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Auto merge of #122241 - matthiaskrgr:rollup-r8q87ok, r=matthiaskrgr 

Rollup of 12 pull requests

Successful merges:

 - #121358 (Reduce alignment of TypeId to u64 alignment)
 - #121813 (Misc improvements to non local defs lint implementation)
 - #122160 (Eagerly translate `HelpUseLatestEdition` in parser diagnostics)
 - #122178 (ci: add a runner for vanilla LLVM 18)
 - #122187 (Move metadata header and version checks together)
 - #122209 (fix incorrect path resolution in tidy)
 - #122215 (Some tweaks to the parallel query cycle handler)
 - #122223 (Fix typo in `VisitorResult`)
 - #122224 (Add missing regression tests)
 - #122232 (library/core: fix a comment, and a cfg(miri) warning)
 - #122233 (miri: do not apply aliasing restrictions to Box with custom allocator)
 - #122237 (Remove `Ord` from `ClosureKind`)

r? `@ghost`
`@rustbot` modify labels: rollup
This commit is contained in:
bors 2024-03-09 15:37:01 +00:00
parent b054da8155 7193ce0061
commit 8401645716
44 changed files with 697 additions and 171 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
.github/workflows/ci.yml vendored
View File

@ -315,6 +315,10 @@ jobs:
- name: x86_64-gnu-distcheck
os: ubuntu-20.04-8core-32gb
env: {}
- name: x86_64-gnu-llvm-18
env:
RUST_BACKTRACE: 1
os: ubuntu-20.04-8core-32gb
- name: x86_64-gnu-llvm-17
env:
RUST_BACKTRACE: 1

1
Cargo.lock
View File

@ -4133,7 +4133,6 @@ dependencies = [
"rustc_target",
"rustc_trait_selection",
"rustc_type_ir",
"smallvec",
"tracing",
"unicode-security",
]

2
compiler/rustc_ast_ir/src/visit.rs
View File

@ -14,7 +14,7 @@ impl VisitorResult for () {
type Residual = !;
#[cfg(not(feature = "nightly"))]
type Residual = core::ops::Infallible;
type Residual = core::convert::Infallible;
fn output() -> Self {}
fn from_residual(_: Self::Residual) -> Self {}

8
compiler/rustc_const_eval/src/interpret/validity.rs
View File

@ -17,8 +17,8 @@ use rustc_middle::mir::interpret::{
ExpectedKind, InterpError, InvalidMetaKind, Misalignment, PointerKind, Provenance,
ValidationErrorInfo, ValidationErrorKind, ValidationErrorKind::*,
};
use rustc_middle::ty;
use rustc_middle::ty::layout::{LayoutOf, TyAndLayout};
use rustc_middle::ty::{self, Ty};
use rustc_span::symbol::{sym, Symbol};
use rustc_target::abi::{
Abi, FieldIdx, Scalar as ScalarAbi, Size, VariantIdx, Variants, WrappingRange,
@ -783,7 +783,11 @@ impl<'rt, 'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> ValueVisitor<'mir, 'tcx, M>
}
#[inline]
fn visit_box(&mut self, op: &OpTy<'tcx, M::Provenance>) -> InterpResult<'tcx> {
fn visit_box(
&mut self,
_box_ty: Ty<'tcx>,
op: &OpTy<'tcx, M::Provenance>,
) -> InterpResult<'tcx> {
self.check_safe_pointer(op, PointerKind::Box)?;
Ok(())
}

10
compiler/rustc_const_eval/src/interpret/visitor.rs
View File

@ -3,7 +3,7 @@
use rustc_index::IndexVec;
use rustc_middle::mir::interpret::InterpResult;
use rustc_middle::ty;
use rustc_middle::ty::{self, Ty};
use rustc_target::abi::FieldIdx;
use rustc_target::abi::{FieldsShape, VariantIdx, Variants};
@ -47,10 +47,10 @@ pub trait ValueVisitor<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>>: Sized {
Ok(())
}
/// Visits the given value as the pointer of a `Box`. There is nothing to recurse into.
/// The type of `v` will be a raw pointer, but this is a field of `Box<T>` and the
/// pointee type is the actual `T`.
/// The type of `v` will be a raw pointer to `T`, but this is a field of `Box<T>` and the
/// pointee type is the actual `T`. `box_ty` provides the full type of the `Box` itself.
#[inline(always)]
fn visit_box(&mut self, _v: &Self::V) -> InterpResult<'tcx> {
fn visit_box(&mut self, _box_ty: Ty<'tcx>, _v: &Self::V) -> InterpResult<'tcx> {
Ok(())
}
@ -144,7 +144,7 @@ pub trait ValueVisitor<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>>: Sized {
assert_eq!(nonnull_ptr.layout().fields.count(), 1);
let raw_ptr = self.ecx().project_field(&nonnull_ptr, 0)?; // the actual raw ptr
// ... whose only field finally is a raw ptr we can dereference.
self.visit_box(&raw_ptr)?;
self.visit_box(ty, &raw_ptr)?;
// The second `Box` field is the allocator, which we recursively check for validity
// like in regular structs.

1
compiler/rustc_driver_impl/src/lib.rs
View File

@ -676,6 +676,7 @@ fn list_metadata(early_dcx: &EarlyDiagCtxt, sess: &Session, metadata_loader: &dy
metadata_loader,
&mut v,
&sess.opts.unstable_opts.ls,
sess.cfg_version,
)
.unwrap();
safe_println!("{}", String::from_utf8(v).unwrap());

4
compiler/rustc_hir_analysis/src/check/intrinsic.rs
View File

@ -657,6 +657,10 @@ pub fn check_intrinsic_type(
sym::simd_shuffle => (3, 0, vec![param(0), param(0), param(1)], param(2)),
sym::simd_shuffle_generic => (2, 1, vec![param(0), param(0)], param(1)),
sym::retag_box_to_raw => {
(2, 0, vec![Ty::new_mut_ptr(tcx, param(0))], Ty::new_mut_ptr(tcx, param(0)))
}
other => {
tcx.dcx().emit_err(UnrecognizedIntrinsicFunction { span, name: other });
return;

17
compiler/rustc_hir_typeck/src/closure.rs
View File

@ -19,7 +19,7 @@ use rustc_target::spec::abi::Abi;
use rustc_trait_selection::traits;
use rustc_trait_selection::traits::error_reporting::ArgKind;
use rustc_trait_selection::traits::error_reporting::InferCtxtExt as _;
use std::cmp;
use rustc_type_ir::ClosureKind;
use std::iter;
use std::ops::ControlFlow;
@ -437,10 +437,17 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
};
if let Some(found_kind) = found_kind {
expected_kind = Some(
expected_kind
.map_or_else(|| found_kind, |current| cmp::min(current, found_kind)),
);
// always use the closure kind that is more permissive.
match (expected_kind, found_kind) {
(None, _) => expected_kind = Some(found_kind),
(Some(ClosureKind::FnMut), ClosureKind::Fn) => {
expected_kind = Some(ClosureKind::Fn)
}
(Some(ClosureKind::FnOnce), ClosureKind::Fn | ClosureKind::FnMut) => {
expected_kind = Some(found_kind)
}
_ => {}
}
}
}
}

19
compiler/rustc_interface/src/util.rs
View File

@ -101,10 +101,11 @@ pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce() -> R + Send, R: Send>(
threads: usize,
f: F,
) -> R {
use rustc_data_structures::{jobserver, sync::FromDyn};
use rustc_data_structures::{defer, jobserver, sync::FromDyn};
use rustc_middle::ty::tls;
use rustc_query_impl::QueryCtxt;
use rustc_query_system::query::{deadlock, QueryContext};
use rustc_query_system::query::{break_query_cycles, QueryContext};
use std::process;
let registry = sync::Registry::new(std::num::NonZero::new(threads).unwrap());
@ -128,7 +129,19 @@ pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce() -> R + Send, R: Send>(
let query_map =
FromDyn::from(tls::with(|tcx| QueryCtxt::new(tcx).collect_active_jobs()));
let registry = rayon_core::Registry::current();
thread::spawn(move || deadlock(query_map.into_inner(), &registry));
thread::Builder::new()
.name("rustc query cycle handler".to_string())
.spawn(move || {
let on_panic = defer(|| {
eprintln!("query cycle handler thread panicked, aborting process");
// We need to abort here as we failed to resolve the deadlock,
// otherwise the compiler could just hang,
process::abort();
});
break_query_cycles(query_map.into_inner(), &registry);
on_panic.disable();
})
.unwrap();
});
if let Some(size) = get_stack_size() {
builder = builder.stack_size(size);

1
compiler/rustc_lint/Cargo.toml
View File

@ -23,7 +23,6 @@ rustc_span = { path = "../rustc_span" }
rustc_target = { path = "../rustc_target" }
rustc_trait_selection = { path = "../rustc_trait_selection" }
rustc_type_ir = { path = "../rustc_type_ir" }
smallvec = { version = "1.8.1", features = ["union", "may_dangle"] }
tracing = "0.1"
unicode-security = "0.1.0"
# tidy-alphabetical-end

34
compiler/rustc_lint/src/non_local_def.rs
View File

@ -2,8 +2,6 @@ use rustc_hir::{def::DefKind, Body, Item, ItemKind, Node, Path, QPath, TyKind};
use rustc_span::def_id::{DefId, LOCAL_CRATE};
use rustc_span::{sym, symbol::kw, ExpnKind, MacroKind};
use smallvec::{smallvec, SmallVec};
use crate::lints::{NonLocalDefinitionsCargoUpdateNote, NonLocalDefinitionsDiag};
use crate::{LateContext, LateLintPass, LintContext};
@ -85,7 +83,7 @@ impl<'tcx> LateLintPass<'tcx> for NonLocalDefinitions {
if let Some(def_id) = oexpn.macro_def_id
&& let ExpnKind::Macro(macro_kind, macro_name) = oexpn.kind
&& def_id.krate != LOCAL_CRATE
&& std::env::var_os("CARGO").is_some()
&& rustc_session::utils::was_invoked_from_cargo()
{
Some(NonLocalDefinitionsCargoUpdateNote {
macro_kind: macro_kind.descr(),
@ -114,25 +112,25 @@ impl<'tcx> LateLintPass<'tcx> for NonLocalDefinitions {
// is using local items and so we don't lint on it.
// We also ignore anon-const in item by including the anon-const
// parent as well; and since it's quite uncommon, we use smallvec
// to avoid unnecessary heap allocations.
let local_parents: SmallVec<[DefId; 1]> = if parent_def_kind == DefKind::Const
// parent as well.
let parent_parent = if parent_def_kind == DefKind::Const
&& parent_opt_item_name == Some(kw::Underscore)
{
smallvec![parent, cx.tcx.parent(parent)]
Some(cx.tcx.parent(parent))
} else {
smallvec![parent]
None
};
let self_ty_has_local_parent = match impl_.self_ty.kind {
TyKind::Path(QPath::Resolved(_, ty_path)) => {
path_has_local_parent(ty_path, cx, &*local_parents)
path_has_local_parent(ty_path, cx, parent, parent_parent)
}
TyKind::TraitObject([principle_poly_trait_ref, ..], _, _) => {
path_has_local_parent(
principle_poly_trait_ref.trait_ref.path,
cx,
&*local_parents,
parent,
parent_parent,
)
}
TyKind::TraitObject([], _, _)
@ -154,7 +152,7 @@ impl<'tcx> LateLintPass<'tcx> for NonLocalDefinitions {
let of_trait_has_local_parent = impl_
.of_trait
.map(|of_trait| path_has_local_parent(of_trait.path, cx, &*local_parents))
.map(|of_trait| path_has_local_parent(of_trait.path, cx, parent, parent_parent))
.unwrap_or(false);
// If none of them have a local parent (LOGICAL NOR) this means that
@ -218,6 +216,16 @@ impl<'tcx> LateLintPass<'tcx> for NonLocalDefinitions {
/// std::convert::PartialEq<Foo<Bar>>
/// ^^^^^^^^^^^^^^^^^^^^^^^
/// ```
fn path_has_local_parent(path: &Path<'_>, cx: &LateContext<'_>, local_parents: &[DefId]) -> bool {
path.res.opt_def_id().is_some_and(|did| local_parents.contains(&cx.tcx.parent(did)))
fn path_has_local_parent(
path: &Path<'_>,
cx: &LateContext<'_>,
impl_parent: DefId,
impl_parent_parent: Option<DefId>,
) -> bool {
path.res.opt_def_id().is_some_and(|did| {
did.is_local() && {
let res_parent = cx.tcx.parent(did);
res_parent == impl_parent || Some(res_parent) == impl_parent_parent
}
})
}

99
compiler/rustc_metadata/src/locator.rs
View File

@ -569,31 +569,47 @@ impl<'a> CrateLocator<'a> {
debug!("skipping empty file");
continue;
}
let (hash, metadata) =
match get_metadata_section(self.target, flavor, &lib, self.metadata_loader) {
Ok(blob) => {
if let Some(h) = self.crate_matches(&blob, &lib) {
(h, blob)
} else {
info!("metadata mismatch");
continue;
}
}
Err(MetadataError::LoadFailure(err)) => {
info!("no metadata found: {}", err);
// The file was present and created by the same compiler version, but we
// couldn't load it for some reason. Give a hard error instead of silently
// ignoring it, but only if we would have given an error anyway.
self.crate_rejections
.via_invalid
.push(CrateMismatch { path: lib, got: err });
let (hash, metadata) = match get_metadata_section(
self.target,
flavor,
&lib,
self.metadata_loader,
self.cfg_version,
) {
Ok(blob) => {
if let Some(h) = self.crate_matches(&blob, &lib) {
(h, blob)
} else {
info!("metadata mismatch");
continue;
}
Err(err @ MetadataError::NotPresent(_)) => {
info!("no metadata found: {}", err);
continue;
}
};
}
Err(MetadataError::VersionMismatch { expected_version, found_version }) => {
// The file was present and created by the same compiler version, but we
// couldn't load it for some reason. Give a hard error instead of silently
// ignoring it, but only if we would have given an error anyway.
info!(
"Rejecting via version: expected {} got {}",
expected_version, found_version
);
self.crate_rejections
.via_version
.push(CrateMismatch { path: lib, got: found_version });
continue;
}
Err(MetadataError::LoadFailure(err)) => {
info!("no metadata found: {}", err);
// The file was present and created by the same compiler version, but we
// couldn't load it for some reason. Give a hard error instead of silently
// ignoring it, but only if we would have given an error anyway.
self.crate_rejections.via_invalid.push(CrateMismatch { path: lib, got: err });
continue;
}
Err(err @ MetadataError::NotPresent(_)) => {
info!("no metadata found: {}", err);
continue;
}
};
// If we see multiple hashes, emit an error about duplicate candidates.
if slot.as_ref().is_some_and(|s| s.0 != hash) {
if let Some(candidates) = err_data {
@ -648,16 +664,6 @@ impl<'a> CrateLocator<'a> {
}
fn crate_matches(&mut self, metadata: &MetadataBlob, libpath: &Path) -> Option<Svh> {
let rustc_version = rustc_version(self.cfg_version);
let found_version = metadata.get_rustc_version();
if found_version != rustc_version {
info!("Rejecting via version: expected {} got {}", rustc_version, found_version);
self.crate_rejections
.via_version
.push(CrateMismatch { path: libpath.to_path_buf(), got: found_version });
return None;
}
let header = metadata.get_header();
if header.is_proc_macro_crate != self.is_proc_macro {
info!(
@ -770,6 +776,7 @@ fn get_metadata_section<'p>(
flavor: CrateFlavor,
filename: &'p Path,
loader: &dyn MetadataLoader,
cfg_version: &'static str,
) -> Result<MetadataBlob, MetadataError<'p>> {
if !filename.exists() {
return Err(MetadataError::NotPresent(filename));
@ -847,13 +854,18 @@ fn get_metadata_section<'p>(
}
};
let blob = MetadataBlob(raw_bytes);
if blob.is_compatible() {
Ok(blob)
} else {
Err(MetadataError::LoadFailure(format!(
match blob.check_compatibility(cfg_version) {
Ok(()) => Ok(blob),
Err(None) => Err(MetadataError::LoadFailure(format!(
"invalid metadata version found: {}",
filename.display()
)))
))),
Err(Some(found_version)) => {
return Err(MetadataError::VersionMismatch {
expected_version: rustc_version(cfg_version),
found_version,
});
}
}
}
@ -864,9 +876,10 @@ pub fn list_file_metadata(
metadata_loader: &dyn MetadataLoader,
out: &mut dyn Write,
ls_kinds: &[String],
cfg_version: &'static str,
) -> IoResult<()> {
let flavor = get_flavor_from_path(path);
match get_metadata_section(target, flavor, path, metadata_loader) {
match get_metadata_section(target, flavor, path, metadata_loader, cfg_version) {
Ok(metadata) => metadata.list_crate_metadata(out, ls_kinds),
Err(msg) => write!(out, "{msg}\n"),
}
@ -932,6 +945,8 @@ enum MetadataError<'a> {
NotPresent(&'a Path),
/// The file was present and invalid.
LoadFailure(String),
/// The file was present, but compiled with a different rustc version.
VersionMismatch { expected_version: String, found_version: String },
}
impl fmt::Display for MetadataError<'_> {
@ -941,6 +956,12 @@ impl fmt::Display for MetadataError<'_> {
f.write_str(&format!("no such file: '{}'", filename.display()))
}
MetadataError::LoadFailure(msg) => f.write_str(msg),
MetadataError::VersionMismatch { expected_version, found_version } => {
f.write_str(&format!(
"rustc version mismatch. expected {}, found {}",
expected_version, found_version,
))
}
}
}
}

24
compiler/rustc_metadata/src/rmeta/decoder.rs
View File

@ -684,13 +684,25 @@ impl<'a, 'tcx, I: Idx, T> Decodable<DecodeContext<'a, 'tcx>> for LazyTable<I, T>
implement_ty_decoder!(DecodeContext<'a, 'tcx>);
impl MetadataBlob {
pub(crate) fn is_compatible(&self) -> bool {
self.blob().starts_with(METADATA_HEADER)
}
pub(crate) fn check_compatibility(
&self,
cfg_version: &'static str,
) -> Result<(), Option<String>> {
if !self.blob().starts_with(METADATA_HEADER) {
if self.blob().starts_with(b"rust") {
return Err(Some("<unknown rustc version>".to_owned()));
}
return Err(None);
}
pub(crate) fn get_rustc_version(&self) -> String {
LazyValue::<String>::from_position(NonZero::new(METADATA_HEADER.len() + 8).unwrap())
.decode(self)
let found_version =
LazyValue::<String>::from_position(NonZero::new(METADATA_HEADER.len() + 8).unwrap())
.decode(self);
if rustc_version(cfg_version) != found_version {
return Err(Some(found_version));
}
Ok(())
}
fn root_pos(&self) -> NonZero<usize> {

2
compiler/rustc_middle/src/ty/instance.rs
View File

@ -30,7 +30,7 @@ pub struct Instance<'tcx> {
pub args: GenericArgsRef<'tcx>,
}
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
#[derive(TyEncodable, TyDecodable, HashStable, TypeFoldable, TypeVisitable, Lift)]
pub enum InstanceDef<'tcx> {
/// A user-defined callable item.

7
compiler/rustc_middle/src/ty/sty.rs
View File

@ -2008,13 +2008,10 @@ impl<'tcx> Ty<'tcx> {
// Single-argument Box is always global. (for "minicore" tests)
return true;
};
if let Some(alloc_adt) = alloc.expect_ty().ty_adt_def() {
alloc.expect_ty().ty_adt_def().is_some_and(|alloc_adt| {
let global_alloc = tcx.require_lang_item(LangItem::GlobalAlloc, None);
alloc_adt.did() == global_alloc
} else {
// Allocator is not an ADT...
false
}
})
}
_ => false,
}

2
compiler/rustc_parse/src/parser/diagnostics.rs
View File

@ -667,7 +667,7 @@ impl<'a> Parser<'a> {
{
err.note("you may be trying to write a c-string literal");
err.note("c-string literals require Rust 2021 or later");
HelpUseLatestEdition::new().add_to_diagnostic(&mut err);
err.subdiagnostic(self.dcx(), HelpUseLatestEdition::new());
}
// `pub` may be used for an item or `pub(crate)`

22
compiler/rustc_query_system/src/query/job.rs
View File

@ -17,10 +17,9 @@ use std::num::NonZero;
use {
parking_lot::{Condvar, Mutex},
rustc_data_structures::fx::FxHashSet,
rustc_data_structures::{defer, jobserver},
rustc_data_structures::jobserver,
rustc_span::DUMMY_SP,
std::iter,
std::process,
std::sync::Arc,
};
@ -514,12 +513,7 @@ fn remove_cycle(
/// There may be multiple cycles involved in a deadlock, so this searches
/// all active queries for cycles before finally resuming all the waiters at once.
#[cfg(parallel_compiler)]
pub fn deadlock(query_map: QueryMap, registry: &rayon_core::Registry) {
let on_panic = defer(|| {
eprintln!("deadlock handler panicked, aborting process");
process::abort();
});
pub fn break_query_cycles(query_map: QueryMap, registry: &rayon_core::Registry) {
let mut wakelist = Vec::new();
let mut jobs: Vec<QueryJobId> = query_map.keys().cloned().collect();
@ -539,19 +533,17 @@ pub fn deadlock(query_map: QueryMap, registry: &rayon_core::Registry) {
// X to Y due to Rayon waiting and a true dependency from Y to X. The algorithm here
// only considers the true dependency and won't detect a cycle.
if !found_cycle {
if query_map.len() == 0 {
panic!("deadlock detected without any query!")
} else {
panic!("deadlock detected! current query map:\n{:#?}", query_map);
}
panic!(
"deadlock detected as we're unable to find a query cycle to break\n\
current query map:\n{:#?}",
query_map
);
}
// FIXME: Ensure this won't cause a deadlock before we return
for waiter in wakelist.into_iter() {
waiter.notify(registry);
}
on_panic.disable();
}
#[inline(never)]

2
compiler/rustc_query_system/src/query/mod.rs
View File

@ -3,7 +3,7 @@ pub use self::plumbing::*;
mod job;
#[cfg(parallel_compiler)]
pub use self::job::deadlock;
pub use self::job::break_query_cycles;
pub use self::job::{
print_query_stack, report_cycle, QueryInfo, QueryJob, QueryJobId, QueryJobInfo, QueryMap,
};

1
compiler/rustc_span/src/symbol.rs
View File

@ -1450,6 +1450,7 @@ symbols! {
residual,
result,
resume,
retag_box_to_raw,
return_position_impl_trait_in_trait,
return_type_notation,
rhs,

37
compiler/rustc_ty_utils/src/instance.rs
View File

@ -7,6 +7,7 @@ use rustc_middle::ty::GenericArgsRef;
use rustc_middle::ty::{self, Instance, TyCtxt, TypeVisitableExt};
use rustc_span::sym;
use rustc_trait_selection::traits;
use rustc_type_ir::ClosureKind;
use traits::{translate_args, Reveal};
use crate::errors::UnexpectedFnPtrAssociatedItem;
@ -296,23 +297,25 @@ fn resolve_associated_item<'tcx>(
{
match *rcvr_args.type_at(0).kind() {
ty::CoroutineClosure(coroutine_closure_def_id, args) => {
// If we're computing `AsyncFnOnce`/`AsyncFnMut` for a by-ref closure,
// or `AsyncFnOnce` for a by-mut closure, then construct a new body that
// has the right return types.
//
// Specifically, `AsyncFnMut` for a by-ref coroutine-closure just needs
// to have its input and output types fixed (`&mut self` and returning
// `i16` coroutine kind).
if target_kind > args.as_coroutine_closure().kind() {
Some(Instance {
def: ty::InstanceDef::ConstructCoroutineInClosureShim {
coroutine_closure_def_id,
target_kind,
},
args,
})
} else {
Some(Instance::new(coroutine_closure_def_id, args))
match (target_kind, args.as_coroutine_closure().kind()) {
(ClosureKind::FnOnce | ClosureKind::FnMut, ClosureKind::Fn)
| (ClosureKind::FnOnce, ClosureKind::FnMut) => {
// If we're computing `AsyncFnOnce`/`AsyncFnMut` for a by-ref closure,
// or `AsyncFnOnce` for a by-mut closure, then construct a new body that
// has the right return types.
//
// Specifically, `AsyncFnMut` for a by-ref coroutine-closure just needs
// to have its input and output types fixed (`&mut self` and returning
// `i16` coroutine kind).
Some(Instance {
def: ty::InstanceDef::ConstructCoroutineInClosureShim {
coroutine_closure_def_id,
target_kind,
},
args,
})
}
_ => Some(Instance::new(coroutine_closure_def_id, args)),
}
}
ty::Closure(closure_def_id, args) => {

14
compiler/rustc_type_ir/src/lib.rs
View File

@ -369,12 +369,9 @@ rustc_index::newtype_index! {
///
/// You can get the environment type of a closure using
/// `tcx.closure_env_ty()`.
#[derive(Clone, Copy, PartialOrd, Ord, PartialEq, Eq, Hash, Debug)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
#[cfg_attr(feature = "nightly", derive(Encodable, Decodable, HashStable_NoContext))]
pub enum ClosureKind {
// Warning: Ordering is significant here! The ordering is chosen
// because the trait Fn is a subtrait of FnMut and so in turn, and
// hence we order it so that Fn < FnMut < FnOnce.
Fn,
FnMut,
FnOnce,
@ -394,8 +391,15 @@ impl ClosureKind {
/// Returns `true` if a type that impls this closure kind
/// must also implement `other`.
#[rustfmt::skip]
pub fn extends(self, other: ClosureKind) -> bool {
self <= other
use ClosureKind::*;
match (self, other) {
(Fn, Fn | FnMut | FnOnce)
| (FnMut, FnMut | FnOnce)
| (FnOnce, FnOnce) => true,
_ => false,
}
}
}

24
library/alloc/src/boxed.rs
View File

@ -155,6 +155,7 @@ use core::error::Error;
use core::fmt;
use core::future::Future;
use core::hash::{Hash, Hasher};
use core::intrinsics::retag_box_to_raw;
use core::iter::FusedIterator;
use core::marker::Tuple;
use core::marker::Unsize;
@ -1110,8 +1111,16 @@ impl<T: ?Sized, A: Allocator> Box<T, A> {
#[unstable(feature = "allocator_api", issue = "32838")]
#[inline]
pub fn into_raw_with_allocator(b: Self) -> (*mut T, A) {
let (leaked, alloc) = Box::into_unique(b);
(leaked.as_ptr(), alloc)
// This is the transition point from `Box` to raw pointers. For Stacked Borrows, these casts
// are relevant -- if this is a global allocator Box and we just get the pointer from `b.0`,
// it will have `Unique` permission, which is not what we want from a raw pointer. We could
// fix that by going through `&mut`, but then if this is *not* a global allocator Box, we'd
// be adding uniqueness assertions that we do not want. So for Miri's sake we pass this
// pointer through an intrinsic for box-to-raw casts, which can do the right thing wrt the
// aliasing model.
let b = mem::ManuallyDrop::new(b);
let alloc = unsafe { ptr::read(&b.1) };
(unsafe { retag_box_to_raw::<T, A>(b.0.as_ptr()) }, alloc)
}
#[unstable(
@ -1122,13 +1131,8 @@ impl<T: ?Sized, A: Allocator> Box<T, A> {
#[inline]
#[doc(hidden)]
pub fn into_unique(b: Self) -> (Unique<T>, A) {
// Box is recognized as a "unique pointer" by Stacked Borrows, but internally it is a
// raw pointer for the type system. Turning it directly into a raw pointer would not be
// recognized as "releasing" the unique pointer to permit aliased raw accesses,
// so all raw pointer methods have to go through `Box::leak`. Turning *that* to a raw pointer
// behaves correctly.
let alloc = unsafe { ptr::read(&b.1) };
(Unique::from(Box::leak(b)), alloc)
let (ptr, alloc) = Box::into_raw_with_allocator(b);
unsafe { (Unique::from(&mut *ptr), alloc) }
}
/// Returns a reference to the underlying allocator.
@ -1184,7 +1188,7 @@ impl<T: ?Sized, A: Allocator> Box<T, A> {
where
A: 'a,
{
unsafe { &mut *mem::ManuallyDrop::new(b).0.as_ptr() }
unsafe { &mut *Box::into_raw(b) }
}
/// Converts a `Box<T>` into a `Pin<Box<T>>`. If `T` does not implement [`Unpin`], then

11
library/core/src/any.rs
View File

@ -605,7 +605,9 @@ impl dyn Any + Send + Sync {
#[derive(Clone, Copy, Debug, Eq, PartialOrd, Ord)]
#[stable(feature = "rust1", since = "1.0.0")]
pub struct TypeId {
t: u128,
// We avoid using `u128` because that imposes higher alignment requirements on many platforms.
// See issue #115620 for more information.
t: (u64, u64),
}
#[stable(feature = "rust1", since = "1.0.0")]
@ -637,7 +639,10 @@ impl TypeId {
#[rustc_const_unstable(feature = "const_type_id", issue = "77125")]
pub const fn of<T: ?Sized + 'static>() -> TypeId {
let t: u128 = intrinsics::type_id::<T>();
TypeId { t }
let t1 = (t >> 64) as u64;
let t2 = t as u64;
TypeId { t: (t1, t2) }
}
}
@ -657,7 +662,7 @@ impl hash::Hash for TypeId {
// - It is correct to do so -- only hashing a subset of `self` is still
// with an `Eq` implementation that considers the entire value, as
// ours does.
(self.t as u64).hash(state);
self.t.1.hash(state);
}
}

14
library/core/src/intrinsics.rs
View File

@ -2695,6 +2695,19 @@ pub unsafe fn vtable_size(_ptr: *const ()) -> usize {
unreachable!()
}
/// Retag a box pointer as part of casting it to a raw pointer. This is the `Box` equivalent of
/// `(x: &mut T) as *mut T`. The input pointer must be the pointer of a `Box` (passed as raw pointer
/// to avoid all questions around move semantics and custom allocators), and `A` must be the `Box`'s
/// allocator.
#[unstable(feature = "core_intrinsics", issue = "none")]
#[rustc_nounwind]
#[cfg_attr(not(bootstrap), rustc_intrinsic)]
#[cfg_attr(bootstrap, inline)]
pub unsafe fn retag_box_to_raw<T: ?Sized, A>(ptr: *mut T) -> *mut T {
// Miri needs to adjust the provenance, but for regular codegen this is not needed
ptr
}
// Some functions are defined here because they accidentally got made
// available in this module on stable. See <https://github.com/rust-lang/rust/issues/15702>.
// (`transmute` also falls into this category, but it cannot be wrapped due to the
@ -3120,6 +3133,7 @@ pub(crate) const fn miri_promise_symbolic_alignment(ptr: *const (), align: usize
const fn compiletime(_ptr: *const (), _align: usize) {}
#[cfg_attr(not(bootstrap), allow(unused_unsafe))] // on bootstrap bump, remove unsafe block
// SAFETY: the extra behavior at runtime is for UB checks only.
unsafe {
const_eval_select((ptr, align), compiletime, runtime);

6
library/core/src/ptr/const_ptr.rs
View File

@ -1628,12 +1628,12 @@ impl<T: ?Sized> *const T {
#[inline]
const fn const_impl(ptr: *const (), align: usize) -> bool {
// We can't use the address of `self` in a `const fn`, so we use `align_offset` instead.
// The cast to `()` is used to
// 1. deal with fat pointers; and
// 2. ensure that `align_offset` doesn't actually try to compute an offset.
ptr.align_offset(align) == 0
}
// The cast to `()` is used to
// 1. deal with fat pointers; and
// 2. ensure that `align_offset` (in `const_impl`) doesn't actually try to compute an offset.
#[cfg_attr(not(bootstrap), allow(unused_unsafe))] // on bootstrap bump, remove unsafe block
// SAFETY: The two versions are equivalent at runtime.
unsafe {

6
library/core/src/ptr/mut_ptr.rs
View File

@ -1900,12 +1900,12 @@ impl<T: ?Sized> *mut T {
#[inline]
const fn const_impl(ptr: *mut (), align: usize) -> bool {
// We can't use the address of `self` in a `const fn`, so we use `align_offset` instead.
// The cast to `()` is used to
// 1. deal with fat pointers; and
// 2. ensure that `align_offset` doesn't actually try to compute an offset.
ptr.align_offset(align) == 0
}
// The cast to `()` is used to
// 1. deal with fat pointers; and
// 2. ensure that `align_offset` (in `const_impl`) doesn't actually try to compute an offset.
#[cfg_attr(not(bootstrap), allow(unused_unsafe))] // on bootstrap bump, remove unsafe block
// SAFETY: The two versions are equivalent at runtime.
unsafe {

4
src/ci/docker/host-x86_64/x86_64-gnu-llvm-17/Dockerfile
View File

@ -42,6 +42,10 @@ RUN sh /scripts/sccache.sh
ENV NO_DOWNLOAD_CI_LLVM 1
ENV EXTERNAL_LLVM 1
# This is not the latest LLVM version, so some components required by tests may
# be missing.
ENV IS_NOT_LATEST_LLVM 1
# Using llvm-link-shared due to libffi issues -- see #34486
ENV RUST_CONFIGURE_ARGS \
--build=x86_64-unknown-linux-gnu \

55
src/ci/docker/host-x86_64/x86_64-gnu-llvm-18/Dockerfile Normal file
View File

@ -0,0 +1,55 @@
FROM ubuntu:24.04
ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y --no-install-recommends \
g++ \
gcc-multilib \
make \
ninja-build \
file \
curl \
ca-certificates \
python3 \
git \
cmake \
sudo \
gdb \
llvm-18-tools \
llvm-18-dev \
libedit-dev \
libssl-dev \
pkg-config \
zlib1g-dev \
xz-utils \
nodejs \
mingw-w64 \
libgccjit-13-dev \
&& rm -rf /var/lib/apt/lists/*
# Note: libgccjit needs to match the default gcc version for the linker to find it.
# Install powershell (universal package) so we can test x.ps1 on Linux
# FIXME: need a "universal" version that supports libicu74, but for now it still works to ignore that dep.
RUN curl -sL "https://github.com/PowerShell/PowerShell/releases/download/v7.3.1/powershell_7.3.1-1.deb_amd64.deb" > powershell.deb && \
dpkg --ignore-depends=libicu72 -i powershell.deb && \
rm -f powershell.deb
COPY scripts/sccache.sh /scripts/
RUN sh /scripts/sccache.sh
# We are disabling CI LLVM since this builder is intentionally using a host
# LLVM, rather than the typical src/llvm-project LLVM.
ENV NO_DOWNLOAD_CI_LLVM 1
ENV EXTERNAL_LLVM 1
# Using llvm-link-shared due to libffi issues -- see #34486
ENV RUST_CONFIGURE_ARGS \
--build=x86_64-unknown-linux-gnu \
--llvm-root=/usr/lib/llvm-18 \
--enable-llvm-link-shared \
--set rust.thin-lto-import-instr-limit=10
COPY host-x86_64/x86_64-gnu-llvm-16/script.sh /tmp/
ENV SCRIPT /tmp/script.sh

5
src/ci/github-actions/ci.yml
View File

@ -510,6 +510,11 @@ jobs:
- name: x86_64-gnu-distcheck
<<: *job-linux-8c
- name: x86_64-gnu-llvm-18
env:
RUST_BACKTRACE: 1
<<: *job-linux-8c
- name: x86_64-gnu-llvm-17
env:
RUST_BACKTRACE: 1

15
src/tools/miri/src/borrow_tracker/mod.rs
View File

@ -5,7 +5,7 @@ use std::num::NonZero;
use smallvec::SmallVec;
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
use rustc_middle::mir::RetagKind;
use rustc_middle::{mir::RetagKind, ty::Ty};
use rustc_target::abi::Size;
use crate::*;
@ -291,6 +291,19 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
}
}
fn retag_box_to_raw(
&mut self,
val: &ImmTy<'tcx, Provenance>,
alloc_ty: Ty<'tcx>,
) -> InterpResult<'tcx, ImmTy<'tcx, Provenance>> {
let this = self.eval_context_mut();
let method = this.machine.borrow_tracker.as_ref().unwrap().borrow().borrow_tracker_method;
match method {
BorrowTrackerMethod::StackedBorrows => this.sb_retag_box_to_raw(val, alloc_ty),
BorrowTrackerMethod::TreeBorrows => this.tb_retag_box_to_raw(val, alloc_ty),
}
}
fn retag_place_contents(
&mut self,
kind: RetagKind,

34
src/tools/miri/src/borrow_tracker/stacked_borrows/mod.rs
View File

@ -865,6 +865,24 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
this.sb_retag_reference(val, new_perm, RetagInfo { cause, in_field: false })
}
fn sb_retag_box_to_raw(
&mut self,
val: &ImmTy<'tcx, Provenance>,
alloc_ty: Ty<'tcx>,
) -> InterpResult<'tcx, ImmTy<'tcx, Provenance>> {
let this = self.eval_context_mut();
let is_global_alloc = alloc_ty.ty_adt_def().is_some_and(|adt| {
let global_alloc = this.tcx.require_lang_item(rustc_hir::LangItem::GlobalAlloc, None);
adt.did() == global_alloc
});
if is_global_alloc {
// Retag this as-if it was a mutable reference.
this.sb_retag_ptr_value(RetagKind::Raw, val)
} else {
Ok(val.clone())
}
}
fn sb_retag_place_contents(
&mut self,
kind: RetagKind,
@ -916,10 +934,18 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
self.ecx
}
fn visit_box(&mut self, place: &PlaceTy<'tcx, Provenance>) -> InterpResult<'tcx> {
// Boxes get a weak protectors, since they may be deallocated.
let new_perm = NewPermission::from_box_ty(place.layout.ty, self.kind, self.ecx);
self.retag_ptr_inplace(place, new_perm)
fn visit_box(
&mut self,
box_ty: Ty<'tcx>,
place: &PlaceTy<'tcx, Provenance>,
) -> InterpResult<'tcx> {
// Only boxes for the global allocator get any special treatment.
if box_ty.is_box_global(*self.ecx.tcx) {
// Boxes get a weak protectors, since they may be deallocated.
let new_perm = NewPermission::from_box_ty(place.layout.ty, self.kind, self.ecx);
self.retag_ptr_inplace(place, new_perm)?;
}
Ok(())
}
fn visit_value(&mut self, place: &PlaceTy<'tcx, Provenance>) -> InterpResult<'tcx> {

33
src/tools/miri/src/borrow_tracker/tree_borrows/mod.rs
View File

@ -392,6 +392,15 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
}
}
fn tb_retag_box_to_raw(
&mut self,
val: &ImmTy<'tcx, Provenance>,
_alloc_ty: Ty<'tcx>,
) -> InterpResult<'tcx, ImmTy<'tcx, Provenance>> {
// Casts to raw pointers are NOPs in Tree Borrows.
Ok(val.clone())
}
/// Retag all pointers that are stored in this place.
fn tb_retag_place_contents(
&mut self,
@ -441,14 +450,22 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
/// Regardless of how `Unique` is handled, Boxes are always reborrowed.
/// When `Unique` is also reborrowed, then it behaves exactly like `Box`
/// except for the fact that `Box` has a non-zero-sized reborrow.
fn visit_box(&mut self, place: &PlaceTy<'tcx, Provenance>) -> InterpResult<'tcx> {
let new_perm = NewPermission::from_unique_ty(
place.layout.ty,
self.kind,
self.ecx,
/* zero_size */ false,
);
self.retag_ptr_inplace(place, new_perm)
fn visit_box(
&mut self,
box_ty: Ty<'tcx>,
place: &PlaceTy<'tcx, Provenance>,
) -> InterpResult<'tcx> {
// Only boxes for the global allocator get any special treatment.
if box_ty.is_box_global(*self.ecx.tcx) {
let new_perm = NewPermission::from_unique_ty(
place.layout.ty,
self.kind,
self.ecx,
/* zero_size */ false,
);
self.retag_ptr_inplace(place, new_perm)?;
}
Ok(())
}
fn visit_value(&mut self, place: &PlaceTy<'tcx, Provenance>) -> InterpResult<'tcx> {

13
src/tools/miri/src/shims/intrinsics/mod.rs
View File

@ -129,6 +129,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
this.write_bytes_ptr(ptr, iter::repeat(val_byte).take(byte_count.bytes_usize()))?;
}
// Memory model / provenance manipulation
"ptr_mask" => {
let [ptr, mask] = check_arg_count(args)?;
@ -139,6 +140,18 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
this.write_pointer(Pointer::new(ptr.provenance, masked_addr), dest)?;
}
"retag_box_to_raw" => {
let [ptr] = check_arg_count(args)?;
let alloc_ty = generic_args[1].expect_ty();
let val = this.read_immediate(ptr)?;
let new_val = if this.machine.borrow_tracker.is_some() {
this.retag_box_to_raw(&val, alloc_ty)?
} else {
val
};
this.write_immediate(*new_val, dest)?;
}
// We want to return either `true` or `false` at random, or else something like
// ```

123
src/tools/miri/tests/pass/box-custom-alloc-aliasing.rs Normal file
View File

@ -0,0 +1,123 @@
//! Regression test for <https://github.com/rust-lang/miri/issues/3341>:
//! If `Box` has a local allocator, then it can't be `noalias` as the allocator
//! may want to access allocator state based on the data pointer.
//@revisions: stack tree
//@[tree]compile-flags: -Zmiri-tree-borrows
#![feature(allocator_api)]
#![feature(strict_provenance)]
use std::{
alloc::{AllocError, Allocator, Layout},
cell::{Cell, UnsafeCell},
ptr::{self, addr_of, NonNull},
thread::{self, ThreadId},
mem,
};
const BIN_SIZE: usize = 8;
// A bin represents a collection of blocks of a specific layout.
#[repr(align(128))]
struct MyBin {
top: Cell<usize>,
thread_id: ThreadId,
memory: UnsafeCell<[usize; BIN_SIZE]>,
}
impl MyBin {
fn pop(&self) -> Option<NonNull<u8>> {
let top = self.top.get();
if top == BIN_SIZE {
return None;
}
// Cast the *entire* thing to a raw pointer to not restrict its provenance.
let bin = self as *const MyBin;
let base_ptr = UnsafeCell::raw_get(unsafe{ addr_of!((*bin).memory )}).cast::<usize>();
let ptr = unsafe { NonNull::new_unchecked(base_ptr.add(top)) };
self.top.set(top + 1);
Some(ptr.cast())
}
// Pretends to not be a throwaway allocation method like this. A more realistic
// substitute is using intrusive linked lists, which requires access to the
// metadata of this bin as well.
unsafe fn push(&self, ptr: NonNull<u8>) {
// For now just check that this really is in this bin.
let start = self.memory.get().addr();
let end = start + BIN_SIZE * mem::size_of::<usize>();
let addr = ptr.addr().get();
assert!((start..end).contains(&addr));
}
}
// A collection of bins.
struct MyAllocator {
thread_id: ThreadId,
// Pretends to be some complex collection of bins, such as an array of linked lists.
bins: Box<[MyBin; 1]>,
}
impl MyAllocator {
fn new() -> Self {
let thread_id = thread::current().id();
MyAllocator {
thread_id,
bins: Box::new(
[MyBin {
top: Cell::new(0),
thread_id,
memory: UnsafeCell::default(),
}; 1],
),
}
}
// Pretends to be expensive finding a suitable bin for the layout.
fn find_bin(&self, layout: Layout) -> Option<&MyBin> {
if layout == Layout::new::<usize>() {
Some(&self.bins[0])
} else {
None
}
}
}
unsafe impl Allocator for MyAllocator {
fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError> {
// Expensive bin search.
let bin = self.find_bin(layout).ok_or(AllocError)?;
let ptr = bin.pop().ok_or(AllocError)?;
Ok(NonNull::slice_from_raw_parts(ptr, layout.size()))
}
unsafe fn deallocate(&self, ptr: NonNull<u8>, _layout: Layout) {
// Since manually finding the corresponding bin of `ptr` is very expensive,
// doing pointer arithmetics is preferred.
// But this means we access `top` via `ptr` rather than `self`!
// That is fundamentally the source of the aliasing trouble in this example.
let their_bin = ptr.as_ptr().map_addr(|addr| addr & !127).cast::<MyBin>();
let thread_id = ptr::read(ptr::addr_of!((*their_bin).thread_id));
if self.thread_id == thread_id {
unsafe { (*their_bin).push(ptr) };
} else {
todo!("Deallocating from another thread")
}
}
}
// Make sure to involve `Box` in allocating these,
// as that's where `noalias` may come from.
fn v<T, A: Allocator>(t: T, a: A) -> Vec<T, A> {
(Box::new_in([t], a) as Box<[T], A>).into_vec()
}
fn main() {
assert!(mem::size_of::<MyBin>() <= 128); // if it grows bigger, the trick to access the "header" no longer works
let my_alloc = MyAllocator::new();
let a = v(1usize, &my_alloc);
let b = v(2usize, &my_alloc);
assert_eq!(a[0] + 1, b[0]);
assert_eq!(addr_of!(a[0]).wrapping_add(1), addr_of!(b[0]));
drop((a, b));
}

2
src/tools/tidy/src/main.rs
View File

@ -102,7 +102,7 @@ fn main() {
check!(tests_placement, &root_path);
check!(tests_revision_unpaired_stdout_stderr, &tests_path);
check!(debug_artifacts, &tests_path);
check!(ui_tests, &tests_path, bless);
check!(ui_tests, &root_path, bless);
check!(mir_opt_tests, &tests_path, bless);
check!(rustdoc_gui_tests, &tests_path);
check!(rustdoc_css_themes, &librustdoc_path);

5
src/tools/tidy/src/ui_tests.rs
View File

@ -99,7 +99,8 @@ fn check_entries(tests_path: &Path, bad: &mut bool) {
}
}
pub fn check(path: &Path, bless: bool, bad: &mut bool) {
pub fn check(root_path: &Path, bless: bool, bad: &mut bool) {
let path = &root_path.join("tests");
check_entries(&path, bad);
// the list of files in ui tests that are allowed to start with `issue-XXXX`
@ -193,7 +194,7 @@ pub fn check(path: &Path, bless: bool, bad: &mut bool) {
*/
[
"#;
let tidy_src = std::env::current_dir().unwrap().join("src/tools/tidy/src");
let tidy_src = root_path.join("src/tools/tidy/src");
// instead of overwriting the file, recreate it and use an "atomic rename"
// so we don't bork things on panic or a contributor using Ctrl+C
let blessed_issues_path = tidy_src.join("issues_blessed.txt");

22
tests/ui/lint/non_local_definitions.rs
View File

@ -1,7 +1,7 @@
//@ check-pass
//@ edition:2021
//@ aux-build:non_local_macro.rs
//@ rustc-env:CARGO=/usr/bin/cargo
//@ rustc-env:CARGO_CRATE_NAME=non_local_def
#![feature(inline_const)]
#![warn(non_local_definitions)]
@ -245,6 +245,26 @@ fn bad() {
//~^ WARN non-local `impl` definition
}
trait Uto9 {}
trait Uto10 {}
const _: u32 = {
let _a = || {
impl Uto9 for Test {}
//~^ WARN non-local `impl` definition
1
};
type A = [u32; {
impl Uto10 for Test {}
//~^ WARN non-local `impl` definition
1
}];
1
};
struct UwU<T>(T);
fn fun() {

50
tests/ui/lint/non_local_definitions.stderr
View File

@ -442,7 +442,29 @@ LL | impl<T> Uto8 for T {}
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:253:5
--> $DIR/non_local_definitions.rs:252:9
|
LL | impl Uto9 for Test {}
| ^^^^^^^^^^^^^^^^^^^^^
|
= help: move this `impl` block outside the of the current closure `<unnameable>` and up 2 bodies
= note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
= note: one exception to the rule are anon-const (`const _: () = { ... }`) at top-level module and anon-const at the same nesting as the trait or type
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:259:9
|
LL | impl Uto10 for Test {}
| ^^^^^^^^^^^^^^^^^^^^^^
|
= help: move this `impl` block outside the of the current constant expression `<unnameable>` and up 2 bodies
= note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
= note: one exception to the rule are anon-const (`const _: () = { ... }`) at top-level module and anon-const at the same nesting as the trait or type
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:273:5
|
LL | / impl Default for UwU<OwO> {
LL | |
@ -458,7 +480,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:264:5
--> $DIR/non_local_definitions.rs:284:5
|
LL | / impl From<Cat> for () {
LL | |
@ -474,7 +496,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:273:5
--> $DIR/non_local_definitions.rs:293:5
|
LL | / impl AsRef<Cat> for () {
LL | |
@ -488,7 +510,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:284:5
--> $DIR/non_local_definitions.rs:304:5
|
LL | / impl PartialEq<B> for G {
LL | |
@ -504,7 +526,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:301:5
--> $DIR/non_local_definitions.rs:321:5
|
LL | / impl PartialEq<Dog> for &Dog {
LL | |
@ -520,7 +542,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:308:5
--> $DIR/non_local_definitions.rs:328:5
|
LL | / impl PartialEq<()> for Dog {
LL | |
@ -536,7 +558,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:315:5
--> $DIR/non_local_definitions.rs:335:5
|
LL | / impl PartialEq<()> for &Dog {
LL | |
@ -552,7 +574,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:322:5
--> $DIR/non_local_definitions.rs:342:5
|
LL | / impl PartialEq<Dog> for () {
LL | |
@ -568,7 +590,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:344:5
--> $DIR/non_local_definitions.rs:364:5
|
LL | / impl From<Wrap<Wrap<Lion>>> for () {
LL | |
@ -584,7 +606,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:351:5
--> $DIR/non_local_definitions.rs:371:5
|
LL | / impl From<()> for Wrap<Lion> {
LL | |
@ -600,7 +622,7 @@ LL | | }
= note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:364:13
--> $DIR/non_local_definitions.rs:384:13
|
LL | impl MacroTrait for OutsideStruct {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -615,7 +637,7 @@ LL | m!();
= note: this warning originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: non-local `impl` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:374:1
--> $DIR/non_local_definitions.rs:394:1
|
LL | non_local_macro::non_local_impl!(CargoUpdate);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -628,7 +650,7 @@ LL | non_local_macro::non_local_impl!(CargoUpdate);
= note: this warning originates in the macro `non_local_macro::non_local_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: non-local `macro_rules!` definition, they should be avoided as they go against expectation
--> $DIR/non_local_definitions.rs:377:1
--> $DIR/non_local_definitions.rs:397:1
|
LL | non_local_macro::non_local_macro_rules!(my_macro);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -640,5 +662,5 @@ LL | non_local_macro::non_local_macro_rules!(my_macro);
= note: the macro `non_local_macro::non_local_macro_rules` may come from an old version of the `non_local_macro` crate, try updating your dependency with `cargo update -p non_local_macro`
= note: this warning originates in the macro `non_local_macro::non_local_macro_rules` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: 50 warnings emitted
warning: 52 warnings emitted

5
tests/ui/parser/help-set-edition-ice-122130.rs Normal file
View File

@ -0,0 +1,5 @@
enum will {
s#[c"owned_box"]
//~^ERROR expected one of `(`, `,`, `=`, `{`, or `}`, found `#`
//~|ERROR expected item, found `"owned_box"`
}

21
tests/ui/parser/help-set-edition-ice-122130.stderr Normal file
View File

@ -0,0 +1,21 @@
error: expected one of `(`, `,`, `=`, `{`, or `}`, found `#`
--> $DIR/help-set-edition-ice-122130.rs:2:6
|
LL | s#[c"owned_box"]
| ^ expected one of `(`, `,`, `=`, `{`, or `}`
|
= note: you may be trying to write a c-string literal
= note: c-string literals require Rust 2021 or later
= help: pass `--edition 2021` to `rustc`
= note: for more on editions, read https://doc.rust-lang.org/edition-guide
error: expected item, found `"owned_box"`
--> $DIR/help-set-edition-ice-122130.rs:2:9
|
LL | s#[c"owned_box"]
| ^^^^^^^^^^^ expected item
|
= note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
error: aborting due to 2 previous errors

13
tests/ui/trait-bounds/ice-unsized-struct-arg-issue-121612.rs Normal file
View File

@ -0,0 +1,13 @@
// Regression test for issue #121612
trait Trait {}
impl Trait for bool {}
struct MySlice<T: FnOnce(&T, Idx) -> Idx>(bool, T);
//~^ ERROR cannot find type `Idx` in this scope
//~| ERROR cannot find type `Idx` in this scope
type MySliceBool = MySlice<[bool]>;
const MYSLICE_GOOD: &MySliceBool = &MySlice(true, [false]);
//~^ ERROR the size for values of type `[bool]` cannot be known at compilation time
//~| ERROR the size for values of type `[bool]` cannot be known at compilation time
fn main() {}

57
tests/ui/trait-bounds/ice-unsized-struct-arg-issue-121612.stderr Normal file
View File

@ -0,0 +1,57 @@
error[E0412]: cannot find type `Idx` in this scope
--> $DIR/ice-unsized-struct-arg-issue-121612.rs:5:30
|
LL | struct MySlice<T: FnOnce(&T, Idx) -> Idx>(bool, T);
| ^^^ not found in this scope
error[E0412]: cannot find type `Idx` in this scope
--> $DIR/ice-unsized-struct-arg-issue-121612.rs:5:38
|
LL | struct MySlice<T: FnOnce(&T, Idx) -> Idx>(bool, T);
| ^^^ not found in this scope
error[E0277]: the size for values of type `[bool]` cannot be known at compilation time
--> $DIR/ice-unsized-struct-arg-issue-121612.rs:9:22
|
LL | const MYSLICE_GOOD: &MySliceBool = &MySlice(true, [false]);
| ^^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `[bool]`
note: required by an implicit `Sized` bound in `MySlice`
--> $DIR/ice-unsized-struct-arg-issue-121612.rs:5:16
|
LL | struct MySlice<T: FnOnce(&T, Idx) -> Idx>(bool, T);
| ^ required by the implicit `Sized` requirement on this type parameter in `MySlice`
help: you could relax the implicit `Sized` bound on `T` if it were used through indirection like `&T` or `Box<T>`
--> $DIR/ice-unsized-struct-arg-issue-121612.rs:5:16
|
LL | struct MySlice<T: FnOnce(&T, Idx) -> Idx>(bool, T);
| ^ - ...if indirection were used here: `Box<T>`
| |
| this could be changed to `T: ?Sized`...
error[E0277]: the size for values of type `[bool]` cannot be known at compilation time
--> $DIR/ice-unsized-struct-arg-issue-121612.rs:9:22
|
LL | const MYSLICE_GOOD: &MySliceBool = &MySlice(true, [false]);
| ^^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `[bool]`
note: required by an implicit `Sized` bound in `MySlice`
--> $DIR/ice-unsized-struct-arg-issue-121612.rs:5:16
|
LL | struct MySlice<T: FnOnce(&T, Idx) -> Idx>(bool, T);
| ^ required by the implicit `Sized` requirement on this type parameter in `MySlice`
help: you could relax the implicit `Sized` bound on `T` if it were used through indirection like `&T` or `Box<T>`
--> $DIR/ice-unsized-struct-arg-issue-121612.rs:5:16
|
LL | struct MySlice<T: FnOnce(&T, Idx) -> Idx>(bool, T);
| ^ - ...if indirection were used here: `Box<T>`
| |
| this could be changed to `T: ?Sized`...
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
error: aborting due to 4 previous errors
Some errors have detailed explanations: E0277, E0412.
For more information about an error, try `rustc --explain E0277`.

9
tests/ui/trait-bounds/ice-unsized-struct-arg-issue2-121424.rs Normal file
View File

@ -0,0 +1,9 @@
// Regression test for issue #121424
#[repr(C)]
struct MySlice<T: Copy>(bool, T);
type MySliceBool = MySlice<[bool]>;
const MYSLICE_GOOD: &MySliceBool = &MySlice(true, [false]);
//~^ ERROR the trait bound `[bool]: Copy` is not satisfied
//~| ERROR the trait bound `[bool]: Copy` is not satisfied
fn main() {}

30
tests/ui/trait-bounds/ice-unsized-struct-arg-issue2-121424.stderr Normal file
View File

@ -0,0 +1,30 @@
error[E0277]: the trait bound `[bool]: Copy` is not satisfied
--> $DIR/ice-unsized-struct-arg-issue2-121424.rs:5:22
|
LL | const MYSLICE_GOOD: &MySliceBool = &MySlice(true, [false]);
| ^^^^^^^^^^^ the trait `Copy` is not implemented for `[bool]`
|
= help: the trait `Copy` is implemented for `[T; N]`
note: required by a bound in `MySlice`
--> $DIR/ice-unsized-struct-arg-issue2-121424.rs:3:19
|
LL | struct MySlice<T: Copy>(bool, T);
| ^^^^ required by this bound in `MySlice`
error[E0277]: the trait bound `[bool]: Copy` is not satisfied
--> $DIR/ice-unsized-struct-arg-issue2-121424.rs:5:22
|
LL | const MYSLICE_GOOD: &MySliceBool = &MySlice(true, [false]);
| ^^^^^^^^^^^ the trait `Copy` is not implemented for `[bool]`
|
= help: the trait `Copy` is implemented for `[T; N]`
note: required by a bound in `MySlice`
--> $DIR/ice-unsized-struct-arg-issue2-121424.rs:3:19
|
LL | struct MySlice<T: Copy>(bool, T);
| ^^^^ required by this bound in `MySlice`
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.