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Auto merge of rust-lang#127533 - matthiaskrgr:rollup-k5baw6l, r=matth…
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Rollup of 10 pull requests

Successful merges:

 - rust-lang#124339 (allow overwriting the output of `rustc --version`)
 - rust-lang#125627 (migration lint for `expr2024` for the edition 2024)
 - rust-lang#127091 (impl FusedIterator and a size hint for the error sources iter)
 - rust-lang#127358 (Automatically taint when reporting errors from ItemCtxt)
 - rust-lang#127484 (`#[doc(alias)]`'s doc: say that ASCII spaces are allowed)
 - rust-lang#127495 (More trait error reworking)
 - rust-lang#127496 (Update `f16`/`f128` FIXMEs that needed `(NEG_)INFINITY`)
 - rust-lang#127508 (small search graph refactor)
 - rust-lang#127521 (Remove spastorino from SMIR)
 - rust-lang#127532 (documentation: update cmake version)

r? `@ghost`
`@rustbot` modify labels: rollup
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bors committed Jul 9, 2024
2 parents 9dcaa7f + 53aae31 commit 9564092
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2 changes: 1 addition & 1 deletion INSTALL.md
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ If building LLVM from source, you'll need additional tools:
[LLVM's documentation](https://llvm.org/docs/GettingStarted.html#host-c-toolchain-both-compiler-and-standard-library)
* `ninja`, or GNU `make` 3.81 or later (Ninja is recommended, especially on
Windows)
* `cmake` 3.13.4 or later
* `cmake` version listed on [LLVM's documentation](https://llvm.org/docs/GettingStarted.html#software)
* `libstdc++-static` may be required on some Linux distributions such as Fedora
and Ubuntu

Expand Down
9 changes: 9 additions & 0 deletions compiler/rustc_driver_impl/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -908,6 +908,15 @@ pub fn version_at_macro_invocation(
) {
let verbose = matches.opt_present("verbose");

let mut version = version;
let mut release = release;
let tmp;
if let Ok(force_version) = std::env::var("RUSTC_FORCE_RUSTC_VERSION") {
tmp = force_version;
version = &tmp;
release = &tmp;
}

safe_println!("{binary} {version}");

if verbose {
Expand Down
100 changes: 67 additions & 33 deletions compiler/rustc_hir_analysis/src/collect.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,9 @@ use rustc_ast::Recovered;
use rustc_data_structures::captures::Captures;
use rustc_data_structures::fx::{FxHashSet, FxIndexMap};
use rustc_data_structures::unord::UnordMap;
use rustc_errors::{struct_span_code_err, Applicability, Diag, ErrorGuaranteed, StashKey, E0228};
use rustc_errors::{
struct_span_code_err, Applicability, Diag, DiagCtxtHandle, ErrorGuaranteed, StashKey, E0228,
};
use rustc_hir::def::DefKind;
use rustc_hir::def_id::{DefId, LocalDefId};
use rustc_hir::intravisit::{self, walk_generics, Visitor};
Expand Down Expand Up @@ -161,7 +163,7 @@ pub struct CollectItemTypesVisitor<'tcx> {
/// and suggest adding type parameters in the appropriate place, taking into consideration any and
/// all already existing generic type parameters to avoid suggesting a name that is already in use.
pub(crate) fn placeholder_type_error<'tcx>(
tcx: TyCtxt<'tcx>,
cx: &dyn HirTyLowerer<'tcx>,
generics: Option<&hir::Generics<'_>>,
placeholder_types: Vec<Span>,
suggest: bool,
Expand All @@ -172,21 +174,21 @@ pub(crate) fn placeholder_type_error<'tcx>(
return;
}

placeholder_type_error_diag(tcx, generics, placeholder_types, vec![], suggest, hir_ty, kind)
placeholder_type_error_diag(cx, generics, placeholder_types, vec![], suggest, hir_ty, kind)
.emit();
}

pub(crate) fn placeholder_type_error_diag<'tcx>(
tcx: TyCtxt<'tcx>,
pub(crate) fn placeholder_type_error_diag<'cx, 'tcx>(
cx: &'cx dyn HirTyLowerer<'tcx>,
generics: Option<&hir::Generics<'_>>,
placeholder_types: Vec<Span>,
additional_spans: Vec<Span>,
suggest: bool,
hir_ty: Option<&hir::Ty<'_>>,
kind: &'static str,
) -> Diag<'tcx> {
) -> Diag<'cx> {
if placeholder_types.is_empty() {
return bad_placeholder(tcx, additional_spans, kind);
return bad_placeholder(cx, additional_spans, kind);
}

let params = generics.map(|g| g.params).unwrap_or_default();
Expand All @@ -210,7 +212,7 @@ pub(crate) fn placeholder_type_error_diag<'tcx>(
}

let mut err =
bad_placeholder(tcx, placeholder_types.into_iter().chain(additional_spans).collect(), kind);
bad_placeholder(cx, placeholder_types.into_iter().chain(additional_spans).collect(), kind);

// Suggest, but only if it is not a function in const or static
if suggest {
Expand All @@ -224,7 +226,7 @@ pub(crate) fn placeholder_type_error_diag<'tcx>(

// Check if parent is const or static
is_const_or_static = matches!(
tcx.parent_hir_node(hir_ty.hir_id),
cx.tcx().parent_hir_node(hir_ty.hir_id),
Node::Item(&hir::Item {
kind: hir::ItemKind::Const(..) | hir::ItemKind::Static(..),
..
Expand Down Expand Up @@ -267,7 +269,16 @@ fn reject_placeholder_type_signatures_in_item<'tcx>(
let mut visitor = HirPlaceholderCollector::default();
visitor.visit_item(item);

placeholder_type_error(tcx, Some(generics), visitor.0, suggest, None, item.kind.descr());
let icx = ItemCtxt::new(tcx, item.owner_id.def_id);

placeholder_type_error(
icx.lowerer(),
Some(generics),
visitor.0,
suggest,
None,
item.kind.descr(),
);
}

impl<'tcx> Visitor<'tcx> for CollectItemTypesVisitor<'tcx> {
Expand Down Expand Up @@ -329,15 +340,15 @@ impl<'tcx> Visitor<'tcx> for CollectItemTypesVisitor<'tcx> {
///////////////////////////////////////////////////////////////////////////
// Utility types and common code for the above passes.

fn bad_placeholder<'tcx>(
tcx: TyCtxt<'tcx>,
fn bad_placeholder<'cx, 'tcx>(
cx: &'cx dyn HirTyLowerer<'tcx>,
mut spans: Vec<Span>,
kind: &'static str,
) -> Diag<'tcx> {
) -> Diag<'cx> {
let kind = if kind.ends_with('s') { format!("{kind}es") } else { format!("{kind}s") };

spans.sort();
tcx.dcx().create_err(errors::PlaceholderNotAllowedItemSignatures { spans, kind })
cx.dcx().create_err(errors::PlaceholderNotAllowedItemSignatures { spans, kind })
}

impl<'tcx> ItemCtxt<'tcx> {
Expand Down Expand Up @@ -370,21 +381,24 @@ impl<'tcx> HirTyLowerer<'tcx> for ItemCtxt<'tcx> {
self.tcx
}

fn dcx(&self) -> DiagCtxtHandle<'_> {
self.tcx.dcx().taintable_handle(&self.tainted_by_errors)
}

fn item_def_id(&self) -> LocalDefId {
self.item_def_id
}

fn re_infer(&self, span: Span, reason: RegionInferReason<'_>) -> ty::Region<'tcx> {
if let RegionInferReason::BorrowedObjectLifetimeDefault = reason {
let e = struct_span_code_err!(
self.tcx().dcx(),
self.dcx(),
span,
E0228,
"the lifetime bound for this object type cannot be deduced \
from context; please supply an explicit bound"
)
.emit();
self.set_tainted_by_errors(e);
ty::Region::new_error(self.tcx(), e)
} else {
// This indicates an illegal lifetime in a non-assoc-trait position
Expand Down Expand Up @@ -509,10 +523,6 @@ impl<'tcx> HirTyLowerer<'tcx> for ItemCtxt<'tcx> {
None
}

fn set_tainted_by_errors(&self, err: ErrorGuaranteed) {
self.tainted_by_errors.set(Some(err));
}

fn lower_fn_sig(
&self,
decl: &hir::FnDecl<'tcx>,
Expand Down Expand Up @@ -570,7 +580,7 @@ impl<'tcx> HirTyLowerer<'tcx> for ItemCtxt<'tcx> {
// `ident_span` to not emit an error twice when we have `fn foo(_: fn() -> _)`.

let mut diag = crate::collect::placeholder_type_error_diag(
tcx,
self,
generics,
visitor.0,
infer_replacements.iter().map(|(s, _)| *s).collect(),
Expand All @@ -590,7 +600,7 @@ impl<'tcx> HirTyLowerer<'tcx> for ItemCtxt<'tcx> {
);
}

self.set_tainted_by_errors(diag.emit());
diag.emit();
}

(input_tys, output_ty)
Expand Down Expand Up @@ -639,6 +649,7 @@ fn lower_item(tcx: TyCtxt<'_>, item_id: hir::ItemId) {
let it = tcx.hir().item(item_id);
debug!(item = %it.ident, id = %it.hir_id());
let def_id = item_id.owner_id.def_id;
let icx = ItemCtxt::new(tcx, def_id);

match &it.kind {
// These don't define types.
Expand All @@ -663,7 +674,7 @@ fn lower_item(tcx: TyCtxt<'_>, item_id: hir::ItemId) {
let mut visitor = HirPlaceholderCollector::default();
visitor.visit_foreign_item(item);
placeholder_type_error(
tcx,
icx.lowerer(),
None,
visitor.0,
false,
Expand Down Expand Up @@ -742,7 +753,14 @@ fn lower_item(tcx: TyCtxt<'_>, item_id: hir::ItemId) {
if !ty.is_suggestable_infer_ty() {
let mut visitor = HirPlaceholderCollector::default();
visitor.visit_item(it);
placeholder_type_error(tcx, None, visitor.0, false, None, it.kind.descr());
placeholder_type_error(
icx.lowerer(),
None,
visitor.0,
false,
None,
it.kind.descr(),
);
}
}

Expand All @@ -760,6 +778,7 @@ fn lower_trait_item(tcx: TyCtxt<'_>, trait_item_id: hir::TraitItemId) {
let trait_item = tcx.hir().trait_item(trait_item_id);
let def_id = trait_item_id.owner_id;
tcx.ensure().generics_of(def_id);
let icx = ItemCtxt::new(tcx, def_id.def_id);

match trait_item.kind {
hir::TraitItemKind::Fn(..) => {
Expand All @@ -776,7 +795,14 @@ fn lower_trait_item(tcx: TyCtxt<'_>, trait_item_id: hir::TraitItemId) {
// Account for `const C: _;`.
let mut visitor = HirPlaceholderCollector::default();
visitor.visit_trait_item(trait_item);
placeholder_type_error(tcx, None, visitor.0, false, None, "associated constant");
placeholder_type_error(
icx.lowerer(),
None,
visitor.0,
false,
None,
"associated constant",
);
}
}

Expand All @@ -787,7 +813,7 @@ fn lower_trait_item(tcx: TyCtxt<'_>, trait_item_id: hir::TraitItemId) {
// Account for `type T = _;`.
let mut visitor = HirPlaceholderCollector::default();
visitor.visit_trait_item(trait_item);
placeholder_type_error(tcx, None, visitor.0, false, None, "associated type");
placeholder_type_error(icx.lowerer(), None, visitor.0, false, None, "associated type");
}

hir::TraitItemKind::Type(_, None) => {
Expand All @@ -798,7 +824,7 @@ fn lower_trait_item(tcx: TyCtxt<'_>, trait_item_id: hir::TraitItemId) {
let mut visitor = HirPlaceholderCollector::default();
visitor.visit_trait_item(trait_item);

placeholder_type_error(tcx, None, visitor.0, false, None, "associated type");
placeholder_type_error(icx.lowerer(), None, visitor.0, false, None, "associated type");
}
};

Expand All @@ -811,6 +837,7 @@ fn lower_impl_item(tcx: TyCtxt<'_>, impl_item_id: hir::ImplItemId) {
tcx.ensure().type_of(def_id);
tcx.ensure().predicates_of(def_id);
let impl_item = tcx.hir().impl_item(impl_item_id);
let icx = ItemCtxt::new(tcx, def_id.def_id);
match impl_item.kind {
hir::ImplItemKind::Fn(..) => {
tcx.ensure().codegen_fn_attrs(def_id);
Expand All @@ -821,14 +848,21 @@ fn lower_impl_item(tcx: TyCtxt<'_>, impl_item_id: hir::ImplItemId) {
let mut visitor = HirPlaceholderCollector::default();
visitor.visit_impl_item(impl_item);

placeholder_type_error(tcx, None, visitor.0, false, None, "associated type");
placeholder_type_error(icx.lowerer(), None, visitor.0, false, None, "associated type");
}
hir::ImplItemKind::Const(ty, _) => {
// Account for `const T: _ = ..;`
if !ty.is_suggestable_infer_ty() {
let mut visitor = HirPlaceholderCollector::default();
visitor.visit_impl_item(impl_item);
placeholder_type_error(tcx, None, visitor.0, false, None, "associated constant");
placeholder_type_error(
icx.lowerer(),
None,
visitor.0,
false,
None,
"associated constant",
);
}
}
}
Expand Down Expand Up @@ -1385,7 +1419,7 @@ fn fn_sig(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::EarlyBinder<'_, ty::PolyFn
..
})
| Item(hir::Item { kind: ItemKind::Fn(sig, generics, _), .. }) => {
infer_return_ty_for_fn_sig(tcx, sig, generics, def_id, &icx)
infer_return_ty_for_fn_sig(sig, generics, def_id, &icx)
}

ImplItem(hir::ImplItem { kind: ImplItemKind::Fn(sig, _), generics, .. }) => {
Expand All @@ -1402,7 +1436,7 @@ fn fn_sig(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::EarlyBinder<'_, ty::PolyFn
None,
)
} else {
infer_return_ty_for_fn_sig(tcx, sig, generics, def_id, &icx)
infer_return_ty_for_fn_sig(sig, generics, def_id, &icx)
}
}

Expand Down Expand Up @@ -1455,12 +1489,12 @@ fn fn_sig(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::EarlyBinder<'_, ty::PolyFn
}

fn infer_return_ty_for_fn_sig<'tcx>(
tcx: TyCtxt<'tcx>,
sig: &hir::FnSig<'tcx>,
generics: &hir::Generics<'_>,
def_id: LocalDefId,
icx: &ItemCtxt<'tcx>,
) -> ty::PolyFnSig<'tcx> {
let tcx = icx.tcx;
let hir_id = tcx.local_def_id_to_hir_id(def_id);

match sig.decl.output.get_infer_ret_ty() {
Expand Down Expand Up @@ -1492,7 +1526,7 @@ fn infer_return_ty_for_fn_sig<'tcx>(
let mut visitor = HirPlaceholderCollector::default();
visitor.visit_ty(ty);

let mut diag = bad_placeholder(tcx, visitor.0, "return type");
let mut diag = bad_placeholder(icx.lowerer(), visitor.0, "return type");
let ret_ty = fn_sig.output();
// Don't leak types into signatures unless they're nameable!
// For example, if a function returns itself, we don't want that
Expand Down
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