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On nightly, dump ICE backtraces to disk

Browse Source 
Implement rust-lang/compiler-team#578.

When an ICE is encountered on nightly releases, the new rustc panic
handler will also write the contents of the backtrace to disk. If any
`delay_span_bug`s are encountered, their backtrace is also added to the
file. The platform and rustc version will also be collected.
This commit is contained in:
Esteban Küber 2023-03-03 22:25:18 +00:00
parent 77e24f90f5
commit 8eb5843a59
30 changed files with 272 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
Cargo.lock
View File

@ -3488,6 +3488,7 @@ dependencies = [
"rustc_trait_selection",
"rustc_ty_utils",
"serde_json",
"time",
"tracing",
"windows",
]
@ -5142,6 +5143,33 @@ dependencies = [
name = "tier-check"
version = "0.1.0"
[[package]]
name = "time"
version = "0.3.22"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ea9e1b3cf1243ae005d9e74085d4d542f3125458f3a81af210d901dcd7411efd"
dependencies = [
"itoa",
"serde",
"time-core",
"time-macros",
]
[[package]]
name = "time-core"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7300fbefb4dadc1af235a9cef3737cea692a9d97e1b9cbcd4ebdae6f8868e6fb"
[[package]]
name = "time-macros"
version = "0.2.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "372950940a5f07bf38dbe211d7283c9e6d7327df53794992d293e534c733d09b"
dependencies = [
"time-core",
]
[[package]]
name = "tinystr"
version = "0.7.1"

2
compiler/rustc_codegen_ssa/src/back/write.rs
View File

@ -362,7 +362,7 @@ pub struct CodegenContext<B: WriteBackendMethods> {
impl<B: WriteBackendMethods> CodegenContext<B> {
pub fn create_diag_handler(&self) -> Handler {
Handler::with_emitter(true, None, Box::new(self.diag_emitter.clone()))
Handler::with_emitter(true, None, Box::new(self.diag_emitter.clone()), None)
}
pub fn config(&self, kind: ModuleKind) -> &ModuleConfig {

1
compiler/rustc_driver_impl/Cargo.toml
View File

@ -6,6 +6,7 @@ edition = "2021"
[lib]
[dependencies]
time = { version = "0.3", default-features = false, features = ["formatting", ] }
tracing = { version = "0.1.35" }
serde_json = "1.0.59"
rustc_log = { path = "../rustc_log" }

4
compiler/rustc_driver_impl/messages.ftl
View File

@ -3,7 +3,11 @@ driver_impl_ice_bug_report = we would appreciate a bug report: {$bug_report_url}
driver_impl_ice_exclude_cargo_defaults = some of the compiler flags provided by cargo are hidden
driver_impl_ice_flags = compiler flags: {$flags}
driver_impl_ice_path = please attach the file at `{$path}` to your bug report
driver_impl_ice_path_error = the ICE couldn't be written to `{$path}`: {$error}
driver_impl_ice_path_error_env = the environment variable `RUSTC_ICE` is set to `{$env_var}`
driver_impl_ice_version = rustc {$version} running on {$triple}
driver_impl_rlink_empty_version_number = The input does not contain version number
driver_impl_rlink_encoding_version_mismatch = .rlink file was produced with encoding version `{$version_array}`, but the current version is `{$rlink_version}`

80
compiler/rustc_driver_impl/src/lib.rs
View File

@ -7,6 +7,8 @@
#![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
#![feature(lazy_cell)]
#![feature(decl_macro)]
#![feature(ice_to_disk)]
#![feature(let_chains)]
#![recursion_limit = "256"]
#![allow(rustc::potential_query_instability)]
#![deny(rustc::untranslatable_diagnostic)]
@ -57,8 +59,11 @@ use std::panic::{self, catch_unwind};
use std::path::PathBuf;
use std::process::{self, Command, Stdio};
use std::str;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::OnceLock;
use std::time::Instant;
use std::time::{Instant, SystemTime};
use time::format_description::well_known::Rfc3339;
use time::OffsetDateTime;
#[allow(unused_macros)]
macro do_not_use_print($($t:tt)*) {
@ -294,6 +299,7 @@ fn run_compiler(
input: Input::File(PathBuf::new()),
output_file: ofile,
output_dir: odir,
ice_file: ice_path().clone(),
file_loader,
locale_resources: DEFAULT_LOCALE_RESOURCES,
lint_caps: Default::default(),
@ -1292,9 +1298,29 @@ pub fn catch_with_exit_code(f: impl FnOnce() -> interface::Result<()>) -> i32 {
}
}
/// Stores the default panic hook, from before [`install_ice_hook`] was called.
static DEFAULT_HOOK: OnceLock<Box<dyn Fn(&panic::PanicInfo<'_>) + Sync + Send + 'static>> =
OnceLock::new();
pub static ICE_PATH: OnceLock<Option<PathBuf>> = OnceLock::new();
pub fn ice_path() -> &'static Option<PathBuf> {
ICE_PATH.get_or_init(|| {
if !rustc_feature::UnstableFeatures::from_environment(None).is_nightly_build() {
return None;
}
if let Ok("0") = std::env::var("RUST_BACKTRACE").as_deref() {
return None;
}
let mut path = match std::env::var("RUSTC_ICE").as_deref() {
// Explicitly opting out of writing ICEs to disk.
Ok("0") => return None,
Ok(s) => PathBuf::from(s),
Err(_) => std::env::current_dir().unwrap_or_default(),
};
let now: OffsetDateTime = SystemTime::now().into();
let file_now = now.format(&Rfc3339).unwrap_or(String::new());
let pid = std::process::id();
path.push(format!("rustc-ice-{file_now}-{pid}.txt"));
Some(path)
})
}
/// Installs a panic hook that will print the ICE message on unexpected panics.
///
@ -1318,8 +1344,6 @@ pub fn install_ice_hook(bug_report_url: &'static str, extra_info: fn(&Handler))
std::env::set_var("RUST_BACKTRACE", "full");
}
let default_hook = DEFAULT_HOOK.get_or_init(panic::take_hook);
panic::set_hook(Box::new(move |info| {
// If the error was caused by a broken pipe then this is not a bug.
// Write the error and return immediately. See #98700.
@ -1336,7 +1360,7 @@ pub fn install_ice_hook(bug_report_url: &'static str, extra_info: fn(&Handler))
// Invoke the default handler, which prints the actual panic message and optionally a backtrace
// Don't do this for delayed bugs, which already emit their own more useful backtrace.
if !info.payload().is::<rustc_errors::DelayedBugPanic>() {
(*default_hook)(info);
std::panic_hook_with_disk_dump(info, ice_path().as_deref());
// Separate the output with an empty line
eprintln!();
@ -1368,7 +1392,7 @@ pub fn report_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str, extra_info:
false,
TerminalUrl::No,
));
let handler = rustc_errors::Handler::with_emitter(true, None, emitter);
let handler = rustc_errors::Handler::with_emitter(true, None, emitter, None);
// a .span_bug or .bug call has already printed what
// it wants to print.
@ -1379,10 +1403,40 @@ pub fn report_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str, extra_info:
}
handler.emit_note(session_diagnostics::IceBugReport { bug_report_url });
handler.emit_note(session_diagnostics::IceVersion {
version: util::version_str!().unwrap_or("unknown_version"),
triple: config::host_triple(),
});
let version = util::version_str!().unwrap_or("unknown_version");
let triple = config::host_triple();
static FIRST_PANIC: AtomicBool = AtomicBool::new(true);
let file = if let Some(path) = ice_path().as_ref() {
// Create the ICE dump target file.
match crate::fs::File::options().create(true).append(true).open(&path) {
Ok(mut file) => {
handler
.emit_note(session_diagnostics::IcePath { path: path.display().to_string() });
if FIRST_PANIC.swap(false, Ordering::SeqCst) {
let _ = write!(file, "\n\nrustc version: {version}\nplatform: {triple}");
}
Some(file)
}
Err(err) => {
// The path ICE couldn't be written to disk, provide feedback to the user as to why.
handler.emit_warning(session_diagnostics::IcePathError {
path: path.display().to_string(),
error: err.to_string(),
env_var: std::env::var("RUSTC_ICE")
.ok()
.map(|env_var| session_diagnostics::IcePathErrorEnv { env_var }),
});
handler.emit_note(session_diagnostics::IceVersion { version, triple });
None
}
}
} else {
handler.emit_note(session_diagnostics::IceVersion { version, triple });
None
};
if let Some((flags, excluded_cargo_defaults)) = extra_compiler_flags() {
handler.emit_note(session_diagnostics::IceFlags { flags: flags.join(" ") });
@ -1396,7 +1450,7 @@ pub fn report_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str, extra_info:
let num_frames = if backtrace { None } else { Some(2) };
interface::try_print_query_stack(&handler, num_frames);
interface::try_print_query_stack(&handler, num_frames, file);
// We don't trust this callback not to panic itself, so run it at the end after we're sure we've
// printed all the relevant info.

23
compiler/rustc_driver_impl/src/session_diagnostics.rs
View File

@ -1,4 +1,4 @@
use rustc_macros::Diagnostic;
use rustc_macros::{Diagnostic, Subdiagnostic};
#[derive(Diagnostic)]
#[diag(driver_impl_rlink_unable_to_read)]
@ -56,6 +56,27 @@ pub(crate) struct IceVersion<'a> {
pub triple: &'a str,
}
#[derive(Diagnostic)]
#[diag(driver_impl_ice_path)]
pub(crate) struct IcePath {
pub path: String,
}
#[derive(Diagnostic)]
#[diag(driver_impl_ice_path_error)]
pub(crate) struct IcePathError {
pub path: String,
pub error: String,
#[subdiagnostic]
pub env_var: Option<IcePathErrorEnv>,
}
#[derive(Subdiagnostic)]
#[note(driver_impl_ice_path_error_env)]
pub(crate) struct IcePathErrorEnv {
pub env_var: String,
}
#[derive(Diagnostic)]
#[diag(driver_impl_ice_flags)]
pub(crate) struct IceFlags {

7
compiler/rustc_error_messages/src/lib.rs
View File

@ -354,6 +354,13 @@ impl DiagnosticMessage {
}
}
}
pub fn as_str(&self) -> Option<&str> {
match self {
DiagnosticMessage::Eager(s) | DiagnosticMessage::Str(s) => Some(s),
DiagnosticMessage::FluentIdentifier(_, _) => None,
}
}
}
impl From<String> for DiagnosticMessage {

2
compiler/rustc_errors/src/json/tests.rs
View File

@ -64,7 +64,7 @@ fn test_positions(code: &str, span: (u32, u32), expected_output: SpanTestData) {
);
let span = Span::with_root_ctxt(BytePos(span.0), BytePos(span.1));
let handler = Handler::with_emitter(true, None, Box::new(je));
let handler = Handler::with_emitter(true, None, Box::new(je), None);
handler.span_err(span, "foo");
let bytes = output.lock().unwrap();

31
compiler/rustc_errors/src/lib.rs
View File

@ -47,9 +47,10 @@ use std::borrow::Cow;
use std::error::Report;
use std::fmt;
use std::hash::Hash;
use std::io::Write;
use std::num::NonZeroUsize;
use std::panic;
use std::path::Path;
use std::path::{Path, PathBuf};
use termcolor::{Color, ColorSpec};
@ -461,6 +462,10 @@ struct HandlerInner {
///
/// [RFC-2383]: https://rust-lang.github.io/rfcs/2383-lint-reasons.html
fulfilled_expectations: FxHashSet<LintExpectationId>,
/// The file where the ICE information is stored. This allows delayed_span_bug backtraces to be
/// stored along side the main panic backtrace.
ice_file: Option<PathBuf>,
}
/// A key denoting where from a diagnostic was stashed.
@ -550,6 +555,7 @@ impl Handler {
sm: Option<Lrc<SourceMap>>,
fluent_bundle: Option<Lrc<FluentBundle>>,
fallback_bundle: LazyFallbackBundle,
ice_file: Option<PathBuf>,
) -> Self {
Self::with_tty_emitter_and_flags(
color_config,
@ -557,6 +563,7 @@ impl Handler {
fluent_bundle,
fallback_bundle,
HandlerFlags { can_emit_warnings, treat_err_as_bug, ..Default::default() },
ice_file,
)
}
@ -566,6 +573,7 @@ impl Handler {
fluent_bundle: Option<Lrc<FluentBundle>>,
fallback_bundle: LazyFallbackBundle,
flags: HandlerFlags,
ice_file: Option<PathBuf>,
) -> Self {
let emitter = Box::new(EmitterWriter::stderr(
color_config,
@ -579,23 +587,26 @@ impl Handler {
flags.track_diagnostics,
TerminalUrl::No,
));
Self::with_emitter_and_flags(emitter, flags)
Self::with_emitter_and_flags(emitter, flags, ice_file)
}
pub fn with_emitter(
can_emit_warnings: bool,
treat_err_as_bug: Option<NonZeroUsize>,
emitter: Box<dyn Emitter + sync::Send>,
ice_file: Option<PathBuf>,
) -> Self {
Handler::with_emitter_and_flags(
emitter,
HandlerFlags { can_emit_warnings, treat_err_as_bug, ..Default::default() },
ice_file,
)
}
pub fn with_emitter_and_flags(
emitter: Box<dyn Emitter + sync::Send>,
flags: HandlerFlags,
ice_file: Option<PathBuf>,
) -> Self {
Self {
flags,
@ -618,6 +629,7 @@ impl Handler {
check_unstable_expect_diagnostics: false,
unstable_expect_diagnostics: Vec::new(),
fulfilled_expectations: Default::default(),
ice_file,
}),
}
}
@ -1657,8 +1669,21 @@ impl HandlerInner {
explanation: impl Into<DiagnosticMessage> + Copy,
) {
let mut no_bugs = true;
// If backtraces are enabled, also print the query stack
let backtrace = std::env::var_os("RUST_BACKTRACE").map_or(true, |x| &x != "0");
for bug in bugs {
let mut bug = bug.decorate();
if let Some(file) = self.ice_file.as_ref()
&& let Ok(mut out) = std::fs::File::options().append(true).open(file)
{
let _ = write!(
&mut out,
"\n\ndelayed span bug: {}\n{}",
bug.inner.styled_message().iter().filter_map(|(msg, _)| msg.as_str()).collect::<String>(),
&bug.note
);
}
let mut bug =
if backtrace || self.ice_file.is_none() { bug.decorate() } else { bug.inner };
if no_bugs {
// Put the overall explanation before the `DelayedBug`s, to

2
compiler/rustc_expand/src/tests.rs
View File

@ -161,7 +161,7 @@ fn test_harness(file_text: &str, span_labels: Vec<SpanLabel>, expected_output: &
false,
TerminalUrl::No,
);
let handler = Handler::with_emitter(true, None, Box::new(emitter));
let handler = Handler::with_emitter(true, None, Box::new(emitter), None);
#[allow(rustc::untranslatable_diagnostic)]
handler.span_err(msp, "foo");

11
compiler/rustc_interface/src/interface.rs
View File

@ -251,6 +251,7 @@ pub struct Config {
pub input: Input,
pub output_dir: Option<PathBuf>,
pub output_file: Option<OutFileName>,
pub ice_file: Option<PathBuf>,
pub file_loader: Option<Box<dyn FileLoader + Send + Sync>>,
pub locale_resources: &'static [&'static str],
@ -315,6 +316,7 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
config.lint_caps,
config.make_codegen_backend,
registry.clone(),
config.ice_file,
);
if let Some(parse_sess_created) = config.parse_sess_created {
@ -346,7 +348,11 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
)
}
pub fn try_print_query_stack(handler: &Handler, num_frames: Option<usize>) {
pub fn try_print_query_stack(
handler: &Handler,
num_frames: Option<usize>,
file: Option<std::fs::File>,
) {
eprintln!("query stack during panic:");
// Be careful relying on global state here: this code is called from
@ -358,7 +364,8 @@ pub fn try_print_query_stack(handler: &Handler, num_frames: Option<usize>) {
QueryCtxt::new(icx.tcx),
icx.query,
handler,
num_frames
num_frames,
file,
))
} else {
0

1
compiler/rustc_interface/src/tests.rs
View File

@ -67,6 +67,7 @@ fn mk_session(handler: &mut EarlyErrorHandler, matches: getopts::Matches) -> (Se
None,
None,
"",
None,
);
(sess, cfg)
}

2
compiler/rustc_interface/src/util.rs
View File

@ -70,6 +70,7 @@ pub fn create_session(
Box<dyn FnOnce(&config::Options) -> Box<dyn CodegenBackend> + Send>,
>,
descriptions: Registry,
ice_file: Option<PathBuf>,
) -> (Session, Box<dyn CodegenBackend>) {
let codegen_backend = if let Some(make_codegen_backend) = make_codegen_backend {
make_codegen_backend(&sopts)
@ -111,6 +112,7 @@ pub fn create_session(
file_loader,
target_override,
rustc_version_str().unwrap_or("unknown"),
ice_file,
);
codegen_backend.init(&sess);

45
compiler/rustc_query_system/src/query/job.rs
View File

@ -13,6 +13,7 @@ use rustc_session::Session;
use rustc_span::Span;
use std::hash::Hash;
use std::io::Write;
use std::num::NonZeroU64;
#[cfg(parallel_compiler)]
@ -617,30 +618,50 @@ pub fn print_query_stack<Qcx: QueryContext>(
mut current_query: Option<QueryJobId>,
handler: &Handler,
num_frames: Option<usize>,
mut file: Option<std::fs::File>,
) -> usize {
// Be careful relying on global state here: this code is called from
// a panic hook, which means that the global `Handler` may be in a weird
// state if it was responsible for triggering the panic.
let mut i = 0;
let mut count_printed = 0;
let mut count_total = 0;
let query_map = qcx.try_collect_active_jobs();
if let Some(ref mut file) = file {
let _ = writeln!(file, "\n\nquery stack during panic:");
}
while let Some(query) = current_query {
if Some(i) == num_frames {
break;
}
let Some(query_info) = query_map.as_ref().and_then(|map| map.get(&query)) else {
break;
};
let mut diag = Diagnostic::new(
Level::FailureNote,
format!("#{} [{:?}] {}", i, query_info.query.dep_kind, query_info.query.description),
);
diag.span = query_info.job.span.into();
handler.force_print_diagnostic(diag);
if Some(count_printed) < num_frames || num_frames.is_none() {
// Only print to stderr as many stack frames as `num_frames` when present.
let mut diag = Diagnostic::new(
Level::FailureNote,
format!(
"#{} [{:?}] {}",
count_printed, query_info.query.dep_kind, query_info.query.description
),
);
diag.span = query_info.job.span.into();
handler.force_print_diagnostic(diag);
count_printed += 1;
}
if let Some(ref mut file) = file {
let _ = writeln!(
file,
"#{} [{:?}] {}",
count_total, query_info.query.dep_kind, query_info.query.description
);
}
current_query = query_info.job.parent;
i += 1;
count_total += 1;
}
i
if let Some(ref mut file) = file {
let _ = writeln!(file, "end of query stack");
}
count_printed
}

13
compiler/rustc_session/src/parse.rs
View File

@ -231,6 +231,7 @@ impl ParseSess {
Some(sm.clone()),
None,
fallback_bundle,
None,
);
ParseSess::with_span_handler(handler, sm)
}
@ -261,12 +262,20 @@ impl ParseSess {
pub fn with_silent_emitter(fatal_note: Option<String>) -> Self {
let fallback_bundle = fallback_fluent_bundle(Vec::new(), false);
let sm = Lrc::new(SourceMap::new(FilePathMapping::empty()));
let fatal_handler =
Handler::with_tty_emitter(ColorConfig::Auto, false, None, None, None, fallback_bundle);
let fatal_handler = Handler::with_tty_emitter(
ColorConfig::Auto,
false,
None,
None,
None,
fallback_bundle,
None,
);
let handler = Handler::with_emitter(
false,
None,
Box::new(SilentEmitter { fatal_handler, fatal_note }),
None,
);
ParseSess::with_span_handler(handler, sm)
}

6
compiler/rustc_session/src/session.rs
View File

@ -1392,6 +1392,7 @@ pub fn build_session(
file_loader: Option<Box<dyn FileLoader + Send + Sync + 'static>>,
target_override: Option<Target>,
cfg_version: &'static str,
ice_file: Option<PathBuf>,
) -> Session {
// FIXME: This is not general enough to make the warning lint completely override
// normal diagnostic warnings, since the warning lint can also be denied and changed
@ -1440,6 +1441,7 @@ pub fn build_session(
let span_diagnostic = rustc_errors::Handler::with_emitter_and_flags(
emitter,
sopts.unstable_opts.diagnostic_handler_flags(can_emit_warnings),
ice_file,
);
let self_profiler = if let SwitchWithOptPath::Enabled(ref d) = sopts.unstable_opts.self_profile
@ -1731,7 +1733,7 @@ pub struct EarlyErrorHandler {
impl EarlyErrorHandler {
pub fn new(output: ErrorOutputType) -> Self {
let emitter = mk_emitter(output);
Self { handler: rustc_errors::Handler::with_emitter(true, None, emitter) }
Self { handler: rustc_errors::Handler::with_emitter(true, None, emitter, None) }
}
pub fn abort_if_errors(&self) {
@ -1745,7 +1747,7 @@ impl EarlyErrorHandler {
self.handler.abort_if_errors();
let emitter = mk_emitter(output);
self.handler = Handler::with_emitter(true, None, emitter);
self.handler = Handler::with_emitter(true, None, emitter, None);
}
#[allow(rustc::untranslatable_diagnostic)]

3
library/std/src/lib.rs
View File

@ -604,6 +604,9 @@ pub mod alloc;
// Private support modules
mod panicking;
#[unstable(feature = "ice_to_disk", issue = "none")]
pub use panicking::panic_hook_with_disk_dump;
#[path = "../../backtrace/src/lib.rs"]
#[allow(dead_code, unused_attributes, fuzzy_provenance_casts)]
mod backtrace_rs;

38
library/std/src/panicking.rs
View File

@ -234,7 +234,16 @@ where
*hook = Hook::Custom(Box::new(move |info| hook_fn(&prev, info)));
}
/// The default panic handler.
fn default_hook(info: &PanicInfo<'_>) {
panic_hook_with_disk_dump(info, None)
}
#[unstable(feature = "ice_to_disk", issue = "none")]
/// The implementation of the default panic handler.
///
/// It can also write the backtrace to a given `path`. This functionality is used only by `rustc`.
pub fn panic_hook_with_disk_dump(info: &PanicInfo<'_>, path: Option<&crate::path::Path>) {
// If this is a double panic, make sure that we print a backtrace
// for this panic. Otherwise only print it if logging is enabled.
let backtrace = if panic_count::get_count() >= 2 {
@ -256,7 +265,7 @@ fn default_hook(info: &PanicInfo<'_>) {
let thread = thread_info::current_thread();
let name = thread.as_ref().and_then(|t| t.name()).unwrap_or("<unnamed>");
let write = |err: &mut dyn crate::io::Write| {
let write = |err: &mut dyn crate::io::Write, backtrace: Option<BacktraceStyle>| {
let _ = writeln!(err, "thread '{name}' panicked at '{msg}', {location}");
static FIRST_PANIC: AtomicBool = AtomicBool::new(true);
@ -270,10 +279,19 @@ fn default_hook(info: &PanicInfo<'_>) {
}
Some(BacktraceStyle::Off) => {
if FIRST_PANIC.swap(false, Ordering::SeqCst) {
let _ = writeln!(
err,
"note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace"
);
if let Some(path) = path {
let _ = writeln!(
err,
"note: a backtrace for this error was stored at `{}`",
path.display(),
);
} else {
let _ = writeln!(
err,
"note: run with `RUST_BACKTRACE=1` environment variable to display a \
backtrace"
);
}
}
}
// If backtraces aren't supported, do nothing.
@ -281,11 +299,17 @@ fn default_hook(info: &PanicInfo<'_>) {
}
};
if let Some(path) = path
&& let Ok(mut out) = crate::fs::File::options().create(true).write(true).open(&path)
{
write(&mut out, BacktraceStyle::full());
}
if let Some(local) = set_output_capture(None) {
write(&mut *local.lock().unwrap_or_else(|e| e.into_inner()));
write(&mut *local.lock().unwrap_or_else(|e| e.into_inner()), backtrace);
set_output_capture(Some(local));
} else if let Some(mut out) = panic_output() {
write(&mut out);
write(&mut out, backtrace);
}
}

2
src/librustdoc/core.rs
View File

@ -176,6 +176,7 @@ pub(crate) fn new_handler(
rustc_errors::Handler::with_emitter_and_flags(
emitter,
unstable_opts.diagnostic_handler_flags(true),
None,
)
}
@ -296,6 +297,7 @@ pub(crate) fn create_config(
}),
make_codegen_backend: None,
registry: rustc_driver::diagnostics_registry(),
ice_file: None,
}
}

5
src/librustdoc/doctest.rs
View File

@ -108,6 +108,7 @@ pub(crate) fn run(options: RustdocOptions) -> Result<(), ErrorGuaranteed> {
override_queries: None,
make_codegen_backend: None,
registry: rustc_driver::diagnostics_registry(),
ice_file: None,
};
let test_args = options.test_args.clone();
@ -586,7 +587,7 @@ pub(crate) fn make_test(
);
// FIXME(misdreavus): pass `-Z treat-err-as-bug` to the doctest parser
let handler = Handler::with_emitter(false, None, Box::new(emitter));
let handler = Handler::with_emitter(false, None, Box::new(emitter), None);
let sess = ParseSess::with_span_handler(handler, sm);
let mut found_main = false;
@ -773,7 +774,7 @@ fn check_if_attr_is_complete(source: &str, edition: Edition) -> bool {
TerminalUrl::No,
);
let handler = Handler::with_emitter(false, None, Box::new(emitter));
let handler = Handler::with_emitter(false, None, Box::new(emitter), None);
let sess = ParseSess::with_span_handler(handler, sm);
let mut parser =
match maybe_new_parser_from_source_str(&sess, filename, source.to_owned()) {

2
src/librustdoc/passes/lint/check_code_block_syntax.rs
View File

@ -40,7 +40,7 @@ fn check_rust_syntax(
let emitter = BufferEmitter { buffer: Lrc::clone(&buffer), fallback_bundle };
let sm = Lrc::new(SourceMap::new(FilePathMapping::empty()));
let handler = Handler::with_emitter(false, None, Box::new(emitter));
let handler = Handler::with_emitter(false, None, Box::new(emitter), None);
let source = dox[code_block.code].to_owned();
let sess = ParseSess::with_span_handler(handler, sm);

2
src/tools/clippy/clippy_lints/src/doc.rs
View File

@ -729,7 +729,7 @@ fn check_code(cx: &LateContext<'_>, text: &str, edition: Edition, span: Span) {
false,
TerminalUrl::No,
);
let handler = Handler::with_emitter(false, None, Box::new(emitter));
let handler = Handler::with_emitter(false, None, Box::new(emitter), None);
let sess = ParseSess::with_span_handler(handler, sm);
let mut parser = match maybe_new_parser_from_source_str(&sess, filename, code) {

2
src/tools/compiletest/src/header.rs
View File

@ -232,7 +232,7 @@ impl TestProps {
aux_builds: vec![],
aux_crates: vec![],
revisions: vec![],
rustc_env: vec![],
rustc_env: vec![("RUSTC_ICE".to_string(), "0".to_string())],
unset_rustc_env: vec![],
exec_env: vec![],
unset_exec_env: vec![],

3
src/tools/rustfmt/src/parse/session.rs
View File

@ -162,6 +162,7 @@ fn default_handler(
ignore_path_set,
can_reset,
}),
None,
)
}
@ -233,7 +234,7 @@ impl ParseSess {
}
pub(crate) fn set_silent_emitter(&mut self) {
self.parse_sess.span_diagnostic = Handler::with_emitter(true, None, silent_emitter());
self.parse_sess.span_diagnostic = Handler::with_emitter(true, None, silent_emitter(), None);
}
pub(crate) fn span_to_filename(&self, span: Span) -> FileName {

3
src/tools/tidy/src/deps.rs
View File

@ -253,6 +253,9 @@ const PERMITTED_RUSTC_DEPENDENCIES: &[&str] = &[
"thiserror-impl",
"thorin-dwp",
"thread_local",
"time",
"time-core",
"time-macros",
"tinystr",
"tinyvec",
"tinyvec_macros",

1
tests/run-make-fulldeps/issue-19371/foo.rs
View File

@ -52,6 +52,7 @@ fn compile(code: String, output: PathBuf, sysroot: PathBuf) {
input,
output_file: Some(OutFileName::Real(output)),
output_dir: None,
ice_file: None,
file_loader: None,
locale_resources: &[],
lint_caps: Default::default(),

2
tests/run-make/exit-code/Makefile
View File

@ -5,7 +5,7 @@ all:
$(RUSTC) success.rs; [ $$? -eq 0 ]
$(RUSTC) --invalid-arg-foo; [ $$? -eq 1 ]
$(RUSTC) compile-error.rs; [ $$? -eq 1 ]
$(RUSTC) -Ztreat-err-as-bug compile-error.rs; [ $$? -eq 101 ]
RUSTC_ICE=0 $(RUSTC) -Ztreat-err-as-bug compile-error.rs; [ $$? -eq 101 ]
$(RUSTDOC) -o $(TMPDIR)/exit-code success.rs; [ $$? -eq 0 ]
$(RUSTDOC) --invalid-arg-foo; [ $$? -eq 1 ]
$(RUSTDOC) compile-error.rs; [ $$? -eq 1 ]

2
tests/run-make/short-ice/check.sh
View File

@ -1,5 +1,5 @@
#!/bin/sh
export RUSTC_ICE=0
RUST_BACKTRACE=1 $RUSTC src/lib.rs -Z treat-err-as-bug=1 1>$TMPDIR/rust-test-1.log 2>&1
RUST_BACKTRACE=full $RUSTC src/lib.rs -Z treat-err-as-bug=1 1>$TMPDIR/rust-test-2.log 2>&1

1
tests/rustdoc-ui/ice-bug-report-url.rs
View File

@ -1,4 +1,5 @@
// compile-flags: -Ztreat-err-as-bug
// rustc-env:RUSTC_ICE=0
// failure-status: 101
// error-pattern: aborting due to
// error-pattern: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-rustdoc&template=ice.md

2
tests/rustdoc-ui/ice-bug-report-url.stderr
View File

@ -1,5 +1,5 @@
error: expected one of `->`, `where`, or `{`, found `<eof>`
--> $DIR/ice-bug-report-url.rs:13:10
--> $DIR/ice-bug-report-url.rs:14:10
|
LL | fn wrong()
| ^ expected one of `->`, `where`, or `{`