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Rollup merge of #77739 - est31:remove_unused_code, r=petrochenkov,varkor

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Remove unused code

Rustc has a builtin lint for detecting unused code inside a crate, but when an item is marked `pub`, the code, even if unused inside the entire workspace, is never marked as such. Therefore, I've built [warnalyzer](https://github.com/est31/warnalyzer) to detect unused items in a cross-crate setting.

Closes https://github.com/est31/warnalyzer/issues/2
This commit is contained in:
Yuki Okushi 2020-10-15 07:32:29 +09:00 committed by GitHub
commit 022d20759b
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46 changed files with 8 additions and 684 deletions
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38
compiler/rustc_ast/src/ast.rs
View File

@ -167,13 +167,6 @@ pub enum GenericArgs {
}
impl GenericArgs {
pub fn is_parenthesized(&self) -> bool {
match *self {
Parenthesized(..) => true,
_ => false,
}
}
pub fn is_angle_bracketed(&self) -> bool {
match *self {
AngleBracketed(..) => true,
@ -857,13 +850,6 @@ impl BinOpKind {
}
}
pub fn is_shift(&self) -> bool {
match *self {
BinOpKind::Shl | BinOpKind::Shr => true,
_ => false,
}
}
pub fn is_comparison(&self) -> bool {
use BinOpKind::*;
// Note for developers: please keep this as is;
@ -873,11 +859,6 @@ impl BinOpKind {
And | Or | Add | Sub | Mul | Div | Rem | BitXor | BitAnd | BitOr | Shl | Shr => false,
}
}
/// Returns `true` if the binary operator takes its arguments by value
pub fn is_by_value(&self) -> bool {
!self.is_comparison()
}
}
pub type BinOp = Spanned<BinOpKind>;
@ -896,14 +877,6 @@ pub enum UnOp {
}
impl UnOp {
/// Returns `true` if the unary operator takes its argument by value
pub fn is_by_value(u: UnOp) -> bool {
match u {
UnOp::Neg | UnOp::Not => true,
_ => false,
}
}
pub fn to_string(op: UnOp) -> &'static str {
match op {
UnOp::Deref => "*",
@ -1753,13 +1726,6 @@ impl IntTy {
}
}
pub fn val_to_string(&self, val: i128) -> String {
// Cast to a `u128` so we can correctly print `INT128_MIN`. All integral types
// are parsed as `u128`, so we wouldn't want to print an extra negative
// sign.
format!("{}{}", val as u128, self.name_str())
}
pub fn bit_width(&self) -> Option<u64> {
Some(match *self {
IntTy::Isize => return None,
@ -1818,10 +1784,6 @@ impl UintTy {
}
}
pub fn val_to_string(&self, val: u128) -> String {
format!("{}{}", val, self.name_str())
}
pub fn bit_width(&self) -> Option<u64> {
Some(match *self {
UintTy::Usize => return None,

9
compiler/rustc_ast/src/attr/mod.rs
View File

@ -101,11 +101,6 @@ impl NestedMetaItem {
self.meta_item().is_some()
}
/// Returns `true` if the variant is `Literal`.
pub fn is_literal(&self) -> bool {
self.literal().is_some()
}
/// Returns `true` if `self` is a `MetaItem` and the meta item is a word.
pub fn is_word(&self) -> bool {
self.meta_item().map_or(false, |meta_item| meta_item.is_word())
@ -232,10 +227,6 @@ impl MetaItem {
pub fn is_value_str(&self) -> bool {
self.value_str().is_some()
}
pub fn is_meta_item_list(&self) -> bool {
self.meta_item_list().is_some()
}
}
impl AttrItem {

10
compiler/rustc_ast/src/token.rs
View File

@ -54,16 +54,6 @@ pub enum DelimToken {
NoDelim,
}
impl DelimToken {
pub fn len(self) -> usize {
if self == NoDelim { 0 } else { 1 }
}
pub fn is_empty(self) -> bool {
self == NoDelim
}
}
#[derive(Clone, Copy, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)]
pub enum LitKind {
Bool, // AST only, must never appear in a `Token`

6
compiler/rustc_ast/src/tokenstream.rs
View File

@ -295,12 +295,6 @@ impl TokenStream {
.collect(),
))
}
pub fn map<F: FnMut(TokenTree) -> TokenTree>(self, mut f: F) -> TokenStream {
TokenStream(Lrc::new(
self.0.iter().map(|(tree, is_joint)| (f(tree.clone()), *is_joint)).collect(),
))
}
}
// 99.5%+ of the time we have 1 or 2 elements in this vector.

1
compiler/rustc_ast/src/util/parser.rs
View File

@ -231,7 +231,6 @@ impl AssocOp {
}
}
pub const PREC_RESET: i8 = -100;
pub const PREC_CLOSURE: i8 = -40;
pub const PREC_JUMP: i8 = -30;
pub const PREC_RANGE: i8 = -10;

5
compiler/rustc_codegen_llvm/src/llvm/mod.rs
View File

@ -118,11 +118,6 @@ pub fn SetUnnamedAddress(global: &'a Value, unnamed: UnnamedAddr) {
}
}
pub fn set_thread_local(global: &'a Value, is_thread_local: bool) {
unsafe {
LLVMSetThreadLocal(global, is_thread_local as Bool);
}
}
pub fn set_thread_local_mode(global: &'a Value, mode: ThreadLocalMode) {
unsafe {
LLVMSetThreadLocalMode(global, mode);

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

@ -1519,8 +1519,6 @@ fn start_executing_work<B: ExtraBackendMethods>(
}
}
pub const CODEGEN_WORKER_ID: usize = usize::MAX;
/// `FatalError` is explicitly not `Send`.
#[must_use]
pub struct WorkerFatalError;

2
compiler/rustc_codegen_ssa/src/base.rs
View File

@ -479,8 +479,6 @@ fn get_argc_argv<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
}
}
pub const CODEGEN_WORKER_ID: usize = usize::MAX;
pub fn codegen_crate<B: ExtraBackendMethods>(
backend: B,
tcx: TyCtxt<'tcx>,

6
compiler/rustc_data_structures/src/work_queue.rs
View File

@ -14,12 +14,6 @@ pub struct WorkQueue<T: Idx> {
}
impl<T: Idx> WorkQueue<T> {
/// Creates a new work queue with all the elements from (0..len).
#[inline]
pub fn with_all(len: usize) -> Self {
WorkQueue { deque: (0..len).map(T::new).collect(), set: BitSet::new_filled(len) }
}
/// Creates a new work queue that starts empty, where elements range from (0..len).
#[inline]
pub fn with_none(len: usize) -> Self {

13
compiler/rustc_errors/src/diagnostic.rs
View File

@ -121,11 +121,6 @@ impl Diagnostic {
self.level == Level::Cancelled
}
/// Set the sorting span.
pub fn set_sort_span(&mut self, sp: Span) {
self.sort_span = sp;
}
/// Adds a span/label to be included in the resulting snippet.
///
/// This is pushed onto the [`MultiSpan`] that was created when the diagnostic
@ -535,14 +530,6 @@ impl Diagnostic {
&self.message
}
/// Used by a lint. Copies over all details *but* the "main
/// message".
pub fn copy_details_not_message(&mut self, from: &Diagnostic) {
self.span = from.span.clone();
self.code = from.code.clone();
self.children.extend(from.children.iter().cloned())
}
/// Convenience function for internal use, clients should use one of the
/// public methods above.
pub fn sub(

2
compiler/rustc_errors/src/emitter.rs
View File

@ -510,8 +510,6 @@ impl Emitter for SilentEmitter {
fn emit_diagnostic(&mut self, _: &Diagnostic) {}
}
/// Maximum number of lines we will print for each error; arbitrary.
pub const MAX_HIGHLIGHT_LINES: usize = 6;
/// Maximum number of lines we will print for a multiline suggestion; arbitrary.
///
/// This should be replaced with a more involved mechanism to output multiline suggestions that

14
compiler/rustc_expand/src/base.rs
View File

@ -148,17 +148,6 @@ impl Annotatable {
}
}
pub fn map_item_or<F, G>(self, mut f: F, mut or: G) -> Annotatable
where
F: FnMut(P<ast::Item>) -> P<ast::Item>,
G: FnMut(Annotatable) -> Annotatable,
{
match self {
Annotatable::Item(i) => Annotatable::Item(f(i)),
_ => or(self),
}
}
pub fn expect_trait_item(self) -> P<ast::AssocItem> {
match self {
Annotatable::TraitItem(i) => i,
@ -1052,9 +1041,6 @@ impl<'a> ExtCtxt<'a> {
.chain(components.iter().map(|&s| Ident::with_dummy_span(s)))
.collect()
}
pub fn name_of(&self, st: &str) -> Symbol {
Symbol::intern(st)
}
pub fn check_unused_macros(&mut self) {
self.resolver.check_unused_macros();

97
compiler/rustc_expand/src/build.rs
View File

@ -139,24 +139,6 @@ impl<'a> ExtCtxt<'a> {
ast::Lifetime { id: ast::DUMMY_NODE_ID, ident: ident.with_span_pos(span) }
}
pub fn lifetime_def(
&self,
span: Span,
ident: Ident,
attrs: Vec<ast::Attribute>,
bounds: ast::GenericBounds,
) -> ast::GenericParam {
let lifetime = self.lifetime(span, ident);
ast::GenericParam {
ident: lifetime.ident,
id: lifetime.id,
attrs: attrs.into(),
bounds,
kind: ast::GenericParamKind::Lifetime,
is_placeholder: false,
}
}
pub fn stmt_expr(&self, expr: P<ast::Expr>) -> ast::Stmt {
ast::Stmt {
id: ast::DUMMY_NODE_ID,
@ -465,24 +447,6 @@ impl<'a> ExtCtxt<'a> {
self.pat_tuple_struct(span, path, vec![pat])
}
pub fn pat_none(&self, span: Span) -> P<ast::Pat> {
let some = self.std_path(&[sym::option, sym::Option, sym::None]);
let path = self.path_global(span, some);
self.pat_path(span, path)
}
pub fn pat_ok(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
let some = self.std_path(&[sym::result, sym::Result, sym::Ok]);
let path = self.path_global(span, some);
self.pat_tuple_struct(span, path, vec![pat])
}
pub fn pat_err(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
let some = self.std_path(&[sym::result, sym::Result, sym::Err]);
let path = self.path_global(span, some);
self.pat_tuple_struct(span, path, vec![pat])
}
pub fn arm(&self, span: Span, pat: P<ast::Pat>, expr: P<ast::Expr>) -> ast::Arm {
ast::Arm {
attrs: vec![],
@ -514,26 +478,6 @@ impl<'a> ExtCtxt<'a> {
self.expr(span, ast::ExprKind::If(cond, self.block_expr(then), els))
}
pub fn lambda_fn_decl(
&self,
span: Span,
fn_decl: P<ast::FnDecl>,
body: P<ast::Expr>,
fn_decl_span: Span,
) -> P<ast::Expr> {
self.expr(
span,
ast::ExprKind::Closure(
ast::CaptureBy::Ref,
ast::Async::No,
ast::Movability::Movable,
fn_decl,
body,
fn_decl_span,
),
)
}
pub fn lambda(&self, span: Span, ids: Vec<Ident>, body: P<ast::Expr>) -> P<ast::Expr> {
let fn_decl = self.fn_decl(
ids.iter().map(|id| self.param(span, *id, self.ty(span, ast::TyKind::Infer))).collect(),
@ -610,47 +554,6 @@ impl<'a> ExtCtxt<'a> {
})
}
pub fn variant(&self, span: Span, ident: Ident, tys: Vec<P<ast::Ty>>) -> ast::Variant {
let vis_span = span.shrink_to_lo();
let fields: Vec<_> = tys
.into_iter()
.map(|ty| ast::StructField {
span: ty.span,
ty,
ident: None,
vis: ast::Visibility {
span: vis_span,
kind: ast::VisibilityKind::Inherited,
tokens: None,
},
attrs: Vec::new(),
id: ast::DUMMY_NODE_ID,
is_placeholder: false,
})
.collect();
let vdata = if fields.is_empty() {
ast::VariantData::Unit(ast::DUMMY_NODE_ID)
} else {
ast::VariantData::Tuple(fields, ast::DUMMY_NODE_ID)
};
ast::Variant {
attrs: Vec::new(),
data: vdata,
disr_expr: None,
id: ast::DUMMY_NODE_ID,
ident,
vis: ast::Visibility {
span: vis_span,
kind: ast::VisibilityKind::Inherited,
tokens: None,
},
span,
is_placeholder: false,
}
}
pub fn item_static(
&self,
span: Span,

27
compiler/rustc_fs_util/src/lib.rs
View File

@ -75,33 +75,6 @@ pub fn link_or_copy<P: AsRef<Path>, Q: AsRef<Path>>(p: P, q: Q) -> io::Result<Li
}
}
#[derive(Debug)]
pub enum RenameOrCopyRemove {
Rename,
CopyRemove,
}
/// Rename `p` into `q`, preferring to use `rename` if possible.
/// If `rename` fails (rename may fail for reasons such as crossing
/// filesystem), fallback to copy & remove
pub fn rename_or_copy_remove<P: AsRef<Path>, Q: AsRef<Path>>(
p: P,
q: Q,
) -> io::Result<RenameOrCopyRemove> {
let p = p.as_ref();
let q = q.as_ref();
match fs::rename(p, q) {
Ok(()) => Ok(RenameOrCopyRemove::Rename),
Err(_) => match fs::copy(p, q) {
Ok(_) => {
fs::remove_file(p)?;
Ok(RenameOrCopyRemove::CopyRemove)
}
Err(e) => Err(e),
},
}
}
#[cfg(unix)]
pub fn path_to_c_string(p: &Path) -> CString {
use std::ffi::OsStr;

4
compiler/rustc_hir/src/definitions.rs
View File

@ -188,10 +188,6 @@ pub struct DefPath {
}
impl DefPath {
pub fn is_local(&self) -> bool {
self.krate == LOCAL_CRATE
}
pub fn make<FN>(krate: CrateNum, start_index: DefIndex, mut get_key: FN) -> DefPath
where
FN: FnMut(DefIndex) -> DefKey,

52
compiler/rustc_hir/src/hir.rs
View File

@ -3,7 +3,6 @@ use crate::def_id::DefId;
crate use crate::hir_id::HirId;
use crate::{itemlikevisit, LangItem};
use rustc_ast::node_id::NodeMap;
use rustc_ast::util::parser::ExprPrecedence;
use rustc_ast::{self as ast, CrateSugar, LlvmAsmDialect};
use rustc_ast::{AttrVec, Attribute, FloatTy, IntTy, Label, LitKind, StrStyle, UintTy};
@ -306,10 +305,6 @@ impl GenericArgs<'_> {
Self { args: &[], bindings: &[], parenthesized: false }
}
pub fn is_empty(&self) -> bool {
self.args.is_empty() && self.bindings.is_empty() && !self.parenthesized
}
pub fn inputs(&self) -> &[Ty<'_>] {
if self.parenthesized {
for arg in self.args {
@ -467,23 +462,6 @@ impl Generics<'hir> {
}
}
pub fn own_counts(&self) -> GenericParamCount {
// We could cache this as a property of `GenericParamCount`, but
// the aim is to refactor this away entirely eventually and the
// presence of this method will be a constant reminder.
let mut own_counts: GenericParamCount = Default::default();
for param in self.params {
match param.kind {
GenericParamKind::Lifetime { .. } => own_counts.lifetimes += 1,
GenericParamKind::Type { .. } => own_counts.types += 1,
GenericParamKind::Const { .. } => own_counts.consts += 1,
};
}
own_counts
}
pub fn get_named(&self, name: Symbol) -> Option<&GenericParam<'_>> {
for param in self.params {
if name == param.name.ident().name {
@ -2679,8 +2657,6 @@ pub struct Upvar {
pub span: Span,
}
pub type CaptureModeMap = NodeMap<CaptureBy>;
// The TraitCandidate's import_ids is empty if the trait is defined in the same module, and
// has length > 0 if the trait is found through an chain of imports, starting with the
// import/use statement in the scope where the trait is used.
@ -2766,32 +2742,4 @@ impl<'hir> Node<'hir> {
_ => None,
}
}
pub fn hir_id(&self) -> Option<HirId> {
match self {
Node::Item(Item { hir_id, .. })
| Node::ForeignItem(ForeignItem { hir_id, .. })
| Node::TraitItem(TraitItem { hir_id, .. })
| Node::ImplItem(ImplItem { hir_id, .. })
| Node::Field(StructField { hir_id, .. })
| Node::AnonConst(AnonConst { hir_id, .. })
| Node::Expr(Expr { hir_id, .. })
| Node::Stmt(Stmt { hir_id, .. })
| Node::Ty(Ty { hir_id, .. })
| Node::Binding(Pat { hir_id, .. })
| Node::Pat(Pat { hir_id, .. })
| Node::Arm(Arm { hir_id, .. })
| Node::Block(Block { hir_id, .. })
| Node::Local(Local { hir_id, .. })
| Node::MacroDef(MacroDef { hir_id, .. })
| Node::Lifetime(Lifetime { hir_id, .. })
| Node::Param(Param { hir_id, .. })
| Node::GenericParam(GenericParam { hir_id, .. }) => Some(*hir_id),
Node::TraitRef(TraitRef { hir_ref_id, .. }) => Some(*hir_ref_id),
Node::PathSegment(PathSegment { hir_id, .. }) => *hir_id,
Node::Variant(Variant { id, .. }) => Some(*id),
Node::Ctor(variant) => variant.ctor_hir_id(),
Node::Crate(_) | Node::Visibility(_) => None,
}
}
}

2
compiler/rustc_hir/src/hir_id.rs
View File

@ -45,5 +45,3 @@ pub const CRATE_HIR_ID: HirId = HirId {
owner: LocalDefId { local_def_index: CRATE_DEF_INDEX },
local_id: ItemLocalId::from_u32(0),
};
pub const DUMMY_ITEM_LOCAL_ID: ItemLocalId = ItemLocalId::MAX;

28
compiler/rustc_hir/src/pat_util.rs
View File

@ -58,25 +58,6 @@ impl<T: ExactSizeIterator> EnumerateAndAdjustIterator for T {
}
impl hir::Pat<'_> {
pub fn is_refutable(&self) -> bool {
match self.kind {
PatKind::Lit(_)
| PatKind::Range(..)
| PatKind::Path(hir::QPath::Resolved(Some(..), _) | hir::QPath::TypeRelative(..)) => {
true
}
PatKind::Path(hir::QPath::Resolved(_, ref path))
| PatKind::TupleStruct(hir::QPath::Resolved(_, ref path), ..)
| PatKind::Struct(hir::QPath::Resolved(_, ref path), ..) => match path.res {
Res::Def(DefKind::Variant, _) => true,
_ => false,
},
PatKind::Slice(..) => true,
_ => false,
}
}
/// Call `f` on every "binding" in a pattern, e.g., on `a` in
/// `match foo() { Some(a) => (), None => () }`
pub fn each_binding(&self, mut f: impl FnMut(hir::BindingAnnotation, HirId, Span, Ident)) {
@ -117,15 +98,6 @@ impl hir::Pat<'_> {
})
}
/// Checks if the pattern contains any patterns that bind something to
/// an ident or wildcard, e.g., `foo`, or `Foo(_)`, `foo @ Bar(..)`,
pub fn contains_bindings_or_wild(&self) -> bool {
self.satisfies(|p| match p.kind {
PatKind::Binding(..) | PatKind::Wild => true,
_ => false,
})
}
/// Checks if the pattern satisfies the given predicate on some sub-pattern.
fn satisfies(&self, pred: impl Fn(&hir::Pat<'_>) -> bool) -> bool {
let mut satisfies = false;

6
compiler/rustc_hir_pretty/src/lib.rs
View File

@ -44,9 +44,6 @@ pub trait PpAnn {
fn nested(&self, _state: &mut State<'_>, _nested: Nested) {}
fn pre(&self, _state: &mut State<'_>, _node: AnnNode<'_>) {}
fn post(&self, _state: &mut State<'_>, _node: AnnNode<'_>) {}
fn try_fetch_item(&self, _: hir::HirId) -> Option<&hir::Item<'_>> {
None
}
}
pub struct NoAnn;
@ -54,9 +51,6 @@ impl PpAnn for NoAnn {}
pub const NO_ANN: &dyn PpAnn = &NoAnn;
impl PpAnn for hir::Crate<'_> {
fn try_fetch_item(&self, item: hir::HirId) -> Option<&hir::Item<'_>> {
Some(self.item(item))
}
fn nested(&self, state: &mut State<'_>, nested: Nested) {
match nested {
Nested::Item(id) => state.print_item(self.item(id.id)),

31
compiler/rustc_infer/src/infer/mod.rs
View File

@ -113,13 +113,6 @@ impl Default for RegionckMode {
}
impl RegionckMode {
pub fn suppressed(self) -> bool {
match self {
Self::Solve => false,
Self::Erase { suppress_errors } => suppress_errors,
}
}
/// Indicates that the MIR borrowck will repeat these region
/// checks, so we should ignore errors if NLL is (unconditionally)
/// enabled.
@ -420,15 +413,6 @@ pub enum SubregionOrigin<'tcx> {
#[cfg(target_arch = "x86_64")]
static_assert_size!(SubregionOrigin<'_>, 32);
/// Places that type/region parameters can appear.
#[derive(Clone, Copy, Debug)]
pub enum ParameterOrigin {
Path, // foo::bar
MethodCall, // foo.bar() <-- parameters on impl providing bar()
OverloadedOperator, // a + b when overloaded
OverloadedDeref, // *a when overloaded
}
/// Times when we replace late-bound regions with variables:
#[derive(Clone, Copy, Debug)]
pub enum LateBoundRegionConversionTime {
@ -508,21 +492,6 @@ pub enum NLLRegionVariableOrigin {
},
}
impl NLLRegionVariableOrigin {
pub fn is_universal(self) -> bool {
match self {
NLLRegionVariableOrigin::FreeRegion => true,
NLLRegionVariableOrigin::Placeholder(..) => true,
NLLRegionVariableOrigin::Existential { .. } => false,
NLLRegionVariableOrigin::RootEmptyRegion => false,
}
}
pub fn is_existential(self) -> bool {
!self.is_universal()
}
}
// FIXME(eddyb) investigate overlap between this and `TyOrConstInferVar`.
#[derive(Copy, Clone, Debug)]
pub enum FixupError<'tcx> {

7
compiler/rustc_infer/src/infer/nll_relate/mod.rs
View File

@ -28,7 +28,6 @@ use rustc_data_structures::fx::FxHashMap;
use rustc_middle::ty::error::TypeError;
use rustc_middle::ty::fold::{TypeFoldable, TypeVisitor};
use rustc_middle::ty::relate::{self, Relate, RelateResult, TypeRelation};
use rustc_middle::ty::subst::GenericArg;
use rustc_middle::ty::{self, InferConst, Ty, TyCtxt};
use std::fmt::Debug;
@ -119,12 +118,6 @@ pub trait TypeRelatingDelegate<'tcx> {
fn forbid_inference_vars() -> bool;
}
#[derive(Clone, Debug)]
struct ScopesAndKind<'tcx> {
scopes: Vec<BoundRegionScope<'tcx>>,
kind: GenericArg<'tcx>,
}
#[derive(Clone, Debug, Default)]
struct BoundRegionScope<'tcx> {
map: FxHashMap<ty::BoundRegion, ty::Region<'tcx>>,

2
compiler/rustc_infer/src/traits/mod.rs
View File

@ -59,9 +59,7 @@ pub type TraitObligation<'tcx> = Obligation<'tcx, ty::PolyTraitPredicate<'tcx>>;
#[cfg(target_arch = "x86_64")]
static_assert_size!(PredicateObligation<'_>, 32);
pub type Obligations<'tcx, O> = Vec<Obligation<'tcx, O>>;
pub type PredicateObligations<'tcx> = Vec<PredicateObligation<'tcx>>;
pub type TraitObligations<'tcx> = Vec<TraitObligation<'tcx>>;
pub type Selection<'tcx> = ImplSource<'tcx, PredicateObligation<'tcx>>;

4
compiler/rustc_lint/src/context.rs
View File

@ -711,10 +711,6 @@ impl<'tcx> LateContext<'tcx> {
}
}
pub fn current_lint_root(&self) -> hir::HirId {
self.last_node_with_lint_attrs
}
/// Check if a `DefId`'s path matches the given absolute type path usage.
///
/// Anonymous scopes such as `extern` imports are matched with `kw::Invalid`;

21
compiler/rustc_metadata/src/rmeta/decoder.rs
View File

@ -313,27 +313,6 @@ impl<'a, 'tcx> TyDecoder<'tcx> for DecodeContext<'a, 'tcx> {
Ok(ty)
}
fn cached_predicate_for_shorthand<F>(
&mut self,
shorthand: usize,
or_insert_with: F,
) -> Result<ty::Predicate<'tcx>, Self::Error>
where
F: FnOnce(&mut Self) -> Result<ty::Predicate<'tcx>, Self::Error>,
{
let tcx = self.tcx();
let key = ty::CReaderCacheKey { cnum: self.cdata().cnum, pos: shorthand };
if let Some(&pred) = tcx.pred_rcache.borrow().get(&key) {
return Ok(pred);
}
let pred = or_insert_with(self)?;
tcx.pred_rcache.borrow_mut().insert(key, pred);
Ok(pred)
}
fn with_position<F, R>(&mut self, pos: usize, f: F) -> R
where
F: FnOnce(&mut Self) -> R,

5
compiler/rustc_middle/src/middle/privacy.rs
View File

@ -3,7 +3,6 @@
//! which are available for use externally when compiled as a library.
use rustc_data_structures::fx::FxHashMap;
use rustc_hir::def_id::DefIdSet;
use rustc_hir::HirId;
use rustc_macros::HashStable;
use std::fmt;
@ -59,7 +58,3 @@ impl<Id: Hash + Eq + fmt::Debug> fmt::Debug for AccessLevels<Id> {
fmt::Debug::fmt(&self.map, f)
}
}
/// A set containing all exported definitions from external crates.
/// The set does not contain any entries from local crates.
pub type ExternalExports = DefIdSet;

9
compiler/rustc_middle/src/mir/interpret/value.rs
View File

@ -56,15 +56,6 @@ impl<'tcx> ConstValue<'tcx> {
}
}
pub fn try_to_str_slice(&self) -> Option<&'tcx str> {
if let ConstValue::Slice { data, start, end } = *self {
std::str::from_utf8(data.inspect_with_uninit_and_ptr_outside_interpreter(start..end))
.ok()
} else {
None
}
}
pub fn try_to_bits(&self, size: Size) -> Option<u128> {
self.try_to_scalar()?.to_bits(size).ok()
}

56
compiler/rustc_middle/src/mir/mod.rs
View File

@ -3,7 +3,7 @@
//! [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/mir/index.html
use crate::mir::coverage::{CodeRegion, CoverageKind};
use crate::mir::interpret::{Allocation, ConstValue, GlobalAlloc, Scalar};
use crate::mir::interpret::{Allocation, GlobalAlloc, Scalar};
use crate::mir::visit::MirVisitable;
use crate::ty::adjustment::PointerCast;
use crate::ty::codec::{TyDecoder, TyEncoder};
@ -460,17 +460,6 @@ impl<'tcx> Body<'tcx> {
}
}
/// Checks if `sub` is a sub scope of `sup`
pub fn is_sub_scope(&self, mut sub: SourceScope, sup: SourceScope) -> bool {
while sub != sup {
match self.source_scopes[sub].parent_scope {
None => return false,
Some(p) => sub = p,
}
}
true
}
/// Returns the return type; it always return first element from `local_decls` array.
#[inline]
pub fn return_ty(&self) -> Ty<'tcx> {
@ -1978,45 +1967,6 @@ impl<'tcx> Operand<'tcx> {
})
}
/// Convenience helper to make a `Scalar` from the given `Operand`, assuming that `Operand`
/// wraps a constant literal value. Panics if this is not the case.
pub fn scalar_from_const(operand: &Operand<'tcx>) -> Scalar {
match operand {
Operand::Constant(constant) => match constant.literal.val.try_to_scalar() {
Some(scalar) => scalar,
_ => panic!("{:?}: Scalar value expected", constant.literal.val),
},
_ => panic!("{:?}: Constant expected", operand),
}
}
/// Convenience helper to make a literal-like constant from a given `&str` slice.
/// Since this is used to synthesize MIR, assumes `user_ty` is None.
pub fn const_from_str(tcx: TyCtxt<'tcx>, val: &str, span: Span) -> Operand<'tcx> {
let tcx = tcx;
let allocation = Allocation::from_byte_aligned_bytes(val.as_bytes());
let allocation = tcx.intern_const_alloc(allocation);
let const_val = ConstValue::Slice { data: allocation, start: 0, end: val.len() };
let ty = tcx.mk_imm_ref(tcx.lifetimes.re_erased, tcx.types.str_);
Operand::Constant(box Constant {
span,
user_ty: None,
literal: ty::Const::from_value(tcx, const_val, ty),
})
}
/// Convenience helper to make a `ConstValue` from the given `Operand`, assuming that `Operand`
/// wraps a constant value (such as a `&str` slice). Panics if this is not the case.
pub fn value_from_const(operand: &Operand<'tcx>) -> ConstValue<'tcx> {
match operand {
Operand::Constant(constant) => match constant.literal.val.try_to_value() {
Some(const_value) => const_value,
_ => panic!("{:?}: ConstValue expected", constant.literal.val),
},
_ => panic!("{:?}: Constant expected", operand),
}
}
pub fn to_copy(&self) -> Self {
match *self {
Operand::Copy(_) | Operand::Constant(_) => self.clone(),
@ -2413,10 +2363,6 @@ impl<'tcx> UserTypeProjections {
self.contents.is_empty()
}
pub fn from_projections(projs: impl Iterator<Item = (UserTypeProjection, Span)>) -> Self {
UserTypeProjections { contents: projs.collect() }
}
pub fn projections_and_spans(
&self,
) -> impl Iterator<Item = &(UserTypeProjection, Span)> + ExactSizeIterator {

12
compiler/rustc_middle/src/mir/query.rs
View File

@ -413,18 +413,6 @@ pub struct CoverageInfo {
/// For more information on why this is needed, consider looking
/// at the docs for `WithOptConstParam` itself.
impl<'tcx> TyCtxt<'tcx> {
#[inline]
pub fn mir_borrowck_opt_const_arg(
self,
def: ty::WithOptConstParam<LocalDefId>,
) -> &'tcx BorrowCheckResult<'tcx> {
if let Some(param_did) = def.const_param_did {
self.mir_borrowck_const_arg((def.did, param_did))
} else {
self.mir_borrowck(def.did)
}
}
#[inline]
pub fn mir_const_qualif_opt_const_arg(
self,

10
compiler/rustc_middle/src/mir/visit.rs
View File

@ -1186,16 +1186,6 @@ impl PlaceContext {
)
}
/// Returns `true` if this place context represents a storage live marker.
pub fn is_storage_live_marker(&self) -> bool {
matches!(self, PlaceContext::NonUse(NonUseContext::StorageLive))
}
/// Returns `true` if this place context represents a storage dead marker.
pub fn is_storage_dead_marker(&self) -> bool {
matches!(self, PlaceContext::NonUse(NonUseContext::StorageDead))
}
/// Returns `true` if this place context represents a use that potentially changes the value.
pub fn is_mutating_use(&self) -> bool {
matches!(self, PlaceContext::MutatingUse(..))

8
compiler/rustc_middle/src/ty/codec.rs
View File

@ -182,14 +182,6 @@ pub trait TyDecoder<'tcx>: Decoder {
where
F: FnOnce(&mut Self) -> Result<Ty<'tcx>, Self::Error>;
fn cached_predicate_for_shorthand<F>(
&mut self,
shorthand: usize,
or_insert_with: F,
) -> Result<ty::Predicate<'tcx>, Self::Error>
where
F: FnOnce(&mut Self) -> Result<ty::Predicate<'tcx>, Self::Error>;
fn with_position<F, R>(&mut self, pos: usize, f: F) -> R
where
F: FnOnce(&mut Self) -> R;

4
compiler/rustc_middle/src/ty/context.rs
View File

@ -534,10 +534,6 @@ impl<'tcx> TypeckResults<'tcx> {
self.node_type(pat.hir_id)
}
pub fn pat_ty_opt(&self, pat: &hir::Pat<'_>) -> Option<Ty<'tcx>> {
self.node_type_opt(pat.hir_id)
}
// Returns the type of an expression as a monotype.
//
// NB (1): This is the PRE-ADJUSTMENT TYPE for the expression. That is, in

51
compiler/rustc_middle/src/ty/fold.rs
View File

@ -97,9 +97,6 @@ pub trait TypeFoldable<'tcx>: fmt::Debug + Clone {
fn has_infer_types_or_consts(&self) -> bool {
self.has_type_flags(TypeFlags::HAS_TY_INFER | TypeFlags::HAS_CT_INFER)
}
fn has_infer_consts(&self) -> bool {
self.has_type_flags(TypeFlags::HAS_CT_INFER)
}
fn needs_infer(&self) -> bool {
self.has_type_flags(TypeFlags::NEEDS_INFER)
}
@ -113,9 +110,6 @@ pub trait TypeFoldable<'tcx>: fmt::Debug + Clone {
fn needs_subst(&self) -> bool {
self.has_type_flags(TypeFlags::NEEDS_SUBST)
}
fn has_re_placeholders(&self) -> bool {
self.has_type_flags(TypeFlags::HAS_RE_PLACEHOLDER)
}
/// "Free" regions in this context means that it has any region
/// that is not (a) erased or (b) late-bound.
fn has_free_regions(&self) -> bool {
@ -719,21 +713,15 @@ impl<'tcx> TyCtxt<'tcx> {
// vars. See comment on `shift_vars_through_binders` method in
// `subst.rs` for more details.
enum Direction {
In,
Out,
}
struct Shifter<'tcx> {
tcx: TyCtxt<'tcx>,
current_index: ty::DebruijnIndex,
amount: u32,
direction: Direction,
}
impl Shifter<'tcx> {
pub fn new(tcx: TyCtxt<'tcx>, amount: u32, direction: Direction) -> Self {
Shifter { tcx, current_index: ty::INNERMOST, amount, direction }
pub fn new(tcx: TyCtxt<'tcx>, amount: u32) -> Self {
Shifter { tcx, current_index: ty::INNERMOST, amount }
}
}
@ -755,13 +743,7 @@ impl TypeFolder<'tcx> for Shifter<'tcx> {
if self.amount == 0 || debruijn < self.current_index {
r
} else {
let debruijn = match self.direction {
Direction::In => debruijn.shifted_in(self.amount),
Direction::Out => {
assert!(debruijn.as_u32() >= self.amount);
debruijn.shifted_out(self.amount)
}
};
let debruijn = debruijn.shifted_in(self.amount);
let shifted = ty::ReLateBound(debruijn, br);
self.tcx.mk_region(shifted)
}
@ -776,13 +758,7 @@ impl TypeFolder<'tcx> for Shifter<'tcx> {
if self.amount == 0 || debruijn < self.current_index {
ty
} else {
let debruijn = match self.direction {
Direction::In => debruijn.shifted_in(self.amount),
Direction::Out => {
assert!(debruijn.as_u32() >= self.amount);
debruijn.shifted_out(self.amount)
}
};
let debruijn = debruijn.shifted_in(self.amount);
self.tcx.mk_ty(ty::Bound(debruijn, bound_ty))
}
}
@ -796,13 +772,7 @@ impl TypeFolder<'tcx> for Shifter<'tcx> {
if self.amount == 0 || debruijn < self.current_index {
ct
} else {
let debruijn = match self.direction {
Direction::In => debruijn.shifted_in(self.amount),
Direction::Out => {
assert!(debruijn.as_u32() >= self.amount);
debruijn.shifted_out(self.amount)
}
};
let debruijn = debruijn.shifted_in(self.amount);
self.tcx.mk_const(ty::Const { val: ty::ConstKind::Bound(debruijn, bound_ct), ty })
}
} else {
@ -830,16 +800,7 @@ where
{
debug!("shift_vars(value={:?}, amount={})", value, amount);
value.fold_with(&mut Shifter::new(tcx, amount, Direction::In))
}
pub fn shift_out_vars<'tcx, T>(tcx: TyCtxt<'tcx>, value: &T, amount: u32) -> T
where
T: TypeFoldable<'tcx>,
{
debug!("shift_out_vars(value={:?}, amount={})", value, amount);
value.fold_with(&mut Shifter::new(tcx, amount, Direction::Out))
value.fold_with(&mut Shifter::new(tcx, amount))
}
/// An "escaping var" is a bound var whose binder is not part of `t`. A bound var can be a

8
compiler/rustc_middle/src/ty/inhabitedness/mod.rs
View File

@ -104,14 +104,6 @@ impl<'tcx> TyCtxt<'tcx> {
// ```
ty.uninhabited_from(self, param_env).contains(self, module)
}
pub fn is_ty_uninhabited_from_any_module(
self,
ty: Ty<'tcx>,
param_env: ty::ParamEnv<'tcx>,
) -> bool {
!ty.uninhabited_from(self, param_env).is_empty()
}
}
impl<'tcx> AdtDef {

32
compiler/rustc_middle/src/ty/mod.rs
View File

@ -7,7 +7,6 @@ pub use self::Variance::*;
use crate::hir::exports::ExportMap;
use crate::ich::StableHashingContext;
use crate::infer::canonical::Canonical;
use crate::middle::cstore::CrateStoreDyn;
use crate::middle::resolve_lifetime::ObjectLifetimeDefault;
use crate::mir::interpret::ErrorHandled;
@ -656,8 +655,6 @@ impl<'a, 'tcx> HashStable<StableHashingContext<'a>> for TyS<'tcx> {
#[rustc_diagnostic_item = "Ty"]
pub type Ty<'tcx> = &'tcx TyS<'tcx>;
pub type CanonicalTy<'tcx> = Canonical<'tcx, Ty<'tcx>>;
#[derive(Clone, Copy, PartialEq, Eq, Hash, TyEncodable, TyDecodable, HashStable)]
pub struct UpvarPath {
pub hir_id: hir::HirId,
@ -767,10 +764,6 @@ pub enum IntVarValue {
pub struct FloatVarValue(pub ast::FloatTy);
impl ty::EarlyBoundRegion {
pub fn to_bound_region(&self) -> ty::BoundRegion {
ty::BoundRegion::BrNamed(self.def_id, self.name)
}
/// Does this early bound region have a name? Early bound regions normally
/// always have names except when using anonymous lifetimes (`'_`).
pub fn has_name(&self) -> bool {
@ -821,14 +814,6 @@ impl GenericParamDef {
bug!("cannot convert a non-lifetime parameter def to an early bound region")
}
}
pub fn to_bound_region(&self) -> ty::BoundRegion {
if let GenericParamDefKind::Lifetime = self.kind {
self.to_early_bound_region_data().to_bound_region()
} else {
bug!("cannot convert a non-lifetime parameter def to an early bound region")
}
}
}
#[derive(Default)]
@ -1003,22 +988,6 @@ impl<'tcx> GenericPredicates<'tcx> {
instantiated.predicates.extend(self.predicates.iter().map(|(p, _)| p));
instantiated.spans.extend(self.predicates.iter().map(|(_, s)| s));
}
pub fn instantiate_supertrait(
&self,
tcx: TyCtxt<'tcx>,
poly_trait_ref: &ty::PolyTraitRef<'tcx>,
) -> InstantiatedPredicates<'tcx> {
assert_eq!(self.parent, None);
InstantiatedPredicates {
predicates: self
.predicates
.iter()
.map(|(pred, _)| pred.subst_supertrait(tcx, poly_trait_ref))
.collect(),
spans: self.predicates.iter().map(|(_, sp)| *sp).collect(),
}
}
}
#[derive(Debug)]
@ -1303,7 +1272,6 @@ impl<'tcx> PolyTraitPredicate<'tcx> {
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)]
#[derive(HashStable, TypeFoldable)]
pub struct OutlivesPredicate<A, B>(pub A, pub B); // `A: B`
pub type PolyOutlivesPredicate<A, B> = ty::Binder<OutlivesPredicate<A, B>>;
pub type RegionOutlivesPredicate<'tcx> = OutlivesPredicate<ty::Region<'tcx>, ty::Region<'tcx>>;
pub type TypeOutlivesPredicate<'tcx> = OutlivesPredicate<Ty<'tcx>, ty::Region<'tcx>>;
pub type PolyRegionOutlivesPredicate<'tcx> = ty::Binder<RegionOutlivesPredicate<'tcx>>;

23
compiler/rustc_middle/src/ty/query/on_disk_cache.rs
View File

@ -601,29 +601,6 @@ impl<'a, 'tcx> TyDecoder<'tcx> for CacheDecoder<'a, 'tcx> {
Ok(ty)
}
fn cached_predicate_for_shorthand<F>(
&mut self,
shorthand: usize,
or_insert_with: F,
) -> Result<ty::Predicate<'tcx>, Self::Error>
where
F: FnOnce(&mut Self) -> Result<ty::Predicate<'tcx>, Self::Error>,
{
let tcx = self.tcx();
let cache_key =
ty::CReaderCacheKey { cnum: CrateNum::ReservedForIncrCompCache, pos: shorthand };
if let Some(&pred) = tcx.pred_rcache.borrow().get(&cache_key) {
return Ok(pred);
}
let pred = or_insert_with(self)?;
// This may overwrite the entry, but it should overwrite with the same value.
tcx.pred_rcache.borrow_mut().insert_same(cache_key, pred);
Ok(pred)
}
fn with_position<F, R>(&mut self, pos: usize, f: F) -> R
where
F: FnOnce(&mut Self) -> R,

3
compiler/rustc_middle/src/ty/subst.rs
View File

@ -1,6 +1,5 @@
// Type substitutions.
use crate::infer::canonical::Canonical;
use crate::ty::codec::{TyDecoder, TyEncoder};
use crate::ty::fold::{TypeFoldable, TypeFolder, TypeVisitor};
use crate::ty::sty::{ClosureSubsts, GeneratorSubsts};
@ -648,8 +647,6 @@ impl<'a, 'tcx> SubstFolder<'a, 'tcx> {
}
}
pub type CanonicalUserSubsts<'tcx> = Canonical<'tcx, UserSubsts<'tcx>>;
/// Stores the user-given substs to reach some fully qualified path
/// (e.g., `<T>::Item` or `<T as Trait>::Item`).
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, TyEncodable, TyDecodable)]

9
compiler/rustc_mir/src/dataflow/framework/engine.rs
View File

@ -62,15 +62,6 @@ where
let blocks = mir::traversal::reachable(body);
visit_results(body, blocks.map(|(bb, _)| bb), self, vis)
}
pub fn visit_in_rpo_with(
&self,
body: &'mir mir::Body<'tcx>,
vis: &mut impl ResultsVisitor<'mir, 'tcx, FlowState = A::Domain>,
) {
let blocks = mir::traversal::reverse_postorder(body);
visit_results(body, blocks.map(|(bb, _)| bb), self, vis)
}
}
/// A solver for dataflow problems.

16
compiler/rustc_parse/src/lib.rs
View File

@ -114,16 +114,6 @@ pub fn new_parser_from_file<'a>(sess: &'a ParseSess, path: &Path, sp: Option<Spa
source_file_to_parser(sess, file_to_source_file(sess, path, sp))
}
/// Creates a new parser, returning buffered diagnostics if the file doesn't exist,
/// or from lexing the initial token stream.
pub fn maybe_new_parser_from_file<'a>(
sess: &'a ParseSess,
path: &Path,
) -> Result<Parser<'a>, Vec<Diagnostic>> {
let file = try_file_to_source_file(sess, path, None).map_err(|db| vec![db])?;
maybe_source_file_to_parser(sess, file)
}
/// Given a `source_file` and config, returns a parser.
fn source_file_to_parser(sess: &ParseSess, source_file: Lrc<SourceFile>) -> Parser<'_> {
panictry_buffer!(&sess.span_diagnostic, maybe_source_file_to_parser(sess, source_file))
@ -146,12 +136,6 @@ fn maybe_source_file_to_parser(
Ok(parser)
}
// Must preserve old name for now, because `quote!` from the *existing*
// compiler expands into it.
pub fn new_parser_from_tts(sess: &ParseSess, tts: Vec<TokenTree>) -> Parser<'_> {
stream_to_parser(sess, tts.into_iter().collect(), crate::MACRO_ARGUMENTS)
}
// Base abstractions
/// Given a session and a path and an optional span (for error reporting),

4
compiler/rustc_query_system/src/dep_graph/dep_node.rs
View File

@ -165,10 +165,6 @@ impl WorkProductId {
cgu_name.hash(&mut hasher);
WorkProductId { hash: hasher.finish() }
}
pub fn from_fingerprint(fingerprint: Fingerprint) -> WorkProductId {
WorkProductId { hash: fingerprint }
}
}
impl<HCX> HashStable<HCX> for WorkProductId {

5
compiler/rustc_query_system/src/dep_graph/graph.rs
View File

@ -402,11 +402,6 @@ impl<K: DepKind> DepGraph<K> {
self.data.as_ref().unwrap().previous.fingerprint_of(dep_node)
}
#[inline]
pub fn prev_dep_node_index_of(&self, dep_node: &DepNode<K>) -> SerializedDepNodeIndex {
self.data.as_ref().unwrap().previous.node_to_index(dep_node)
}
/// Checks whether a previous work product exists for `v` and, if
/// so, return the path that leads to it. Used to skip doing work.
pub fn previous_work_product(&self, v: &WorkProductId) -> Option<WorkProduct> {

19
compiler/rustc_query_system/src/dep_graph/query.rs
View File

@ -1,7 +1,5 @@
use rustc_data_structures::fx::FxHashMap;
use rustc_data_structures::graph::implementation::{
Direction, Graph, NodeIndex, INCOMING, OUTGOING,
};
use rustc_data_structures::graph::implementation::{Direction, Graph, NodeIndex, INCOMING};
use super::{DepKind, DepNode};
@ -52,23 +50,8 @@ impl<K: DepKind> DepGraphQuery<K> {
}
}
/// All nodes reachable from `node`. In other words, things that
/// will have to be recomputed if `node` changes.
pub fn transitive_successors(&self, node: &DepNode<K>) -> Vec<&DepNode<K>> {
self.reachable_nodes(node, OUTGOING)
}
/// All nodes that can reach `node`.
pub fn transitive_predecessors(&self, node: &DepNode<K>) -> Vec<&DepNode<K>> {
self.reachable_nodes(node, INCOMING)
}
/// Just the outgoing edges from `node`.
pub fn immediate_successors(&self, node: &DepNode<K>) -> Vec<&DepNode<K>> {
if let Some(&index) = self.indices.get(&node) {
self.graph.successor_nodes(index).map(|s| self.graph.node_data(s)).collect()
} else {
vec![]
}
}
}

2
compiler/rustc_session/src/session.rs
View File

@ -1586,5 +1586,3 @@ pub fn early_warn(output: config::ErrorOutputType, msg: &str) {
let handler = rustc_errors::Handler::with_emitter(true, None, emitter);
handler.struct_warn(msg).emit();
}
pub type CompileResult = Result<(), ErrorReported>;

8
compiler/rustc_span/src/hygiene.rs
View File

@ -619,14 +619,6 @@ impl SyntaxContext {
HygieneData::with(|data| data.outer_mark(self))
}
#[inline]
pub fn outer_mark_with_data(self) -> (ExpnId, Transparency, ExpnData) {
HygieneData::with(|data| {
let (expn_id, transparency) = data.outer_mark(self);
(expn_id, transparency, data.expn_data(expn_id).clone())
})
}
pub fn dollar_crate_name(self) -> Symbol {
HygieneData::with(|data| data.syntax_context_data[self.0 as usize].dollar_crate_name)
}

6
compiler/rustc_span/src/lib.rs
View File

@ -223,12 +223,6 @@ impl FileName {
}
}
pub fn quote_expansion_source_code(src: &str) -> FileName {
let mut hasher = StableHasher::new();
src.hash(&mut hasher);
FileName::QuoteExpansion(hasher.finish())
}
pub fn macro_expansion_source_code(src: &str) -> FileName {
let mut hasher = StableHasher::new();
src.hash(&mut hasher);

9
compiler/rustc_span/src/source_map.rs
View File

@ -451,15 +451,6 @@ impl SourceMap {
}
}
/// Returns a new `Span` covering the start and end `BytePos`s of the file containing the given
/// `pos`. This can be used to quickly determine if another `BytePos` or `Span` is from the same
/// file.
pub fn lookup_file_span(&self, pos: BytePos) -> Span {
let idx = self.lookup_source_file_idx(pos);
let SourceFile { start_pos, end_pos, .. } = *(*self.files.borrow().source_files)[idx];
Span::with_root_ctxt(start_pos, end_pos)
}
/// Returns `Some(span)`, a union of the LHS and RHS span. The LHS must precede the RHS. If
/// there are gaps between LHS and RHS, the resulting union will cross these gaps.
/// For this to work,

4
compiler/rustc_trait_selection/src/traits/select/mod.rs
View File

@ -290,10 +290,6 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
self.infcx.tcx
}
pub fn closure_typer(&self) -> &'cx InferCtxt<'cx, 'tcx> {
self.infcx
}
///////////////////////////////////////////////////////////////////////////
// Selection
//