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Auto merge of #106730 - Nilstrieb:rollup-f7p8dsa, r=Nilstrieb

Browse source 
Rollup of 9 pull requests

Successful merges:

 - #106321 (Collect and emit proper backtraces for `delay_span_bug`s)
 - #106397 (Check `impl`'s `where` clauses in `consider_impl_candidate` in experimental solver)
 - #106427 (Improve fluent error messages)
 - #106570 (add tests for div_duration_* functions)
 - #106648 (Polymorphization cleanup)
 - #106664 (Remove unnecessary lseek syscall when using std::fs::read)
 - #106709 (Disable "split dwarf inlining" by default.)
 - #106715 (Autolabel and ping wg for changes to new solver)
 - #106717 (fix typo LocalItemId -> ItemLocalId)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
This commit is contained in:
bors 2023-01-11 17:01:44 +00:00
parent b22c152958 9aeef61820
commit ef4046e4f3
25 changed files with 551 additions and 199 deletions
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3
compiler/rustc_const_eval/src/interpret/util.rs
View file

@ -40,12 +40,11 @@ fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
let index = index
.try_into()
.expect("more generic parameters than can fit into a `u32`");
let is_used = unused_params.contains(index).map_or(true, |unused| !unused);
// Only recurse when generic parameters in fns, closures and generators
// are used and require substitution.
// Just in case there are closures or generators within this subst,
// recurse.
if is_used && subst.needs_subst() {
if unused_params.is_used(index) && subst.needs_subst() {
return subst.visit_with(self);
}
}

6
compiler/rustc_driver/src/lib.rs
View file

@ -1196,8 +1196,8 @@ pub fn catch_with_exit_code(f: impl FnOnce() -> interface::Result<()>) -> i32 {
};
// Invoke the default handler, which prints the actual panic message and optionally a backtrace
// Don't do this for `GoodPathBug`, which already emits its own more useful backtrace.
if !info.payload().is::<rustc_errors::GoodPathBug>() {
// Don't do this for delayed bugs, which already emit their own more useful backtrace.
if !info.payload().is::<rustc_errors::DelayedBugPanic>() {
(*DEFAULT_HOOK)(info);
// Separate the output with an empty line
@ -1235,7 +1235,7 @@ pub fn report_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str) {
// a .span_bug or .bug call has already printed what
// it wants to print.
if !info.payload().is::<rustc_errors::ExplicitBug>()
&& !info.payload().is::<rustc_errors::GoodPathBug>()
&& !info.payload().is::<rustc_errors::DelayedBugPanic>()
{
let mut d = rustc_errors::Diagnostic::new(rustc_errors::Level::Bug, "unexpected panic");
handler.emit_diagnostic(&mut d);

11
compiler/rustc_errors/src/emitter.rs
View file

@ -28,6 +28,7 @@
use rustc_span::hygiene::{ExpnKind, MacroKind};
use std::borrow::Cow;
use std::cmp::{max, min, Reverse};
use std::error::Report;
use std::io::prelude::*;
use std::io::{self, IsTerminal};
use std::iter;
@ -250,7 +251,7 @@ fn primary_span_formatted<'a>(
let mut primary_span = diag.span.clone();
let suggestions = diag.suggestions.as_deref().unwrap_or(&[]);
if let Some((sugg, rest)) = suggestions.split_first() {
let msg = self.translate_message(&sugg.msg, fluent_args);
let msg = self.translate_message(&sugg.msg, fluent_args).map_err(Report::new).unwrap();
if rest.is_empty() &&
// ^ if there is only one suggestion
// don't display multi-suggestions as labels
@ -1325,7 +1326,7 @@ fn style_or_override(style: Style, override_: Option<Style>) -> Style {
// very *weird* formats
// see?
for (text, style) in msg.iter() {
let text = self.translate_message(text, args);
let text = self.translate_message(text, args).map_err(Report::new).unwrap();
let lines = text.split('\n').collect::<Vec<_>>();
if lines.len() > 1 {
for (i, line) in lines.iter().enumerate() {
@ -1387,7 +1388,7 @@ fn emit_message_default(
label_width += 2;
}
for (text, _) in msg.iter() {
let text = self.translate_message(text, args);
let text = self.translate_message(text, args).map_err(Report::new).unwrap();
// Account for newlines to align output to its label.
for (line, text) in normalize_whitespace(&text).lines().enumerate() {
buffer.append(
@ -2301,7 +2302,9 @@ fn add_annotation_to_file(
hi.col_display += 1;
}
let label = label.as_ref().map(|m| emitter.translate_message(m, args).to_string());
let label = label.as_ref().map(|m| {
emitter.translate_message(m, args).map_err(Report::new).unwrap().to_string()
});
if lo.line != hi.line {
let ml = MultilineAnnotation {

137
compiler/rustc_errors/src/error.rs Normal file
View file

@ -0,0 +1,137 @@
use rustc_error_messages::{
fluent_bundle::resolver::errors::{ReferenceKind, ResolverError},
FluentArgs, FluentError,
};
use std::borrow::Cow;
use std::error::Error;
use std::fmt;
#[derive(Debug)]
pub enum TranslateError<'args> {
One {
id: &'args Cow<'args, str>,
args: &'args FluentArgs<'args>,
kind: TranslateErrorKind<'args>,
},
Two {
primary: Box<TranslateError<'args>>,
fallback: Box<TranslateError<'args>>,
},
}
impl<'args> TranslateError<'args> {
pub fn message(id: &'args Cow<'args, str>, args: &'args FluentArgs<'args>) -> Self {
Self::One { id, args, kind: TranslateErrorKind::MessageMissing }
}
pub fn primary(id: &'args Cow<'args, str>, args: &'args FluentArgs<'args>) -> Self {
Self::One { id, args, kind: TranslateErrorKind::PrimaryBundleMissing }
}
pub fn attribute(
id: &'args Cow<'args, str>,
args: &'args FluentArgs<'args>,
attr: &'args str,
) -> Self {
Self::One { id, args, kind: TranslateErrorKind::AttributeMissing { attr } }
}
pub fn value(id: &'args Cow<'args, str>, args: &'args FluentArgs<'args>) -> Self {
Self::One { id, args, kind: TranslateErrorKind::ValueMissing }
}
pub fn fluent(
id: &'args Cow<'args, str>,
args: &'args FluentArgs<'args>,
errs: Vec<FluentError>,
) -> Self {
Self::One { id, args, kind: TranslateErrorKind::Fluent { errs } }
}
pub fn and(self, fallback: TranslateError<'args>) -> TranslateError<'args> {
Self::Two { primary: Box::new(self), fallback: Box::new(fallback) }
}
}
#[derive(Debug)]
pub enum TranslateErrorKind<'args> {
MessageMissing,
PrimaryBundleMissing,
AttributeMissing { attr: &'args str },
ValueMissing,
Fluent { errs: Vec<FluentError> },
}
impl fmt::Display for TranslateError<'_> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
use TranslateErrorKind::*;
match self {
Self::One { id, args, kind } => {
writeln!(f, "failed while formatting fluent string `{id}`: ")?;
match kind {
MessageMissing => writeln!(f, "message was missing")?,
PrimaryBundleMissing => writeln!(f, "the primary bundle was missing")?,
AttributeMissing { attr } => {
writeln!(f, "the attribute `{attr}` was missing")?;
writeln!(f, "help: add `.{attr} = <message>`")?;
}
ValueMissing => writeln!(f, "the value was missing")?,
Fluent { errs } => {
for err in errs {
match err {
FluentError::ResolverError(ResolverError::Reference(
ReferenceKind::Message { id, .. }
| ReferenceKind::Variable { id, .. },
)) => {
if args.iter().any(|(arg_id, _)| arg_id == id) {
writeln!(
f,
"argument `{id}` exists but was not referenced correctly"
)?;
writeln!(f, "help: try using `{{${id}}}` instead")?;
} else {
writeln!(
f,
"the fluent string has an argument `{id}` that was not found."
)?;
let vars: Vec<&str> =
args.iter().map(|(a, _v)| a).collect();
match &*vars {
[] => writeln!(f, "help: no arguments are available")?,
[one] => writeln!(
f,
"help: the argument `{one}` is available"
)?,
[first, middle @ .., last] => {
write!(f, "help: the arguments `{first}`")?;
for a in middle {
write!(f, ", `{a}`")?;
}
writeln!(f, " and `{last}` are available")?;
}
}
}
}
_ => writeln!(f, "{err}")?,
}
}
}
}
}
// If someone cares about primary bundles, they'll probably notice it's missing
// regardless or will be using `debug_assertions`
// so we skip the arm below this one to avoid confusing the regular user.
Self::Two { primary: box Self::One { kind: PrimaryBundleMissing, .. }, fallback } => {
fmt::Display::fmt(fallback, f)?;
}
Self::Two { primary, fallback } => {
writeln!(
f,
"first, fluent formatting using the primary bundle failed:\n {primary}\n \
while attempting to recover by using the fallback bundle instead, another error occurred:\n{fallback}"
)?;
}
}
Ok(())
}
}
impl Error for TranslateError<'_> {}

9
compiler/rustc_errors/src/json.rs
View file

@ -24,6 +24,7 @@
use rustc_error_messages::FluentArgs;
use rustc_span::hygiene::ExpnData;
use rustc_span::Span;
use std::error::Report;
use std::io::{self, Write};
use std::path::Path;
use std::sync::{Arc, Mutex};
@ -321,7 +322,8 @@ impl Diagnostic {
fn from_errors_diagnostic(diag: &crate::Diagnostic, je: &JsonEmitter) -> Diagnostic {
let args = to_fluent_args(diag.args());
let sugg = diag.suggestions.iter().flatten().map(|sugg| {
let translated_message = je.translate_message(&sugg.msg, &args);
let translated_message =
je.translate_message(&sugg.msg, &args).map_err(Report::new).unwrap();
Diagnostic {
message: translated_message.to_string(),
code: None,
@ -411,7 +413,10 @@ fn from_span_label(
Self::from_span_etc(
span.span,
span.is_primary,
span.label.as_ref().map(|m| je.translate_message(m, args)).map(|m| m.to_string()),
span.label
.as_ref()
.map(|m| je.translate_message(m, args).unwrap())
.map(|m| m.to_string()),
suggestion,
je,
)

55
compiler/rustc_errors/src/lib.rs
View file

@ -11,6 +11,10 @@
#![feature(never_type)]
#![feature(result_option_inspect)]
#![feature(rustc_attrs)]
#![feature(yeet_expr)]
#![feature(try_blocks)]
#![feature(box_patterns)]
#![feature(error_reporter)]
#![allow(incomplete_features)]
#[macro_use]
@ -40,8 +44,8 @@
use rustc_span::HashStableContext;
use rustc_span::{Loc, Span};
use std::any::Any;
use std::borrow::Cow;
use std::error::Report;
use std::fmt;
use std::hash::Hash;
use std::num::NonZeroUsize;
@ -55,11 +59,14 @@
mod diagnostic_builder;
mod diagnostic_impls;
pub mod emitter;
pub mod error;
pub mod json;
mod lock;
pub mod registry;
mod snippet;
mod styled_buffer;
#[cfg(test)]
mod tests;
pub mod translation;
pub use diagnostic_builder::IntoDiagnostic;
@ -364,9 +371,9 @@ fn push_trailing(
/// or `.span_bug` rather than a failed assertion, etc.
pub struct ExplicitBug;
/// Signifies that the compiler died with an explicit call to `.delay_good_path_bug`
/// Signifies that the compiler died with an explicit call to `.delay_*_bug`
/// rather than a failed assertion, etc.
pub struct GoodPathBug;
pub struct DelayedBugPanic;
pub use diagnostic::{
AddToDiagnostic, DecorateLint, Diagnostic, DiagnosticArg, DiagnosticArgValue, DiagnosticId,
@ -399,7 +406,7 @@ struct HandlerInner {
warn_count: usize,
deduplicated_err_count: usize,
emitter: Box<dyn Emitter + sync::Send>,
delayed_span_bugs: Vec<Diagnostic>,
delayed_span_bugs: Vec<DelayedDiagnostic>,
delayed_good_path_bugs: Vec<DelayedDiagnostic>,
/// This flag indicates that an expected diagnostic was emitted and suppressed.
/// This is used for the `delayed_good_path_bugs` check.
@ -505,11 +512,7 @@ fn drop(&mut self) {
if !self.has_errors() {
let bugs = std::mem::replace(&mut self.delayed_span_bugs, Vec::new());
self.flush_delayed(
bugs,
"no errors encountered even though `delay_span_bug` issued",
ExplicitBug,
);
self.flush_delayed(bugs, "no errors encountered even though `delay_span_bug` issued");
}
// FIXME(eddyb) this explains what `delayed_good_path_bugs` are!
@ -520,9 +523,8 @@ fn drop(&mut self) {
if !self.has_any_message() && !self.suppressed_expected_diag {
let bugs = std::mem::replace(&mut self.delayed_good_path_bugs, Vec::new());
self.flush_delayed(
bugs.into_iter().map(DelayedDiagnostic::decorate),
bugs,
"no warnings or errors encountered even though `delayed_good_path_bugs` issued",
GoodPathBug,
);
}
@ -622,7 +624,14 @@ pub fn eagerly_translate<'a>(
) -> SubdiagnosticMessage {
let inner = self.inner.borrow();
let args = crate::translation::to_fluent_args(args);
SubdiagnosticMessage::Eager(inner.emitter.translate_message(&message, &args).to_string())
SubdiagnosticMessage::Eager(
inner
.emitter
.translate_message(&message, &args)
.map_err(Report::new)
.unwrap()
.to_string(),
)
}
// This is here to not allow mutation of flags;
@ -1223,11 +1232,7 @@ pub fn steal_fulfilled_expectation_ids(&self) -> FxHashSet<LintExpectationId> {
pub fn flush_delayed(&self) {
let mut inner = self.inner.lock();
let bugs = std::mem::replace(&mut inner.delayed_span_bugs, Vec::new());
inner.flush_delayed(
bugs,
"no errors encountered even though `delay_span_bug` issued",
ExplicitBug,
);
inner.flush_delayed(bugs, "no errors encountered even though `delay_span_bug` issued");
}
}
@ -1287,7 +1292,9 @@ fn emit_diagnostic(&mut self, diagnostic: &mut Diagnostic) -> Option<ErrorGuaran
// once *any* errors were emitted (and truncate `delayed_span_bugs`
// when an error is first emitted, also), but maybe there's a case
// in which that's not sound? otherwise this is really inefficient.
self.delayed_span_bugs.push(diagnostic.clone());
let backtrace = std::backtrace::Backtrace::force_capture();
self.delayed_span_bugs
.push(DelayedDiagnostic::with_backtrace(diagnostic.clone(), backtrace));
if !self.flags.report_delayed_bugs {
return Some(ErrorGuaranteed::unchecked_claim_error_was_emitted());
@ -1562,7 +1569,6 @@ fn delay_span_bug(
}
let mut diagnostic = Diagnostic::new(Level::DelayedBug, msg);
diagnostic.set_span(sp.into());
diagnostic.note(&format!("delayed at {}", std::panic::Location::caller()));
self.emit_diagnostic(&mut diagnostic).unwrap()
}
@ -1605,12 +1611,13 @@ fn bug(&mut self, msg: impl Into<DiagnosticMessage>) -> ! {
fn flush_delayed(
&mut self,
bugs: impl IntoIterator<Item = Diagnostic>,
bugs: impl IntoIterator<Item = DelayedDiagnostic>,
explanation: impl Into<DiagnosticMessage> + Copy,
panic_with: impl Any + Send + 'static,
) {
let mut no_bugs = true;
for mut bug in bugs {
for bug in bugs {
let mut bug = bug.decorate();
if no_bugs {
// Put the overall explanation before the `DelayedBug`s, to
// frame them better (e.g. separate warnings from them).
@ -1633,9 +1640,9 @@ fn flush_delayed(
self.emit_diagnostic(&mut bug);
}
// Panic with `ExplicitBug` to avoid "unexpected panic" messages.
// Panic with `DelayedBugPanic` to avoid "unexpected panic" messages.
if !no_bugs {
panic::panic_any(panic_with);
panic::panic_any(DelayedBugPanic);
}
}

188
compiler/rustc_errors/src/tests.rs Normal file
View file

@ -0,0 +1,188 @@
use crate::error::{TranslateError, TranslateErrorKind};
use crate::fluent_bundle::*;
use crate::translation::Translate;
use crate::FluentBundle;
use rustc_data_structures::sync::Lrc;
use rustc_error_messages::fluent_bundle::resolver::errors::{ReferenceKind, ResolverError};
use rustc_error_messages::langid;
use rustc_error_messages::DiagnosticMessage;
struct Dummy {
bundle: FluentBundle,
}
impl Translate for Dummy {
fn fluent_bundle(&self) -> Option<&Lrc<FluentBundle>> {
None
}
fn fallback_fluent_bundle(&self) -> &FluentBundle {
&self.bundle
}
}
fn make_dummy(ftl: &'static str) -> Dummy {
let resource = FluentResource::try_new(ftl.into()).expect("Failed to parse an FTL string.");
let langid_en = langid!("en-US");
#[cfg(parallel_compiler)]
let mut bundle = FluentBundle::new_concurrent(vec![langid_en]);
#[cfg(not(parallel_compiler))]
let mut bundle = FluentBundle::new(vec![langid_en]);
bundle.add_resource(resource).expect("Failed to add FTL resources to the bundle.");
Dummy { bundle }
}
#[test]
fn wellformed_fluent() {
let dummy = make_dummy("mir_build_borrow_of_moved_value = borrow of moved value
.label = value moved into `{$name}` here
.occurs_because_label = move occurs because `{$name}` has type `{$ty}` which does not implement the `Copy` trait
.value_borrowed_label = value borrowed here after move
.suggestion = borrow this binding in the pattern to avoid moving the value");
let mut args = FluentArgs::new();
args.set("name", "Foo");
args.set("ty", "std::string::String");
{
let message = DiagnosticMessage::FluentIdentifier(
"mir_build_borrow_of_moved_value".into(),
Some("suggestion".into()),
);
assert_eq!(
dummy.translate_message(&message, &args).unwrap(),
"borrow this binding in the pattern to avoid moving the value"
);
}
{
let message = DiagnosticMessage::FluentIdentifier(
"mir_build_borrow_of_moved_value".into(),
Some("value_borrowed_label".into()),
);
assert_eq!(
dummy.translate_message(&message, &args).unwrap(),
"value borrowed here after move"
);
}
{
let message = DiagnosticMessage::FluentIdentifier(
"mir_build_borrow_of_moved_value".into(),
Some("occurs_because_label".into()),
);
assert_eq!(
dummy.translate_message(&message, &args).unwrap(),
"move occurs because `\u{2068}Foo\u{2069}` has type `\u{2068}std::string::String\u{2069}` which does not implement the `Copy` trait"
);
{
let message = DiagnosticMessage::FluentIdentifier(
"mir_build_borrow_of_moved_value".into(),
Some("label".into()),
);
assert_eq!(
dummy.translate_message(&message, &args).unwrap(),
"value moved into `\u{2068}Foo\u{2069}` here"
);
}
}
}
#[test]
fn misformed_fluent() {
let dummy = make_dummy("mir_build_borrow_of_moved_value = borrow of moved value
.label = value moved into `{name}` here
.occurs_because_label = move occurs because `{$oops}` has type `{$ty}` which does not implement the `Copy` trait
.suggestion = borrow this binding in the pattern to avoid moving the value");
let mut args = FluentArgs::new();
args.set("name", "Foo");
args.set("ty", "std::string::String");
{
let message = DiagnosticMessage::FluentIdentifier(
"mir_build_borrow_of_moved_value".into(),
Some("value_borrowed_label".into()),
);
let err = dummy.translate_message(&message, &args).unwrap_err();
assert!(
matches!(
&err,
TranslateError::Two {
primary: box TranslateError::One {
kind: TranslateErrorKind::PrimaryBundleMissing,
..
},
fallback: box TranslateError::One {
kind: TranslateErrorKind::AttributeMissing { attr: "value_borrowed_label" },
..
}
}
),
"{err:#?}"
);
assert_eq!(
format!("{err}"),
"failed while formatting fluent string `mir_build_borrow_of_moved_value`: \nthe attribute `value_borrowed_label` was missing\nhelp: add `.value_borrowed_label = <message>`\n"
);
}
{
let message = DiagnosticMessage::FluentIdentifier(
"mir_build_borrow_of_moved_value".into(),
Some("label".into()),
);
let err = dummy.translate_message(&message, &args).unwrap_err();
if let TranslateError::Two {
primary: box TranslateError::One { kind: TranslateErrorKind::PrimaryBundleMissing, .. },
fallback: box TranslateError::One { kind: TranslateErrorKind::Fluent { errs }, .. },
} = &err
&& let [FluentError::ResolverError(ResolverError::Reference(
ReferenceKind::Message { id, .. }
| ReferenceKind::Variable { id, .. },
))] = &**errs
&& id == "name"
{} else {
panic!("{err:#?}")
};
assert_eq!(
format!("{err}"),
"failed while formatting fluent string `mir_build_borrow_of_moved_value`: \nargument `name` exists but was not referenced correctly\nhelp: try using `{$name}` instead\n"
);
}
{
let message = DiagnosticMessage::FluentIdentifier(
"mir_build_borrow_of_moved_value".into(),
Some("occurs_because_label".into()),
);
let err = dummy.translate_message(&message, &args).unwrap_err();
if let TranslateError::Two {
primary: box TranslateError::One { kind: TranslateErrorKind::PrimaryBundleMissing, .. },
fallback: box TranslateError::One { kind: TranslateErrorKind::Fluent { errs }, .. },
} = &err
&& let [FluentError::ResolverError(ResolverError::Reference(
ReferenceKind::Message { id, .. }
| ReferenceKind::Variable { id, .. },
))] = &**errs
&& id == "oops"
{} else {
panic!("{err:#?}")
};
assert_eq!(
format!("{err}"),
"failed while formatting fluent string `mir_build_borrow_of_moved_value`: \nthe fluent string has an argument `oops` that was not found.\nhelp: the arguments `name` and `ty` are available\n"
);
}
}

123
compiler/rustc_errors/src/translation.rs
View file

@ -1,11 +1,10 @@
use crate::error::TranslateError;
use crate::snippet::Style;
use crate::{DiagnosticArg, DiagnosticMessage, FluentBundle};
use rustc_data_structures::sync::Lrc;
use rustc_error_messages::{
fluent_bundle::resolver::errors::{ReferenceKind, ResolverError},
FluentArgs, FluentError,
};
use rustc_error_messages::FluentArgs;
use std::borrow::Cow;
use std::error::Report;
/// Convert diagnostic arguments (a rustc internal type that exists to implement
/// `Encodable`/`Decodable`) into `FluentArgs` which is necessary to perform translation.
@ -46,7 +45,10 @@ fn translate_messages(
args: &FluentArgs<'_>,
) -> Cow<'_, str> {
Cow::Owned(
messages.iter().map(|(m, _)| self.translate_message(m, args)).collect::<String>(),
messages
.iter()
.map(|(m, _)| self.translate_message(m, args).map_err(Report::new).unwrap())
.collect::<String>(),
)
}
@ -55,83 +57,56 @@ fn translate_message<'a>(
&'a self,
message: &'a DiagnosticMessage,
args: &'a FluentArgs<'_>,
) -> Cow<'_, str> {
) -> Result<Cow<'_, str>, TranslateError<'_>> {
trace!(?message, ?args);
let (identifier, attr) = match message {
DiagnosticMessage::Str(msg) | DiagnosticMessage::Eager(msg) => {
return Cow::Borrowed(msg);
return Ok(Cow::Borrowed(msg));
}
DiagnosticMessage::FluentIdentifier(identifier, attr) => (identifier, attr),
};
let translate_with_bundle =
|bundle: &'a FluentBundle| -> Result<Cow<'_, str>, TranslateError<'_>> {
let message = bundle
.get_message(identifier)
.ok_or(TranslateError::message(identifier, args))?;
let value = match attr {
Some(attr) => message
.get_attribute(attr)
.ok_or(TranslateError::attribute(identifier, args, attr))?
.value(),
None => message.value().ok_or(TranslateError::value(identifier, args))?,
};
debug!(?message, ?value);
let translate_with_bundle = |bundle: &'a FluentBundle| -> Option<(Cow<'_, str>, Vec<_>)> {
let message = bundle.get_message(identifier)?;
let value = match attr {
Some(attr) => message.get_attribute(attr)?.value(),
None => message.value()?,
};
debug!(?message, ?value);
let mut errs = vec![];
let translated = bundle.format_pattern(value, Some(args), &mut errs);
debug!(?translated, ?errs);
Some((translated, errs))
};
self.fluent_bundle()
.and_then(|bundle| translate_with_bundle(bundle))
// If `translate_with_bundle` returns `None` with the primary bundle, this is likely
// just that the primary bundle doesn't contain the message being translated, so
// proceed to the fallback bundle.
//
// However, when errors are produced from translation, then that means the translation
// is broken (e.g. `{$foo}` exists in a translation but `foo` isn't provided).
//
// In debug builds, assert so that compiler devs can spot the broken translation and
// fix it..
.inspect(|(_, errs)| {
debug_assert!(
errs.is_empty(),
"identifier: {:?}, attr: {:?}, args: {:?}, errors: {:?}",
identifier,
attr,
args,
errs
);
})
// ..otherwise, for end users, an error about this wouldn't be useful or actionable, so
// just hide it and try with the fallback bundle.
.filter(|(_, errs)| errs.is_empty())
.or_else(|| translate_with_bundle(self.fallback_fluent_bundle()))
.map(|(translated, errs)| {
// Always bail out for errors with the fallback bundle.
let mut help_messages = vec![];
if !errs.is_empty() {
for error in &errs {
match error {
FluentError::ResolverError(ResolverError::Reference(
ReferenceKind::Message { id, .. },
)) if args.iter().any(|(arg_id, _)| arg_id == id) => {
help_messages.push(format!("Argument `{id}` exists but was not referenced correctly. Try using `{{${id}}}` instead"));
}
_ => {}
}
}
panic!(
"Encountered errors while formatting message for `{identifier}`\n\
help: {}\n\
attr: `{attr:?}`\n\
args: `{args:?}`\n\
errors: `{errs:?}`",
help_messages.join("\nhelp: ")
);
let mut errs = vec![];
let translated = bundle.format_pattern(value, Some(args), &mut errs);
debug!(?translated, ?errs);
if errs.is_empty() {
Ok(translated)
} else {
Err(TranslateError::fluent(identifier, args, errs))
}
};
translated
})
.expect("failed to find message in primary or fallback fluent bundles")
try {
match self.fluent_bundle().map(|b| translate_with_bundle(b)) {
// The primary bundle was present and translation succeeded
Some(Ok(t)) => t,
// Always yeet out for errors on debug
Some(Err(primary)) if cfg!(debug_assertions) => do yeet primary,
// If `translate_with_bundle` returns `Err` with the primary bundle, this is likely
// just that the primary bundle doesn't contain the message being translated or
// something else went wrong) so proceed to the fallback bundle.
Some(Err(primary)) => translate_with_bundle(self.fallback_fluent_bundle())
.map_err(|fallback| primary.and(fallback))?,
// The primary bundle is missing, proceed to the fallback bundle
None => translate_with_bundle(self.fallback_fluent_bundle())
.map_err(|fallback| TranslateError::primary(identifier, args).and(fallback))?,
}
}
}
}

4
compiler/rustc_hir/src/hir_id.rs
View file

@ -148,7 +148,7 @@ fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
/// that is, within a `hir::Item`, `hir::TraitItem`, or `hir::ImplItem`. There is no
/// guarantee that the numerical value of a given `ItemLocalId` corresponds to
/// the node's position within the owning item in any way, but there is a
/// guarantee that the `LocalItemId`s within an owner occupy a dense range of
/// guarantee that the `ItemLocalId`s within an owner occupy a dense range of
/// integers starting at zero, so a mapping that maps all or most nodes within
/// an "item-like" to something else can be implemented by a `Vec` instead of a
/// tree or hash map.
@ -161,7 +161,7 @@ impl ItemLocalId {
pub const INVALID: ItemLocalId = ItemLocalId::MAX;
}
// Safety: Ord is implement as just comparing the LocalItemId's numerical
// Safety: Ord is implement as just comparing the ItemLocalId's numerical
// values and these are not changed by (de-)serialization.
unsafe impl StableOrd for ItemLocalId {}

2
compiler/rustc_metadata/src/rmeta/encoder.rs
View file

@ -1429,7 +1429,7 @@ fn encode_mir(&mut self) {
let instance =
ty::InstanceDef::Item(ty::WithOptConstParam::unknown(def_id.to_def_id()));
let unused = tcx.unused_generic_params(instance);
if !unused.is_empty() {
if !unused.all_used() {
record!(self.tables.unused_generic_params[def_id.to_def_id()] <- unused);
}
}

6
compiler/rustc_metadata/src/rmeta/mod.rs
View file

@ -13,7 +13,7 @@
use rustc_hir::def_id::{CrateNum, DefId, DefIndex, DefPathHash, StableCrateId};
use rustc_hir::definitions::DefKey;
use rustc_hir::lang_items::LangItem;
use rustc_index::bit_set::{BitSet, FiniteBitSet};
use rustc_index::bit_set::BitSet;
use rustc_index::vec::IndexVec;
use rustc_middle::metadata::ModChild;
use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrs;
@ -22,7 +22,7 @@
use rustc_middle::mir;
use rustc_middle::ty::fast_reject::SimplifiedType;
use rustc_middle::ty::query::Providers;
use rustc_middle::ty::{self, ReprOptions, Ty};
use rustc_middle::ty::{self, ReprOptions, Ty, UnusedGenericParams};
use rustc_middle::ty::{DeducedParamAttrs, GeneratorDiagnosticData, ParameterizedOverTcx, TyCtxt};
use rustc_serialize::opaque::FileEncoder;
use rustc_session::config::SymbolManglingVersion;
@ -384,7 +384,7 @@ fn encode(&self, buf: &mut FileEncoder) -> LazyTables {
trait_item_def_id: Table<DefIndex, RawDefId>,
inherent_impls: Table<DefIndex, LazyArray<DefIndex>>,
expn_that_defined: Table<DefIndex, LazyValue<ExpnId>>,
unused_generic_params: Table<DefIndex, LazyValue<FiniteBitSet<u32>>>,
unused_generic_params: Table<DefIndex, LazyValue<UnusedGenericParams>>,
params_in_repr: Table<DefIndex, LazyValue<BitSet<u32>>>,
repr_options: Table<DefIndex, LazyValue<ReprOptions>>,
// `def_keys` and `def_path_hashes` represent a lazy version of a

2
compiler/rustc_middle/src/query/mod.rs
View file

@ -1839,7 +1839,7 @@
desc { "getting codegen unit `{sym}`" }
}
query unused_generic_params(key: ty::InstanceDef<'tcx>) -> FiniteBitSet<u32> {
query unused_generic_params(key: ty::InstanceDef<'tcx>) -> UnusedGenericParams {
cache_on_disk_if { key.def_id().is_local() }
desc {
|tcx| "determining which generic parameters are unused by `{}`",

38
compiler/rustc_middle/src/ty/instance.rs
View file

@ -6,6 +6,7 @@
use rustc_hir::def::Namespace;
use rustc_hir::def_id::{CrateNum, DefId};
use rustc_hir::lang_items::LangItem;
use rustc_index::bit_set::FiniteBitSet;
use rustc_macros::HashStable;
use rustc_middle::ty::normalize_erasing_regions::NormalizationError;
use rustc_span::Symbol;
@ -711,7 +712,7 @@ fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> {
}
InternalSubsts::for_item(tcx, def_id, |param, _| {
let is_unused = unused.contains(param.index).unwrap_or(false);
let is_unused = unused.is_unused(param.index);
debug!("polymorphize: param={:?} is_unused={:?}", param, is_unused);
match param.kind {
// Upvar case: If parameter is a type parameter..
@ -733,7 +734,7 @@ fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> {
// Simple case: If parameter is a const or type parameter..
ty::GenericParamDefKind::Const { .. } | ty::GenericParamDefKind::Type { .. } if
// ..and is within range and unused..
unused.contains(param.index).unwrap_or(false) =>
unused.is_unused(param.index) =>
// ..then use the identity for this parameter.
tcx.mk_param_from_def(param),
@ -774,3 +775,36 @@ fn needs_fn_once_adapter_shim(
(ty::ClosureKind::FnMut | ty::ClosureKind::FnOnce, _) => Err(()),
}
}
// Set bits represent unused generic parameters.
// An empty set indicates that all parameters are used.
#[derive(Debug, Copy, Clone, Eq, PartialEq, Decodable, Encodable, HashStable)]
pub struct UnusedGenericParams(FiniteBitSet<u32>);
impl UnusedGenericParams {
pub fn new_all_unused(amount: u32) -> Self {
let mut bitset = FiniteBitSet::new_empty();
bitset.set_range(0..amount);
Self(bitset)
}
pub fn new_all_used() -> Self {
Self(FiniteBitSet::new_empty())
}
pub fn mark_used(&mut self, idx: u32) {
self.0.clear(idx);
}
pub fn is_unused(&self, idx: u32) -> bool {
self.0.contains(idx).unwrap_or(false)
}
pub fn is_used(&self, idx: u32) -> bool {
!self.is_unused(idx)
}
pub fn all_used(&self) -> bool {
self.0.is_empty()
}
}

2
compiler/rustc_middle/src/ty/mod.rs
View file

@ -86,7 +86,7 @@
tls, CtxtInterners, DeducedParamAttrs, FreeRegionInfo, GlobalCtxt, Lift, OnDiskCache, TyCtxt,
TyCtxtFeed,
};
pub use self::instance::{Instance, InstanceDef, ShortInstance};
pub use self::instance::{Instance, InstanceDef, ShortInstance, UnusedGenericParams};
pub use self::list::List;
pub use self::parameterized::ParameterizedOverTcx;
pub use self::rvalue_scopes::RvalueScopes;

1
compiler/rustc_middle/src/ty/parameterized.rs
View file

@ -60,6 +60,7 @@ impl $crate::ty::ParameterizedOverTcx for $ty {
ty::ImplPolarity,
ty::ReprOptions,
ty::TraitDef,
ty::UnusedGenericParams,
ty::Visibility<DefIndex>,
ty::adjustment::CoerceUnsizedInfo,
ty::fast_reject::SimplifiedType,

4
compiler/rustc_middle/src/ty/query.rs
View file

@ -34,7 +34,7 @@
use crate::ty::subst::{GenericArg, SubstsRef};
use crate::ty::util::AlwaysRequiresDrop;
use crate::ty::GeneratorDiagnosticData;
use crate::ty::{self, CrateInherentImpls, ParamEnvAnd, Ty, TyCtxt};
use crate::ty::{self, CrateInherentImpls, ParamEnvAnd, Ty, TyCtxt, UnusedGenericParams};
use rustc_ast as ast;
use rustc_ast::expand::allocator::AllocatorKind;
use rustc_attr as attr;
@ -50,7 +50,7 @@
use rustc_hir::hir_id::OwnerId;
use rustc_hir::lang_items::{LangItem, LanguageItems};
use rustc_hir::{Crate, ItemLocalId, TraitCandidate};
use rustc_index::{bit_set::FiniteBitSet, vec::IndexVec};
use rustc_index::vec::IndexVec;
use rustc_session::config::{EntryFnType, OptLevel, OutputFilenames, SymbolManglingVersion};
use rustc_session::cstore::{CrateDepKind, CrateSource};
use rustc_session::cstore::{ExternCrate, ForeignModule, LinkagePreference, NativeLib};

4
compiler/rustc_monomorphize/src/errors.rs
View file

@ -32,13 +32,13 @@ pub struct TypeLengthLimit {
pub type_length: usize,
}
pub struct UnusedGenericParams {
pub struct UnusedGenericParamsHint {
pub span: Span,
pub param_spans: Vec<Span>,
pub param_names: Vec<String>,
}
impl IntoDiagnostic<'_> for UnusedGenericParams {
impl IntoDiagnostic<'_> for UnusedGenericParamsHint {
#[track_caller]
fn into_diagnostic(
self,

83
compiler/rustc_monomorphize/src/polymorphize.rs
View file

@ -6,7 +6,6 @@
//! for their size, offset of a field, etc.).
use rustc_hir::{def::DefKind, def_id::DefId, ConstContext};
use rustc_index::bit_set::FiniteBitSet;
use rustc_middle::mir::{
self,
visit::{TyContext, Visitor},
@ -17,12 +16,12 @@
query::Providers,
subst::SubstsRef,
visit::{TypeSuperVisitable, TypeVisitable, TypeVisitor},
Const, Ty, TyCtxt,
Const, Ty, TyCtxt, UnusedGenericParams,
};
use rustc_span::symbol::sym;
use std::ops::ControlFlow;
use crate::errors::UnusedGenericParams;
use crate::errors::UnusedGenericParamsHint;
/// Provide implementations of queries relating to polymorphization analysis.
pub fn provide(providers: &mut Providers) {
@ -36,16 +35,16 @@ pub fn provide(providers: &mut Providers) {
fn unused_generic_params<'tcx>(
tcx: TyCtxt<'tcx>,
instance: ty::InstanceDef<'tcx>,
) -> FiniteBitSet<u32> {
) -> UnusedGenericParams {
if !tcx.sess.opts.unstable_opts.polymorphize {
// If polymorphization disabled, then all parameters are used.
return FiniteBitSet::new_empty();
return UnusedGenericParams::new_all_used();
}
let def_id = instance.def_id();
// Exit early if this instance should not be polymorphized.
if !should_polymorphize(tcx, def_id, instance) {
return FiniteBitSet::new_empty();
return UnusedGenericParams::new_all_used();
}
let generics = tcx.generics_of(def_id);
@ -53,14 +52,13 @@ fn unused_generic_params<'tcx>(
// Exit early when there are no parameters to be unused.
if generics.count() == 0 {
return FiniteBitSet::new_empty();
return UnusedGenericParams::new_all_used();
}
// Create a bitset with N rightmost ones for each parameter.
let generics_count: u32 =
generics.count().try_into().expect("more generic parameters than can fit into a `u32`");
let mut unused_parameters = FiniteBitSet::<u32>::new_empty();
unused_parameters.set_range(0..generics_count);
let mut unused_parameters = UnusedGenericParams::new_all_unused(generics_count);
debug!(?unused_parameters, "(start)");
mark_used_by_default_parameters(tcx, def_id, generics, &mut unused_parameters);
@ -78,7 +76,7 @@ fn unused_generic_params<'tcx>(
debug!(?unused_parameters, "(end)");
// Emit errors for debugging and testing if enabled.
if !unused_parameters.is_empty() {
if !unused_parameters.all_used() {
emit_unused_generic_params_error(tcx, def_id, generics, &unused_parameters);
}
@ -136,13 +134,13 @@ fn mark_used_by_default_parameters<'tcx>(
tcx: TyCtxt<'tcx>,
def_id: DefId,
generics: &'tcx ty::Generics,
unused_parameters: &mut FiniteBitSet<u32>,
unused_parameters: &mut UnusedGenericParams,
) {
match tcx.def_kind(def_id) {
DefKind::Closure | DefKind::Generator => {
for param in &generics.params {
debug!(?param, "(closure/gen)");
unused_parameters.clear(param.index);
unused_parameters.mark_used(param.index);
}
}
DefKind::Mod
@ -178,7 +176,7 @@ fn mark_used_by_default_parameters<'tcx>(
for param in &generics.params {
debug!(?param, "(other)");
if let ty::GenericParamDefKind::Lifetime = param.kind {
unused_parameters.clear(param.index);
unused_parameters.mark_used(param.index);
}
}
}
@ -196,7 +194,7 @@ fn emit_unused_generic_params_error<'tcx>(
tcx: TyCtxt<'tcx>,
def_id: DefId,
generics: &'tcx ty::Generics,
unused_parameters: &FiniteBitSet<u32>,
unused_parameters: &UnusedGenericParams,
) {
let base_def_id = tcx.typeck_root_def_id(def_id);
if !tcx.has_attr(base_def_id, sym::rustc_polymorphize_error) {
@ -213,7 +211,7 @@ fn emit_unused_generic_params_error<'tcx>(
let mut next_generics = Some(generics);
while let Some(generics) = next_generics {
for param in &generics.params {
if unused_parameters.contains(param.index).unwrap_or(false) {
if unused_parameters.is_unused(param.index) {
debug!(?param);
let def_span = tcx.def_span(param.def_id);
param_spans.push(def_span);
@ -224,14 +222,14 @@ fn emit_unused_generic_params_error<'tcx>(
next_generics = generics.parent.map(|did| tcx.generics_of(did));
}
tcx.sess.emit_err(UnusedGenericParams { span: fn_span, param_spans, param_names });
tcx.sess.emit_err(UnusedGenericParamsHint { span: fn_span, param_spans, param_names });
}
/// Visitor used to aggregate generic parameter uses.
struct MarkUsedGenericParams<'a, 'tcx> {
tcx: TyCtxt<'tcx>,
def_id: DefId,
unused_parameters: &'a mut FiniteBitSet<u32>,
unused_parameters: &'a mut UnusedGenericParams,
}
impl<'a, 'tcx> MarkUsedGenericParams<'a, 'tcx> {
@ -244,7 +242,7 @@ fn visit_child_body(&mut self, def_id: DefId, substs: SubstsRef<'tcx>) {
debug!(?self.unused_parameters, ?unused);
for (i, arg) in substs.iter().enumerate() {
let i = i.try_into().unwrap();
if !unused.contains(i).unwrap_or(false) {
if unused.is_used(i) {
arg.visit_with(self);
}
}
@ -308,7 +306,7 @@ fn visit_const(&mut self, c: Const<'tcx>) -> ControlFlow<Self::BreakTy> {
match c.kind() {
ty::ConstKind::Param(param) => {
debug!(?param);
self.unused_parameters.clear(param.index);
self.unused_parameters.mark_used(param.index);
ControlFlow::CONTINUE
}
ty::ConstKind::Unevaluated(ty::UnevaluatedConst { def, substs })
@ -342,55 +340,10 @@ fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
}
ty::Param(param) => {
debug!(?param);
self.unused_parameters.clear(param.index);
self.unused_parameters.mark_used(param.index);
ControlFlow::CONTINUE
}
_ => ty.super_visit_with(self),
}
}
}
/// Visitor used to check if a generic parameter is used.
struct HasUsedGenericParams<'a> {
unused_parameters: &'a FiniteBitSet<u32>,
}
impl<'a, 'tcx> TypeVisitor<'tcx> for HasUsedGenericParams<'a> {
type BreakTy = ();
#[instrument(level = "debug", skip(self))]
fn visit_const(&mut self, c: Const<'tcx>) -> ControlFlow<Self::BreakTy> {
if !c.has_non_region_param() {
return ControlFlow::CONTINUE;
}
match c.kind() {
ty::ConstKind::Param(param) => {
if self.unused_parameters.contains(param.index).unwrap_or(false) {
ControlFlow::CONTINUE
} else {
ControlFlow::BREAK
}
}
_ => c.super_visit_with(self),
}
}
#[instrument(level = "debug", skip(self))]
fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
if !ty.has_non_region_param() {
return ControlFlow::CONTINUE;
}
match ty.kind() {
ty::Param(param) => {
if self.unused_parameters.contains(param.index).unwrap_or(false) {
ControlFlow::CONTINUE
} else {
ControlFlow::BREAK
}
}
_ => ty.super_visit_with(self),
}
}
}

2
compiler/rustc_session/src/options.rs
View file

@ -1570,7 +1570,7 @@ pub(crate) fn parse_proc_macro_execution_strategy(
/// o/w tests have closure@path
span_free_formats: bool = (false, parse_bool, [UNTRACKED],
"exclude spans when debug-printing compiler state (default: no)"),
split_dwarf_inlining: bool = (true, parse_bool, [TRACKED],
split_dwarf_inlining: bool = (false, parse_bool, [TRACKED],
"provide minimal debug info in the object/executable to facilitate online \
symbolication/stack traces in the absence of .dwo/.dwp files when using Split DWARF"),
split_dwarf_kind: SplitDwarfKind = (SplitDwarfKind::Split, parse_split_dwarf_kind, [TRACKED],

8
compiler/rustc_trait_selection/src/solve/project_goals.rs
View file

@ -131,8 +131,14 @@ fn consider_impl_candidate(
else {
return
};
let where_clause_bounds = tcx
.predicates_of(impl_def_id)
.instantiate(tcx, impl_substs)
.predicates
.into_iter()
.map(|pred| goal.with(tcx, pred));
let nested_goals = obligations.into_iter().map(|o| o.into()).collect();
let nested_goals = obligations.into_iter().map(|o| o.into()).chain(where_clause_bounds).collect();
let Ok(trait_ref_certainty) = acx.cx.evaluate_all(acx.infcx, nested_goals) else { return };
let Some(assoc_def) = fetch_eligible_assoc_item_def(

15
compiler/rustc_trait_selection/src/solve/trait_goals.rs
View file

@ -71,7 +71,9 @@ fn consider_impl_candidate(
goal: Goal<'tcx, TraitPredicate<'tcx>>,
impl_def_id: DefId,
) {
let impl_trait_ref = acx.cx.tcx.bound_impl_trait_ref(impl_def_id).unwrap();
let tcx = acx.cx.tcx;
let impl_trait_ref = tcx.bound_impl_trait_ref(impl_def_id).unwrap();
let drcx = DeepRejectCtxt { treat_obligation_params: TreatParams::AsPlaceholder };
if iter::zip(goal.predicate.trait_ref.substs, impl_trait_ref.skip_binder().substs)
.any(|(goal, imp)| !drcx.generic_args_may_unify(goal, imp))
@ -81,7 +83,7 @@ fn consider_impl_candidate(
acx.infcx.probe(|_| {
let impl_substs = acx.infcx.fresh_substs_for_item(DUMMY_SP, impl_def_id);
let impl_trait_ref = impl_trait_ref.subst(acx.cx.tcx, impl_substs);
let impl_trait_ref = impl_trait_ref.subst(tcx, impl_substs);
let Ok(InferOk { obligations, .. }) = acx
.infcx
@ -92,8 +94,15 @@ fn consider_impl_candidate(
else {
return
};
let where_clause_bounds = tcx
.predicates_of(impl_def_id)
.instantiate(tcx, impl_substs)
.predicates
.into_iter()
.map(|pred| goal.with(tcx, pred));
let nested_goals = obligations.into_iter().map(|o| o.into()).collect();
let nested_goals =
obligations.into_iter().map(|o| o.into()).chain(where_clause_bounds).collect();
let Ok(certainty) = acx.cx.evaluate_all(acx.infcx, nested_goals) else { return };
acx.try_insert_candidate(CandidateSource::Impl(impl_def_id), certainty);

26
library/core/tests/time.rs
View file

@ -173,6 +173,32 @@ fn div() {
assert_eq!(Duration::new(99, 999_999_000) / 100, Duration::new(0, 999_999_990));
}
#[test]
fn div_duration_f32() {
assert_eq!(Duration::ZERO.div_duration_f32(Duration::MAX), 0.0);
assert_eq!(Duration::MAX.div_duration_f32(Duration::ZERO), f32::INFINITY);
assert_eq!((Duration::SECOND * 2).div_duration_f32(Duration::SECOND), 2.0);
assert!(Duration::ZERO.div_duration_f32(Duration::ZERO).is_nan());
// These tests demonstrate it doesn't panic with extreme values.
// Accuracy of the computed value is not a huge concern, we know floats don't work well
// at these extremes.
assert!((Duration::MAX).div_duration_f32(Duration::NANOSECOND) > 10.0f32.powf(28.0));
assert!((Duration::NANOSECOND).div_duration_f32(Duration::MAX) < 0.1);
}
#[test]
fn div_duration_f64() {
assert_eq!(Duration::ZERO.div_duration_f64(Duration::MAX), 0.0);
assert_eq!(Duration::MAX.div_duration_f64(Duration::ZERO), f64::INFINITY);
assert_eq!((Duration::SECOND * 2).div_duration_f64(Duration::SECOND), 2.0);
assert!(Duration::ZERO.div_duration_f64(Duration::ZERO).is_nan());
// These tests demonstrate it doesn't panic with extreme values.
// Accuracy of the computed value is not a huge concern, we know floats don't work well
// at these extremes.
assert!((Duration::MAX).div_duration_f64(Duration::NANOSECOND) > 10.0f64.powf(28.0));
assert!((Duration::NANOSECOND).div_duration_f64(Duration::MAX) < 0.1);
}
#[test]
fn checked_div() {
assert_eq!(Duration::new(2, 0).checked_div(2), Some(Duration::new(1, 0)));

10
library/std/src/fs.rs
View file

@ -249,8 +249,9 @@ pub struct DirBuilder {
pub fn read<P: AsRef<Path>>(path: P) -> io::Result<Vec<u8>> {
fn inner(path: &Path) -> io::Result<Vec<u8>> {
let mut file = File::open(path)?;
let mut bytes = Vec::new();
file.read_to_end(&mut bytes)?;
let size = file.metadata().map(|m| m.len()).unwrap_or(0);
let mut bytes = Vec::with_capacity(size as usize);
io::default_read_to_end(&mut file, &mut bytes)?;
Ok(bytes)
}
inner(path.as_ref())
@ -288,8 +289,9 @@ fn inner(path: &Path) -> io::Result<Vec<u8>> {
pub fn read_to_string<P: AsRef<Path>>(path: P) -> io::Result<String> {
fn inner(path: &Path) -> io::Result<String> {
let mut file = File::open(path)?;
let mut string = String::new();
file.read_to_string(&mut string)?;
let size = file.metadata().map(|m| m.len()).unwrap_or(0);
let mut string = String::with_capacity(size as usize);
io::default_read_to_string(&mut file, &mut string)?;
Ok(string)
}
inner(path.as_ref())

4
src/librustdoc/passes/lint/check_code_block_syntax.rs
View file

@ -156,7 +156,9 @@ fn emit_diagnostic(&mut self, diag: &Diagnostic) {
let mut buffer = self.buffer.borrow_mut();
let fluent_args = to_fluent_args(diag.args());
let translated_main_message = self.translate_message(&diag.message[0].0, &fluent_args);
let translated_main_message = self
.translate_message(&diag.message[0].0, &fluent_args)
.unwrap_or_else(|e| panic!("{e}"));
buffer.messages.push(format!("error from rustc: {}", translated_main_message));
if diag.is_error() {

7
triagebot.toml
View file

@ -249,6 +249,11 @@ trigger_files = [
[autolabel."S-waiting-on-review"]
new_pr = true
[autolabel."WG-trait-system-refactor"]
trigger_files = [
"compiler/rustc_trait_selection/solve"
]
[notify-zulip."I-prioritize"]
zulip_stream = 245100 # #t-compiler/wg-prioritization/alerts
topic = "#{number} {title}"
@ -344,7 +349,7 @@ cc = ["@BoxyUwU"]
[mentions."compiler/rustc_trait_selection/src/solve/"]
message = "Some changes occurred to the core trait solver"
cc = ["@lcnr", "@compiler-errors"]
cc = ["@rust-lang/initiative-trait-system-refactor"]
[mentions."compiler/rustc_trait_selection/src/traits/engine.rs"]
message = """