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Auto merge of #134201 - matthiaskrgr:rollup-22b721y, r=matthiaskrgr

Browse source 
Rollup of 11 pull requests

Successful merges:

 - #122003 (link libunwind dynamically and allow controlling it via `crt-static` on gnullvm targets)
 - #133859 (Move some alloc tests to the alloctests crate)
 - #134070 (Some asm! diagnostic adjustments and a papercut fix)
 - #134144 (Properly consider APITs for never type fallback ascription fix)
 - #134152 (Simplify `rustc_mir_dataflow::abs_domain`.)
 - #134154 (suppress field expr with generics error message if it's a method)
 - #134155 (Forbid `unsafe_op_in_unsafe_fn` for Hurd)
 - #134173 (allow `symbol_intern_string_literal` lint in test modules)
 - #134178 (Stabilize the Rust 2024 prelude)
 - #134179 (Remove outdated consteval note from `<*mut T>::align_offset` docs.)
 - #134187 (Remove `PErr`.)

r? `@ghost`
`@rustbot` modify labels: rollup
This commit is contained in:
bors 2024-12-12 09:21:42 +00:00
commit 4606a4d6fa
49 changed files with 475 additions and 190 deletions
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2
compiler/rustc_ast/src/util/comments/tests.rs
View file

@ -1,3 +1,5 @@
#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
use rustc_span::create_default_session_globals_then;
use super::*;

7
compiler/rustc_errors/src/lib.rs
View file

@ -94,8 +94,7 @@ mod styled_buffer;
mod tests;
pub mod translation;
pub type PErr<'a> = Diag<'a>;
pub type PResult<'a, T> = Result<T, PErr<'a>>;
pub type PResult<'a, T> = Result<T, Diag<'a>>;
rustc_fluent_macro::fluent_messages! { "../messages.ftl" }
@ -576,6 +575,10 @@ pub enum StashKey {
UndeterminedMacroResolution,
/// Used by `Parser::maybe_recover_trailing_expr`
ExprInPat,
/// If in the parser we detect a field expr with turbofish generic params it's possible that
/// it's a method call without parens. If later on in `hir_typeck` we find out that this is
/// the case we suppress this message and we give a better suggestion.
GenericInFieldExpr,
}
fn default_track_diagnostic<R>(diag: DiagInner, f: &mut dyn FnMut(DiagInner) -> R) -> R {

2
compiler/rustc_hir/src/tests.rs
View file

@ -1,3 +1,5 @@
#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
use rustc_data_structures::stable_hasher::Hash64;
use rustc_span::def_id::{DefPathHash, StableCrateId};
use rustc_span::edition::Edition;

118
compiler/rustc_hir_analysis/src/check/intrinsicck.rs
View file

@ -3,6 +3,7 @@ use std::assert_matches::debug_assert_matches;
use rustc_abi::FieldIdx;
use rustc_ast::InlineAsmTemplatePiece;
use rustc_data_structures::fx::FxIndexSet;
use rustc_hir::def_id::DefId;
use rustc_hir::{self as hir, LangItem};
use rustc_middle::bug;
use rustc_middle::ty::{self, FloatTy, IntTy, Ty, TyCtxt, TypeVisitableExt, UintTy};
@ -21,6 +22,12 @@ pub struct InlineAsmCtxt<'a, 'tcx> {
get_operand_ty: Box<dyn Fn(&'tcx hir::Expr<'tcx>) -> Ty<'tcx> + 'a>,
}
enum NonAsmTypeReason<'tcx> {
UnevaluatedSIMDArrayLength(DefId, ty::Const<'tcx>),
Invalid(Ty<'tcx>),
InvalidElement(DefId, Ty<'tcx>),
}
impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> {
pub fn new_global_asm(tcx: TyCtxt<'tcx>) -> Self {
InlineAsmCtxt {
@ -56,7 +63,7 @@ impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> {
false
}
fn get_asm_ty(&self, ty: Ty<'tcx>) -> Option<InlineAsmType> {
fn get_asm_ty(&self, ty: Ty<'tcx>) -> Result<InlineAsmType, NonAsmTypeReason<'tcx>> {
let asm_ty_isize = match self.tcx.sess.target.pointer_width {
16 => InlineAsmType::I16,
32 => InlineAsmType::I32,
@ -65,64 +72,62 @@ impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> {
};
match *ty.kind() {
ty::Int(IntTy::I8) | ty::Uint(UintTy::U8) => Some(InlineAsmType::I8),
ty::Int(IntTy::I16) | ty::Uint(UintTy::U16) => Some(InlineAsmType::I16),
ty::Int(IntTy::I32) | ty::Uint(UintTy::U32) => Some(InlineAsmType::I32),
ty::Int(IntTy::I64) | ty::Uint(UintTy::U64) => Some(InlineAsmType::I64),
ty::Int(IntTy::I128) | ty::Uint(UintTy::U128) => Some(InlineAsmType::I128),
ty::Int(IntTy::Isize) | ty::Uint(UintTy::Usize) => Some(asm_ty_isize),
ty::Float(FloatTy::F16) => Some(InlineAsmType::F16),
ty::Float(FloatTy::F32) => Some(InlineAsmType::F32),
ty::Float(FloatTy::F64) => Some(InlineAsmType::F64),
ty::Float(FloatTy::F128) => Some(InlineAsmType::F128),
ty::FnPtr(..) => Some(asm_ty_isize),
ty::RawPtr(ty, _) if self.is_thin_ptr_ty(ty) => Some(asm_ty_isize),
ty::Int(IntTy::I8) | ty::Uint(UintTy::U8) => Ok(InlineAsmType::I8),
ty::Int(IntTy::I16) | ty::Uint(UintTy::U16) => Ok(InlineAsmType::I16),
ty::Int(IntTy::I32) | ty::Uint(UintTy::U32) => Ok(InlineAsmType::I32),
ty::Int(IntTy::I64) | ty::Uint(UintTy::U64) => Ok(InlineAsmType::I64),
ty::Int(IntTy::I128) | ty::Uint(UintTy::U128) => Ok(InlineAsmType::I128),
ty::Int(IntTy::Isize) | ty::Uint(UintTy::Usize) => Ok(asm_ty_isize),
ty::Float(FloatTy::F16) => Ok(InlineAsmType::F16),
ty::Float(FloatTy::F32) => Ok(InlineAsmType::F32),
ty::Float(FloatTy::F64) => Ok(InlineAsmType::F64),
ty::Float(FloatTy::F128) => Ok(InlineAsmType::F128),
ty::FnPtr(..) => Ok(asm_ty_isize),
ty::RawPtr(ty, _) if self.is_thin_ptr_ty(ty) => Ok(asm_ty_isize),
ty::Adt(adt, args) if adt.repr().simd() => {
let fields = &adt.non_enum_variant().fields;
let elem_ty = fields[FieldIdx::ZERO].ty(self.tcx, args);
let field = &fields[FieldIdx::ZERO];
let elem_ty = field.ty(self.tcx, args);
let (size, ty) = match elem_ty.kind() {
ty::Array(ty, len) => {
let len = self.tcx.normalize_erasing_regions(self.typing_env, *len);
if let Some(len) = len.try_to_target_usize(self.tcx) {
(len, *ty)
} else {
return None;
return Err(NonAsmTypeReason::UnevaluatedSIMDArrayLength(
field.did, len,
));
}
}
_ => (fields.len() as u64, elem_ty),
};
match ty.kind() {
ty::Int(IntTy::I8) | ty::Uint(UintTy::U8) => Some(InlineAsmType::VecI8(size)),
ty::Int(IntTy::I16) | ty::Uint(UintTy::U16) => {
Some(InlineAsmType::VecI16(size))
}
ty::Int(IntTy::I32) | ty::Uint(UintTy::U32) => {
Some(InlineAsmType::VecI32(size))
}
ty::Int(IntTy::I64) | ty::Uint(UintTy::U64) => {
Some(InlineAsmType::VecI64(size))
}
ty::Int(IntTy::I8) | ty::Uint(UintTy::U8) => Ok(InlineAsmType::VecI8(size)),
ty::Int(IntTy::I16) | ty::Uint(UintTy::U16) => Ok(InlineAsmType::VecI16(size)),
ty::Int(IntTy::I32) | ty::Uint(UintTy::U32) => Ok(InlineAsmType::VecI32(size)),
ty::Int(IntTy::I64) | ty::Uint(UintTy::U64) => Ok(InlineAsmType::VecI64(size)),
ty::Int(IntTy::I128) | ty::Uint(UintTy::U128) => {
Some(InlineAsmType::VecI128(size))
Ok(InlineAsmType::VecI128(size))
}
ty::Int(IntTy::Isize) | ty::Uint(UintTy::Usize) => {
Some(match self.tcx.sess.target.pointer_width {
Ok(match self.tcx.sess.target.pointer_width {
16 => InlineAsmType::VecI16(size),
32 => InlineAsmType::VecI32(size),
64 => InlineAsmType::VecI64(size),
width => bug!("unsupported pointer width: {width}"),
})
}
ty::Float(FloatTy::F16) => Some(InlineAsmType::VecF16(size)),
ty::Float(FloatTy::F32) => Some(InlineAsmType::VecF32(size)),
ty::Float(FloatTy::F64) => Some(InlineAsmType::VecF64(size)),
ty::Float(FloatTy::F128) => Some(InlineAsmType::VecF128(size)),
_ => None,
ty::Float(FloatTy::F16) => Ok(InlineAsmType::VecF16(size)),
ty::Float(FloatTy::F32) => Ok(InlineAsmType::VecF32(size)),
ty::Float(FloatTy::F64) => Ok(InlineAsmType::VecF64(size)),
ty::Float(FloatTy::F128) => Ok(InlineAsmType::VecF128(size)),
_ => Err(NonAsmTypeReason::InvalidElement(field.did, ty)),
}
}
ty::Infer(_) => bug!("unexpected infer ty in asm operand"),
_ => None,
_ => Err(NonAsmTypeReason::Invalid(ty)),
}
}
@ -163,17 +168,42 @@ impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> {
}
_ => self.get_asm_ty(ty),
};
let Some(asm_ty) = asm_ty else {
let msg = format!("cannot use value of type `{ty}` for inline assembly");
self.tcx
.dcx()
.struct_span_err(expr.span, msg)
.with_note(
"only integers, floats, SIMD vectors, pointers and function pointers \
can be used as arguments for inline assembly",
)
.emit();
return None;
let asm_ty = match asm_ty {
Ok(asm_ty) => asm_ty,
Err(reason) => {
match reason {
NonAsmTypeReason::UnevaluatedSIMDArrayLength(did, len) => {
let msg = format!("cannot evaluate SIMD vector length `{len}`");
self.tcx
.dcx()
.struct_span_err(self.tcx.def_span(did), msg)
.with_span_note(
expr.span,
"SIMD vector length needs to be known statically for use in `asm!`",
)
.emit();
}
NonAsmTypeReason::Invalid(ty) => {
let msg = format!("cannot use value of type `{ty}` for inline assembly");
self.tcx.dcx().struct_span_err(expr.span, msg).with_note(
"only integers, floats, SIMD vectors, pointers and function pointers \
can be used as arguments for inline assembly",
).emit();
}
NonAsmTypeReason::InvalidElement(did, ty) => {
let msg = format!(
"cannot use SIMD vector with element type `{ty}` for inline assembly"
);
self.tcx.dcx()
.struct_span_err(self.tcx.def_span(did), msg).with_span_note(
expr.span,
"only integers, floats, SIMD vectors, pointers and function pointers \
can be used as arguments for inline assembly",
).emit();
}
}
return None;
}
};
// Check that the type implements Copy. The only case where this can

3
compiler/rustc_hir_typeck/src/expr.rs
View file

@ -3076,7 +3076,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
err.help("methods are immutable and cannot be assigned to");
}
err.emit()
// See `StashKey::GenericInFieldExpr` for more info
self.dcx().try_steal_replace_and_emit_err(field.span, StashKey::GenericInFieldExpr, err)
}
fn point_at_param_definition(&self, err: &mut Diag<'_>, param: ty::ParamTy) {

19
compiler/rustc_hir_typeck/src/fallback.rs
View file

@ -613,19 +613,16 @@ impl<'tcx> AnnotateUnitFallbackVisitor<'_, 'tcx> {
if arg_segment.args.is_none()
&& let Some(all_args) = self.fcx.typeck_results.borrow().node_args_opt(id)
&& let generics = self.fcx.tcx.generics_of(def_id)
&& let args = &all_args[generics.parent_count..]
&& let args = all_args[generics.parent_count..].iter().zip(&generics.own_params)
// We can't turbofish consts :(
&& args.iter().all(|arg| matches!(arg.unpack(), ty::GenericArgKind::Type(_) | ty::GenericArgKind::Lifetime(_)))
&& args.clone().all(|(_, param)| matches!(param.kind, ty::GenericParamDefKind::Type { .. } | ty::GenericParamDefKind::Lifetime))
{
let n_tys = args
.iter()
.filter(|arg| matches!(arg.unpack(), ty::GenericArgKind::Type(_)))
.count();
for (idx, arg) in args
.iter()
.filter(|arg| matches!(arg.unpack(), ty::GenericArgKind::Type(_)))
.enumerate()
{
// We filter out APITs, which are not turbofished.
let non_apit_type_args = args.filter(|(_, param)| {
matches!(param.kind, ty::GenericParamDefKind::Type { synthetic: false, .. })
});
let n_tys = non_apit_type_args.clone().count();
for (idx, (arg, _)) in non_apit_type_args.enumerate() {
if let Some(ty) = arg.as_type()
&& let Some(vid) = self.fcx.root_vid(ty)
&& self.reachable_vids.contains(&vid)

2
compiler/rustc_lint/src/tests.rs
View file

@ -1,3 +1,5 @@
#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
use rustc_span::{Symbol, create_default_session_globals_then};
use crate::levels::parse_lint_and_tool_name;

44
compiler/rustc_mir_dataflow/src/move_paths/abs_domain.rs
View file

@ -4,52 +4,26 @@
//! field-deref on a local variable, `x.field`, has the same meaning
//! in both domains). Indexed projections are the exception: `a[x]`
//! needs to be treated as mapping to the same move path as `a[y]` as
//! well as `a[13]`, etc.
//! well as `a[13]`, etc. So we map these `x`/`y` values to `()`.
//!
//! (In theory, the analysis could be extended to work with sets of
//! paths, so that `a[0]` and `a[13]` could be kept distinct, while
//! `a[x]` would still overlap them both. But that is not this
//! representation does today.)
use rustc_middle::mir::{Local, Operand, PlaceElem, ProjectionElem};
use rustc_middle::ty::Ty;
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
pub(crate) struct AbstractOperand;
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
pub(crate) struct AbstractType;
pub(crate) type AbstractElem = ProjectionElem<AbstractOperand, AbstractType>;
use rustc_middle::mir::{PlaceElem, ProjectionElem, ProjectionKind};
pub(crate) trait Lift {
type Abstract;
fn lift(&self) -> Self::Abstract;
}
impl<'tcx> Lift for Operand<'tcx> {
type Abstract = AbstractOperand;
fn lift(&self) -> Self::Abstract {
AbstractOperand
}
}
impl Lift for Local {
type Abstract = AbstractOperand;
fn lift(&self) -> Self::Abstract {
AbstractOperand
}
}
impl<'tcx> Lift for Ty<'tcx> {
type Abstract = AbstractType;
fn lift(&self) -> Self::Abstract {
AbstractType
}
fn lift(&self) -> ProjectionKind;
}
impl<'tcx> Lift for PlaceElem<'tcx> {
type Abstract = AbstractElem;
fn lift(&self) -> Self::Abstract {
fn lift(&self) -> ProjectionKind {
match *self {
ProjectionElem::Deref => ProjectionElem::Deref,
ProjectionElem::Field(f, ty) => ProjectionElem::Field(f, ty.lift()),
ProjectionElem::OpaqueCast(ty) => ProjectionElem::OpaqueCast(ty.lift()),
ProjectionElem::Index(ref i) => ProjectionElem::Index(i.lift()),
ProjectionElem::Field(f, _ty) => ProjectionElem::Field(f, ()),
ProjectionElem::OpaqueCast(_ty) => ProjectionElem::OpaqueCast(()),
ProjectionElem::Index(_i) => ProjectionElem::Index(()),
ProjectionElem::Subslice { from, to, from_end } => {
ProjectionElem::Subslice { from, to, from_end }
}
@ -57,7 +31,7 @@ impl<'tcx> Lift for PlaceElem<'tcx> {
ProjectionElem::ConstantIndex { offset, min_length, from_end }
}
ProjectionElem::Downcast(a, u) => ProjectionElem::Downcast(a, u),
ProjectionElem::Subtype(ty) => ProjectionElem::Subtype(ty.lift()),
ProjectionElem::Subtype(_ty) => ProjectionElem::Subtype(()),
}
}
}

4
compiler/rustc_mir_dataflow/src/move_paths/mod.rs
View file

@ -8,7 +8,7 @@ use rustc_middle::ty::{Ty, TyCtxt};
use rustc_span::Span;
use smallvec::SmallVec;
use self::abs_domain::{AbstractElem, Lift};
use self::abs_domain::Lift;
use crate::un_derefer::UnDerefer;
mod abs_domain;
@ -300,7 +300,7 @@ pub struct MovePathLookup<'tcx> {
/// subsequent search so that it is solely relative to that
/// base-place). For the remaining lookup, we map the projection
/// elem to the associated MovePathIndex.
projections: FxHashMap<(MovePathIndex, AbstractElem), MovePathIndex>,
projections: FxHashMap<(MovePathIndex, ProjectionKind), MovePathIndex>,
un_derefer: UnDerefer<'tcx>,
}

14
compiler/rustc_parse/src/lexer/tokentrees.rs
View file

@ -1,7 +1,7 @@
use rustc_ast::token::{self, Delimiter, Token};
use rustc_ast::tokenstream::{DelimSpacing, DelimSpan, Spacing, TokenStream, TokenTree};
use rustc_ast_pretty::pprust::token_to_string;
use rustc_errors::{Applicability, PErr};
use rustc_errors::{Applicability, Diag};
use rustc_span::symbol::kw;
use super::diagnostics::{report_suspicious_mismatch_block, same_indentation_level};
@ -14,7 +14,7 @@ impl<'psess, 'src> Lexer<'psess, 'src> {
pub(super) fn lex_token_trees(
&mut self,
is_delimited: bool,
) -> (Spacing, TokenStream, Result<(), Vec<PErr<'psess>>>) {
) -> (Spacing, TokenStream, Result<(), Vec<Diag<'psess>>>) {
// Move past the opening delimiter.
let open_spacing = self.bump_minimal();
@ -56,7 +56,7 @@ impl<'psess, 'src> Lexer<'psess, 'src> {
}
}
fn eof_err(&mut self) -> PErr<'psess> {
fn eof_err(&mut self) -> Diag<'psess> {
let msg = "this file contains an unclosed delimiter";
let mut err = self.dcx().struct_span_err(self.token.span, msg);
@ -98,7 +98,7 @@ impl<'psess, 'src> Lexer<'psess, 'src> {
fn lex_token_tree_open_delim(
&mut self,
open_delim: Delimiter,
) -> Result<TokenTree, Vec<PErr<'psess>>> {
) -> Result<TokenTree, Vec<Diag<'psess>>> {
// The span for beginning of the delimited section.
let pre_span = self.token.span;
@ -250,8 +250,8 @@ impl<'psess, 'src> Lexer<'psess, 'src> {
fn unclosed_delim_err(
&mut self,
tts: TokenStream,
mut errs: Vec<PErr<'psess>>,
) -> Vec<PErr<'psess>> {
mut errs: Vec<Diag<'psess>>,
) -> Vec<Diag<'psess>> {
// If there are unclosed delims, see if there are diff markers and if so, point them
// out instead of complaining about the unclosed delims.
let mut parser = Parser::new(self.psess, tts, None);
@ -308,7 +308,7 @@ impl<'psess, 'src> Lexer<'psess, 'src> {
errs
}
fn close_delim_err(&mut self, delim: Delimiter) -> PErr<'psess> {
fn close_delim_err(&mut self, delim: Delimiter) -> Diag<'psess> {
// An unexpected closing delimiter (i.e., there is no matching opening delimiter).
let token_str = token_to_string(&self.token);
let msg = format!("unexpected closing delimiter: `{token_str}`");

6
compiler/rustc_parse/src/parser/diagnostics.rs
View file

@ -16,7 +16,7 @@ use rustc_ast_pretty::pprust;
use rustc_data_structures::fx::FxHashSet;
use rustc_data_structures::sync::Lrc;
use rustc_errors::{
Applicability, Diag, DiagCtxtHandle, ErrorGuaranteed, FatalError, PErr, PResult, Subdiagnostic,
Applicability, Diag, DiagCtxtHandle, ErrorGuaranteed, FatalError, PResult, Subdiagnostic,
Suggestions, pluralize,
};
use rustc_session::errors::ExprParenthesesNeeded;
@ -2132,7 +2132,7 @@ impl<'a> Parser<'a> {
&mut self,
delim: Delimiter,
lo: Span,
err: PErr<'a>,
err: Diag<'a>,
) -> P<Expr> {
let guar = err.emit();
// Recover from parse error, callers expect the closing delim to be consumed.
@ -3014,7 +3014,7 @@ impl<'a> Parser<'a> {
}
/// Check for exclusive ranges written as `..<`
pub(crate) fn maybe_err_dotdotlt_syntax(&self, maybe_lt: Token, mut err: PErr<'a>) -> PErr<'a> {
pub(crate) fn maybe_err_dotdotlt_syntax(&self, maybe_lt: Token, mut err: Diag<'a>) -> Diag<'a> {
if maybe_lt == token::Lt
&& (self.expected_tokens.contains(&TokenType::Token(token::Gt))
|| matches!(self.token.kind, token::Literal(..)))

7
compiler/rustc_parse/src/parser/expr.rs
View file

@ -1369,11 +1369,14 @@ impl<'a> Parser<'a> {
))
} else {
// Field access `expr.f`
let span = lo.to(self.prev_token.span);
if let Some(args) = seg.args {
self.dcx().emit_err(errors::FieldExpressionWithGeneric(args.span()));
// See `StashKey::GenericInFieldExpr` for more info on why we stash this.
self.dcx()
.create_err(errors::FieldExpressionWithGeneric(args.span()))
.stash(seg.ident.span, StashKey::GenericInFieldExpr);
}
let span = lo.to(self.prev_token.span);
Ok(self.mk_expr(span, ExprKind::Field(self_arg, seg.ident)))
}
}

2
compiler/rustc_parse/src/parser/tests.rs
View file

@ -1,3 +1,5 @@
#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
use std::assert_matches::assert_matches;
use std::io::prelude::*;
use std::iter::Peekable;

2
compiler/rustc_parse/src/parser/tokenstream/tests.rs
View file

@ -1,3 +1,5 @@
#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
use rustc_ast::token::{self, IdentIsRaw};
use rustc_ast::tokenstream::{TokenStream, TokenTree};
use rustc_span::{BytePos, Span, Symbol, create_default_session_globals_then};

2
compiler/rustc_span/src/edit_distance/tests.rs
View file

@ -1,3 +1,5 @@
#![cfg_attr(not(bootstrap), allow(rustc::symbol_intern_string_literal))]
use super::*;
#[test]

2
compiler/rustc_target/src/spec/base/windows_gnullvm.rs
View file

@ -42,6 +42,8 @@ pub(crate) fn opts() -> TargetOptions {
eh_frame_header: false,
no_default_libraries: false,
has_thread_local: true,
crt_static_allows_dylibs: true,
crt_static_respected: true,
// FIXME(davidtwco): Support Split DWARF on Windows GNU - may require LLVM changes to
// output DWO, despite using DWARF, doesn't use ELF..
debuginfo_kind: DebuginfoKind::Pdb,

3
library/alloc/src/alloc.rs
View file

@ -10,9 +10,6 @@ use core::hint;
#[cfg(not(test))]
use core::ptr::{self, NonNull};
#[cfg(test)]
mod tests;
extern "Rust" {
// These are the magic symbols to call the global allocator. rustc generates
// them to call `__rg_alloc` etc. if there is a `#[global_allocator]` attribute

3
library/alloc/src/collections/binary_heap/mod.rs
View file

@ -155,9 +155,6 @@ use crate::collections::TryReserveError;
use crate::slice;
use crate::vec::{self, AsVecIntoIter, Vec};
#[cfg(test)]
mod tests;
/// A priority queue implemented with a binary heap.
///
/// This will be a max-heap.

3
library/alloc/src/ffi/c_str.rs
View file

@ -1,8 +1,5 @@
//! [`CString`] and its related types.
#[cfg(test)]
mod tests;
use core::borrow::Borrow;
use core::ffi::{CStr, c_char};
use core::num::NonZero;

2
library/alloc/src/lib.rs
View file

@ -239,8 +239,6 @@ pub mod string;
pub mod sync;
#[cfg(all(not(no_global_oom_handling), not(no_rc), not(no_sync)))]
pub mod task;
#[cfg(test)]
mod tests;
pub mod vec;
#[doc(hidden)]

3
library/alloc/src/sync.rs
View file

@ -39,9 +39,6 @@ use crate::string::String;
#[cfg(not(no_global_oom_handling))]
use crate::vec::Vec;
#[cfg(test)]
mod tests;
/// A soft limit on the amount of references that may be made to an `Arc`.
///
/// Going above this limit will abort your program (although not

5
library/alloc/src/alloc/tests.rs → library/alloc/tests/alloc.rs
View file

@ -1,10 +1,9 @@
use super::*;
use alloc::alloc::*;
use alloc::boxed::Box;
extern crate test;
use test::Bencher;
use crate::boxed::Box;
#[test]
fn allocate_zeroed() {
unsafe {

7
library/alloc/src/ffi/c_str/tests.rs → library/alloc/tests/c_str2.rs
View file

@ -1,11 +1,12 @@
use alloc::ffi::CString;
use alloc::rc::Rc;
use alloc::sync::Arc;
use core::assert_matches::assert_matches;
use core::ffi::FromBytesUntilNulError;
use core::ffi::{CStr, FromBytesUntilNulError, c_char};
#[allow(deprecated)]
use core::hash::SipHasher13 as DefaultHasher;
use core::hash::{Hash, Hasher};
use super::*;
#[test]
fn c_to_rust() {
let data = b"123\0";

8
library/alloc/src/collections/binary_heap/tests.rs → library/alloc/tests/collections/binary_heap.rs
View file

@ -1,7 +1,9 @@
use alloc::boxed::Box;
use alloc::collections::binary_heap::*;
use std::iter::TrustedLen;
use std::mem;
use std::panic::{AssertUnwindSafe, catch_unwind};
use super::*;
use crate::boxed::Box;
use crate::testing::crash_test::{CrashTestDummy, Panic};
#[test]
@ -531,7 +533,7 @@ fn panic_safe() {
self.0.partial_cmp(&other.0)
}
}
let mut rng = crate::test_helpers::test_rng();
let mut rng = crate::test_rng();
const DATASZ: usize = 32;
// Miri is too slow
let ntest = if cfg!(miri) { 1 } else { 10 };

1
library/alloc/tests/collections/mod.rs Normal file
View file

@ -0,0 +1 @@
mod binary_heap;

24
library/alloc/tests/lib.rs
View file

@ -5,8 +5,10 @@
#![feature(btree_extract_if)]
#![feature(cow_is_borrowed)]
#![feature(core_intrinsics)]
#![feature(downcast_unchecked)]
#![feature(extract_if)]
#![feature(exact_size_is_empty)]
#![feature(hashmap_internals)]
#![feature(linked_list_cursors)]
#![feature(map_try_insert)]
#![feature(pattern)]
@ -29,9 +31,11 @@
#![feature(const_str_from_utf8)]
#![feature(panic_update_hook)]
#![feature(pointer_is_aligned_to)]
#![feature(test)]
#![feature(thin_box)]
#![feature(drain_keep_rest)]
#![feature(local_waker)]
#![feature(str_as_str)]
#![feature(strict_provenance_lints)]
#![feature(vec_pop_if)]
#![feature(unique_rc_arc)]
@ -40,25 +44,33 @@
#![deny(fuzzy_provenance_casts)]
#![deny(unsafe_op_in_unsafe_fn)]
extern crate test;
use std::hash::{DefaultHasher, Hash, Hasher};
mod alloc;
mod arc;
mod autotraits;
mod borrow;
mod boxed;
mod btree_set_hash;
mod c_str;
mod c_str2;
mod collections;
mod const_fns;
mod cow_str;
mod fmt;
mod heap;
mod linked_list;
mod misc_tests;
mod rc;
mod slice;
mod sort;
mod str;
mod string;
mod sync;
mod task;
mod testing;
mod thin_box;
mod vec;
mod vec_deque;
@ -69,6 +81,18 @@ fn hash<T: Hash>(t: &T) -> u64 {
s.finish()
}
/// Copied from `std::test_helpers::test_rng`, since these tests rely on the
/// seed not being the same for every RNG invocation too.
fn test_rng() -> rand_xorshift::XorShiftRng {
use std::hash::{BuildHasher, Hash, Hasher};
let mut hasher = std::hash::RandomState::new().build_hasher();
std::panic::Location::caller().hash(&mut hasher);
let hc64 = hasher.finish();
let seed_vec = hc64.to_le_bytes().into_iter().chain(0u8..8).collect::<Vec<u8>>();
let seed: [u8; 16] = seed_vec.as_slice().try_into().unwrap();
rand::SeedableRng::from_seed(seed)
}
// FIXME: Instantiated functions with i128 in the signature is not supported in Emscripten.
// See https://github.com/kripken/emscripten-fastcomp/issues/169
#[cfg(not(target_os = "emscripten"))]

0
library/alloc/src/tests.rs → library/alloc/tests/misc_tests.rs
View file

10
library/alloc/src/sync/tests.rs → library/alloc/tests/sync.rs
View file

@ -1,14 +1,16 @@
use alloc::sync::*;
use std::alloc::{AllocError, Allocator, Layout};
use std::any::Any;
use std::clone::Clone;
use std::mem::MaybeUninit;
use std::option::Option::None;
use std::ptr::NonNull;
use std::sync::Mutex;
use std::sync::atomic::AtomicUsize;
use std::sync::atomic::Ordering::SeqCst;
use std::sync::atomic::Ordering::*;
use std::sync::atomic::{self, AtomicUsize};
use std::sync::mpsc::channel;
use std::thread;
use super::*;
struct Canary(*mut AtomicUsize);
impl Drop for Canary {

80
library/alloc/tests/testing/crash_test.rs Normal file
View file

@ -0,0 +1,80 @@
use std::cmp::Ordering;
use std::fmt::Debug;
use std::sync::atomic::AtomicUsize;
use std::sync::atomic::Ordering::SeqCst;
/// A blueprint for crash test dummy instances that monitor drops.
/// Some instances may be configured to panic at some point.
///
/// Crash test dummies are identified and ordered by an id, so they can be used
/// as keys in a BTreeMap.
#[derive(Debug)]
pub struct CrashTestDummy {
pub id: usize,
dropped: AtomicUsize,
}
impl CrashTestDummy {
/// Creates a crash test dummy design. The `id` determines order and equality of instances.
pub fn new(id: usize) -> CrashTestDummy {
CrashTestDummy { id, dropped: AtomicUsize::new(0) }
}
/// Creates an instance of a crash test dummy that records what events it experiences
/// and optionally panics.
pub fn spawn(&self, panic: Panic) -> Instance<'_> {
Instance { origin: self, panic }
}
/// Returns how many times instances of the dummy have been dropped.
pub fn dropped(&self) -> usize {
self.dropped.load(SeqCst)
}
}
#[derive(Debug)]
pub struct Instance<'a> {
origin: &'a CrashTestDummy,
panic: Panic,
}
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum Panic {
Never,
InDrop,
}
impl Instance<'_> {
pub fn id(&self) -> usize {
self.origin.id
}
}
impl Drop for Instance<'_> {
fn drop(&mut self) {
self.origin.dropped.fetch_add(1, SeqCst);
if self.panic == Panic::InDrop {
panic!("panic in `drop`");
}
}
}
impl PartialOrd for Instance<'_> {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
self.id().partial_cmp(&other.id())
}
}
impl Ord for Instance<'_> {
fn cmp(&self, other: &Self) -> Ordering {
self.id().cmp(&other.id())
}
}
impl PartialEq for Instance<'_> {
fn eq(&self, other: &Self) -> bool {
self.id().eq(&other.id())
}
}
impl Eq for Instance<'_> {}

1
library/alloc/tests/testing/mod.rs Normal file
View file

@ -0,0 +1 @@
pub mod crash_test;

4
library/core/src/prelude/mod.rs
View file

@ -71,7 +71,7 @@ pub mod rust_2021 {
/// The 2024 version of the core prelude.
///
/// See the [module-level documentation](self) for more.
#[unstable(feature = "prelude_2024", issue = "121042")]
#[stable(feature = "prelude_2024", since = "CURRENT_RUSTC_VERSION")]
pub mod rust_2024 {
#[stable(feature = "rust1", since = "1.0.0")]
pub use super::common::*;
@ -84,7 +84,7 @@ pub mod rust_2024 {
#[doc(no_inline)]
pub use crate::convert::{TryFrom, TryInto};
#[unstable(feature = "prelude_2024", issue = "121042")]
#[stable(feature = "prelude_2024", since = "CURRENT_RUSTC_VERSION")]
#[doc(no_inline)]
pub use crate::future::{Future, IntoFuture};
}

9
library/core/src/ptr/mut_ptr.rs
View file

@ -1587,15 +1587,6 @@ impl<T: ?Sized> *mut T {
/// beyond the allocation that the pointer points into. It is up to the caller to ensure that
/// the returned offset is correct in all terms other than alignment.
///
/// When this is called during compile-time evaluation (which is unstable), the implementation
/// may return `usize::MAX` in cases where that can never happen at runtime. This is because the
/// actual alignment of pointers is not known yet during compile-time, so an offset with
/// guaranteed alignment can sometimes not be computed. For example, a buffer declared as `[u8;
/// N]` might be allocated at an odd or an even address, but at compile-time this is not yet
/// known, so the execution has to be correct for either choice. It is therefore impossible to
/// find an offset that is guaranteed to be 2-aligned. (This behavior is subject to change, as usual
/// for unstable APIs.)
///
/// # Panics
///
/// The function panics if `align` is not a power-of-two.

1
library/std/src/lib.rs
View file

@ -348,7 +348,6 @@
#![feature(pin_coerce_unsized_trait)]
#![feature(pointer_is_aligned_to)]
#![feature(portable_simd)]
#![feature(prelude_2024)]
#![feature(ptr_as_uninit)]
#![feature(ptr_mask)]
#![feature(random)]

1
library/std/src/os/hurd/mod.rs
View file

@ -1,6 +1,7 @@
//! Hurd-specific definitions
#![stable(feature = "raw_ext", since = "1.1.0")]
#![forbid(unsafe_op_in_unsafe_fn)]
pub mod fs;
pub mod raw;

16
library/std/src/prelude/mod.rs
View file

@ -25,6 +25,7 @@
//!
//! # Prelude contents
//!
//! The items included in the prelude depend on the edition of the crate.
//! The first version of the prelude is used in Rust 2015 and Rust 2018,
//! and lives in [`std::prelude::v1`].
//! [`std::prelude::rust_2015`] and [`std::prelude::rust_2018`] re-export this prelude.
@ -67,15 +68,21 @@
//! The prelude used in Rust 2021, [`std::prelude::rust_2021`], includes all of the above,
//! and in addition re-exports:
//!
//! * <code>[std::convert]::{[TryFrom], [TryInto]}</code>,
//! * <code>[std::convert]::{[TryFrom], [TryInto]}</code>.
//! * <code>[std::iter]::[FromIterator]</code>.
//!
//! The prelude used in Rust 2024, [`std::prelude::rust_2024`], includes all of the above,
//! and in addition re-exports:
//!
//! * <code>[std::future]::{[Future], [IntoFuture]}</code>.
//!
//! [std::borrow]: crate::borrow
//! [std::boxed]: crate::boxed
//! [std::clone]: crate::clone
//! [std::cmp]: crate::cmp
//! [std::convert]: crate::convert
//! [std::default]: crate::default
//! [std::future]: crate::future
//! [std::iter]: crate::iter
//! [std::marker]: crate::marker
//! [std::mem]: crate::mem
@ -85,6 +92,7 @@
//! [`std::prelude::rust_2015`]: rust_2015
//! [`std::prelude::rust_2018`]: rust_2018
//! [`std::prelude::rust_2021`]: rust_2021
//! [`std::prelude::rust_2024`]: rust_2024
//! [std::result]: crate::result
//! [std::slice]: crate::slice
//! [std::string]: crate::string
@ -94,6 +102,8 @@
//! [book-dtor]: ../../book/ch15-03-drop.html
//! [book-enums]: ../../book/ch06-01-defining-an-enum.html
//! [book-iter]: ../../book/ch13-02-iterators.html
//! [Future]: crate::future::Future
//! [IntoFuture]: crate::future::IntoFuture
// No formatting: this file is nothing but re-exports, and their order is worth preserving.
#![cfg_attr(rustfmt, rustfmt::skip)]
@ -158,12 +168,12 @@ pub mod rust_2021 {
/// The 2024 version of the prelude of The Rust Standard Library.
///
/// See the [module-level documentation](self) for more.
#[unstable(feature = "prelude_2024", issue = "121042")]
#[stable(feature = "prelude_2024", since = "CURRENT_RUSTC_VERSION")]
pub mod rust_2024 {
#[stable(feature = "rust1", since = "1.0.0")]
pub use super::common::*;
#[unstable(feature = "prelude_2024", issue = "121042")]
#[stable(feature = "prelude_2024", since = "CURRENT_RUSTC_VERSION")]
#[doc(no_inline)]
pub use core::prelude::rust_2024::*;
}

5
library/unwind/src/lib.rs
View file

@ -178,3 +178,8 @@ cfg_if::cfg_if! {
#[cfg(target_os = "hurd")]
#[link(name = "gcc_s")]
extern "C" {}
#[cfg(all(target_os = "windows", target_env = "gnu", target_abi = "llvm"))]
#[link(name = "unwind", kind = "static", modifiers = "-bundle", cfg(target_feature = "crt-static"))]
#[link(name = "unwind", cfg(not(target_feature = "crt-static")))]
extern "C" {}

9
library/unwind/src/libunwind.rs
View file

@ -102,12 +102,9 @@ pub type _Unwind_Exception_Cleanup_Fn =
// rustc_codegen_ssa::src::back::symbol_export, rustc_middle::middle::exported_symbols
// and RFC 2841
#[cfg_attr(
any(
all(
feature = "llvm-libunwind",
any(target_os = "fuchsia", target_os = "linux", target_os = "xous")
),
all(target_os = "windows", target_env = "gnu", target_abi = "llvm")
all(
feature = "llvm-libunwind",
any(target_os = "fuchsia", target_os = "linux", target_os = "xous")
),
link(name = "unwind", kind = "static", modifiers = "-bundle")
)]

7
src/bootstrap/src/core/builder/cargo.rs
View file

@ -1035,12 +1035,7 @@ impl Builder<'_> {
rustflags.arg("-Wrustc::internal");
// cfg(bootstrap) - remove this check when lint is in bootstrap compiler
if stage != 0 {
// Lint is allow by default so downstream tools don't get a lit
// they can do nothing about
// We shouldn't be preinterning symbols used by tests
if cmd_kind != Kind::Test {
rustflags.arg("-Drustc::symbol_intern_string_literal");
}
rustflags.arg("-Drustc::symbol_intern_string_literal");
}
// FIXME(edition_2024): Change this to `-Wrust_2024_idioms` when all
// of the individual lints are satisfied.

21
tests/ui/asm/generic_const_simd_vec_len.rs Normal file
View file

@ -0,0 +1,21 @@
//! This is a regression test to ensure that we emit a diagnostic pointing to the
//! reason the type was rejected in inline assembly.
//@ only-x86_64
#![feature(repr_simd)]
#[repr(simd)]
#[derive(Copy, Clone)]
pub struct Foo<const C: usize>([u8; C]);
//~^ ERROR: cannot evaluate SIMD vector length
pub unsafe fn foo<const C: usize>(a: Foo<C>) {
std::arch::asm!(
"movaps {src}, {src}",
src = in(xmm_reg) a,
//~^ NOTE: SIMD vector length needs to be known statically
);
}
fn main() {}

14
tests/ui/asm/generic_const_simd_vec_len.stderr Normal file
View file

@ -0,0 +1,14 @@
error: cannot evaluate SIMD vector length `C`
--> $DIR/generic_const_simd_vec_len.rs:10:32
|
LL | pub struct Foo<const C: usize>([u8; C]);
| ^^^^^^^
|
note: SIMD vector length needs to be known statically for use in `asm!`
--> $DIR/generic_const_simd_vec_len.rs:16:27
|
LL | src = in(xmm_reg) a,
| ^
error: aborting due to 1 previous error

22
tests/ui/asm/named_const_simd_vec_len.rs Normal file
View file

@ -0,0 +1,22 @@
//! This is a regression test to ensure that we evaluate
//! SIMD vector length constants instead of assuming they are literals.
//@ only-x86_64
//@ check-pass
#![feature(repr_simd)]
const C: usize = 16;
#[repr(simd)]
#[derive(Copy, Clone)]
pub struct Foo([u8; C]);
pub unsafe fn foo(a: Foo) {
std::arch::asm!(
"movaps {src}, {src}",
src = in(xmm_reg) a,
);
}
fn main() {}

28
tests/ui/editions/never-type-fallback-breaking.e2021.fixed
View file

@ -11,6 +11,8 @@ fn main() {
m();
q();
let _ = meow();
let _ = fallback_return();
let _ = fully_apit();
}
fn m() {
@ -49,3 +51,29 @@ fn meow() -> Result<(), ()> {
//[e2024]~^ error: the trait bound `(): From<!>` is not satisfied
Ok(())
}
pub fn takes_apit<T>(_y: impl Fn() -> T) -> Result<T, ()> {
Err(())
}
pub fn fallback_return() -> Result<(), ()> {
//[e2021]~^ this function depends on never type fallback being `()`
//[e2021]~| this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
takes_apit::<()>(|| Default::default())?;
//[e2024]~^ error: the trait bound `!: Default` is not satisfied
Ok(())
}
fn mk<T>() -> Result<T, ()> {
Err(())
}
fn takes_apit2(_x: impl Default) {}
fn fully_apit() -> Result<(), ()> {
//[e2021]~^ this function depends on never type fallback being `()`
//[e2021]~| this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
takes_apit2(mk::<()>()?);
//[e2024]~^ error: the trait bound `!: Default` is not satisfied
Ok(())
}

52
tests/ui/editions/never-type-fallback-breaking.e2021.stderr
View file

@ -1,5 +1,5 @@
warning: this function depends on never type fallback being `()`
--> $DIR/never-type-fallback-breaking.rs:16:1
--> $DIR/never-type-fallback-breaking.rs:18:1
|
LL | fn m() {
| ^^^^^^
@ -8,7 +8,7 @@ LL | fn m() {
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
= help: specify the types explicitly
note: in edition 2024, the requirement `!: Default` will fail
--> $DIR/never-type-fallback-breaking.rs:20:17
--> $DIR/never-type-fallback-breaking.rs:22:17
|
LL | true => Default::default(),
| ^^^^^^^^^^^^^^^^^^
@ -19,7 +19,7 @@ LL | let x: () = match true {
| ++++
warning: this function depends on never type fallback being `()`
--> $DIR/never-type-fallback-breaking.rs:28:1
--> $DIR/never-type-fallback-breaking.rs:30:1
|
LL | fn q() -> Option<()> {
| ^^^^^^^^^^^^^^^^^^^^
@ -28,7 +28,7 @@ LL | fn q() -> Option<()> {
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
= help: specify the types explicitly
note: in edition 2024, the requirement `!: Default` will fail
--> $DIR/never-type-fallback-breaking.rs:35:5
--> $DIR/never-type-fallback-breaking.rs:37:5
|
LL | deserialize()?;
| ^^^^^^^^^^^^^
@ -38,7 +38,7 @@ LL | deserialize::<()>()?;
| ++++++
warning: this function depends on never type fallback being `()`
--> $DIR/never-type-fallback-breaking.rs:45:1
--> $DIR/never-type-fallback-breaking.rs:47:1
|
LL | fn meow() -> Result<(), ()> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -47,7 +47,7 @@ LL | fn meow() -> Result<(), ()> {
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
= help: specify the types explicitly
note: in edition 2024, the requirement `(): From<!>` will fail
--> $DIR/never-type-fallback-breaking.rs:48:5
--> $DIR/never-type-fallback-breaking.rs:50:5
|
LL | help(1)?;
| ^^^^^^^
@ -56,5 +56,43 @@ help: use `()` annotations to avoid fallback changes
LL | help::<(), _>(1)?;
| +++++++++
warning: 3 warnings emitted
warning: this function depends on never type fallback being `()`
--> $DIR/never-type-fallback-breaking.rs:59:1
|
LL | pub fn fallback_return() -> Result<(), ()> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
= help: specify the types explicitly
note: in edition 2024, the requirement `!: Default` will fail
--> $DIR/never-type-fallback-breaking.rs:62:19
|
LL | takes_apit(|| Default::default())?;
| ^^^^^^^^^^^^^^^^^^
help: use `()` annotations to avoid fallback changes
|
LL | takes_apit::<()>(|| Default::default())?;
| ++++++
warning: this function depends on never type fallback being `()`
--> $DIR/never-type-fallback-breaking.rs:73:1
|
LL | fn fully_apit() -> Result<(), ()> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
= help: specify the types explicitly
note: in edition 2024, the requirement `!: Default` will fail
--> $DIR/never-type-fallback-breaking.rs:76:17
|
LL | takes_apit2(mk()?);
| ^^^^^
help: use `()` annotations to avoid fallback changes
|
LL | takes_apit2(mk::<()>()?);
| ++++++
warning: 5 warnings emitted

37
tests/ui/editions/never-type-fallback-breaking.e2024.stderr
View file

@ -1,5 +1,5 @@
error[E0277]: the trait bound `!: Default` is not satisfied
--> $DIR/never-type-fallback-breaking.rs:20:17
--> $DIR/never-type-fallback-breaking.rs:22:17
|
LL | true => Default::default(),
| ^^^^^^^^^^^^^^^^^^ the trait `Default` is not implemented for `!`
@ -8,7 +8,7 @@ LL | true => Default::default(),
= help: did you intend to use the type `()` here instead?
error[E0277]: the trait bound `!: Default` is not satisfied
--> $DIR/never-type-fallback-breaking.rs:35:5
--> $DIR/never-type-fallback-breaking.rs:37:5
|
LL | deserialize()?;
| ^^^^^^^^^^^^^ the trait `Default` is not implemented for `!`
@ -16,13 +16,13 @@ LL | deserialize()?;
= note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
= help: did you intend to use the type `()` here instead?
note: required by a bound in `deserialize`
--> $DIR/never-type-fallback-breaking.rs:31:23
--> $DIR/never-type-fallback-breaking.rs:33:23
|
LL | fn deserialize<T: Default>() -> Option<T> {
| ^^^^^^^ required by this bound in `deserialize`
error[E0277]: the trait bound `(): From<!>` is not satisfied
--> $DIR/never-type-fallback-breaking.rs:48:5
--> $DIR/never-type-fallback-breaking.rs:50:5
|
LL | help(1)?;
| ^^^^^^^ the trait `From<!>` is not implemented for `()`
@ -39,11 +39,36 @@ LL | help(1)?;
and 4 others
= note: required for `!` to implement `Into<()>`
note: required by a bound in `help`
--> $DIR/never-type-fallback-breaking.rs:42:20
--> $DIR/never-type-fallback-breaking.rs:44:20
|
LL | fn help<'a: 'a, T: Into<()>, U>(_: U) -> Result<T, ()> {
| ^^^^^^^^ required by this bound in `help`
error: aborting due to 3 previous errors
error[E0277]: the trait bound `!: Default` is not satisfied
--> $DIR/never-type-fallback-breaking.rs:62:19
|
LL | takes_apit(|| Default::default())?;
| ^^^^^^^^^^^^^^^^^^ the trait `Default` is not implemented for `!`
|
= note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
= help: did you intend to use the type `()` here instead?
error[E0277]: the trait bound `!: Default` is not satisfied
--> $DIR/never-type-fallback-breaking.rs:76:17
|
LL | takes_apit2(mk()?);
| ----------- ^^^^^ the trait `Default` is not implemented for `!`
| |
| required by a bound introduced by this call
|
= note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
= help: did you intend to use the type `()` here instead?
note: required by a bound in `takes_apit2`
--> $DIR/never-type-fallback-breaking.rs:71:25
|
LL | fn takes_apit2(_x: impl Default) {}
| ^^^^^^^ required by this bound in `takes_apit2`
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0277`.

28
tests/ui/editions/never-type-fallback-breaking.rs
View file

@ -11,6 +11,8 @@ fn main() {
m();
q();
let _ = meow();
let _ = fallback_return();
let _ = fully_apit();
}
fn m() {
@ -49,3 +51,29 @@ fn meow() -> Result<(), ()> {
//[e2024]~^ error: the trait bound `(): From<!>` is not satisfied
Ok(())
}
pub fn takes_apit<T>(_y: impl Fn() -> T) -> Result<T, ()> {
Err(())
}
pub fn fallback_return() -> Result<(), ()> {
//[e2021]~^ this function depends on never type fallback being `()`
//[e2021]~| this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
takes_apit(|| Default::default())?;
//[e2024]~^ error: the trait bound `!: Default` is not satisfied
Ok(())
}
fn mk<T>() -> Result<T, ()> {
Err(())
}
fn takes_apit2(_x: impl Default) {}
fn fully_apit() -> Result<(), ()> {
//[e2021]~^ this function depends on never type fallback being `()`
//[e2021]~| this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
takes_apit2(mk()?);
//[e2024]~^ error: the trait bound `!: Default` is not satisfied
Ok(())
}

4
tests/ui/never_type/fallback-closure-ret.nofallback.stderr
View file

@ -15,8 +15,8 @@ LL | foo(|| panic!());
= note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
help: use `()` annotations to avoid fallback changes
|
LL | foo::<(), _>(|| panic!());
| +++++++++
LL | foo::<()>(|| panic!());
| ++++++
warning: 1 warning emitted

12
tests/ui/parser/bad-name.stderr
View file

@ -1,9 +1,3 @@
error: field expressions cannot have generic arguments
--> $DIR/bad-name.rs:2:12
|
LL | let x.y::<isize>.z foo;
| ^^^^^^^
error: expected a pattern, found an expression
--> $DIR/bad-name.rs:2:7
|
@ -18,5 +12,11 @@ error: expected one of `(`, `.`, `::`, `:`, `;`, `=`, `?`, `|`, or an operator,
LL | let x.y::<isize>.z foo;
| ^^^ expected one of 9 possible tokens
error: field expressions cannot have generic arguments
--> $DIR/bad-name.rs:2:12
|
LL | let x.y::<isize>.z foo;
| ^^^^^^^
error: aborting due to 3 previous errors

1
tests/ui/suggestions/method-missing-parentheses.rs
View file

@ -1,5 +1,4 @@
fn main() {
let _ = vec![].into_iter().collect::<usize>;
//~^ ERROR attempted to take value of method `collect` on type `std::vec::IntoIter<_>`
//~| ERROR field expressions cannot have generic arguments
}

8
tests/ui/suggestions/method-missing-parentheses.stderr
View file

@ -1,9 +1,3 @@
error: field expressions cannot have generic arguments
--> $DIR/method-missing-parentheses.rs:2:41
|
LL | let _ = vec![].into_iter().collect::<usize>;
| ^^^^^^^
error[E0615]: attempted to take value of method `collect` on type `std::vec::IntoIter<_>`
--> $DIR/method-missing-parentheses.rs:2:32
|
@ -15,6 +9,6 @@ help: use parentheses to call the method
LL | let _ = vec![].into_iter().collect::<usize>();
| ++
error: aborting due to 2 previous errors
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0615`.