if let WillExecute::Disabled = should_run {
545 let mut new_config = self.config.clone();
546 new_config.runtool = new_config.valgrind_path.clone();
547 let new_cx = TestCx { config: &new_config, ..*self };
548 proc_res = new_cx.exec_compiled_test();
550 if !proc_res.status.success() {
551 self.fatal_proc_rec("test run failed!", &proc_res);
555 fn run_pretty_test(&self) {
556 if self.props.pp_exact.is_some() {
557 logv(self.config, "testing for exact pretty-printing".to_owned());
559 logv(self.config, "testing for converging pretty-printing".to_owned());
562 let rounds = match self.props.pp_exact {
567 let src = fs::read_to_string(&self.testpaths.file).unwrap();
568 let mut srcs = vec![src];
571 while round < rounds {
574 format!("pretty-printing round {} revision {:?}", round, self.revision),
577 if round == 0 { ReadFrom::Path } else { ReadFrom::Stdin(srcs[round].to_owned()) };
579 let proc_res = self.print_source(read_from, &self.props.pretty_mode);
580 if !proc_res.status.success() {
583 "pretty-printing failed in round {} revision {:?}",
590 let ProcRes { stdout, .. } = proc_res;
595 let mut expected = match self.props.pp_exact {
597 let filepath = self.testpaths.file.parent().unwrap().join(file);
598 fs::read_to_string(&filepath).unwrap()
600 None => srcs[srcs.len() - 2].clone(),
602 let mut actual = srcs[srcs.len() - 1].clone();
604 if self.props.pp_exact.is_some() {
605 // Now we have to care about line endings
606 let cr = "\r".to_owned();
607 actual = actual.replace(&cr, "");
608 expected = expected.replace(&cr, "");
611 self.compare_source(&expected, &actual);
613 // If we're only making sure that the output matches then just stop here
614 if self.props.pretty_compare_only {
618 // Finally, let's make sure it actually appears to remain valid code
619 let proc_res = self.typecheck_source(actual);
620 if !proc_res.status.success() {
621 self.fatal_proc_rec("pretty-printed source does not typecheck", &proc_res);
624 if !self.props.pretty_expanded {
628 // additionally, run `-Zunpretty=expanded` and try to build it.
629 let proc_res = self.print_source(ReadFrom::Path, "expanded");
630 if !proc_res.status.success() {
631 self.fatal_proc_rec("pretty-printing (expanded) failed", &proc_res);
634 let ProcRes { stdout: expanded_src, .. } = proc_res;
635 let proc_res = self.typecheck_source(expanded_src);
636 if !proc_res.status.success() {
637 self.fatal_proc_rec("pretty-printed source (expanded) does not typecheck", &proc_res);
641 fn print_source(&self, read_from: ReadFrom, pretty_type: &str) -> ProcRes {
642 let aux_dir = self.aux_output_dir_name();
643 let input: &str = match read_from {
644 ReadFrom::Stdin(_) => "-",
645 ReadFrom::Path => self.testpaths.file.to_str().unwrap(),
648 let mut rustc = Command::new(&self.config.rustc_path);
651 .args(&["-Z", &format!("unpretty={}", pretty_type)])
652 .args(&["--target", &self.config.target])
655 .args(&self.props.compile_flags)
656 .envs(self.props.rustc_env.clone());
657 self.maybe_add_external_args(
659 self.split_maybe_args(&self.config.target_rustcflags),
662 let src = match read_from {
663 ReadFrom::Stdin(src) => Some(src),
664 ReadFrom::Path => None,
667 self.compose_and_run(
669 self.config.compile_lib_path.to_str().unwrap(),
670 Some(aux_dir.to_str().unwrap()),
675 fn compare_source(&self, expected: &str, actual: &str) {
676 if expected != actual {
678 "pretty-printed source does not match expected source\n\
680 ------------------------------------------\n\
682 ------------------------------------------\n\
684 ------------------------------------------\n\
686 ------------------------------------------\n\
688 ------------------------------------------\n\
692 write_diff(expected, actual, 3),
697 fn set_revision_flags(&self, cmd: &mut Command) {
698 if let Some(revision) = self.revision {
699 // Normalize revisions to be lowercase and replace `-`s with `_`s.
700 // Otherwise the `--cfg` flag is not valid.
701 let normalized_revision = revision.to_lowercase().replace("-", "_");
702 cmd.args(&["--cfg", &normalized_revision]);
706 fn typecheck_source(&self, src: String) -> ProcRes {
707 let mut rustc = Command::new(&self.config.rustc_path);
709 let out_dir = self.output_base_name().with_extension("pretty-out");
710 let _ = fs::remove_dir_all(&out_dir);
711 create_dir_all(&out_dir).unwrap();
713 let target = if self.props.force_host { &*self.config.host } else { &*self.config.target };
715 let aux_dir = self.aux_output_dir_name();
722 .arg(&format!("--target={}", target))
724 .arg(&self.config.build_base)
727 self.set_revision_flags(&mut rustc);
728 self.maybe_add_external_args(
730 self.split_maybe_args(&self.config.target_rustcflags),
732 rustc.args(&self.props.compile_flags);
734 self.compose_and_run_compiler(rustc, Some(src))
737 fn run_debuginfo_test(&self) {
738 match self.config.debugger.unwrap() {
739 Debugger::Cdb => self.run_debuginfo_cdb_test(),
740 Debugger::Gdb => self.run_debuginfo_gdb_test(),
741 Debugger::Lldb => self.run_debuginfo_lldb_test(),
745 fn run_debuginfo_cdb_test(&self) {
746 assert!(self.revision.is_none(), "revisions not relevant here");
748 let config = Config {
749 target_rustcflags: self.cleanup_debug_info_options(&self.config.target_rustcflags),
750 host_rustcflags: self.cleanup_debug_info_options(&self.config.host_rustcflags),
751 ..self.config.clone()
754 let test_cx = TestCx { config: &config, ..*self };
756 test_cx.run_debuginfo_cdb_test_no_opt();
759 fn run_debuginfo_cdb_test_no_opt(&self) {
760 // compile test file (it should have 'compile-flags:-g' in the header)
761 let should_run = self.run_if_enabled();
762 let compile_result = self.compile_test(should_run, EmitMetadata::No);
763 if !compile_result.status.success() {
764 self.fatal_proc_rec("compilation failed!", &compile_result);
766 if let WillExecute::Disabled = should_run {
770 let exe_file = self.make_exe_name();
773 static PREFIXES: &[&str] = &["cdb", "cdbg"];
774 // No "native rust support" variation for CDB yet.
778 // Parse debugger commands etc from test files
779 let DebuggerCommands { commands, check_lines, breakpoint_lines, .. } =
780 self.parse_debugger_commands(prefixes);
782 // https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/debugger-commands
783 let mut script_str = String::with_capacity(2048);
784 script_str.push_str("version\n"); // List CDB (and more) version info in test output
785 script_str.push_str(".nvlist\n"); // List loaded `*.natvis` files, bulk of custom MSVC debug
787 // If a .js file exists next to the source file being tested, then this is a JavaScript
788 // debugging extension that needs to be loaded.
789 let mut js_extension = self.testpaths.file.clone();
790 js_extension.set_extension("cdb.js");
791 if js_extension.exists() {
792 script_str.push_str(&format!(".scriptload \"{}\"\n", js_extension.to_string_lossy()));
795 // Set breakpoints on every line that contains the string "#break"
796 let source_file_name = self.testpaths.file.file_name().unwrap().to_string_lossy();
797 for line in &breakpoint_lines {
798 script_str.push_str(&format!("bp `{}:{}`\n", source_file_name, line));
801 // Append the other `cdb-command:`s
802 for line in &commands {
803 script_str.push_str(line);
804 script_str.push_str("\n");
807 script_str.push_str("\nqq\n"); // Quit the debugger (including remote debugger, if any)
809 // Write the script into a file
810 debug!("script_str = {}", script_str);
811 self.dump_output_file(&script_str, "debugger.script");
812 let debugger_script = self.make_out_name("debugger.script");
814 let cdb_path = &self.config.cdb.as_ref().unwrap();
815 let mut cdb = Command::new(cdb_path);
816 cdb.arg("-lines") // Enable source line debugging.
818 .arg(&debugger_script)
821 let debugger_run_result = self.compose_and_run(
823 self.config.run_lib_path.to_str().unwrap(),
828 if !debugger_run_result.status.success() {
829 self.fatal_proc_rec("Error while running CDB", &debugger_run_result);
832 self.check_debugger_output(&debugger_run_result, &check_lines);
835 fn run_debuginfo_gdb_test(&self) {
836 assert!(self.revision.is_none(), "revisions not relevant here");
838 let config = Config {
839 target_rustcflags: self.cleanup_debug_info_options(&self.config.target_rustcflags),
840 host_rustcflags: self.cleanup_debug_info_options(&self.config.host_rustcflags),
841 ..self.config.clone()
844 let test_cx = TestCx { config: &config, ..*self };
846 test_cx.run_debuginfo_gdb_test_no_opt();
849 fn run_debuginfo_gdb_test_no_opt(&self) {
850 let prefixes = if self.config.gdb_native_rust {
852 static PREFIXES: &[&str] = &["gdb", "gdbr"];
853 println!("NOTE: compiletest thinks it is using GDB with native rust support");
857 static PREFIXES: &[&str] = &["gdb", "gdbg"];
858 println!("NOTE: compiletest thinks it is using GDB without native rust support");
862 let DebuggerCommands { commands, check_lines, breakpoint_lines } =
863 self.parse_debugger_commands(prefixes);
864 let mut cmds = commands.join("\n");
866 // compile test file (it should have 'compile-flags:-g' in the header)
867 let should_run = self.run_if_enabled();
868 let compiler_run_result = self.compile_test(should_run, EmitMetadata::No);
869 if !compiler_run_result.status.success() {
870 self.fatal_proc_rec("compilation failed!", &compiler_run_result);
872 if let WillExecute::Disabled = should_run {
876 let exe_file = self.make_exe_name();
878 let debugger_run_result;
879 if is_android_gdb_target(&self.config.target) {
880 cmds = cmds.replace("run", "continue");
882 let tool_path = match self.config.android_cross_path.to_str() {
883 Some(x) => x.to_owned(),
884 None => self.fatal("cannot find android cross path"),
887 // write debugger script
888 let mut script_str = String::with_capacity(2048);
889 script_str.push_str(&format!("set charset {}\n", Self::charset()));
890 script_str.push_str(&format!("set sysroot {}\n", tool_path));
891 script_str.push_str(&format!("file {}\n", exe_file.to_str().unwrap()));
892 script_str.push_str("target remote :5039\n");
893 script_str.push_str(&format!(
894 "set solib-search-path \
895 ./{}/stage2/lib/rustlib/{}/lib/\n",
896 self.config.host, self.config.target
898 for line in &breakpoint_lines {
902 self.testpaths.file.file_name().unwrap().to_string_lossy(),
907 script_str.push_str(&cmds);
908 script_str.push_str("\nquit\n");
910 debug!("script_str = {}", script_str);
911 self.dump_output_file(&script_str, "debugger.script");
913 let adb_path = &self.config.adb_path;
915 Command::new(adb_path)
918 .arg(&self.config.adb_test_dir)
920 .unwrap_or_else(|_| panic!("failed to exec `{:?}`", adb_path));
922 Command::new(adb_path)
923 .args(&["forward", "tcp:5039", "tcp:5039"])
925 .unwrap_or_else(|_| panic!("failed to exec `{:?}`", adb_path));
927 let adb_arg = format!(
928 "export LD_LIBRARY_PATH={}; \
929 gdbserver{} :5039 {}/{}",
930 self.config.adb_test_dir.clone(),
931 if self.config.target.contains("aarch64") { "64" } else { "" },
932 self.config.adb_test_dir.clone(),
933 exe_file.file_name().unwrap().to_str().unwrap()
936 debug!("adb arg: {}", adb_arg);
937 let mut adb = Command::new(adb_path)
938 .args(&["shell", &adb_arg])
939 .stdout(Stdio::piped())
940 .stderr(Stdio::inherit())
942 .unwrap_or_else(|_| panic!("failed to exec `{:?}`", adb_path));
944 // Wait for the gdbserver to print out "Listening on port ..."
945 // at which point we know that it's started and then we can
946 // execute the debugger below.
947 let mut stdout = BufReader::new(adb.stdout.take().unwrap());
948 let mut line = String::new();
951 stdout.read_line(&mut line).unwrap();
952 if line.starts_with("Listening on port 5039") {
958 let mut debugger_script = OsString::from("-command=");
959 debugger_script.push(self.make_out_name("debugger.script"));
960 let debugger_opts: &[&OsStr] =
961 &["-quiet".as_ref(), "-batch".as_ref(), "-nx".as_ref(), &debugger_script];
963 let gdb_path = self.config.gdb.as_ref().unwrap();
964 let Output { status, stdout, stderr } = Command::new(&gdb_path)
967 .unwrap_or_else(|_| panic!("failed to exec `{:?}`", gdb_path));
969 let mut gdb = Command::new(&format!("{}-gdb", self.config.target));
970 gdb.args(debugger_opts);
971 let cmdline = self.make_cmdline(&gdb, "");
972 logv(self.config, format!("executing {}", cmdline));
976 debugger_run_result = ProcRes {
978 stdout: String::from_utf8(stdout).unwrap(),
979 stderr: String::from_utf8(stderr).unwrap(),
982 if adb.kill().is_err() {
983 println!("Adb process is already finished.");
987 self.config.find_rust_src_root().expect("Could not find Rust source root");
988 let rust_pp_module_rel_path = Path::new("./src/etc");
989 let rust_pp_module_abs_path =
990 rust_src_root.join(rust_pp_module_rel_path).to_str().unwrap().to_owned();
991 // write debugger script
992 let mut script_str = String::with_capacity(2048);
993 script_str.push_str(&format!("set charset {}\n", Self::charset()));
994 script_str.push_str("show version\n");
996 match self.config.gdb_version {
998 println!("NOTE: compiletest thinks it is using GDB version {}", version);
1000 if version > extract_gdb_version("7.4").unwrap() {
1001 // Add the directory containing the pretty printers to
1002 // GDB's script auto loading safe path
1003 script_str.push_str(&format!(
1004 "add-auto-load-safe-path {}\n",
1005 rust_pp_module_abs_path.replace(r"\", r"\\")
1011 "NOTE: compiletest does not know which version of \
1017 // The following line actually doesn't have to do anything with
1018 // pretty printing, it just tells GDB to print values on one line:
1019 script_str.push_str("set print pretty off\n");
1021 // Add the pretty printer directory to GDB's source-file search path
1023 .push_str(&format!("directory {}\n", rust_pp_module_abs_path.replace(r"\", r"\\")));
1025 // Load the target executable
1027 .push_str(&format!("file {}\n", exe_file.to_str().unwrap().replace(r"\", r"\\")));
1029 // Force GDB to print values in the Rust format.
1030 if self.config.gdb_native_rust {
1031 script_str.push_str("set language rust\n");
1034 // Add line breakpoints
1035 for line in &breakpoint_lines {
1036 script_str.push_str(&format!(
1038 self.testpaths.file.file_name().unwrap().to_string_lossy(),
1043 script_str.push_str(&cmds);
1044 script_str.push_str("\nquit\n");
1046 debug!("script_str = {}", script_str);
1047 self.dump_output_file(&script_str, "debugger.script");
1049 let mut debugger_script = OsString::from("-command=");
1050 debugger_script.push(self.make_out_name("debugger.script"));
1052 let debugger_opts: &[&OsStr] =
1053 &["-quiet".as_ref(), "-batch".as_ref(), "-nx".as_ref(), &debugger_script];
1055 let mut gdb = Command::new(self.config.gdb.as_ref().unwrap());
1056 gdb.args(debugger_opts).env("PYTHONPATH", rust_pp_module_abs_path);
1058 debugger_run_result =
1059 self.compose_and_run(gdb, self.config.run_lib_path.to_str().unwrap(), None, None);
1062 if !debugger_run_result.status.success() {
1063 self.fatal_proc_rec("gdb failed to execute", &debugger_run_result);
1066 self.check_debugger_output(&debugger_run_result, &check_lines);
1069 fn run_debuginfo_lldb_test(&self) {
1070 assert!(self.revision.is_none(), "revisions not relevant here");
1072 if self.config.lldb_python_dir.is_none() {
1073 self.fatal("Can't run LLDB test because LLDB's python path is not set.");
1076 let config = Config {
1077 target_rustcflags: self.cleanup_debug_info_options(&self.config.target_rustcflags),
1078 host_rustcflags: self.cleanup_debug_info_options(&self.config.host_rustcflags),
1079 ..self.config.clone()
1082 let test_cx = TestCx { config: &config, ..*self };
1084 test_cx.run_debuginfo_lldb_test_no_opt();
1087 fn run_debuginfo_lldb_test_no_opt(&self) {
1088 // compile test file (it should have 'compile-flags:-g' in the header)
1089 let should_run = self.run_if_enabled();
1090 let compile_result = self.compile_test(should_run, EmitMetadata::No);
1091 if !compile_result.status.success() {
1092 self.fatal_proc_rec("compilation failed!", &compile_result);
1094 if let WillExecute::Disabled = should_run {
1098 let exe_file = self.make_exe_name();
1100 match self.config.lldb_version {
1101 Some(ref version) => {
1102 println!("NOTE: compiletest thinks it is using LLDB version {}", version);
1106 "NOTE: compiletest does not know which version of \
1112 let prefixes = if self.config.lldb_native_rust {
1113 static PREFIXES: &[&str] = &["lldb", "lldbr"];
1114 println!("NOTE: compiletest thinks it is using LLDB with native rust support");
1117 static PREFIXES: &[&str] = &["lldb", "lldbg"];
1118 println!("NOTE: compiletest thinks it is using LLDB without native rust support");
1122 // Parse debugger commands etc from test files
1123 let DebuggerCommands { commands, check_lines, breakpoint_lines, .. } =
1124 self.parse_debugger_commands(prefixes);
1126 // Write debugger script:
1127 // We don't want to hang when calling `quit` while the process is still running
1128 let mut script_str = String::from("settings set auto-confirm true\n");
1130 // Make LLDB emit its version, so we have it documented in the test output
1131 script_str.push_str("version\n");
1133 // Switch LLDB into "Rust mode"
1135 self.config.find_rust_src_root().expect("Could not find Rust source root");
1136 let rust_pp_module_rel_path = Path::new("./src/etc/lldb_lookup.py");
1137 let rust_pp_module_abs_path =
1138 rust_src_root.join(rust_pp_module_rel_path).to_str().unwrap().to_owned();
1140 let rust_type_regexes = vec![
1141 "^(alloc::([a-z_]+::)+)String$",
1143 "^&(mut )?\\[.+\\]$",
1144 "^(std::ffi::([a-z_]+::)+)OsString$",
1145 "^(alloc::([a-z_]+::)+)Vec<.+>$",
1146 "^(alloc::([a-z_]+::)+)VecDeque<.+>$",
1147 "^(alloc::([a-z_]+::)+)BTreeSet<.+>$",
1148 "^(alloc::([a-z_]+::)+)BTreeMap<.+>$",
1149 "^(std::collections::([a-z_]+::)+)HashMap<.+>$",
1150 "^(std::collections::([a-z_]+::)+)HashSet<.+>$",
1151 "^(alloc::([a-z_]+::)+)Rc<.+>$",
1152 "^(alloc::([a-z_]+::)+)Arc<.+>$",
1153 "^(core::([a-z_]+::)+)Cell<.+>$",
1154 "^(core::([a-z_]+::)+)Ref<.+>$",
1155 "^(core::([a-z_]+::)+)RefMut<.+>$",
1156 "^(core::([a-z_]+::)+)RefCell<.+>$",
1160 .push_str(&format!("command script import {}\n", &rust_pp_module_abs_path[..])[..]);
1161 script_str.push_str("type synthetic add -l lldb_lookup.synthetic_lookup -x '.*' ");
1162 script_str.push_str("--category Rust\n");
1163 for type_regex in rust_type_regexes {
1164 script_str.push_str("type summary add -F lldb_lookup.summary_lookup -e -x -h ");
1165 script_str.push_str(&format!("'{}' ", type_regex));
1166 script_str.push_str("--category Rust\n");
1168 script_str.push_str("type category enable Rust\n");
1170 // Set breakpoints on every line that contains the string "#break"
1171 let source_file_name = self.testpaths.file.file_name().unwrap().to_string_lossy();
1172 for line in &breakpoint_lines {
1173 script_str.push_str(&format!(
1174 "breakpoint set --file '{}' --line {}\n",
1175 source_file_name, line
1179 // Append the other commands
1180 for line in &commands {
1181 script_str.push_str(line);
1182 script_str.push_str("\n");
1185 // Finally, quit the debugger
1186 script_str.push_str("\nquit\n");
1188 // Write the script into a file
1189 debug!("script_str = {}", script_str);
1190 self.dump_output_file(&script_str, "debugger.script");
1191 let debugger_script = self.make_out_name("debugger.script");
1193 // Let LLDB execute the script via lldb_batchmode.py
1194 let debugger_run_result = self.run_lldb(&exe_file, &debugger_script, &rust_src_root);
1196 if !debugger_run_result.status.success() {
1197 self.fatal_proc_rec("Error while running LLDB", &debugger_run_result);
1200 self.check_debugger_output(&debugger_run_result, &check_lines);
1205 test_executable: &Path,
1206 debugger_script: &Path,
1207 rust_src_root: &Path,
1209 // Prepare the lldb_batchmode which executes the debugger script
1210 let lldb_script_path = rust_src_root.join("src/etc/lldb_batchmode.py");
1212 Command::new(&self.config.lldb_python)
1213 .arg(&lldb_script_path)
1214 .arg(test_executable)
1215 .arg(debugger_script)
1216 .env("PYTHONUNBUFFERED", "1") // Help debugging #78665
1217 .env("PYTHONPATH", self.config.lldb_python_dir.as_ref().unwrap()),
1221 fn cmd2procres(&self, cmd: &mut Command) -> ProcRes {
1222 let (status, out, err) = match cmd.output() {
1223 Ok(Output { status, stdout, stderr }) => {
1224 (status, String::from_utf8(stdout).unwrap(), String::from_utf8(stderr).unwrap())
1226 Err(e) => self.fatal(&format!(
1227 "Failed to setup Python process for \
1233 self.dump_output(&out, &err);
1234 ProcRes { status, stdout: out, stderr: err, cmdline: format!("{:?}", cmd) }
1237 fn parse_debugger_commands(&self, debugger_prefixes: &[&str]) -> DebuggerCommands {
1238 let directives = debugger_prefixes
1240 .map(|prefix| (format!("{}-command", prefix), format!("{}-check", prefix)))
1241 .collect::<Vec<_>>();
1243 let mut breakpoint_lines = vec![];
1244 let mut commands = vec![];
1245 let mut check_lines = vec![];
1246 let mut counter = 1;
1247 let reader = BufReader::new(File::open(&self.testpaths.file).unwrap());
1248 for line in reader.lines() {
1252 if line.starts_with("//") { line[2..].trim_start() } else { line.as_str() };
1254 if line.contains("#break") {
1255 breakpoint_lines.push(counter);
1258 for &(ref command_directive, ref check_directive) in &directives {
1260 .parse_name_value_directive(&line, command_directive)
1261 .map(|cmd| commands.push(cmd));
1264 .parse_name_value_directive(&line, check_directive)
1265 .map(|cmd| check_lines.push(cmd));
1268 Err(e) => self.fatal(&format!("Error while parsing debugger commands: {}", e)),
1273 DebuggerCommands { commands, check_lines, breakpoint_lines }
1276 fn cleanup_debug_info_options(&self, options: &Option<String>) -> Option<String> {
1277 if options.is_none() {
1281 // Remove options that are either unwanted (-O) or may lead to duplicates due to RUSTFLAGS.
1282 let options_to_remove = ["-O".to_owned(), "-g".to_owned(), "--debuginfo".to_owned()];
1283 let new_options = self
1284 .split_maybe_args(options)
1286 .filter(|x| !options_to_remove.contains(x))
1287 .collect::<Vec<String>>();
1289 Some(new_options.join(" "))
1292 fn maybe_add_external_args(&self, cmd: &mut Command, args: Vec<String>) {
1293 // Filter out the arguments that should not be added by runtest here.
1295 // Notable use-cases are: do not add our optimisation flag if
1296 // `compile-flags: -Copt-level=x` and similar for debug-info level as well.
1297 const OPT_FLAGS: &[&str] = &["-O", "-Copt-level=", /*-C<space>*/ "opt-level="];
1298 const DEBUG_FLAGS: &[&str] = &["-g", "-Cdebuginfo=", /*-C<space>*/ "debuginfo="];
1300 // FIXME: ideally we would "just" check the `cmd` itself, but it does not allow inspecting
1301 // its arguments. They need to be collected separately. For now I cannot be bothered to
1302 // implement this the "right" way.
1304 self.props.compile_flags.iter().any(|arg| OPT_FLAGS.iter().any(|f| arg.starts_with(f)));
1305 let have_debug_flag = self
1309 .any(|arg| DEBUG_FLAGS.iter().any(|f| arg.starts_with(f)));
1312 if OPT_FLAGS.iter().any(|f| arg.starts_with(f)) && have_opt_flag {
1315 if DEBUG_FLAGS.iter().any(|f| arg.starts_with(f)) && have_debug_flag {
1322 fn check_debugger_output(&self, debugger_run_result: &ProcRes, check_lines: &[String]) {
1323 let num_check_lines = check_lines.len();
1325 let mut check_line_index = 0;
1326 for line in debugger_run_result.stdout.lines() {
1327 if check_line_index >= num_check_lines {
1331 if check_single_line(line, &(check_lines[check_line_index])[..]) {
1332 check_line_index += 1;
1335 if check_line_index != num_check_lines && num_check_lines > 0 {
1336 self.fatal_proc_rec(
1337 &format!("line not found in debugger output: {}", check_lines[check_line_index]),
1338 debugger_run_result,
1342 fn check_single_line(line: &str, check_line: &str) -> bool {
1343 // Allow check lines to leave parts unspecified (e.g., uninitialized
1344 // bits in the wrong case of an enum) with the notation "[...]".
1345 let line = line.trim();
1346 let check_line = check_line.trim();
1347 let can_start_anywhere = check_line.starts_with("[...]");
1348 let can_end_anywhere = check_line.ends_with("[...]");
1350 let check_fragments: Vec<&str> =
1351 check_line.split("[...]").filter(|frag| !frag.is_empty()).collect();
1352 if check_fragments.is_empty() {
1356 let (mut rest, first_fragment) = if can_start_anywhere {
1357 match line.find(check_fragments[0]) {
1358 Some(pos) => (&line[pos + check_fragments[0].len()..], 1),
1359 None => return false,
1365 for current_fragment in &check_fragments[first_fragment..] {
1366 match rest.find(current_fragment) {
1368 rest = &rest[pos + current_fragment.len()..];
1370 None => return false,
1374 if !can_end_anywhere && !rest.is_empty() {
1382 fn check_error_patterns(
1384 output_to_check: &str,
1386 pm: Option<PassMode>,
1388 debug!("check_error_patterns");
1389 if self.props.error_patterns.is_empty() {
1394 self.fatal(&format!(
1395 "no error pattern specified in {:?}",
1396 self.testpaths.file.display()
1401 let mut missing_patterns: Vec<String> = Vec::new();
1403 for pattern in &self.props.error_patterns {
1404 if output_to_check.contains(pattern.trim()) {
1405 debug!("found error pattern {}", pattern);
1407 missing_patterns.push(pattern.to_string());
1411 if missing_patterns.is_empty() {
1415 if missing_patterns.len() == 1 {
1416 self.fatal_proc_rec(
1417 &format!("error pattern '{}' not found!", missing_patterns[0]),
1421 for pattern in missing_patterns {
1422 self.error(&format!("error pattern '{}' not found!", pattern));
1424 self.fatal_proc_rec("multiple error patterns not found", proc_res);
1428 fn check_no_compiler_crash(&self, proc_res: &ProcRes, should_ice: bool) {
1429 match proc_res.status.code() {
1430 Some(101) if !should_ice => {
1431 self.fatal_proc_rec("compiler encountered internal error", proc_res)
1433 None => self.fatal_proc_rec("compiler terminated by signal", proc_res),
1438 fn check_forbid_output(&self, output_to_check: &str, proc_res: &ProcRes) {
1439 for pat in &self.props.forbid_output {
1440 if output_to_check.contains(pat) {
1441 self.fatal_proc_rec("forbidden pattern found in compiler output", proc_res);
1446 fn check_expected_errors(&self, expected_errors: Vec<errors::Error>, proc_res: &ProcRes) {
1448 "check_expected_errors: expected_errors={:?} proc_res.status={:?}",
1449 expected_errors, proc_res.status
1451 if proc_res.status.success()
1452 && expected_errors.iter().any(|x| x.kind == Some(ErrorKind::Error))
1454 self.fatal_proc_rec("process did not return an error status", proc_res);
1457 // On Windows, keep all '\' path separators to match the paths reported in the JSON output
1458 // from the compiler
1459 let os_file_name = self.testpaths.file.display().to_string();
1461 // on windows, translate all '\' path separators to '/'
1462 let file_name = format!("{}", self.testpaths.file.display()).replace(r"\", "/");
1464 // If the testcase being checked contains at least one expected "help"
1465 // message, then we'll ensure that all "help" messages are expected.
1466 // Otherwise, all "help" messages reported by the compiler will be ignored.
1467 // This logic also applies to "note" messages.
1468 let expect_help = expected_errors.iter().any(|ee| ee.kind == Some(ErrorKind::Help));
1469 let expect_note = expected_errors.iter().any(|ee| ee.kind == Some(ErrorKind::Note));
1471 // Parse the JSON output from the compiler and extract out the messages.
1472 let actual_errors = json::parse_output(&os_file_name, &proc_res.stderr, proc_res);
1473 let mut unexpected = Vec::new();
1474 let mut found = vec![false; expected_errors.len()];
1475 for actual_error in &actual_errors {
1477 expected_errors.iter().enumerate().position(|(index, expected_error)| {
1479 && actual_error.line_num == expected_error.line_num
1480 && (expected_error.kind.is_none()
1481 || actual_error.kind == expected_error.kind)
1482 && actual_error.msg.contains(&expected_error.msg)
1487 // found a match, everybody is happy
1488 assert!(!found[index]);
1489 found[index] = true;
1493 if self.is_unexpected_compiler_message(actual_error, expect_help, expect_note) {
1494 self.error(&format!(
1495 "{}:{}: unexpected {}: '{}'",
1497 actual_error.line_num,
1501 .map_or(String::from("message"), |k| k.to_string()),
1504 unexpected.push(actual_error);
1510 let mut not_found = Vec::new();
1511 // anything not yet found is a problem
1512 for (index, expected_error) in expected_errors.iter().enumerate() {
1514 self.error(&format!(
1515 "{}:{}: expected {} not found: {}",
1517 expected_error.line_num,
1518 expected_error.kind.as_ref().map_or("message".into(), |k| k.to_string()),
1521 not_found.push(expected_error);
1525 if !unexpected.is_empty() || !not_found.is_empty() {
1526 self.error(&format!(
1527 "{} unexpected errors found, {} expected errors not found",
1531 println!("status: {}\ncommand: {}", proc_res.status, proc_res.cmdline);
1532 if !unexpected.is_empty() {
1533 println!("unexpected errors (from JSON output): {:#?}\n", unexpected);
1535 if !not_found.is_empty() {
1536 println!("not found errors (from test file): {:#?}\n", not_found);
1542 /// Returns `true` if we should report an error about `actual_error`,
1543 /// which did not match any of the expected error. We always require
1544 /// errors/warnings to be explicitly listed, but only require
1545 /// helps/notes if there are explicit helps/notes given.
1546 fn is_unexpected_compiler_message(
1548 actual_error: &Error,
1552 match actual_error.kind {
1553 Some(ErrorKind::Help) => expect_help,
1554 Some(ErrorKind::Note) => expect_note,
1555 Some(ErrorKind::Error) | Some(ErrorKind::Warning) => true,
1556 Some(ErrorKind::Suggestion) | None => false,
1560 fn should_emit_metadata(&self, pm: Option<PassMode>) -> EmitMetadata {
1561 match (pm, self.props.fail_mode, self.config.mode) {
1562 (Some(PassMode::Check), ..) | (_, Some(FailMode::Check), Ui) => EmitMetadata::Yes,
1563 _ => EmitMetadata::No,
1567 fn compile_test(&self, will_execute: WillExecute, emit_metadata: EmitMetadata) -> ProcRes {
1568 self.compile_test_general(will_execute, emit_metadata, self.props.local_pass_mode())
1571 fn compile_test_general(
1573 will_execute: WillExecute,
1574 emit_metadata: EmitMetadata,
1575 local_pm: Option<PassMode>,
1577 // Only use `make_exe_name` when the test ends up being executed.
1578 let output_file = match will_execute {
1579 WillExecute::Yes => TargetLocation::ThisFile(self.make_exe_name()),
1580 WillExecute::No | WillExecute::Disabled => {
1581 TargetLocation::ThisDirectory(self.output_base_dir())
1585 let allow_unused = match self.config.mode {
1587 // UI tests tend to have tons of unused code as
1588 // it's just testing various pieces of the compile, but we don't
1589 // want to actually assert warnings about all this code. Instead
1590 // let's just ignore unused code warnings by defaults and tests
1591 // can turn it back on if needed.
1592 if !self.is_rustdoc()
1593 // Note that we use the local pass mode here as we don't want
1594 // to set unused to allow if we've overridden the pass mode
1595 // via command line flags.
1596 && local_pm != Some(PassMode::Run)
1603 _ => AllowUnused::No,
1607 self.make_compile_args(&self.testpaths.file, output_file, emit_metadata, allow_unused);
1609 rustc.arg("-L").arg(&self.aux_output_dir_name());
1611 self.compose_and_run_compiler(rustc, None)
1614 fn document(&self, out_dir: &Path) -> ProcRes {
1615 if self.props.build_aux_docs {
1616 for rel_ab in &self.props.aux_builds {
1617 let aux_testpaths = self.compute_aux_test_paths(rel_ab);
1619 self.props.from_aux_file(&aux_testpaths.file, self.revision, self.config);
1620 let aux_cx = TestCx {
1621 config: self.config,
1623 testpaths: &aux_testpaths,
1624 revision: self.revision,
1626 // Create the directory for the stdout/stderr files.
1627 create_dir_all(aux_cx.output_base_dir()).unwrap();
1628 let auxres = aux_cx.document(out_dir);
1629 if !auxres.status.success() {
1635 let aux_dir = self.aux_output_dir_name();
1637 let rustdoc_path = self.config.rustdoc_path.as_ref().expect("--rustdoc-path not passed");
1638 let mut rustdoc = Command::new(rustdoc_path);
1642 .arg(self.config.run_lib_path.to_str().unwrap())
1647 .arg(&self.testpaths.file)
1648 .args(&self.props.compile_flags);
1650 if self.config.mode == RustdocJson {
1651 rustdoc.arg("--output-format").arg("json").arg("-Zunstable-options");
1654 if let Some(ref linker) = self.config.linker {
1655 rustdoc.arg(format!("-Clinker={}", linker));
1658 self.compose_and_run_compiler(rustdoc, None)
1661 fn exec_compiled_test(&self) -> ProcRes {
1662 let env = &self.props.exec_env;
1664 let proc_res = match &*self.config.target {
1665 // This is pretty similar to below, we're transforming:
1667 // program arg1 arg2
1671 // remote-test-client run program 2 support-lib.so support-lib2.so arg1 arg2
1673 // The test-client program will upload `program` to the emulator
1674 // along with all other support libraries listed (in this case
1675 // `support-lib.so` and `support-lib2.so`. It will then execute
1676 // the program on the emulator with the arguments specified
1677 // (in the environment we give the process) and then report back
1679 _ if self.config.remote_test_client.is_some() => {
1680 let aux_dir = self.aux_output_dir_name();
1681 let ProcArgs { prog, args } = self.make_run_args();
1682 let mut support_libs = Vec::new();
1683 if let Ok(entries) = aux_dir.read_dir() {
1684 for entry in entries {
1685 let entry = entry.unwrap();
1686 if !entry.path().is_file() {
1689 support_libs.push(entry.path());
1692 let mut test_client =
1693 Command::new(self.config.remote_test_client.as_ref().unwrap());
1695 .args(&["run", &support_libs.len().to_string(), &prog])
1699 self.compose_and_run(
1701 self.config.run_lib_path.to_str().unwrap(),
1702 Some(aux_dir.to_str().unwrap()),
1706 _ if self.config.target.contains("vxworks") => {
1707 let aux_dir = self.aux_output_dir_name();
1708 let ProcArgs { prog, args } = self.make_run_args();
1709 let mut wr_run = Command::new("wr-run");
1710 wr_run.args(&[&prog]).args(args).envs(env.clone());
1711 self.compose_and_run(
1713 self.config.run_lib_path.to_str().unwrap(),
1714 Some(aux_dir.to_str().unwrap()),
1719 let aux_dir = self.aux_output_dir_name();
1720 let ProcArgs { prog, args } = self.make_run_args();
1721 let mut program = Command::new(&prog);
1722 program.args(args).current_dir(&self.output_base_dir()).envs(env.clone());
1723 self.compose_and_run(
1725 self.config.run_lib_path.to_str().unwrap(),
1726 Some(aux_dir.to_str().unwrap()),
1732 if proc_res.status.success() {
1733 // delete the executable after running it to save space.
1734 // it is ok if the deletion failed.
1735 let _ = fs::remove_file(self.make_exe_name());
1741 /// For each `aux-build: foo/bar` annotation, we check to find the
1742 /// file in an `auxiliary` directory relative to the test itself.
1743 fn compute_aux_test_paths(&self, rel_ab: &str) -> TestPaths {
1748 .expect("test file path has no parent")
1751 if !test_ab.exists() {
1752 self.fatal(&format!("aux-build `{}` source not found", test_ab.display()))
1760 .join(self.output_testname_unique())
1764 .expect("aux-build path has no parent")
1769 fn is_vxworks_pure_static(&self) -> bool {
1770 if self.config.target.contains("vxworks") {
1771 match env::var("RUST_VXWORKS_TEST_DYLINK") {
1780 fn is_vxworks_pure_dynamic(&self) -> bool {
1781 self.config.target.contains("vxworks") && !self.is_vxworks_pure_static()
1784 fn build_all_auxiliary(&self, rustc: &mut Command) -> PathBuf {
1785 let aux_dir = self.aux_output_dir_name();
1787 if !self.props.aux_builds.is_empty() {
1788 let _ = fs::remove_dir_all(&aux_dir);
1789 create_dir_all(&aux_dir).unwrap();
1792 for rel_ab in &self.props.aux_builds {
1793 self.build_auxiliary(rel_ab, &aux_dir);
1796 for (aux_name, aux_path) in &self.props.aux_crates {
1797 let is_dylib = self.build_auxiliary(&aux_path, &aux_dir);
1799 get_lib_name(&aux_path.trim_end_matches(".rs").replace('-', "_"), is_dylib);
1800 rustc.arg("--extern").arg(format!("{}={}/{}", aux_name, aux_dir.display(), lib_name));
1802 if !self.props.aux_crates.is_empty() {
1803 rustc.arg("-Zunstable-options");
1809 fn compose_and_run_compiler(&self, mut rustc: Command, input: Option<String>) -> ProcRes {
1810 let aux_dir = self.build_all_auxiliary(&mut rustc);
1811 self.props.unset_rustc_env.clone().iter().fold(&mut rustc, |rustc, v| rustc.env_remove(v));
1812 rustc.envs(self.props.rustc_env.clone());
1813 self.compose_and_run(
1815 self.config.compile_lib_path.to_str().unwrap(),
1816 Some(aux_dir.to_str().unwrap()),
1821 /// Builds an aux dependency.
1823 /// Returns whether or not it is a dylib.
1824 fn build_auxiliary(&self, source_path: &str, aux_dir: &Path) -> bool {
1825 let aux_testpaths = self.compute_aux_test_paths(source_path);
1826 let aux_props = self.props.from_aux_file(&aux_testpaths.file, self.revision, self.config);
1827 let aux_output = TargetLocation::ThisDirectory(self.aux_output_dir_name());
1828 let aux_cx = TestCx {
1829 config: self.config,
1831 testpaths: &aux_testpaths,
1832 revision: self.revision,
1834 // Create the directory for the stdout/stderr files.
1835 create_dir_all(aux_cx.output_base_dir()).unwrap();
1836 let input_file = &aux_testpaths.file;
1838 aux_cx.make_compile_args(input_file, aux_output, EmitMetadata::No, AllowUnused::No);
1840 for key in &aux_props.unset_rustc_env {
1841 aux_rustc.env_remove(key);
1843 aux_rustc.envs(aux_props.rustc_env.clone());
1845 let (dylib, crate_type) = if aux_props.no_prefer_dynamic {
1847 } else if self.config.target.contains("emscripten")
1848 || (self.config.target.contains("musl")
1849 && !aux_props.force_host
1850 && !self.config.host.contains("musl"))
1851 || self.config.target.contains("wasm32")
1852 || self.config.target.contains("nvptx")
1853 || self.is_vxworks_pure_static()
1854 || self.config.target.contains("sgx")
1855 || self.config.target.contains("bpf")
1857 // We primarily compile all auxiliary libraries as dynamic libraries
1858 // to avoid code size bloat and large binaries as much as possible
1859 // for the test suite (otherwise including libstd statically in all
1860 // executables takes up quite a bit of space).
1862 // For targets like MUSL or Emscripten, however, there is no support for
1863 // dynamic libraries so we just go back to building a normal library. Note,
1864 // however, that for MUSL if the library is built with `force_host` then
1865 // it's ok to be a dylib as the host should always support dylibs.
1866 (false, Some("lib"))
1868 (true, Some("dylib"))
1871 if let Some(crate_type) = crate_type {
1872 aux_rustc.args(&["--crate-type", crate_type]);
1875 aux_rustc.arg("-L").arg(&aux_dir);
1877 let auxres = aux_cx.compose_and_run(
1879 aux_cx.config.compile_lib_path.to_str().unwrap(),
1880 Some(aux_dir.to_str().unwrap()),
1883 if !auxres.status.success() {
1884 self.fatal_proc_rec(
1886 "auxiliary build of {:?} failed to compile: ",
1887 aux_testpaths.file.display()
1897 mut command: Command,
1899 aux_path: Option<&str>,
1900 input: Option<String>,
1903 let cmdline = self.make_cmdline(&command, lib_path);
1904 logv(self.config, format!("executing {}", cmdline));
1908 command.stdout(Stdio::piped()).stderr(Stdio::piped()).stdin(Stdio::piped());
1910 // Need to be sure to put both the lib_path and the aux path in the dylib
1911 // search path for the child.
1913 env::split_paths(&env::var_os(dylib_env_var()).unwrap_or_default()).collect::<Vec<_>>();
1914 if let Some(p) = aux_path {
1915 path.insert(0, PathBuf::from(p))
1917 path.insert(0, PathBuf::from(lib_path));
1919 // Add the new dylib search path var
1920 let newpath = env::join_paths(&path).unwrap();
1921 command.env(dylib_env_var(), newpath);
1923 let mut child = disable_error_reporting(|| command.spawn())
1924 .unwrap_or_else(|_| panic!("failed to exec `{:?}`", &command));
1925 if let Some(input) = input {
1926 child.stdin.as_mut().unwrap().write_all(input.as_bytes()).unwrap();
1929 let Output { status, stdout, stderr } =
1930 read2_abbreviated(child).expect("failed to read output");
1932 let result = ProcRes {
1934 stdout: String::from_utf8_lossy(&stdout).into_owned(),
1935 stderr: String::from_utf8_lossy(&stderr).into_owned(),
1939 self.dump_output(&result.stdout, &result.stderr);
1944 fn is_rustdoc(&self) -> bool {
1945 self.config.src_base.ends_with("rustdoc-ui")
1946 || self.config.src_base.ends_with("rustdoc-js")
1947 || self.config.src_base.ends_with("rustdoc-json")
1950 fn make_compile_args(
1953 output_file: TargetLocation,
1954 emit_metadata: EmitMetadata,
1955 allow_unused: AllowUnused,
1957 let is_aux = input_file.components().map(|c| c.as_os_str()).any(|c| c == "auxiliary");
1958 let is_rustdoc = self.is_rustdoc() && !is_aux;
1959 let mut rustc = if !is_rustdoc {
1960 Command::new(&self.config.rustc_path)
1962 Command::new(&self.config.rustdoc_path.clone().expect("no rustdoc built yet"))
1964 rustc.arg(input_file);
1966 // Use a single thread for efficiency and a deterministic error message order
1967 rustc.arg("-Zthreads=1");
1969 // Optionally prevent default --target if specified in test compile-flags.
1970 let custom_target = self.props.compile_flags.iter().any(|x| x.starts_with("--target"));
1974 if self.props.force_host { &*self.config.host } else { &*self.config.target };
1976 rustc.arg(&format!("--target={}", target));
1978 self.set_revision_flags(&mut rustc);
1981 if let Some(ref incremental_dir) = self.props.incremental_dir {
1982 rustc.args(&["-C", &format!("incremental={}", incremental_dir.display())]);
1983 rustc.args(&["-Z", "incremental-verify-ich"]);
1986 if self.config.mode == CodegenUnits {
1987 rustc.args(&["-Z", "human_readable_cgu_names"]);
1991 match self.config.mode {
1993 // If we are extracting and matching errors in the new
1994 // fashion, then you want JSON mode. Old-skool error
1995 // patterns still match the raw compiler output.
1996 if self.props.error_patterns.is_empty() {
1997 rustc.args(&["--error-format", "json"]);
1999 rustc.arg("-Zui-testing");
2000 rustc.arg("-Zdeduplicate-diagnostics=no");
2003 if !self.props.compile_flags.iter().any(|s| s.starts_with("--error-format")) {
2004 rustc.args(&["--error-format", "json"]);
2006 rustc.arg("-Ccodegen-units=1");
2007 rustc.arg("-Zui-testing");
2008 rustc.arg("-Zdeduplicate-diagnostics=no");
2009 rustc.arg("-Zemit-future-incompat-report");
2015 "-Zmir-opt-level=4",
2017 "-Zdump-mir-exclude-pass-number",
2020 let mir_dump_dir = self.get_mir_dump_dir();
2021 let _ = fs::remove_dir_all(&mir_dump_dir);
2022 create_dir_all(mir_dump_dir.as_path()).unwrap();
2023 let mut dir_opt = "-Zdump-mir-dir=".to_string();
2024 dir_opt.push_str(mir_dump_dir.to_str().unwrap());
2025 debug!("dir_opt: {:?}", dir_opt);
2029 RunPassValgrind | Pretty | DebugInfo | Codegen | Rustdoc | RustdocJson | RunMake
2030 | CodegenUnits | JsDocTest | Assembly => {
2031 // do not use JSON output
2035 if let (false, EmitMetadata::Yes) = (is_rustdoc, emit_metadata) {
2036 rustc.args(&["--emit", "metadata"]);
2040 if self.config.target == "wasm32-unknown-unknown" || self.is_vxworks_pure_static() {
2041 // rustc.arg("-g"); // get any backtrace at all on errors
2042 } else if !self.props.no_prefer_dynamic {
2043 rustc.args(&["-C", "prefer-dynamic"]);
2048 TargetLocation::ThisFile(path) => {
2049 rustc.arg("-o").arg(path);
2051 TargetLocation::ThisDirectory(path) => {
2053 // `rustdoc` uses `-o` for the output directory.
2054 rustc.arg("-o").arg(path);
2056 rustc.arg("--out-dir").arg(path);
2061 match self.config.compare_mode {
2062 Some(CompareMode::Nll) => {
2063 rustc.args(&["-Zborrowck=mir"]);
2065 Some(CompareMode::Polonius) => {
2066 rustc.args(&["-Zpolonius", "-Zborrowck=mir"]);
2068 Some(CompareMode::Chalk) => {
2069 rustc.args(&["-Zchalk"]);
2071 Some(CompareMode::SplitDwarf) => {
2072 rustc.args(&["-Csplit-debuginfo=unpacked", "-Zunstable-options"]);
2074 Some(CompareMode::SplitDwarfSingle) => {
2075 rustc.args(&["-Csplit-debuginfo=packed", "-Zunstable-options"]);
2080 // Add `-A unused` before `config` flags and in-test (`props`) flags, so that they can
2082 if let AllowUnused::Yes = allow_unused {
2083 rustc.args(&["-A", "unused"]);
2086 if self.props.force_host {
2087 self.maybe_add_external_args(
2089 self.split_maybe_args(&self.config.host_rustcflags),
2092 self.maybe_add_external_args(
2094 self.split_maybe_args(&self.config.target_rustcflags),
2097 if let Some(ref linker) = self.config.linker {
2098 rustc.arg(format!("-Clinker={}", linker));
2103 // Use dynamic musl for tests because static doesn't allow creating dylibs
2104 if self.config.host.contains("musl") || self.is_vxworks_pure_dynamic() {
2105 rustc.arg("-Ctarget-feature=-crt-static");
2108 rustc.args(&self.props.compile_flags);
2113 fn make_exe_name(&self) -> PathBuf {
2114 // Using a single letter here to keep the path length down for
2115 // Windows. Some test names get very long. rustc creates `rcgu`
2116 // files with the module name appended to it which can more than
2117 // double the length.
2118 let mut f = self.output_base_dir().join("a");
2119 // FIXME: This is using the host architecture exe suffix, not target!
2120 if self.config.target.contains("emscripten") {
2121 f = f.with_extra_extension("js");
2122 } else if self.config.target.contains("wasm32") {
2123 f = f.with_extra_extension("wasm");
2124 } else if self.config.target.contains("spirv") {
2125 f = f.with_extra_extension("spv");
2126 } else if !env::consts::EXE_SUFFIX.is_empty() {
2127 f = f.with_extra_extension(env::consts::EXE_SUFFIX);
2132 fn make_run_args(&self) -> ProcArgs {
2133 // If we've got another tool to run under (valgrind),
2134 // then split apart its command
2135 let mut args = self.split_maybe_args(&self.config.runtool);
2137 // If this is emscripten, then run tests under nodejs
2138 if self.config.target.contains("emscripten") {
2139 if let Some(ref p) = self.config.nodejs {
2140 args.push(p.clone());
2142 self.fatal("no NodeJS binary found (--nodejs)");
2144 // If this is otherwise wasm, then run tests under nodejs with our
2146 } else if self.config.target.contains("wasm32") {
2147 if let Some(ref p) = self.config.nodejs {
2148 args.push(p.clone());
2150 self.fatal("no NodeJS binary found (--nodejs)");
2157 .unwrap() // chop off `ui`
2159 .unwrap() // chop off `test`
2161 .unwrap(); // chop off `src`
2162 args.push(src.join("src/etc/wasm32-shim.js").display().to_string());
2165 let exe_file = self.make_exe_name();
2167 // FIXME (#9639): This needs to handle non-utf8 paths
2168 args.push(exe_file.to_str().unwrap().to_owned());
2170 // Add the arguments in the run_flags directive
2171 args.extend(self.split_maybe_args(&self.props.run_flags));
2173 let prog = args.remove(0);
2174 ProcArgs { prog, args }
2177 fn split_maybe_args(&self, argstr: &Option<String>) -> Vec<String> {
2182 if s.chars().all(|c| c.is_whitespace()) { None } else { Some(s.to_owned()) }
2189 fn make_cmdline(&self, command: &Command, libpath: &str) -> String {
2192 // Linux and mac don't require adjusting the library search path
2194 format!("{:?}", command)
2196 // Build the LD_LIBRARY_PATH variable as it would be seen on the command line
2197 // for diagnostic purposes
2198 fn lib_path_cmd_prefix(path: &str) -> String {
2199 format!("{}=\"{}\"", util::lib_path_env_var(), util::make_new_path(path))
2202 format!("{} {:?}", lib_path_cmd_prefix(libpath), command)
2206 fn dump_output(&self, out: &str, err: &str) {
2207 let revision = if let Some(r) = self.revision { format!("{}.", r) } else { String::new() };
2209 self.dump_output_file(out, &format!("{}out", revision));
2210 self.dump_output_file(err, &format!("{}err", revision));
2211 self.maybe_dump_to_stdout(out, err);
2214 fn dump_output_file(&self, out: &str, extension: &str) {
2215 let outfile = self.make_out_name(extension);
2216 fs::write(&outfile, out).unwrap();
2219 /// Creates a filename for output with the given extension.
2220 /// E.g., `/.../testname.revision.mode/testname.extension`.
2221 fn make_out_name(&self, extension: &str) -> PathBuf {
2222 self.output_base_name().with_extension(extension)
2225 /// Gets the directory where auxiliary files are written.
2226 /// E.g., `/.../testname.revision.mode/auxiliary/`.
2227 fn aux_output_dir_name(&self) -> PathBuf {
2228 self.output_base_dir()
2230 .with_extra_extension(self.config.mode.disambiguator())
2233 /// Generates a unique name for the test, such as `testname.revision.mode`.
2234 fn output_testname_unique(&self) -> PathBuf {
2235 output_testname_unique(self.config, self.testpaths, self.safe_revision())
2238 /// The revision, ignored for incremental compilation since it wants all revisions in
2239 /// the same directory.
2240 fn safe_revision(&self) -> Option<&str> {
2241 if self.config.mode == Incremental { None } else { self.revision }
2244 /// Gets the absolute path to the directory where all output for the given
2245 /// test/revision should reside.
2246 /// E.g., `/path/to/build/host-triple/test/ui/relative/testname.revision.mode/`.
2247 fn output_base_dir(&self) -> PathBuf {
2248 output_base_dir(self.config, self.testpaths, self.safe_revision())
2251 /// Gets the absolute path to the base filename used as output for the given
2253 /// E.g., `/.../relative/testname.revision.mode/testname`.
2254 fn output_base_name(&self) -> PathBuf {
2255 output_base_name(self.config, self.testpaths, self.safe_revision())
2258 fn maybe_dump_to_stdout(&self, out: &str, err: &str) {
2259 if self.config.verbose {
2260 println!("------{}------------------------------", "stdout");
2261 println!("{}", out);
2262 println!("------{}------------------------------", "stderr");
2263 println!("{}", err);
2264 println!("------------------------------------------");
2268 fn error(&self, err: &str) {
2269 match self.revision {
2270 Some(rev) => println!("\nerror in revision `{}`: {}", rev, err),
2271 None => println!("\nerror: {}", err),
2275 fn fatal(&self, err: &str) -> ! {
2277 error!("fatal error, panic: {:?}", err);
2278 panic!("fatal error");
2281 fn fatal_proc_rec(&self, err: &str, proc_res: &ProcRes) -> ! {
2283 proc_res.fatal(None, || ());
2286 fn fatal_proc_rec_with_ctx(
2290 on_failure: impl FnOnce(Self),
2293 proc_res.fatal(None, || on_failure(*self));
2296 // codegen tests (using FileCheck)
2298 fn compile_test_and_save_ir(&self) -> ProcRes {
2299 let aux_dir = self.aux_output_dir_name();
2301 let output_file = TargetLocation::ThisDirectory(self.output_base_dir());
2302 let input_file = &self.testpaths.file;
2304 self.make_compile_args(input_file, output_file, EmitMetadata::No, AllowUnused::No);
2305 rustc.arg("-L").arg(aux_dir).arg("--emit=llvm-ir");
2307 self.compose_and_run_compiler(rustc, None)
2310 fn compile_test_and_save_assembly(&self) -> (ProcRes, PathBuf) {
2311 // This works with both `--emit asm` (as default output name for the assembly)
2312 // and `ptx-linker` because the latter can write output at requested location.
2313 let output_path = self.output_base_name().with_extension("s");
2315 let output_file = TargetLocation::ThisFile(output_path.clone());
2316 let input_file = &self.testpaths.file;
2318 self.make_compile_args(input_file, output_file, EmitMetadata::No, AllowUnused::No);
2320 rustc.arg("-L").arg(self.aux_output_dir_name());
2322 match self.props.assembly_output.as_ref().map(AsRef::as_ref) {
2323 Some("emit-asm") => {
2324 rustc.arg("--emit=asm");
2327 Some("ptx-linker") => {
2328 // No extra flags needed.
2331 Some(_) => self.fatal("unknown 'assembly-output' header"),
2332 None => self.fatal("missing 'assembly-output' header"),
2335 (self.compose_and_run_compiler(rustc, None), output_path)
2338 fn verify_with_filecheck(&self, output: &Path) -> ProcRes {
2339 let mut filecheck = Command::new(self.config.llvm_filecheck.as_ref().unwrap());
2340 filecheck.arg("--input-file").arg(output).arg(&self.testpaths.file);
2341 // It would be more appropriate to make most of the arguments configurable through
2342 // a comment-attribute similar to `compile-flags`. For example, --check-prefixes is a very
2345 // For now, though…
2346 let prefix_for_target =
2347 if self.config.target.contains("msvc") { "MSVC" } else { "NONMSVC" };
2348 let prefixes = if let Some(rev) = self.revision {
2349 format!("CHECK,{},{}", prefix_for_target, rev)
2351 format!("CHECK,{}", prefix_for_target)
2353 if self.config.llvm_version.unwrap_or(0) >= 130000 {
2354 filecheck.args(&["--allow-unused-prefixes", "--check-prefixes", &prefixes]);
2356 filecheck.args(&["--check-prefixes", &prefixes]);
2358 self.compose_and_run(filecheck, "", None, None)
2361 fn run_codegen_test(&self) {
2362 if self.config.llvm_filecheck.is_none() {
2363 self.fatal("missing --llvm-filecheck");
2366 let proc_res = self.compile_test_and_save_ir();
2367 if !proc_res.status.success() {
2368 self.fatal_proc_rec("compilation failed!", &proc_res);
2371 let output_path = self.output_base_name().with_extension("ll");
2372 let proc_res = self.verify_with_filecheck(&output_path);
2373 if !proc_res.status.success() {
2374 self.fatal_proc_rec("verification with 'FileCheck' failed", &proc_res);
2378 fn run_assembly_test(&self) {
2379 if self.config.llvm_filecheck.is_none() {
2380 self.fatal("missing --llvm-filecheck");
2383 let (proc_res, output_path) = self.compile_test_and_save_assembly();
2384 if !proc_res.status.success() {
2385 self.fatal_proc_rec("compilation failed!", &proc_res);
2388 let proc_res = self.verify_with_filecheck(&output_path);
2389 if !proc_res.status.success() {
2390 self.fatal_proc_rec("verification with 'FileCheck' failed", &proc_res);
2394 fn charset() -> &'static str {
2395 // FreeBSD 10.1 defaults to GDB 6.1.1 which doesn't support "auto" charset
2396 if cfg!(target_os = "freebsd") { "ISO-8859-1" } else { "UTF-8" }
2399 fn run_rustdoc_test(&self) {
2400 assert!(self.revision.is_none(), "revisions not relevant here");
2402 let out_dir = self.output_base_dir();
2403 let _ = fs::remove_dir_all(&out_dir);
2404 create_dir_all(&out_dir).unwrap();
2406 let proc_res = self.document(&out_dir);
2407 if !proc_res.status.success() {
2408 self.fatal_proc_rec("rustdoc failed!", &proc_res);
2411 if self.props.check_test_line_numbers_match {
2412 self.check_rustdoc_test_option(proc_res);
2414 let root = self.config.find_rust_src_root().unwrap();
2415 let res = self.cmd2procres(
2416 Command::new(&self.config.docck_python)
2417 .arg(root.join("src/etc/htmldocck.py"))
2419 .arg(&self.testpaths.file),
2421 if !res.status.success() {
2422 self.fatal_proc_rec_with_ctx("htmldocck failed!", &res, |mut this| {
2423 this.compare_to_default_rustdoc(&out_dir)
2429 fn compare_to_default_rustdoc(&mut self, out_dir: &Path) {
2430 if !self.config.has_tidy {
2433 println!("info: generating a diff against nightly rustdoc");
2436 self.safe_revision().map_or("nightly".into(), |path| path.to_owned() + "-nightly");
2437 let compare_dir = output_base_dir(self.config, self.testpaths, Some(&suffix));
2438 // Don't give an error if the directory didn't already exist
2439 let _ = fs::remove_dir_all(&compare_dir);
2440 create_dir_all(&compare_dir).unwrap();
2442 // We need to create a new struct for the lifetimes on `config` to work.
2443 let new_rustdoc = TestCx {
2445 // FIXME: use beta or a user-specified rustdoc instead of
2446 // hardcoding the default toolchain
2447 rustdoc_path: Some("rustdoc".into()),
2448 // Needed for building auxiliary docs below
2449 rustc_path: "rustc".into(),
2450 ..self.config.clone()
2455 let output_file = TargetLocation::ThisDirectory(new_rustdoc.aux_output_dir_name());
2456 let mut rustc = new_rustdoc.make_compile_args(
2457 &new_rustdoc.testpaths.file,
2462 rustc.arg("-L").arg(&new_rustdoc.aux_output_dir_name());
2463 new_rustdoc.build_all_auxiliary(&mut rustc);
2465 let proc_res = new_rustdoc.document(&compare_dir);
2466 if !proc_res.status.success() {
2467 eprintln!("failed to run nightly rustdoc");
2474 "--indent-spaces", "2",
2476 "--show-warnings", "no",
2481 let tidy_dir = |dir| {
2482 for entry in walkdir::WalkDir::new(dir) {
2483 let entry = entry.expect("failed to read file");
2484 if entry.file_type().is_file()
2485 && entry.path().extension().and_then(|p| p.to_str()) == Some("html".into())
2488 Command::new("tidy").args(&tidy_args).arg(entry.path()).status().unwrap();
2489 // `tidy` returns 1 if it modified the file.
2490 assert!(status.success() || status.code() == Some(1));
2495 tidy_dir(&compare_dir);
2498 let output = Command::new("git").args(&["config", "--get", "core.pager"]).output().ok();
2499 output.and_then(|out| {
2500 if out.status.success() {
2501 Some(String::from_utf8(out.stdout).expect("invalid UTF8 in git pager"))
2508 let diff_filename = format!("build/tmp/rustdoc-compare-{}.diff", std::process::id());
2511 let mut diff_output = File::create(&diff_filename).unwrap();
2512 let mut wrote_data = false;
2513 for entry in walkdir::WalkDir::new(out_dir) {
2514 let entry = entry.expect("failed to read file");
2515 let extension = entry.path().extension().and_then(|p| p.to_str());
2516 if entry.file_type().is_file()
2517 && (extension == Some("html".into()) || extension == Some("js".into()))
2520 compare_dir.join(entry.path().strip_prefix(&out_dir).unwrap());
2522 if let Ok(s) = std::fs::read(&expected_path) { s } else { continue };
2523 let actual_path = entry.path();
2524 let actual = std::fs::read(&actual_path).unwrap();
2525 let diff = unified_diff::diff(
2527 &expected_path.to_string_lossy(),
2529 &actual_path.to_string_lossy(),
2532 wrote_data |= !diff.is_empty();
2533 diff_output.write_all(&diff).unwrap();
2538 println!("note: diff is identical to nightly rustdoc");
2539 assert!(diff_output.metadata().unwrap().len() == 0);
2541 } else if self.config.verbose {
2542 eprintln!("printing diff:");
2543 let mut buf = Vec::new();
2544 diff_output.read_to_end(&mut buf).unwrap();
2545 std::io::stderr().lock().write_all(&mut buf).unwrap();
2549 match self.config.color {
2550 ColorConfig::AlwaysColor => colored::control::set_override(true),
2551 ColorConfig::NeverColor => colored::control::set_override(false),
2555 if let Some(pager) = pager {
2556 let pager = pager.trim();
2557 if self.config.verbose {
2558 eprintln!("using pager {}", pager);
2560 let output = Command::new(pager)
2561 // disable paging; we want this to be non-interactive
2563 .stdin(File::open(&diff_filename).unwrap())
2564 // Capture output and print it explicitly so it will in turn be
2565 // captured by libtest.
2568 assert!(output.status.success());
2569 println!("{}", String::from_utf8_lossy(&output.stdout));
2570 eprintln!("{}", String::from_utf8_lossy(&output.stderr));
2572 use colored::Colorize;
2573 eprintln!("warning: no pager configured, falling back to unified diff");
2575 "help: try configuring a git pager (e.g. `delta`) with `git config --global core.pager delta`"
2577 let mut out = io::stdout();
2578 let mut diff = BufReader::new(File::open(&diff_filename).unwrap());
2579 let mut line = Vec::new();
2582 match diff.read_until(b'\n', &mut line) {
2585 Err(e) => eprintln!("ERROR: {:?}", e),
2587 match String::from_utf8(line.clone()) {
2589 if line.starts_with("+") {
2590 write!(&mut out, "{}", line.green()).unwrap();
2591 } else if line.starts_with("-") {
2592 write!(&mut out, "{}", line.red()).unwrap();
2593 } else if line.starts_with("@") {
2594 write!(&mut out, "{}", line.blue()).unwrap();
2596 out.write_all(line.as_bytes()).unwrap();
2600 write!(&mut out, "{}", String::from_utf8_lossy(&line).reversed()).unwrap();
2607 fn run_rustdoc_json_test(&self) {
2608 //FIXME: Add bless option.
2610 assert!(self.revision.is_none(), "revisions not relevant here");
2612 let out_dir = self.output_base_dir();
2613 let _ = fs::remove_dir_all(&out_dir);
2614 create_dir_all(&out_dir).unwrap();
2616 let proc_res = self.document(&out_dir);
2617 if !proc_res.status.success() {
2618 self.fatal_proc_rec("rustdoc failed!", &proc_res);
2621 let root = self.config.find_rust_src_root().unwrap();
2622 let mut json_out = out_dir.join(self.testpaths.file.file_stem().unwrap());
2623 json_out.set_extension("json");
2624 let res = self.cmd2procres(
2625 Command::new(self.config.jsondocck_path.as_ref().unwrap())
2627 .arg(root.join(&out_dir))
2629 .arg(&self.testpaths.file),
2632 if !res.status.success() {
2633 self.fatal_proc_rec("jsondocck failed!", &res)
2636 let mut json_out = out_dir.join(self.testpaths.file.file_stem().unwrap());
2637 json_out.set_extension("json");
2638 let res = self.cmd2procres(
2639 Command::new(&self.config.docck_python)
2640 .arg(root.join("src/etc/check_missing_items.py"))
2644 if !res.status.success() {
2645 self.fatal_proc_rec("check_missing_items failed!", &res);
2649 fn get_lines<P: AsRef<Path>>(
2652 mut other_files: Option<&mut Vec<String>>,
2654 let content = fs::read_to_string(&path).unwrap();
2655 let mut ignore = false;
2659 .filter_map(|(line_nb, line)| {
2660 if (line.trim_start().starts_with("pub mod ")
2661 || line.trim_start().starts_with("mod "))
2662 && line.ends_with(';')
2664 if let Some(ref mut other_files) = other_files {
2665 other_files.push(line.rsplit("mod ").next().unwrap().replace(";", ""));
2669 let sline = line.split("///").last().unwrap_or("");
2670 let line = sline.trim_start();
2671 if line.starts_with("```") {
2687 fn check_rustdoc_test_option(&self, res: ProcRes) {
2688 let mut other_files = Vec::new();
2689 let mut files: HashMap<String, Vec<usize>> = HashMap::new();
2690 let cwd = env::current_dir().unwrap();
2695 .unwrap_or(&self.testpaths.file)
2698 .replace('\\', "/"),
2699 self.get_lines(&self.testpaths.file, Some(&mut other_files)),
2701 for other_file in other_files {
2702 let mut path = self.testpaths.file.clone();
2703 path.set_file_name(&format!("{}.rs", other_file));
2705 path.strip_prefix(&cwd).unwrap_or(&path).to_str().unwrap().replace('\\', "/"),
2706 self.get_lines(&path, None),
2711 for _ in res.stdout.split('\n').filter(|s| s.starts_with("test ")).inspect(|s| {
2712 if let Some((left, right)) = s.split_once(" - ") {
2713 let path = left.rsplit("test ").next().unwrap();
2714 if let Some(ref mut v) = files.get_mut(&path.replace('\\', "/")) {
2716 let mut iter = right.split("(line ");
2726 if let Ok(pos) = v.binary_search(&line) {
2729 self.fatal_proc_rec(
2730 &format!("Not found doc test: \"{}\" in \"{}\":{:?}", s, path, v),
2738 self.fatal_proc_rec(&format!("No test has been found... {:?}", files), &res);
2740 for (entry, v) in &files {
2742 self.fatal_proc_rec(
2744 "Not found test at line{} \"{}\":{:?}",
2745 if v.len() > 1 { "s" } else { "" },
2756 fn run_codegen_units_test(&self) {
2757 assert!(self.revision.is_none(), "revisions not relevant here");
2759 let proc_res = self.compile_test(WillExecute::No, EmitMetadata::No);
2761 if !proc_res.status.success() {
2762 self.fatal_proc_rec("compilation failed!", &proc_res);
2765 self.check_no_compiler_crash(&proc_res, self.props.should_ice);
2767 const PREFIX: &str = "MONO_ITEM ";
2768 const CGU_MARKER: &str = "@@";
2770 let actual: Vec<MonoItem> = proc_res
2773 .filter(|line| line.starts_with(PREFIX))
2774 .map(|line| str_to_mono_item(line, true))
2777 let expected: Vec<MonoItem> = errors::load_errors(&self.testpaths.file, None)
2779 .map(|e| str_to_mono_item(&e.msg[..], false))
2782 let mut missing = Vec::new();
2783 let mut wrong_cgus = Vec::new();
2785 for expected_item in &expected {
2786 let actual_item_with_same_name = actual.iter().find(|ti| ti.name == expected_item.name);
2788 if let Some(actual_item) = actual_item_with_same_name {
2789 if !expected_item.codegen_units.is_empty() &&
2790 // Also check for codegen units
2791 expected_item.codegen_units != actual_item.codegen_units
2793 wrong_cgus.push((expected_item.clone(), actual_item.clone()));
2796 missing.push(expected_item.string.clone());
2800 let unexpected: Vec<_> = actual
2802 .filter(|acgu| !expected.iter().any(|ecgu| acgu.name == ecgu.name))
2803 .map(|acgu| acgu.string.clone())
2806 if !missing.is_empty() {
2809 println!("\nThese items should have been contained but were not:\n");
2811 for item in &missing {
2812 println!("{}", item);
2818 if !unexpected.is_empty() {
2820 let mut sorted = unexpected.clone();
2825 println!("\nThese items were contained but should not have been:\n");
2827 for item in sorted {
2828 println!("{}", item);
2834 if !wrong_cgus.is_empty() {
2835 wrong_cgus.sort_by_key(|pair| pair.0.name.clone());
2836 println!("\nThe following items were assigned to wrong codegen units:\n");
2838 for &(ref expected_item, ref actual_item) in &wrong_cgus {
2839 println!("{}", expected_item.name);
2840 println!(" expected: {}", codegen_units_to_str(&expected_item.codegen_units));
2841 println!(" actual: {}", codegen_units_to_str(&actual_item.codegen_units));
2846 if !(missing.is_empty() && unexpected.is_empty() && wrong_cgus.is_empty()) {
2850 #[derive(Clone, Eq, PartialEq)]
2853 codegen_units: HashSet<String>,
2857 // [MONO_ITEM] name [@@ (cgu)+]
2858 fn str_to_mono_item(s: &str, cgu_has_crate_disambiguator: bool) -> MonoItem {
2859 let s = if s.starts_with(PREFIX) { (&s[PREFIX.len()..]).trim() } else { s.trim() };
2861 let full_string = format!("{}{}", PREFIX, s);
2863 let parts: Vec<&str> =
2864 s.split(CGU_MARKER).map(str::trim).filter(|s| !s.is_empty()).collect();
2866 let name = parts[0].trim();
2868 let cgus = if parts.len() > 1 {
2869 let cgus_str = parts[1];
2874 .filter(|s| !s.is_empty())
2876 if cgu_has_crate_disambiguator {
2877 remove_crate_disambiguators_from_set_of_cgu_names(s)
2887 MonoItem { name: name.to_owned(), codegen_units: cgus, string: full_string }
2890 fn codegen_units_to_str(cgus: &HashSet<String>) -> String {
2891 let mut cgus: Vec<_> = cgus.iter().collect();
2894 let mut string = String::new();
2896 string.push_str(&cgu[..]);
2897 string.push_str(" ");
2903 // Given a cgu-name-prefix of the form <crate-name>.<crate-disambiguator> or
2904 // the form <crate-name1>.<crate-disambiguator1>-in-<crate-name2>.<crate-disambiguator2>,
2905 // remove all crate-disambiguators.
2906 fn remove_crate_disambiguator_from_cgu(cgu: &str) -> String {
2908 static ref RE: Regex =
2909 Regex::new(r"^[^\.]+(?P<d1>\.[[:alnum:]]+)(-in-[^\.]+(?P<d2>\.[[:alnum:]]+))?")
2914 RE.captures(cgu).unwrap_or_else(|| panic!("invalid cgu name encountered: {}", cgu));
2916 let mut new_name = cgu.to_owned();
2918 if let Some(d2) = captures.name("d2") {
2919 new_name.replace_range(d2.start()..d2.end(), "");
2922 let d1 = captures.name("d1").unwrap();
2923 new_name.replace_range(d1.start()..d1.end(), "");
2928 // The name of merged CGUs is constructed as the names of the original
2929 // CGUs joined with "--". This function splits such composite CGU names
2930 // and handles each component individually.
2931 fn remove_crate_disambiguators_from_set_of_cgu_names(cgus: &str) -> String {
2933 .map(|cgu| remove_crate_disambiguator_from_cgu(cgu))
2934 .collect::<Vec<_>>()
2939 fn init_incremental_test(&self) {
2940 // (See `run_incremental_test` for an overview of how incremental tests work.)
2942 // Before any of the revisions have executed, create the
2943 // incremental workproduct directory. Delete any old
2944 // incremental work products that may be there from prior
2946 let incremental_dir = self.props.incremental_dir.as_ref().unwrap();
2947 if incremental_dir.exists() {
2948 // Canonicalizing the path will convert it to the //?/ format
2949 // on Windows, which enables paths longer than 260 character
2950 let canonicalized = incremental_dir.canonicalize().unwrap();
2951 fs::remove_dir_all(canonicalized).unwrap();
2953 fs::create_dir_all(&incremental_dir).unwrap();
2955 if self.config.verbose {
2956 println!("init_incremental_test: incremental_dir={}", incremental_dir.display());
2960 fn run_incremental_test(&self) {
2961 // Basic plan for a test incremental/foo/bar.rs:
2962 // - load list of revisions rpass1, cfail2, rpass3
2963 // - each should begin with `rpass`, `cfail`, or `rfail`
2964 // - if `rpass`, expect compile and execution to succeed
2965 // - if `cfail`, expect compilation to fail
2966 // - if `rfail`, expect execution to fail
2967 // - create a directory build/foo/bar.incremental
2968 // - compile foo/bar.rs with -C incremental=.../foo/bar.incremental and -C rpass1
2969 // - because name of revision starts with "rpass", expect success
2970 // - compile foo/bar.rs with -C incremental=.../foo/bar.incremental and -C cfail2
2971 // - because name of revision starts with "cfail", expect an error
2972 // - load expected errors as usual, but filter for those that end in `[rfail2]`
2973 // - compile foo/bar.rs with -C incremental=.../foo/bar.incremental and -C rpass3
2974 // - because name of revision starts with "rpass", expect success
2975 // - execute build/foo/bar.exe and save output
2977 // FIXME -- use non-incremental mode as an oracle? That doesn't apply
2978 // to #[rustc_dirty] and clean tests I guess
2980 let revision = self.revision.expect("incremental tests require a list of revisions");
2982 // Incremental workproduct directory should have already been created.
2983 let incremental_dir = self.props.incremental_dir.as_ref().unwrap();
2984 assert!(incremental_dir.exists(), "init_incremental_test failed to create incremental dir");
2986 if self.config.verbose {
2987 print!("revision={:?} props={:#?}", revision, self.props);
2990 if revision.starts_with("rpass") {
2991 if self.props.should_ice {
2992 self.fatal("can only use should-ice in cfail tests");
2994 self.run_rpass_test();
2995 } else if revision.starts_with("rfail") {
2996 if self.props.should_ice {
2997 self.fatal("can only use should-ice in cfail tests");
2999 self.run_rfail_test();
3000 } else if revision.starts_with("cfail") {
3001 self.run_cfail_test();
3003 self.fatal("revision name must begin with rpass, rfail, or cfail");
3007 fn run_rmake_test(&self) {
3008 let cwd = env::current_dir().unwrap();
3009 let src_root = self.config.src_base.parent().unwrap().parent().unwrap().parent().unwrap();
3010 let src_root = cwd.join(&src_root);
3012 let tmpdir = cwd.join(self.output_base_name());
3013 if tmpdir.exists() {
3014 self.aggressive_rm_rf(&tmpdir).unwrap();
3016 create_dir_all(&tmpdir).unwrap();
3018 let host = &self.config.host;
3019 let make = if host.contains("dragonfly")
3020 || host.contains("freebsd")
3021 || host.contains("netbsd")
3022 || host.contains("openbsd")
3029 let mut cmd = Command::new(make);
3030 cmd.current_dir(&self.testpaths.file)
3031 .stdout(Stdio::piped())
3032 .stderr(Stdio::piped())
3033 .env("TARGET", &self.config.target)
3034 .env("PYTHON", &self.config.docck_python)
3036 .env("RUST_BUILD_STAGE", &self.config.stage_id)
3037 .env("RUSTC", cwd.join(&self.config.rustc_path))
3038 .env("TMPDIR", &tmpdir)
3039 .env("LD_LIB_PATH_ENVVAR", dylib_env_var())
3040 .env("HOST_RPATH_DIR", cwd.join(&self.config.compile_lib_path))
3041 .env("TARGET_RPATH_DIR", cwd.join(&self.config.run_lib_path))
3042 .env("LLVM_COMPONENTS", &self.config.llvm_components)
3043 // We for sure don't want these tests to run in parallel, so make
3044 // sure they don't have access to these vars if we run via `make`
3046 .env_remove("MAKEFLAGS")
3047 .env_remove("MFLAGS")
3048 .env_remove("CARGO_MAKEFLAGS");
3050 if let Some(ref rustdoc) = self.config.rustdoc_path {
3051 cmd.env("RUSTDOC", cwd.join(rustdoc));
3054 if let Some(ref rust_demangler) = self.config.rust_demangler_path {
3055 cmd.env("RUST_DEMANGLER", cwd.join(rust_demangler));
3058 if let Some(ref node) = self.config.nodejs {
3059 cmd.env("NODE", node);
3062 if let Some(ref linker) = self.config.linker {
3063 cmd.env("RUSTC_LINKER", linker);
3066 if let Some(ref clang) = self.config.run_clang_based_tests_with {
3067 cmd.env("CLANG", clang);
3070 if let Some(ref filecheck) = self.config.llvm_filecheck {
3071 cmd.env("LLVM_FILECHECK", filecheck);
3074 if let Some(ref llvm_bin_dir) = self.config.llvm_bin_dir {
3075 cmd.env("LLVM_BIN_DIR", llvm_bin_dir);
3078 // We don't want RUSTFLAGS set from the outside to interfere with
3079 // compiler flags set in the test cases:
3080 cmd.env_remove("RUSTFLAGS");
3082 // Use dynamic musl for tests because static doesn't allow creating dylibs
3083 if self.config.host.contains("musl") {
3084 cmd.env("RUSTFLAGS", "-Ctarget-feature=-crt-static").env("IS_MUSL_HOST", "1");
3087 if self.config.bless {
3088 cmd.env("RUSTC_BLESS_TEST", "--bless");
3089 // Assume this option is active if the environment variable is "defined", with _any_ value.
3090 // As an example, a `Makefile` can use this option by:
3092 // ifdef RUSTC_BLESS_TEST
3093 // cp "$(TMPDIR)"/actual_something.ext expected_something.ext
3095 // $(DIFF) expected_something.ext "$(TMPDIR)"/actual_something.ext
3099 if self.config.target.contains("msvc") && self.config.cc != "" {
3100 // We need to pass a path to `lib.exe`, so assume that `cc` is `cl.exe`
3101 // and that `lib.exe` lives next to it.
3102 let lib = Path::new(&self.config.cc).parent().unwrap().join("lib.exe");
3104 // MSYS doesn't like passing flags of the form `/foo` as it thinks it's
3105 // a path and instead passes `C:\msys64\foo`, so convert all
3106 // `/`-arguments to MSVC here to `-` arguments.
3111 .map(|s| s.replace("/", "-"))
3112 .collect::<Vec<_>>()
3115 cmd.env("IS_MSVC", "1")
3116 .env("IS_WINDOWS", "1")
3117 .env("MSVC_LIB", format!("'{}' -nologo", lib.display()))
3118 .env("CC", format!("'{}' {}", self.config.cc, cflags))
3119 .env("CXX", format!("'{}'", &self.config.cxx));
3121 cmd.env("CC", format!("{} {}", self.config.cc, self.config.cflags))
3122 .env("CXX", format!("{} {}", self.config.cxx, self.config.cflags))
3123 .env("AR", &self.config.ar);
3125 if self.config.target.contains("windows") {
3126 cmd.env("IS_WINDOWS", "1");
3130 let output = cmd.spawn().and_then(read2_abbreviated).expect("failed to spawn `make`");
3131 if !output.status.success() {
3133 status: output.status,
3134 stdout: String::from_utf8_lossy(&output.stdout).into_owned(),
3135 stderr: String::from_utf8_lossy(&output.stderr).into_owned(),
3136 cmdline: format!("{:?}", cmd),
3138 self.fatal_proc_rec("make failed", &res);
3142 fn aggressive_rm_rf(&self, path: &Path) -> io::Result<()> {
3143 for e in path.read_dir()? {
3145 let path = entry.path();
3146 if entry.file_type()?.is_dir() {
3147 self.aggressive_rm_rf(&path)?;
3149 // Remove readonly files as well on windows (by default we can't)
3150 fs::remove_file(&path).or_else(|e| {
3151 if cfg!(windows) && e.kind() == io::ErrorKind::PermissionDenied {
3152 let mut meta = entry.metadata()?.permissions();
3153 meta.set_readonly(false);
3154 fs::set_permissions(&path, meta)?;
3155 fs::remove_file(&path)
3162 fs::remove_dir(path)
3165 fn run_js_doc_test(&self) {
3166 if let Some(nodejs) = &self.config.nodejs {
3167 let out_dir = self.output_base_dir();
3169 self.document(&out_dir);
3171 let root = self.config.find_rust_src_root().unwrap();
3173 self.testpaths.file.file_stem().and_then(|f| f.to_str()).expect("no file stem");
3174 let res = self.cmd2procres(
3175 Command::new(&nodejs)
3176 .arg(root.join("src/tools/rustdoc-js/tester.js"))
3177 .arg("--doc-folder")
3179 .arg("--crate-name")
3180 .arg(file_stem.replace("-", "_"))
3182 .arg(self.testpaths.file.with_extension("js")),
3184 if !res.status.success() {
3185 self.fatal_proc_rec("rustdoc-js test failed!", &res);
3188 self.fatal("no nodeJS");
3192 fn load_compare_outputs(
3195 output_kind: TestOutput,
3196 explicit_format: bool,
3198 let stderr_bits = format!("{}.stderr", get_pointer_width(&self.config.target));
3199 let (stderr_kind, stdout_kind) = match output_kind {
3200 TestOutput::Compile => (
3202 if self.props.stderr_per_bitwidth { &stderr_bits } else { UI_STDERR }
3206 TestOutput::Run => (UI_RUN_STDERR, UI_RUN_STDOUT),
3209 let expected_stderr = self.load_expected_output(stderr_kind);
3210 let expected_stdout = self.load_expected_output(stdout_kind);
3212 let normalized_stdout = match output_kind {
3213 TestOutput::Run if self.config.remote_test_client.is_some() => {
3214 // When tests are run using the remote-test-client, the string
3215 // 'uploaded "$TEST_BUILD_DIR/<test_executable>, waiting for result"'
3216 // is printed to stdout by the client and then captured in the ProcRes,
3217 // so it needs to be removed when comparing the run-pass test execution output
3219 static ref REMOTE_TEST_RE: Regex = Regex::new(
3220 "^uploaded \"\\$TEST_BUILD_DIR(/[[:alnum:]_\\-.]+)+\", waiting for result\n"
3226 &self.normalize_output(&proc_res.stdout, &self.props.normalize_stdout),
3231 _ => self.normalize_output(&proc_res.stdout, &self.props.normalize_stdout),
3234 let stderr = if explicit_format {
3235 proc_res.stderr.clone()
3237 json::extract_rendered(&proc_res.stderr)
3240 let normalized_stderr = self.normalize_output(&stderr, &self.props.normalize_stderr);
3243 TestOutput::Compile => {
3244 if !self.props.dont_check_compiler_stdout {
3246 self.compare_output(stdout_kind, &normalized_stdout, &expected_stdout);
3248 if !self.props.dont_check_compiler_stderr {
3250 self.compare_output(stderr_kind, &normalized_stderr, &expected_stderr);
3253 TestOutput::Run => {
3254 errors += self.compare_output(stdout_kind, &normalized_stdout, &expected_stdout);
3255 errors += self.compare_output(stderr_kind, &normalized_stderr, &expected_stderr);
3261 fn run_ui_test(&self) {
3262 if let Some(FailMode::Build) = self.props.fail_mode {
3263 // Make sure a build-fail test cannot fail due to failing analysis (e.g. typeck).
3264 let pm = Some(PassMode::Check);
3265 let proc_res = self.compile_test_general(WillExecute::No, EmitMetadata::Yes, pm);
3266 self.check_if_test_should_compile(&proc_res, pm);
3269 let pm = self.pass_mode();
3270 let should_run = self.should_run(pm);
3271 let emit_metadata = self.should_emit_metadata(pm);
3272 let proc_res = self.compile_test(should_run, emit_metadata);
3273 self.check_if_test_should_compile(&proc_res, pm);
3275 // if the user specified a format in the ui test
3276 // print the output to the stderr file, otherwise extract
3277 // the rendered error messages from json and print them
3278 let explicit = self.props.compile_flags.iter().any(|s| s.contains("--error-format"));
3280 let expected_fixed = self.load_expected_output(UI_FIXED);
3282 let modes_to_prune = vec![CompareMode::Nll];
3283 self.prune_duplicate_outputs(&modes_to_prune);
3285 let mut errors = self.load_compare_outputs(&proc_res, TestOutput::Compile, explicit);
3286 let rustfix_input = json::rustfix_diagnostics_only(&proc_res.stderr);
3288 if self.config.compare_mode.is_some() {
3289 // don't test rustfix with nll right now
3290 } else if self.config.rustfix_coverage {
3291 // Find out which tests have `MachineApplicable` suggestions but are missing
3292 // `run-rustfix` or `run-rustfix-only-machine-applicable` headers.
3294 // This will return an empty `Vec` in case the executed test file has a
3295 // `compile-flags: --error-format=xxxx` header with a value other than `json`.
3296 let suggestions = get_suggestions_from_json(
3299 Filter::MachineApplicableOnly,
3301 .unwrap_or_default();
3302 if !suggestions.is_empty()
3303 && !self.props.run_rustfix
3304 && !self.props.rustfix_only_machine_applicable
3306 let mut coverage_file_path = self.config.build_base.clone();
3307 coverage_file_path.push("rustfix_missing_coverage.txt");
3308 debug!("coverage_file_path: {}", coverage_file_path.display());
3310 let mut file = OpenOptions::new()
3313 .open(coverage_file_path.as_path())
3314 .expect("could not create or open file");
3316 if writeln!(file, "{}", self.testpaths.file.display()).is_err() {
3317 panic!("couldn't write to {}", coverage_file_path.display());
3320 } else if self.props.run_rustfix {
3321 // Apply suggestions from rustc to the code itself
3322 let unfixed_code = self.load_expected_output_from_path(&self.testpaths.file).unwrap();
3323 let suggestions = get_suggestions_from_json(
3326 if self.props.rustfix_only_machine_applicable {
3327 Filter::MachineApplicableOnly
3333 let fixed_code = apply_suggestions(&unfixed_code, &suggestions).unwrap_or_else(|e| {
3335 "failed to apply suggestions for {:?} with rustfix: {}",
3336 self.testpaths.file, e
3340 errors += self.compare_output("fixed", &fixed_code, &expected_fixed);
3341 } else if !expected_fixed.is_empty() {
3343 "the `// run-rustfix` directive wasn't found but a `*.fixed` \
3349 println!("To update references, rerun the tests and pass the `--bless` flag");
3350 let relative_path_to_file =
3351 self.testpaths.relative_dir.join(self.testpaths.file.file_name().unwrap());
3353 "To only update this specific test, also pass `--test-args {}`",
3354 relative_path_to_file.display(),
3356 self.fatal_proc_rec(
3357 &format!("{} errors occurred comparing output.", errors),
3362 let expected_errors = errors::load_errors(&self.testpaths.file, self.revision);
3364 if let WillExecute::Yes = should_run {
3365 let proc_res = self.exec_compiled_test();
3366 let run_output_errors = if self.props.check_run_results {
3367 self.load_compare_outputs(&proc_res, TestOutput::Run, explicit)
3371 if run_output_errors > 0 {
3372 self.fatal_proc_rec(
3373 &format!("{} errors occurred comparing run output.", run_output_errors),
3377 if self.should_run_successfully(pm) {
3378 if !proc_res.status.success() {
3379 self.fatal_proc_rec("test run failed!", &proc_res);
3382 if proc_res.status.success() {
3383 self.fatal_proc_rec("test run succeeded!", &proc_res);
3386 if !self.props.error_patterns.is_empty() {
3387 // "// error-pattern" comments
3388 self.check_error_patterns(&proc_res.stderr, &proc_res, pm);
3393 "run_ui_test: explicit={:?} config.compare_mode={:?} expected_errors={:?} \
3394 proc_res.status={:?} props.error_patterns={:?}",
3396 self.config.compare_mode,
3399 self.props.error_patterns
3401 if !explicit && self.config.compare_mode.is_none() {
3402 let check_patterns =
3403 should_run == WillExecute::No && !self.props.error_patterns.is_empty();
3405 let check_annotations = !check_patterns || !expected_errors.is_empty();
3408 // "// error-pattern" comments
3409 self.check_error_patterns(&proc_res.stderr, &proc_res, pm);
3412 if check_annotations {
3413 // "//~ERROR comments"
3414 self.check_expected_errors(expected_errors, &proc_res);
3418 if self.props.run_rustfix && self.config.compare_mode.is_none() {
3419 // And finally, compile the fixed code and make sure it both
3420 // succeeds and has no diagnostics.
3421 let mut rustc = self.make_compile_args(
3422 &self.testpaths.file.with_extension(UI_FIXED),
3423 TargetLocation::ThisFile(self.make_exe_name()),
3427 rustc.arg("-L").arg(&self.aux_output_dir_name());
3428 let res = self.compose_and_run_compiler(rustc, None);
3429 if !res.status.success() {
3430 self.fatal_proc_rec("failed to compile fixed code", &res);
3432 if !res.stderr.is_empty() && !self.props.rustfix_only_machine_applicable {
3433 if !json::rustfix_diagnostics_only(&res.stderr).is_empty() {
3434 self.fatal_proc_rec("fixed code is still producing diagnostics", &res);
3440 fn run_mir_opt_test(&self) {
3441 let pm = self.pass_mode();
3442 let should_run = self.should_run(pm);
3443 let emit_metadata = self.should_emit_metadata(pm);
3444 let proc_res = self.compile_test(should_run, emit_metadata);
3446 if !proc_res.status.success() {
3447 self.fatal_proc_rec("compilation failed!", &proc_res);
3450 self.check_mir_dump();
3452 if let WillExecute::Yes = should_run {
3453 let proc_res = self.exec_compiled_test();
3455 if !proc_res.status.success() {
3456 self.fatal_proc_rec("test run failed!", &proc_res);
3461 fn check_mir_dump(&self) {
3462 let test_file_contents = fs::read_to_string(&self.testpaths.file).unwrap();
3464 let test_dir = self.testpaths.file.parent().unwrap();
3466 self.testpaths.file.file_stem().unwrap().to_str().unwrap().replace("-", "_");
3468 let mut bit_width = String::new();
3469 if test_file_contents.lines().any(|l| l == "// EMIT_MIR_FOR_EACH_BIT_WIDTH") {
3470 bit_width = format!(".{}", get_pointer_width(&self.config.target));
3473 if self.config.bless {
3475 glob(&format!("{}/{}.*{}.mir", test_dir.display(), test_crate, bit_width)).unwrap()
3477 std::fs::remove_file(e.unwrap()).unwrap();
3480 glob(&format!("{}/{}.*{}.diff", test_dir.display(), test_crate, bit_width)).unwrap()
3482 std::fs::remove_file(e.unwrap()).unwrap();
3486 for l in test_file_contents.lines() {
3487 if l.starts_with("// EMIT_MIR ") {
3488 let test_name = l.trim_start_matches("// EMIT_MIR ").trim();
3489 let mut test_names = test_name.split(' ');
3490 // sometimes we specify two files so that we get a diff between the two files
3491 let test_name = test_names.next().unwrap();
3492 let mut expected_file;
3496 if test_name.ends_with(".diff") {
3497 let trimmed = test_name.trim_end_matches(".diff");
3498 let test_against = format!("{}.after.mir", trimmed);
3499 from_file = format!("{}.before.mir", trimmed);
3500 expected_file = format!("{}{}.diff", trimmed, bit_width);
3502 test_names.next().is_none(),
3503 "two mir pass names specified for MIR diff"
3505 to_file = Some(test_against);
3506 } else if let Some(first_pass) = test_names.next() {
3507 let second_pass = test_names.next().unwrap();
3509 test_names.next().is_none(),
3510 "three mir pass names specified for MIR diff"
3513 format!("{}{}.{}-{}.diff", test_name, bit_width, first_pass, second_pass);
3514 let second_file = format!("{}.{}.mir", test_name, second_pass);
3515 from_file = format!("{}.{}.mir", test_name, first_pass);
3516 to_file = Some(second_file);
3518 let ext_re = Regex::new(r#"(\.(mir|dot|html))$"#).unwrap();
3520 .captures_iter(test_name)
3522 .expect("test_name has an invalid extension");
3523 let extension = cap.get(1).unwrap().as_str();
3524 expected_file = format!(
3526 test_name.trim_end_matches(extension),
3530 from_file = test_name.to_string();
3532 test_names.next().is_none(),
3533 "two mir pass names specified for MIR dump"
3537 if !expected_file.starts_with(&test_crate) {
3538 expected_file = format!("{}.{}", test_crate, expected_file);
3540 let expected_file = test_dir.join(expected_file);
3542 let dumped_string = if let Some(after) = to_file {
3543 self.diff_mir_files(from_file.into(), after.into())
3545 let mut output_file = PathBuf::new();
3546 output_file.push(self.get_mir_dump_dir());
3547 output_file.push(&from_file);
3549 "comparing the contents of: {} with {}",
3550 output_file.display(),
3551 expected_file.display()
3553 if !output_file.exists() {
3555 "Output file `{}` from test does not exist, available files are in `{}`",
3556 output_file.display(),
3557 output_file.parent().unwrap().display()
3560 self.check_mir_test_timestamp(&from_file, &output_file);
3561 let dumped_string = fs::read_to_string(&output_file).unwrap();
3562 self.normalize_output(&dumped_string, &[])
3565 if self.config.bless {
3566 let _ = std::fs::remove_file(&expected_file);
3567 std::fs::write(expected_file, dumped_string.as_bytes()).unwrap();
3569 if !expected_file.exists() {
3571 "Output file `{}` from test does not exist",
3572 expected_file.display()
3575 let expected_string = fs::read_to_string(&expected_file).unwrap();
3576 if dumped_string != expected_string {
3577 print!("{}", write_diff(&expected_string, &dumped_string, 3));
3579 "Actual MIR output differs from expected MIR output {}",
3580 expected_file.display()
3588 fn diff_mir_files(&self, before: PathBuf, after: PathBuf) -> String {
3589 let to_full_path = |path: PathBuf| {
3590 let full = self.get_mir_dump_dir().join(&path);
3593 "the mir dump file for {} does not exist (requested in {})",
3595 self.testpaths.file.display(),
3600 let before = to_full_path(before);
3601 let after = to_full_path(after);
3602 debug!("comparing the contents of: {} with {}", before.display(), after.display());
3603 let before = fs::read_to_string(before).unwrap();
3604 let after = fs::read_to_string(after).unwrap();
3605 let before = self.normalize_output(&before, &[]);
3606 let after = self.normalize_output(&after, &[]);
3607 let mut dumped_string = String::new();
3608 for result in diff::lines(&before, &after) {
3609 use std::fmt::Write;
3611 diff::Result::Left(s) => writeln!(dumped_string, "- {}", s).unwrap(),
3612 diff::Result::Right(s) => writeln!(dumped_string, "+ {}", s).unwrap(),
3613 diff::Result::Both(s, _) => writeln!(dumped_string, " {}", s).unwrap(),
3619 fn check_mir_test_timestamp(&self, test_name: &str, output_file: &Path) {
3620 let t = |file| fs::metadata(file).unwrap().modified().unwrap();
3621 let source_file = &self.testpaths.file;
3622 let output_time = t(output_file);
3623 let source_time = t(source_file);
3624 if source_time > output_time {
3625 debug!("source file time: {:?} output file time: {:?}", source_time, output_time);
3627 "test source file `{}` is newer than potentially stale output file `{}`.",
3628 source_file.display(),
3634 fn get_mir_dump_dir(&self) -> PathBuf {
3635 let mut mir_dump_dir = PathBuf::from(self.config.build_base.as_path());
3636 debug!("input_file: {:?}", self.testpaths.file);
3637 mir_dump_dir.push(&self.testpaths.relative_dir);
3638 mir_dump_dir.push(self.testpaths.file.file_stem().unwrap());
3642 fn normalize_output(&self, output: &str, custom_rules: &[(String, String)]) -> String {
3643 let cflags = self.props.compile_flags.join(" ");
3644 let json = cflags.contains("--error-format json")
3645 || cflags.contains("--error-format pretty-json")
3646 || cflags.contains("--error-format=json")
3647 || cflags.contains("--error-format=pretty-json")
3648 || cflags.contains("--output-format json")
3649 || cflags.contains("--output-format=json");
3651 let mut normalized = output.to_string();
3653 let mut normalize_path = |from: &Path, to: &str| {
3654 let mut from = from.display().to_string();
3656 from = from.replace("\\", "\\\\");
3658 normalized = normalized.replace(&from, to);
3661 let parent_dir = self.testpaths.file.parent().unwrap();
3662 normalize_path(parent_dir, "$DIR");
3664 // Paths into the libstd/libcore
3675 normalize_path(&src_dir, "$SRC_DIR");
3677 if let Some(virtual_rust_source_base_dir) =
3678 option_env!("CFG_VIRTUAL_RUST_SOURCE_BASE_DIR").map(PathBuf::from)
3680 normalize_path(&virtual_rust_source_base_dir.join("library"), "$SRC_DIR");
3683 // Paths into the build directory
3684 let test_build_dir = &self.config.build_base;
3685 let parent_build_dir = test_build_dir.parent().unwrap().parent().unwrap().parent().unwrap();
3687 // eg. /home/user/rust/build/x86_64-unknown-linux-gnu/test/ui
3688 normalize_path(test_build_dir, "$TEST_BUILD_DIR");
3689 // eg. /home/user/rust/build
3690 normalize_path(parent_build_dir, "$BUILD_DIR");
3692 // Paths into lib directory.
3693 normalize_path(&parent_build_dir.parent().unwrap().join("lib"), "$LIB_DIR");
3696 // escaped newlines in json strings should be readable
3697 // in the stderr files. There's no point int being correct,
3698 // since only humans process the stderr files.
3699 // Thus we just turn escaped newlines back into newlines.
3700 normalized = normalized.replace("\\n", "\n");
3703 // If there are `$SRC_DIR` normalizations with line and column numbers, then replace them
3704 // with placeholders as we do not want tests needing updated when compiler source code
3706 // eg. $SRC_DIR/libcore/mem.rs:323:14 becomes $SRC_DIR/libcore/mem.rs:LL:COL
3707 normalized = Regex::new("SRC_DIR(.+):\\d+:\\d+(: \\d+:\\d+)?")
3709 .replace_all(&normalized, "SRC_DIR$1:LL:COL")
3712 normalized = Self::normalize_platform_differences(&normalized);
3713 normalized = normalized.replace("\t", "\\t"); // makes tabs visible
3715 // Remove test annotations like `//~ ERROR text` from the output,
3716 // since they duplicate actual errors and make the output hard to read.
3717 // This mirrors the regex in src/tools/tidy/src/style.rs, please update
3718 // both if either are changed.
3720 Regex::new("\\s*//(\\[.*\\])?~.*").unwrap().replace_all(&normalized, "").into_owned();
3722 for rule in custom_rules {
3723 let re = Regex::new(&rule.0).expect("bad regex in custom normalization rule");
3724 normalized = re.replace_all(&normalized, &rule.1[..]).into_owned();
3729 /// Normalize output differences across platforms. Generally changes Windows output to be more
3732 /// Replaces backslashes in paths with forward slashes, and replaces CRLF line endings
3734 fn normalize_platform_differences(output: &str) -> String {
3736 /// Used to find Windows paths.
3738 /// It's not possible to detect paths in the error messages generally, but this is a
3739 /// decent enough heuristic.
3740 static ref PATH_BACKSLASH_RE: Regex = Regex::new(r#"(?x)
3742 # Match paths that don't include spaces.
3743 (?:\\[\pL\pN\.\-_']+)+\.\pL+
3745 # If the path starts with a well-known root, then allow spaces.
3746 \$(?:DIR|SRC_DIR|TEST_BUILD_DIR|BUILD_DIR|LIB_DIR)(?:\\[\pL\pN\.\-_' ]+)+
3751 let output = output.replace(r"\\", r"\");
3754 .replace_all(&output, |caps: &Captures<'_>| {
3755 println!("{}", &caps[0]);
3756 caps[0].replace(r"\", "/")
3758 .replace("\r\n", "\n")
3761 fn expected_output_path(&self, kind: &str) -> PathBuf {
3763 expected_output_path(&self.testpaths, self.revision, &self.config.compare_mode, kind);
3766 if let Some(CompareMode::Polonius) = self.config.compare_mode {
3767 path = expected_output_path(
3770 &Some(CompareMode::Nll),
3777 path = expected_output_path(&self.testpaths, self.revision, &None, kind);
3783 fn load_expected_output(&self, kind: &str) -> String {
3784 let path = self.expected_output_path(kind);
3786 match self.load_expected_output_from_path(&path) {
3788 Err(x) => self.fatal(&x),
3795 fn load_expected_output_from_path(&self, path: &Path) -> Result<String, String> {
3796 fs::read_to_string(path).map_err(|err| {
3797 format!("failed to load expected output from `{}`: {}", path.display(), err)
3801 fn delete_file(&self, file: &PathBuf) {
3803 // Deleting a nonexistant file would error.
3806 if let Err(e) = fs::remove_file(file) {
3807 self.fatal(&format!("failed to delete `{}`: {}", file.display(), e,));
3811 fn compare_output(&self, kind: &str, actual: &str, expected: &str) -> usize {
3812 if actual == expected {
3816 if !self.config.bless {
3817 if expected.is_empty() {
3818 println!("normalized {}:\n{}\n", kind, actual);
3820 println!("diff of {}:\n", kind);
3821 print!("{}", write_diff(expected, actual, 3));
3825 let mode = self.config.compare_mode.as_ref().map_or("", |m| m.to_str());
3826 let output_file = self
3828 .with_extra_extension(self.revision.unwrap_or(""))
3829 .with_extra_extension(mode)
3830 .with_extra_extension(kind);
3832 let mut files = vec![output_file];
3833 if self.config.bless {
3834 // Delete non-revision .stderr/.stdout file if revisions are used.
3835 // Without this, we'd just generate the new files and leave the old files around.
3836 if self.revision.is_some() {
3838 expected_output_path(self.testpaths, None, &self.config.compare_mode, kind);
3839 self.delete_file(&old);
3841 files.push(expected_output_path(
3844 &self.config.compare_mode,
3849 for output_file in &files {
3850 if actual.is_empty() {
3851 self.delete_file(output_file);
3852 } else if let Err(err) = fs::write(&output_file, &actual) {
3853 self.fatal(&format!(
3854 "failed to write {} to `{}`: {}",
3856 output_file.display(),
3862 println!("\nThe actual {0} differed from the expected {0}.", kind);
3863 for output_file in files {
3864 println!("Actual {} saved to {}", kind, output_file.display());
3866 if self.config.bless { 0 } else { 1 }
3869 fn prune_duplicate_output(&self, mode: CompareMode, kind: &str, canon_content: &str) {
3870 let examined_path = expected_output_path(&self.testpaths, self.revision, &Some(mode), kind);
3872 let examined_content =
3873 self.load_expected_output_from_path(&examined_path).unwrap_or_else(|_| String::new());
3875 if canon_content == examined_content {
3876 self.delete_file(&examined_path);
3880 fn prune_duplicate_outputs(&self, modes: &[CompareMode]) {
3881 if self.config.bless {
3882 for kind in UI_EXTENSIONS {
3883 let canon_comparison_path =
3884 expected_output_path(&self.testpaths, self.revision, &None, kind);
3886 if let Ok(canon) = self.load_expected_output_from_path(&canon_comparison_path) {
3888 self.prune_duplicate_output(mode.clone(), kind, &canon);
3895 fn create_stamp(&self) {
3896 let stamp = crate::stamp(&self.config, self.testpaths, self.revision);
3897 fs::write(&stamp, compute_stamp_hash(&self.config)).unwrap();
3906 pub struct ProcRes {
3914 pub fn fatal(&self, err: Option<&str>, on_failure: impl FnOnce()) -> ! {
3915 if let Some(e) = err {
3916 println!("\nerror: {}", e);
3923 ------------------------------------------\n\
3925 ------------------------------------------\n\
3927 ------------------------------------------\n\
3929 ------------------------------------------\n\
3933 json::extract_rendered(&self.stdout),
3934 json::extract_rendered(&self.stderr),
3937 // Use resume_unwind instead of panic!() to prevent a panic message + backtrace from
3938 // compiletest, which is unnecessary noise.
3939 std::panic::resume_unwind(Box::new(()));
3944 enum TargetLocation {
3946 ThisDirectory(PathBuf),
3954 fn read2_abbreviated(mut child: Child) -> io::Result<Output> {
3955 use crate::read2::read2;
3956 use std::mem::replace;
3958 const HEAD_LEN: usize = 160 * 1024;
3959 const TAIL_LEN: usize = 256 * 1024;
3963 Abbreviated { head: Vec<u8>, skipped: usize, tail: Box<[u8]> },
3967 fn extend(&mut self, data: &[u8]) {
3968 let new_self = match *self {
3969 ProcOutput::Full(ref mut bytes) => {
3970 bytes.extend_from_slice(data);
3971 let new_len = bytes.len();
3972 if new_len <= HEAD_LEN + TAIL_LEN {
3975 let tail = bytes.split_off(new_len - TAIL_LEN).into_boxed_slice();
3976 let head = replace(bytes, Vec::new());
3977 let skipped = new_len - HEAD_LEN - TAIL_LEN;
3978 ProcOutput::Abbreviated { head, skipped, tail }
3980 ProcOutput::Abbreviated { ref mut skipped, ref mut tail, .. } => {
3981 *skipped += data.len();
3982 if data.len() <= TAIL_LEN {
3983 tail[..data.len()].copy_from_slice(data);
3984 tail.rotate_left(data.len());
3986 tail.copy_from_slice(&data[(data.len() - TAIL_LEN)..]);
3994 fn into_bytes(self) -> Vec<u8> {
3996 ProcOutput::Full(bytes) => bytes,
3997 ProcOutput::Abbreviated { mut head, skipped, tail } => {
3998 write!(&mut head, "\n\n<<<<<< SKIPPED {} BYTES >>>>>>\n\n", skipped).unwrap();
3999 head.extend_from_slice(&tail);
4006 let mut stdout = ProcOutput::Full(Vec::new());
4007 let mut stderr = ProcOutput::Full(Vec::new());
4009 drop(child.stdin.take());
4011 child.stdout.take().unwrap(),
4012 child.stderr.take().unwrap(),
4013 &mut |is_stdout, data, _| {
4014 if is_stdout { &mut stdout } else { &mut stderr }.extend(data);
4018 let status = child.wait()?;
4020 Ok(Output { status, stdout: stdout.into_bytes(), stderr: stderr.into_bytes() })