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Auto merge of #120089 - matthiaskrgr:rollup-xyfqrb5, r=matthiaskrgr

Browse Source 
Rollup of 8 pull requests

Successful merges:

 - #119172 (Detect `NulInCStr` error earlier.)
 - #119833 (Make tcx optional from StableMIR run macro and extend it to accept closures)
 - #119967 (Add `PatKind::Err` to AST/HIR)
 - #119978 (Move async closure parameters into the resultant closure's future eagerly)
 - #120021 (don't store const var origins for known vars)
 - #120038 (Don't create a separate "basename" when naming and opening a MIR dump file)
 - #120057 (Don't ICE when deducing future output if other errors already occurred)
 - #120073 (Remove spastorino from users_on_vacation)

r? `@ghost`
`@rustbot` modify labels: rollup
This commit is contained in:
bors 2024-01-18 16:39:32 +00:00
commit 8424f8e8cd
75 changed files with 774 additions and 657 deletions
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6
compiler/rustc_ast/src/ast.rs
View File

@ -625,7 +625,8 @@ impl Pat {
| PatKind::Range(..)
| PatKind::Ident(..)
| PatKind::Path(..)
| PatKind::MacCall(_) => {}
| PatKind::MacCall(_)
| PatKind::Err(_) => {}
}
}
@ -809,6 +810,9 @@ pub enum PatKind {
/// A macro pattern; pre-expansion.
MacCall(P<MacCall>),
/// Placeholder for a pattern that wasn't syntactically well formed in some way.
Err(ErrorGuaranteed),
}
/// Whether the `..` is present in a struct fields pattern.

2
compiler/rustc_ast/src/mut_visit.rs
View File

@ -1267,7 +1267,7 @@ pub fn noop_visit_pat<T: MutVisitor>(pat: &mut P<Pat>, vis: &mut T) {
let Pat { id, kind, span, tokens } = pat.deref_mut();
vis.visit_id(id);
match kind {
PatKind::Wild | PatKind::Rest | PatKind::Never => {}
PatKind::Wild | PatKind::Rest | PatKind::Never | PatKind::Err(_) => {}
PatKind::Ident(_binding_mode, ident, sub) => {
vis.visit_ident(ident);
visit_opt(sub, |sub| vis.visit_pat(sub));

12
compiler/rustc_ast/src/util/literal.rs
View File

@ -8,7 +8,6 @@ use rustc_lexer::unescape::{
};
use rustc_span::symbol::{kw, sym, Symbol};
use rustc_span::Span;
use std::ops::Range;
use std::{ascii, fmt, str};
// Escapes a string, represented as a symbol. Reuses the original symbol,
@ -39,7 +38,6 @@ pub enum LitError {
InvalidFloatSuffix,
NonDecimalFloat(u32),
IntTooLarge(u32),
NulInCStr(Range<usize>),
}
impl LitKind {
@ -156,10 +154,7 @@ impl LitKind {
let s = symbol.as_str();
let mut buf = Vec::with_capacity(s.len());
let mut error = Ok(());
unescape_c_string(s, Mode::CStr, &mut |span, c| match c {
Ok(CStrUnit::Byte(0) | CStrUnit::Char('\0')) => {
error = Err(LitError::NulInCStr(span));
}
unescape_c_string(s, Mode::CStr, &mut |_span, c| match c {
Ok(CStrUnit::Byte(b)) => buf.push(b),
Ok(CStrUnit::Char(c)) => {
buf.extend_from_slice(c.encode_utf8(&mut [0; 4]).as_bytes())
@ -179,10 +174,7 @@ impl LitKind {
// can convert the symbol directly to a `Lrc<u8>` on success.
let s = symbol.as_str();
let mut error = Ok(());
unescape_c_string(s, Mode::RawCStr, &mut |span, c| match c {
Ok(CStrUnit::Byte(0) | CStrUnit::Char('\0')) => {
error = Err(LitError::NulInCStr(span));
}
unescape_c_string(s, Mode::RawCStr, &mut |_, c| match c {
Ok(_) => {}
Err(err) => {
if err.is_fatal() {

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

@ -568,7 +568,7 @@ pub fn walk_pat<'a, V: Visitor<'a>>(visitor: &mut V, pattern: &'a Pat) {
walk_list!(visitor, visit_expr, lower_bound);
walk_list!(visitor, visit_expr, upper_bound);
}
PatKind::Wild | PatKind::Rest | PatKind::Never => {}
PatKind::Wild | PatKind::Rest | PatKind::Never | PatKind::Err(_) => {}
PatKind::Tuple(elems) | PatKind::Slice(elems) | PatKind::Or(elems) => {
walk_list!(visitor, visit_pat, elems);
}

4
compiler/rustc_ast_lowering/messages.ftl
View File

@ -14,10 +14,6 @@ ast_lowering_assoc_ty_parentheses =
ast_lowering_async_coroutines_not_supported =
`async` coroutines are not yet supported
ast_lowering_async_non_move_closure_not_supported =
`async` non-`move` closures with parameters are not currently supported
.help = consider using `let` statements to manually capture variables by reference before entering an `async move` closure
ast_lowering_att_syntax_only_x86 =
the `att_syntax` option is only supported on x86

8
compiler/rustc_ast_lowering/src/errors.rs
View File

@ -145,14 +145,6 @@ pub struct ClosureCannotBeStatic {
pub fn_decl_span: Span,
}
#[derive(Diagnostic, Clone, Copy)]
#[help]
#[diag(ast_lowering_async_non_move_closure_not_supported, code = "E0708")]
pub struct AsyncNonMoveClosureNotSupported {
#[primary_span]
pub fn_decl_span: Span,
}
#[derive(Diagnostic, Clone, Copy)]
#[diag(ast_lowering_functional_record_update_destructuring_assignment)]
pub struct FunctionalRecordUpdateDestructuringAssignment {

41
compiler/rustc_ast_lowering/src/expr.rs
View File

@ -1,6 +1,6 @@
use super::errors::{
AsyncCoroutinesNotSupported, AsyncNonMoveClosureNotSupported, AwaitOnlyInAsyncFnAndBlocks,
BaseExpressionDoubleDot, ClosureCannotBeStatic, CoroutineTooManyParameters,
AsyncCoroutinesNotSupported, AwaitOnlyInAsyncFnAndBlocks, BaseExpressionDoubleDot,
ClosureCannotBeStatic, CoroutineTooManyParameters,
FunctionalRecordUpdateDestructuringAssignment, InclusiveRangeWithNoEnd, MatchArmWithNoBody,
NeverPatternWithBody, NeverPatternWithGuard, NotSupportedForLifetimeBinderAsyncClosure,
UnderscoreExprLhsAssign,
@ -13,7 +13,6 @@ use rustc_ast::*;
use rustc_data_structures::stack::ensure_sufficient_stack;
use rustc_hir as hir;
use rustc_hir::def::{DefKind, Res};
use rustc_middle::span_bug;
use rustc_session::errors::report_lit_error;
use rustc_span::source_map::{respan, Spanned};
use rustc_span::symbol::{kw, sym, Ident, Symbol};
@ -1028,28 +1027,16 @@ impl<'hir> LoweringContext<'_, 'hir> {
fn_decl_span: Span,
fn_arg_span: Span,
) -> hir::ExprKind<'hir> {
let CoroutineKind::Async { closure_id: inner_closure_id, .. } = coroutine_kind else {
span_bug!(fn_decl_span, "`async gen` and `gen` closures are not supported, yet");
};
if let &ClosureBinder::For { span, .. } = binder {
self.dcx().emit_err(NotSupportedForLifetimeBinderAsyncClosure { span });
}
let (binder_clause, generic_params) = self.lower_closure_binder(binder);
let outer_decl =
FnDecl { inputs: decl.inputs.clone(), output: FnRetTy::Default(fn_decl_span) };
let body = self.with_new_scopes(fn_decl_span, |this| {
// FIXME(cramertj): allow `async` non-`move` closures with arguments.
if capture_clause == CaptureBy::Ref && !decl.inputs.is_empty() {
this.dcx().emit_err(AsyncNonMoveClosureNotSupported { fn_decl_span });
}
// Transform `async |x: u8| -> X { ... }` into
// `|x: u8| || -> X { ... }`.
let body_id = this.lower_fn_body(&outer_decl, |this| {
let body_id = this.lower_body(|this| {
let async_ret_ty = if let FnRetTy::Ty(ty) = &decl.output {
let itctx = ImplTraitContext::Disallowed(ImplTraitPosition::AsyncBlock);
Some(hir::FnRetTy::Return(this.lower_ty(ty, &itctx)))
@ -1057,22 +1044,26 @@ impl<'hir> LoweringContext<'_, 'hir> {
None
};
let async_body = this.make_desugared_coroutine_expr(
capture_clause,
inner_closure_id,
async_ret_ty,
body.span,
hir::CoroutineDesugaring::Async,
hir::CoroutineSource::Closure,
let (parameters, expr) = this.lower_coroutine_body_with_moved_arguments(
decl,
|this| this.with_new_scopes(fn_decl_span, |this| this.lower_expr_mut(body)),
body.span,
coroutine_kind,
hir::CoroutineSource::Closure,
async_ret_ty,
);
let hir_id = this.lower_node_id(inner_closure_id);
let hir_id = this.lower_node_id(coroutine_kind.closure_id());
this.maybe_forward_track_caller(body.span, closure_hir_id, hir_id);
hir::Expr { hir_id, kind: async_body, span: this.lower_span(body.span) }
(parameters, expr)
});
body_id
});
let outer_decl =
FnDecl { inputs: decl.inputs.clone(), output: FnRetTy::Default(fn_decl_span) };
let bound_generic_params = self.lower_lifetime_binder(closure_id, generic_params);
// We need to lower the declaration outside the new scope, because we
// have to conserve the state of being inside a loop condition for the

390
compiler/rustc_ast_lowering/src/item.rs
View File

@ -1082,196 +1082,226 @@ impl<'hir> LoweringContext<'_, 'hir> {
let (Some(coroutine_kind), Some(body)) = (coroutine_kind, body) else {
return self.lower_fn_body_block(span, decl, body);
};
let closure_id = coroutine_kind.closure_id();
self.lower_body(|this| {
let mut parameters: Vec<hir::Param<'_>> = Vec::new();
let mut statements: Vec<hir::Stmt<'_>> = Vec::new();
// Async function parameters are lowered into the closure body so that they are
// captured and so that the drop order matches the equivalent non-async functions.
//
// from:
//
// async fn foo(<pattern>: <ty>, <pattern>: <ty>, <pattern>: <ty>) {
// <body>
// }
//
// into:
//
// fn foo(__arg0: <ty>, __arg1: <ty>, __arg2: <ty>) {
// async move {
// let __arg2 = __arg2;
// let <pattern> = __arg2;
// let __arg1 = __arg1;
// let <pattern> = __arg1;
// let __arg0 = __arg0;
// let <pattern> = __arg0;
// drop-temps { <body> } // see comments later in fn for details
// }
// }
//
// If `<pattern>` is a simple ident, then it is lowered to a single
// `let <pattern> = <pattern>;` statement as an optimization.
//
// Note that the body is embedded in `drop-temps`; an
// equivalent desugaring would be `return { <body>
// };`. The key point is that we wish to drop all the
// let-bound variables and temporaries created in the body
// (and its tail expression!) before we drop the
// parameters (c.f. rust-lang/rust#64512).
for (index, parameter) in decl.inputs.iter().enumerate() {
let parameter = this.lower_param(parameter);
let span = parameter.pat.span;
// Check if this is a binding pattern, if so, we can optimize and avoid adding a
// `let <pat> = __argN;` statement. In this case, we do not rename the parameter.
let (ident, is_simple_parameter) = match parameter.pat.kind {
hir::PatKind::Binding(hir::BindingAnnotation(ByRef::No, _), _, ident, _) => {
(ident, true)
}
// For `ref mut` or wildcard arguments, we can't reuse the binding, but
// we can keep the same name for the parameter.
// This lets rustdoc render it correctly in documentation.
hir::PatKind::Binding(_, _, ident, _) => (ident, false),
hir::PatKind::Wild => {
(Ident::with_dummy_span(rustc_span::symbol::kw::Underscore), false)
}
_ => {
// Replace the ident for bindings that aren't simple.
let name = format!("__arg{index}");
let ident = Ident::from_str(&name);
(ident, false)
}
};
let desugared_span = this.mark_span_with_reason(DesugaringKind::Async, span, None);
// Construct a parameter representing `__argN: <ty>` to replace the parameter of the
// async function.
//
// If this is the simple case, this parameter will end up being the same as the
// original parameter, but with a different pattern id.
let stmt_attrs = this.attrs.get(&parameter.hir_id.local_id).copied();
let (new_parameter_pat, new_parameter_id) = this.pat_ident(desugared_span, ident);
let new_parameter = hir::Param {
hir_id: parameter.hir_id,
pat: new_parameter_pat,
ty_span: this.lower_span(parameter.ty_span),
span: this.lower_span(parameter.span),
};
if is_simple_parameter {
// If this is the simple case, then we only insert one statement that is
// `let <pat> = <pat>;`. We re-use the original argument's pattern so that
// `HirId`s are densely assigned.
let expr = this.expr_ident(desugared_span, ident, new_parameter_id);
let stmt = this.stmt_let_pat(
stmt_attrs,
desugared_span,
Some(expr),
parameter.pat,
hir::LocalSource::AsyncFn,
);
statements.push(stmt);
} else {
// If this is not the simple case, then we construct two statements:
//
// ```
// let __argN = __argN;
// let <pat> = __argN;
// ```
//
// The first statement moves the parameter into the closure and thus ensures
// that the drop order is correct.
//
// The second statement creates the bindings that the user wrote.
// Construct the `let mut __argN = __argN;` statement. It must be a mut binding
// because the user may have specified a `ref mut` binding in the next
// statement.
let (move_pat, move_id) = this.pat_ident_binding_mode(
desugared_span,
ident,
hir::BindingAnnotation::MUT,
);
let move_expr = this.expr_ident(desugared_span, ident, new_parameter_id);
let move_stmt = this.stmt_let_pat(
None,
desugared_span,
Some(move_expr),
move_pat,
hir::LocalSource::AsyncFn,
);
// Construct the `let <pat> = __argN;` statement. We re-use the original
// parameter's pattern so that `HirId`s are densely assigned.
let pattern_expr = this.expr_ident(desugared_span, ident, move_id);
let pattern_stmt = this.stmt_let_pat(
stmt_attrs,
desugared_span,
Some(pattern_expr),
parameter.pat,
hir::LocalSource::AsyncFn,
);
statements.push(move_stmt);
statements.push(pattern_stmt);
};
parameters.push(new_parameter);
}
let mkbody = |this: &mut LoweringContext<'_, 'hir>| {
// Create a block from the user's function body:
let user_body = this.lower_block_expr(body);
// Transform into `drop-temps { <user-body> }`, an expression:
let desugared_span =
this.mark_span_with_reason(DesugaringKind::Async, user_body.span, None);
let user_body = this.expr_drop_temps(desugared_span, this.arena.alloc(user_body));
// As noted above, create the final block like
//
// ```
// {
// let $param_pattern = $raw_param;
// ...
// drop-temps { <user-body> }
// }
// ```
let body = this.block_all(
desugared_span,
this.arena.alloc_from_iter(statements),
Some(user_body),
);
this.expr_block(body)
};
let desugaring_kind = match coroutine_kind {
CoroutineKind::Async { .. } => hir::CoroutineDesugaring::Async,
CoroutineKind::Gen { .. } => hir::CoroutineDesugaring::Gen,
CoroutineKind::AsyncGen { .. } => hir::CoroutineDesugaring::AsyncGen,
};
let coroutine_expr = this.make_desugared_coroutine_expr(
CaptureBy::Value { move_kw: rustc_span::DUMMY_SP },
closure_id,
None,
let (parameters, expr) = this.lower_coroutine_body_with_moved_arguments(
decl,
|this| this.lower_block_expr(body),
body.span,
desugaring_kind,
coroutine_kind,
hir::CoroutineSource::Fn,
mkbody,
None,
);
let hir_id = this.lower_node_id(closure_id);
// FIXME(async_fn_track_caller): Can this be moved above?
let hir_id = this.lower_node_id(coroutine_kind.closure_id());
this.maybe_forward_track_caller(body.span, fn_id, hir_id);
let expr = hir::Expr { hir_id, kind: coroutine_expr, span: this.lower_span(body.span) };
(this.arena.alloc_from_iter(parameters), expr)
(parameters, expr)
})
}
/// Lowers a desugared coroutine body after moving all of the arguments
/// into the body. This is to make sure that the future actually owns the
/// arguments that are passed to the function, and to ensure things like
/// drop order are stable.
pub fn lower_coroutine_body_with_moved_arguments(
&mut self,
decl: &FnDecl,
lower_body: impl FnOnce(&mut LoweringContext<'_, 'hir>) -> hir::Expr<'hir>,
body_span: Span,
coroutine_kind: CoroutineKind,
coroutine_source: hir::CoroutineSource,
return_type_hint: Option<hir::FnRetTy<'hir>>,
) -> (&'hir [hir::Param<'hir>], hir::Expr<'hir>) {
let mut parameters: Vec<hir::Param<'_>> = Vec::new();
let mut statements: Vec<hir::Stmt<'_>> = Vec::new();
// Async function parameters are lowered into the closure body so that they are
// captured and so that the drop order matches the equivalent non-async functions.
//
// from:
//
// async fn foo(<pattern>: <ty>, <pattern>: <ty>, <pattern>: <ty>) {
// <body>
// }
//
// into:
//
// fn foo(__arg0: <ty>, __arg1: <ty>, __arg2: <ty>) {
// async move {
// let __arg2 = __arg2;
// let <pattern> = __arg2;
// let __arg1 = __arg1;
// let <pattern> = __arg1;
// let __arg0 = __arg0;
// let <pattern> = __arg0;
// drop-temps { <body> } // see comments later in fn for details
// }
// }
//
// If `<pattern>` is a simple ident, then it is lowered to a single
// `let <pattern> = <pattern>;` statement as an optimization.
//
// Note that the body is embedded in `drop-temps`; an
// equivalent desugaring would be `return { <body>
// };`. The key point is that we wish to drop all the
// let-bound variables and temporaries created in the body
// (and its tail expression!) before we drop the
// parameters (c.f. rust-lang/rust#64512).
for (index, parameter) in decl.inputs.iter().enumerate() {
let parameter = self.lower_param(parameter);
let span = parameter.pat.span;
// Check if this is a binding pattern, if so, we can optimize and avoid adding a
// `let <pat> = __argN;` statement. In this case, we do not rename the parameter.
let (ident, is_simple_parameter) = match parameter.pat.kind {
hir::PatKind::Binding(hir::BindingAnnotation(ByRef::No, _), _, ident, _) => {
(ident, true)
}
// For `ref mut` or wildcard arguments, we can't reuse the binding, but
// we can keep the same name for the parameter.
// This lets rustdoc render it correctly in documentation.
hir::PatKind::Binding(_, _, ident, _) => (ident, false),
hir::PatKind::Wild => {
(Ident::with_dummy_span(rustc_span::symbol::kw::Underscore), false)
}
_ => {
// Replace the ident for bindings that aren't simple.
let name = format!("__arg{index}");
let ident = Ident::from_str(&name);
(ident, false)
}
};
let desugared_span = self.mark_span_with_reason(DesugaringKind::Async, span, None);
// Construct a parameter representing `__argN: <ty>` to replace the parameter of the
// async function.
//
// If this is the simple case, this parameter will end up being the same as the
// original parameter, but with a different pattern id.
let stmt_attrs = self.attrs.get(&parameter.hir_id.local_id).copied();
let (new_parameter_pat, new_parameter_id) = self.pat_ident(desugared_span, ident);
let new_parameter = hir::Param {
hir_id: parameter.hir_id,
pat: new_parameter_pat,
ty_span: self.lower_span(parameter.ty_span),
span: self.lower_span(parameter.span),
};
if is_simple_parameter {
// If this is the simple case, then we only insert one statement that is
// `let <pat> = <pat>;`. We re-use the original argument's pattern so that
// `HirId`s are densely assigned.
let expr = self.expr_ident(desugared_span, ident, new_parameter_id);
let stmt = self.stmt_let_pat(
stmt_attrs,
desugared_span,
Some(expr),
parameter.pat,
hir::LocalSource::AsyncFn,
);
statements.push(stmt);
} else {
// If this is not the simple case, then we construct two statements:
//
// ```
// let __argN = __argN;
// let <pat> = __argN;
// ```
//
// The first statement moves the parameter into the closure and thus ensures
// that the drop order is correct.
//
// The second statement creates the bindings that the user wrote.
// Construct the `let mut __argN = __argN;` statement. It must be a mut binding
// because the user may have specified a `ref mut` binding in the next
// statement.
let (move_pat, move_id) =
self.pat_ident_binding_mode(desugared_span, ident, hir::BindingAnnotation::MUT);
let move_expr = self.expr_ident(desugared_span, ident, new_parameter_id);
let move_stmt = self.stmt_let_pat(
None,
desugared_span,
Some(move_expr),
move_pat,
hir::LocalSource::AsyncFn,
);
// Construct the `let <pat> = __argN;` statement. We re-use the original
// parameter's pattern so that `HirId`s are densely assigned.
let pattern_expr = self.expr_ident(desugared_span, ident, move_id);
let pattern_stmt = self.stmt_let_pat(
stmt_attrs,
desugared_span,
Some(pattern_expr),
parameter.pat,
hir::LocalSource::AsyncFn,
);
statements.push(move_stmt);
statements.push(pattern_stmt);
};
parameters.push(new_parameter);
}
let mkbody = |this: &mut LoweringContext<'_, 'hir>| {
// Create a block from the user's function body:
let user_body = lower_body(this);
// Transform into `drop-temps { <user-body> }`, an expression:
let desugared_span =
this.mark_span_with_reason(DesugaringKind::Async, user_body.span, None);
let user_body = this.expr_drop_temps(desugared_span, this.arena.alloc(user_body));
// As noted above, create the final block like
//
// ```
// {
// let $param_pattern = $raw_param;
// ...
// drop-temps { <user-body> }
// }
// ```
let body = this.block_all(
desugared_span,
this.arena.alloc_from_iter(statements),
Some(user_body),
);
this.expr_block(body)
};
let desugaring_kind = match coroutine_kind {
CoroutineKind::Async { .. } => hir::CoroutineDesugaring::Async,
CoroutineKind::Gen { .. } => hir::CoroutineDesugaring::Gen,
CoroutineKind::AsyncGen { .. } => hir::CoroutineDesugaring::AsyncGen,
};
let closure_id = coroutine_kind.closure_id();
let coroutine_expr = self.make_desugared_coroutine_expr(
// FIXME(async_closures): This should only move locals,
// and not upvars. Capturing closure upvars by ref doesn't
// work right now anyways, so whatever.
CaptureBy::Value { move_kw: rustc_span::DUMMY_SP },
closure_id,
return_type_hint,
body_span,
desugaring_kind,
coroutine_source,
mkbody,
);
let expr = hir::Expr {
hir_id: self.lower_node_id(closure_id),
kind: coroutine_expr,
span: self.lower_span(body_span),
};
(self.arena.alloc_from_iter(parameters), expr)
}
fn lower_method_sig(
&mut self,
generics: &Generics,

1
compiler/rustc_ast_lowering/src/pat.rs
View File

@ -109,6 +109,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
// return inner to be processed in next loop
PatKind::Paren(inner) => pattern = inner,
PatKind::MacCall(_) => panic!("{:?} shouldn't exist here", pattern.span),
PatKind::Err(guar) => break hir::PatKind::Err(*guar),
}
};

5
compiler/rustc_ast_pretty/src/pprust/state.rs
View File

@ -1519,6 +1519,11 @@ impl<'a> State<'a> {
self.pclose();
}
PatKind::MacCall(m) => self.print_mac(m),
PatKind::Err(_) => {
self.popen();
self.word("/*ERROR*/");
self.pclose();
}
}
self.ann.post(self, AnnNode::Pat(pat))
}

6
compiler/rustc_error_codes/src/error_codes/E0708.md
View File

@ -1,12 +1,14 @@
#### Note: this error code is no longer emitted by the compiler.
`async` non-`move` closures with parameters are currently not supported.
Erroneous code example:
```compile_fail,edition2018,E0708
```edition2018
#![feature(async_closure)]
fn main() {
let add_one = async |num: u8| { // error!
let add_one = async |num: u8| {
num + 1
};
}

7
compiler/rustc_hir/src/hir.rs
View File

@ -1015,7 +1015,7 @@ impl<'hir> Pat<'hir> {
use PatKind::*;
match self.kind {
Wild | Never | Lit(_) | Range(..) | Binding(.., None) | Path(_) => true,
Wild | Never | Lit(_) | Range(..) | Binding(.., None) | Path(_) | Err(_) => true,
Box(s) | Ref(s, _) | Binding(.., Some(s)) => s.walk_short_(it),
Struct(_, fields, _) => fields.iter().all(|field| field.pat.walk_short_(it)),
TupleStruct(_, s, _) | Tuple(s, _) | Or(s) => s.iter().all(|p| p.walk_short_(it)),
@ -1042,7 +1042,7 @@ impl<'hir> Pat<'hir> {
use PatKind::*;
match self.kind {
Wild | Never | Lit(_) | Range(..) | Binding(.., None) | Path(_) => {}
Wild | Never | Lit(_) | Range(..) | Binding(.., None) | Path(_) | Err(_) => {}
Box(s) | Ref(s, _) | Binding(.., Some(s)) => s.walk_(it),
Struct(_, fields, _) => fields.iter().for_each(|field| field.pat.walk_(it)),
TupleStruct(_, s, _) | Tuple(s, _) | Or(s) => s.iter().for_each(|p| p.walk_(it)),
@ -1205,6 +1205,9 @@ pub enum PatKind<'hir> {
/// PatKind::Slice([Binding(a), Binding(b)], Some(Wild), [Binding(c), Binding(d)])
/// ```
Slice(&'hir [Pat<'hir>], Option<&'hir Pat<'hir>>, &'hir [Pat<'hir>]),
/// A placeholder for a pattern that wasn't well formed in some way.
Err(ErrorGuaranteed),
}
/// A statement.

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

@ -655,7 +655,7 @@ pub fn walk_pat<'v, V: Visitor<'v>>(visitor: &mut V, pattern: &'v Pat<'v>) {
walk_list!(visitor, visit_expr, lower_bound);
walk_list!(visitor, visit_expr, upper_bound);
}
PatKind::Never | PatKind::Wild => (),
PatKind::Never | PatKind::Wild | PatKind::Err(_) => (),
PatKind::Slice(prepatterns, ref slice_pattern, postpatterns) => {
walk_list!(visitor, visit_pat, prepatterns);
walk_list!(visitor, visit_pat, slice_pattern);

3
compiler/rustc_hir_analysis/src/check/region.rs
View File

@ -681,7 +681,8 @@ fn resolve_local<'tcx>(
| PatKind::Never
| PatKind::Path(_)
| PatKind::Lit(_)
| PatKind::Range(_, _, _) => false,
| PatKind::Range(_, _, _)
| PatKind::Err(_) => false,
}
}

5
compiler/rustc_hir_pretty/src/lib.rs
View File

@ -1838,6 +1838,11 @@ impl<'a> State<'a> {
self.commasep(Inconsistent, after, |s, p| s.print_pat(p));
self.word("]");
}
PatKind::Err(_) => {
self.popen();
self.word("/*ERROR*/");
self.pclose();
}
}
self.ann.post(self, AnnNode::Pat(pat))
}

82
compiler/rustc_hir_typeck/src/callee.rs
View File

@ -293,49 +293,59 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
callee_node: &hir::ExprKind<'_>,
callee_span: Span,
) {
let hir::ExprKind::Block(..) = callee_node else {
// Only calls on blocks suggested here.
return;
};
let hir = self.tcx.hir();
let parent_hir_id = hir.parent_id(hir_id);
let parent_node = self.tcx.hir_node(parent_hir_id);
if let (
hir::Node::Expr(hir::Expr {
kind: hir::ExprKind::Closure(&hir::Closure { fn_decl_span, kind, .. }),
let fn_decl_span = if let hir::Node::Expr(hir::Expr {
kind: hir::ExprKind::Closure(&hir::Closure { fn_decl_span, .. }),
..
}) = hir.get_parent(hir_id)
{
fn_decl_span
} else if let Some((
_,
hir::Node::Expr(&hir::Expr {
hir_id: parent_hir_id,
kind:
hir::ExprKind::Closure(&hir::Closure {
kind:
hir::ClosureKind::Coroutine(hir::CoroutineKind::Desugared(
hir::CoroutineDesugaring::Async,
hir::CoroutineSource::Closure,
)),
..
}),
..
}),
hir::ExprKind::Block(..),
) = (parent_node, callee_node)
)) = hir.parent_iter(hir_id).nth(3)
{
let fn_decl_span = if matches!(
kind,
hir::ClosureKind::Coroutine(hir::CoroutineKind::Desugared(
hir::CoroutineDesugaring::Async,
hir::CoroutineSource::Closure
),)
) {
// Actually need to unwrap one more layer of HIR to get to
// the _real_ closure...
let async_closure = hir.parent_id(parent_hir_id);
if let hir::Node::Expr(hir::Expr {
kind: hir::ExprKind::Closure(&hir::Closure { fn_decl_span, .. }),
..
}) = self.tcx.hir_node(async_closure)
{
fn_decl_span
} else {
return;
}
} else {
// Actually need to unwrap one more layer of HIR to get to
// the _real_ closure...
let async_closure = hir.parent_id(parent_hir_id);
if let hir::Node::Expr(hir::Expr {
kind: hir::ExprKind::Closure(&hir::Closure { fn_decl_span, .. }),
..
}) = self.tcx.hir_node(async_closure)
{
fn_decl_span
};
} else {
return;
}
} else {
return;
};
let start = fn_decl_span.shrink_to_lo();
let end = callee_span.shrink_to_hi();
err.multipart_suggestion(
"if you meant to create this closure and immediately call it, surround the \
let start = fn_decl_span.shrink_to_lo();
let end = callee_span.shrink_to_hi();
err.multipart_suggestion(
"if you meant to create this closure and immediately call it, surround the \
closure with parentheses",
vec![(start, "(".to_string()), (end, ")".to_string())],
Applicability::MaybeIncorrect,
);
}
vec![(start, "(".to_string()), (end, ")".to_string())],
Applicability::MaybeIncorrect,
);
}
/// Give appropriate suggestion when encountering `[("a", 0) ("b", 1)]`, where the

14
compiler/rustc_hir_typeck/src/closure.rs
View File

@ -754,16 +754,22 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
get_future_output(obligation.predicate, obligation.cause.span)
})?
}
ty::Alias(ty::Projection, _) => {
return Some(Ty::new_error_with_message(
self.tcx,
closure_span,
"this projection should have been projected to an opaque type",
));
}
ty::Alias(ty::Opaque, ty::AliasTy { def_id, args, .. }) => self
.tcx
.explicit_item_bounds(def_id)
.iter_instantiated_copied(self.tcx, args)
.find_map(|(p, s)| get_future_output(p.as_predicate(), s))?,
ty::Error(_) => return Some(ret_ty),
_ => span_bug!(
closure_span,
"async fn coroutine return type not an inference variable: {ret_ty}"
),
_ => {
span_bug!(closure_span, "invalid async fn coroutine return type: {ret_ty:?}")
}
};
let output_ty = self.normalize(closure_span, output_ty);

10
compiler/rustc_hir_typeck/src/expr_use_visitor.rs
View File

@ -458,11 +458,15 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> {
needs_to_be_read = true;
}
}
PatKind::Or(_) | PatKind::Box(_) | PatKind::Ref(..) | PatKind::Wild => {
PatKind::Or(_)
| PatKind::Box(_)
| PatKind::Ref(..)
| PatKind::Wild
| PatKind::Err(_) => {
// If the PatKind is Or, Box, or Ref, the decision is made later
// as these patterns contains subpatterns
// If the PatKind is Wild, the decision is made based on the other patterns being
// examined
// If the PatKind is Wild or Err, the decision is made based on the other patterns
// being examined
}
}
})?

3
compiler/rustc_hir_typeck/src/mem_categorization.rs
View File

@ -767,7 +767,8 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
| PatKind::Lit(..)
| PatKind::Range(..)
| PatKind::Never
| PatKind::Wild => {
| PatKind::Wild
| PatKind::Err(_) => {
// always ok
}
}

7
compiler/rustc_hir_typeck/src/pat.rs
View File

@ -177,7 +177,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
PatInfo { binding_mode: def_bm, top_info: ti, decl_origin: pat_info.decl_origin };
let ty = match pat.kind {
PatKind::Wild => expected,
PatKind::Wild | PatKind::Err(_) => expected,
// FIXME(never_patterns): check the type is uninhabited. If that is not possible within
// typeck, do that in a later phase.
PatKind::Never => expected,
@ -325,6 +325,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
PatKind::Ref(..) => AdjustMode::Reset,
// A `_` pattern works with any expected type, so there's no need to do anything.
PatKind::Wild
// A malformed pattern doesn't have an expected type, so let's just accept any type.
| PatKind::Err(_)
// Bindings also work with whatever the expected type is,
// and moreover if we peel references off, that will give us the wrong binding type.
// Also, we can have a subpattern `binding @ pat`.
@ -754,7 +756,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
| PatKind::Box(..)
| PatKind::Ref(..)
| PatKind::Lit(..)
| PatKind::Range(..) => break 'block None,
| PatKind::Range(..)
| PatKind::Err(_) => break 'block None,
},
// Don't provide suggestions in other cases

33
compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs
View File

@ -13,7 +13,9 @@ use rustc_hir::def_id::{DefId, LocalDefId};
use rustc_hir::intravisit::{self, Visitor};
use rustc_hir::{Body, Closure, Expr, ExprKind, FnRetTy, HirId, Local, LocalSource};
use rustc_middle::hir::nested_filter;
use rustc_middle::infer::unify_key::{ConstVariableOrigin, ConstVariableOriginKind};
use rustc_middle::infer::unify_key::{
ConstVariableOrigin, ConstVariableOriginKind, ConstVariableValue,
};
use rustc_middle::ty::adjustment::{Adjust, Adjustment, AutoBorrow};
use rustc_middle::ty::print::{FmtPrinter, PrettyPrinter, Print, Printer};
use rustc_middle::ty::{self, InferConst};
@ -178,17 +180,23 @@ fn fmt_printer<'a, 'tcx>(infcx: &'a InferCtxt<'tcx>, ns: Namespace) -> FmtPrinte
}
};
printer.ty_infer_name_resolver = Some(Box::new(ty_getter));
let const_getter = move |ct_vid| {
if infcx.probe_const_var(ct_vid).is_ok() {
let const_getter = move |ct_vid| match infcx
.inner
.borrow_mut()
.const_unification_table()
.probe_value(ct_vid)
{
ConstVariableValue::Known { value: _ } => {
warn!("resolved const var in error message");
}
if let ConstVariableOriginKind::ConstParameterDefinition(name, _) =
infcx.inner.borrow_mut().const_unification_table().probe_value(ct_vid).origin.kind
{
return Some(name);
} else {
None
}
ConstVariableValue::Unknown { origin, universe: _ } => {
if let ConstVariableOriginKind::ConstParameterDefinition(name, _) = origin.kind {
return Some(name);
} else {
None
}
}
};
printer.const_infer_name_resolver = Some(Box::new(const_getter));
printer
@ -303,7 +311,12 @@ impl<'tcx> InferCtxt<'tcx> {
GenericArgKind::Const(ct) => {
if let ty::ConstKind::Infer(InferConst::Var(vid)) = ct.kind() {
let origin =
self.inner.borrow_mut().const_unification_table().probe_value(vid).origin;
match self.inner.borrow_mut().const_unification_table().probe_value(vid) {
ConstVariableValue::Known { value } => {
bug!("resolved infer var: {vid:?} {value}")
}
ConstVariableValue::Unknown { origin, universe: _ } => origin,
};
if let ConstVariableOriginKind::ConstParameterDefinition(name, def_id) =
origin.kind
{

10
compiler/rustc_infer/src/infer/freshen.rs
View File

@ -146,14 +146,8 @@ impl<'a, 'tcx> TypeFolder<TyCtxt<'tcx>> for TypeFreshener<'a, 'tcx> {
fn fold_const(&mut self, ct: ty::Const<'tcx>) -> ty::Const<'tcx> {
match ct.kind() {
ty::ConstKind::Infer(ty::InferConst::Var(v)) => {
let opt_ct = self
.infcx
.inner
.borrow_mut()
.const_unification_table()
.probe_value(v)
.val
.known();
let opt_ct =
self.infcx.inner.borrow_mut().const_unification_table().probe_value(v).known();
self.freshen_const(opt_ct, ty::InferConst::Var(v), ty::InferConst::Fresh, ct.ty())
}
ty::ConstKind::Infer(ty::InferConst::EffectVar(v)) => {

11
compiler/rustc_infer/src/infer/fudge.rs
View File

@ -1,4 +1,4 @@
use rustc_middle::infer::unify_key::ConstVidKey;
use rustc_middle::infer::unify_key::{ConstVariableOriginKind, ConstVariableValue, ConstVidKey};
use rustc_middle::ty::fold::{TypeFoldable, TypeFolder, TypeSuperFoldable};
use rustc_middle::ty::{self, ConstVid, FloatVid, IntVid, RegionVid, Ty, TyCtxt, TyVid};
@ -28,10 +28,17 @@ fn const_vars_since_snapshot<'tcx>(
snapshot_var_len: usize,
) -> (Range<ConstVid>, Vec<ConstVariableOrigin>) {
let range = vars_since_snapshot(table, snapshot_var_len);
(
range.start.vid..range.end.vid,
(range.start.index()..range.end.index())
.map(|index| table.probe_value(ConstVid::from_u32(index)).origin)
.map(|index| match table.probe_value(ConstVid::from_u32(index)) {
ConstVariableValue::Known { value: _ } => ConstVariableOrigin {
kind: ConstVariableOriginKind::MiscVariable,
span: rustc_span::DUMMY_SP,
},
ConstVariableValue::Unknown { origin, universe: _ } => origin,
})
.collect(),
)
}

21
compiler/rustc_infer/src/infer/mod.rs
View File

@ -23,8 +23,8 @@ use rustc_data_structures::unify as ut;
use rustc_errors::{DiagCtxt, DiagnosticBuilder, ErrorGuaranteed};
use rustc_hir::def_id::{DefId, LocalDefId};
use rustc_middle::infer::canonical::{Canonical, CanonicalVarValues};
use rustc_middle::infer::unify_key::{ConstVarValue, ConstVariableValue, EffectVarValue};
use rustc_middle::infer::unify_key::{ConstVariableOrigin, ConstVariableOriginKind, ToType};
use rustc_middle::infer::unify_key::{ConstVariableValue, EffectVarValue};
use rustc_middle::mir::interpret::{ErrorHandled, EvalToValTreeResult};
use rustc_middle::mir::ConstraintCategory;
use rustc_middle::traits::{select, DefiningAnchor};
@ -1086,7 +1086,7 @@ impl<'tcx> InferCtxt<'tcx> {
.inner
.borrow_mut()
.const_unification_table()
.new_key(ConstVarValue { origin, val: ConstVariableValue::Unknown { universe } })
.new_key(ConstVariableValue::Unknown { origin, universe })
.vid;
ty::Const::new_var(self.tcx, vid, ty)
}
@ -1095,10 +1095,7 @@ impl<'tcx> InferCtxt<'tcx> {
self.inner
.borrow_mut()
.const_unification_table()
.new_key(ConstVarValue {
origin,
val: ConstVariableValue::Unknown { universe: self.universe() },
})
.new_key(ConstVariableValue::Unknown { origin, universe: self.universe() })
.vid
}
@ -1217,10 +1214,7 @@ impl<'tcx> InferCtxt<'tcx> {
.inner
.borrow_mut()
.const_unification_table()
.new_key(ConstVarValue {
origin,
val: ConstVariableValue::Unknown { universe: self.universe() },
})
.new_key(ConstVariableValue::Unknown { origin, universe: self.universe() })
.vid;
ty::Const::new_var(
self.tcx,
@ -1410,9 +1404,9 @@ impl<'tcx> InferCtxt<'tcx> {
}
pub fn probe_const_var(&self, vid: ty::ConstVid) -> Result<ty::Const<'tcx>, ty::UniverseIndex> {
match self.inner.borrow_mut().const_unification_table().probe_value(vid).val {
match self.inner.borrow_mut().const_unification_table().probe_value(vid) {
ConstVariableValue::Known { value } => Ok(value),
ConstVariableValue::Unknown { universe } => Err(universe),
ConstVariableValue::Unknown { origin: _, universe } => Err(universe),
}
}
@ -1709,7 +1703,7 @@ impl<'tcx> InferCtxt<'tcx> {
// `ty::ConstKind::Infer(ty::InferConst::Var(v))`.
//
// Not `inlined_probe_value(v)` because this call site is colder.
match self.inner.borrow_mut().const_unification_table().probe_value(v).val {
match self.inner.borrow_mut().const_unification_table().probe_value(v) {
ConstVariableValue::Unknown { .. } => false,
ConstVariableValue::Known { .. } => true,
}
@ -1876,7 +1870,6 @@ impl<'a, 'tcx> TypeFolder<TyCtxt<'tcx>> for ShallowResolver<'a, 'tcx> {
.borrow_mut()
.const_unification_table()
.probe_value(vid)
.val
.known()
.unwrap_or(ct),
ty::ConstKind::Infer(InferConst::EffectVar(vid)) => self

26
compiler/rustc_infer/src/infer/relate/combine.rs
View File

@ -30,14 +30,12 @@ use super::sub::Sub;
use crate::infer::{DefineOpaqueTypes, InferCtxt, TypeTrace};
use crate::traits::{Obligation, PredicateObligations};
use rustc_middle::infer::canonical::OriginalQueryValues;
use rustc_middle::infer::unify_key::{ConstVarValue, ConstVariableValue, EffectVarValue};
use rustc_middle::infer::unify_key::{ConstVariableOrigin, ConstVariableOriginKind};
use rustc_middle::infer::unify_key::{ConstVariableValue, EffectVarValue};
use rustc_middle::ty::error::{ExpectedFound, TypeError};
use rustc_middle::ty::relate::{RelateResult, TypeRelation};
use rustc_middle::ty::{self, InferConst, ToPredicate, Ty, TyCtxt, TypeVisitableExt};
use rustc_middle::ty::{AliasRelationDirection, TyVar};
use rustc_middle::ty::{IntType, UintType};
use rustc_span::DUMMY_SP;
#[derive(Clone)]
pub struct CombineFields<'infcx, 'tcx> {
@ -328,8 +326,12 @@ impl<'tcx> InferCtxt<'tcx> {
ct: ty::Const<'tcx>,
param_env: ty::ParamEnv<'tcx>,
) -> RelateResult<'tcx, ty::Const<'tcx>> {
let span =
self.inner.borrow_mut().const_unification_table().probe_value(target_vid).origin.span;
let span = match self.inner.borrow_mut().const_unification_table().probe_value(target_vid) {
ConstVariableValue::Known { value } => {
bug!("instantiating a known const var: {target_vid:?} {value} {ct}")
}
ConstVariableValue::Unknown { origin, universe: _ } => origin.span,
};
// FIXME(generic_const_exprs): Occurs check failures for unevaluated
// constants and generic expressions are not yet handled correctly.
let Generalization { value_may_be_infer: value, needs_wf: _ } = generalize::generalize(
@ -340,16 +342,10 @@ impl<'tcx> InferCtxt<'tcx> {
ty::Variance::Invariant,
)?;
self.inner.borrow_mut().const_unification_table().union_value(
target_vid,
ConstVarValue {
origin: ConstVariableOrigin {
kind: ConstVariableOriginKind::ConstInference,
span: DUMMY_SP,
},
val: ConstVariableValue::Known { value },
},
);
self.inner
.borrow_mut()
.const_unification_table()
.union_value(target_vid, ConstVariableValue::Known { value });
Ok(value)
}

15
compiler/rustc_infer/src/infer/relate/generalize.rs
View File

@ -3,7 +3,7 @@ use std::mem;
use rustc_data_structures::sso::SsoHashMap;
use rustc_data_structures::stack::ensure_sufficient_stack;
use rustc_hir::def_id::DefId;
use rustc_middle::infer::unify_key::{ConstVarValue, ConstVariableValue};
use rustc_middle::infer::unify_key::ConstVariableValue;
use rustc_middle::ty::error::TypeError;
use rustc_middle::ty::relate::{self, Relate, RelateResult, TypeRelation};
use rustc_middle::ty::visit::MaxUniverse;
@ -431,22 +431,19 @@ where
let mut inner = self.infcx.inner.borrow_mut();
let variable_table = &mut inner.const_unification_table();
let var_value = variable_table.probe_value(vid);
match var_value.val {
match variable_table.probe_value(vid) {
ConstVariableValue::Known { value: u } => {
drop(inner);
self.relate(u, u)
}
ConstVariableValue::Unknown { universe } => {
ConstVariableValue::Unknown { origin, universe } => {
if self.for_universe.can_name(universe) {
Ok(c)
} else {
let new_var_id = variable_table
.new_key(ConstVarValue {
origin: var_value.origin,
val: ConstVariableValue::Unknown {
universe: self.for_universe,
},
.new_key(ConstVariableValue::Unknown {
origin,
universe: self.for_universe,
})
.vid;
Ok(ty::Const::new_var(self.tcx(), new_var_id, c.ty()))

90
compiler/rustc_infer/src/infer/resolve.rs
View File

@ -1,12 +1,8 @@
use super::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
use super::{FixupError, FixupResult, InferCtxt, Span};
use rustc_middle::infer::unify_key::{ConstVariableOrigin, ConstVariableOriginKind};
use super::{FixupError, FixupResult, InferCtxt};
use rustc_middle::ty::fold::{FallibleTypeFolder, TypeFolder, TypeSuperFoldable};
use rustc_middle::ty::visit::{TypeSuperVisitable, TypeVisitableExt, TypeVisitor};
use rustc_middle::ty::visit::TypeVisitableExt;
use rustc_middle::ty::{self, Const, InferConst, Ty, TyCtxt, TypeFoldable};
use std::ops::ControlFlow;
///////////////////////////////////////////////////////////////////////////
// OPPORTUNISTIC VAR RESOLVER
@ -104,88 +100,6 @@ impl<'a, 'tcx> TypeFolder<TyCtxt<'tcx>> for OpportunisticRegionResolver<'a, 'tcx
}
}
///////////////////////////////////////////////////////////////////////////
// UNRESOLVED TYPE FINDER
/// The unresolved type **finder** walks a type searching for
/// type variables that don't yet have a value. The first unresolved type is stored.
/// It does not construct the fully resolved type (which might
/// involve some hashing and so forth).
pub struct UnresolvedTypeOrConstFinder<'a, 'tcx> {
infcx: &'a InferCtxt<'tcx>,
}
impl<'a, 'tcx> UnresolvedTypeOrConstFinder<'a, 'tcx> {
pub fn new(infcx: &'a InferCtxt<'tcx>) -> Self {
UnresolvedTypeOrConstFinder { infcx }
}
}
impl<'a, 'tcx> TypeVisitor<TyCtxt<'tcx>> for UnresolvedTypeOrConstFinder<'a, 'tcx> {
type BreakTy = (ty::Term<'tcx>, Option<Span>);
fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
let t = self.infcx.shallow_resolve(t);
if let ty::Infer(infer_ty) = *t.kind() {
// Since we called `shallow_resolve` above, this must
// be an (as yet...) unresolved inference variable.
let ty_var_span = if let ty::TyVar(ty_vid) = infer_ty {
let mut inner = self.infcx.inner.borrow_mut();
let ty_vars = &inner.type_variables();
if let TypeVariableOrigin {
kind: TypeVariableOriginKind::TypeParameterDefinition(_, _),
span,
} = ty_vars.var_origin(ty_vid)
{
Some(span)
} else {
None
}
} else {
None
};
ControlFlow::Break((t.into(), ty_var_span))
} else if !t.has_non_region_infer() {
// All const/type variables in inference types must already be resolved,
// no need to visit the contents.
ControlFlow::Continue(())
} else {
// Otherwise, keep visiting.
t.super_visit_with(self)
}
}
fn visit_const(&mut self, ct: ty::Const<'tcx>) -> ControlFlow<Self::BreakTy> {
let ct = self.infcx.shallow_resolve(ct);
if let ty::ConstKind::Infer(i) = ct.kind() {
// Since we called `shallow_resolve` above, this must
// be an (as yet...) unresolved inference variable.
let ct_var_span = if let ty::InferConst::Var(vid) = i {
let mut inner = self.infcx.inner.borrow_mut();
let ct_vars = &mut inner.const_unification_table();
if let ConstVariableOrigin {
span,
kind: ConstVariableOriginKind::ConstParameterDefinition(_, _),
} = ct_vars.probe_value(vid).origin
{
Some(span)
} else {
None
}
} else {
None
};
ControlFlow::Break((ct.into(), ct_var_span))
} else if !ct.has_non_region_infer() {
// All const/type variables in inference types must already be resolved,
// no need to visit the contents.
ControlFlow::Continue(())
} else {
// Otherwise, keep visiting.
ct.super_visit_with(self)
}
}
}
///////////////////////////////////////////////////////////////////////////
// FULL TYPE RESOLUTION

17
compiler/rustc_lexer/src/unescape.rs
View File

@ -59,6 +59,9 @@ pub enum EscapeError {
/// Non-ascii character in byte literal, byte string literal, or raw byte string literal.
NonAsciiCharInByte,
// `\0` in a C string literal.
NulInCStr,
/// After a line ending with '\', the next line contains whitespace
/// characters that are not skipped.
UnskippedWhitespaceWarning,
@ -122,10 +125,20 @@ where
{
match mode {
CStr => {
unescape_non_raw_common(src, mode, callback);
unescape_non_raw_common(src, mode, &mut |r, mut result| {
if let Ok(CStrUnit::Byte(0) | CStrUnit::Char('\0')) = result {
result = Err(EscapeError::NulInCStr);
}
callback(r, result)
});
}
RawCStr => {
check_raw_common(src, mode, &mut |r, result| callback(r, result.map(CStrUnit::Char)));
check_raw_common(src, mode, &mut |r, mut result| {
if let Ok('\0') = result {
result = Err(EscapeError::NulInCStr);
}
callback(r, result.map(CStrUnit::Char))
});
}
Char | Byte | Str | RawStr | ByteStr | RawByteStr => unreachable!(),
}

2
compiler/rustc_lint/src/unused.rs
View File

@ -1166,7 +1166,7 @@ impl EarlyLintPass for UnusedParens {
// Do not lint on `(..)` as that will result in the other arms being useless.
Paren(_)
// The other cases do not contain sub-patterns.
| Wild | Never | Rest | Lit(..) | MacCall(..) | Range(..) | Ident(.., None) | Path(..) => {},
| Wild | Never | Rest | Lit(..) | MacCall(..) | Range(..) | Ident(.., None) | Path(..) | Err(_) => {},
// These are list-like patterns; parens can always be removed.
TupleStruct(_, _, ps) | Tuple(ps) | Slice(ps) | Or(ps) => for p in ps {
self.check_unused_parens_pat(cx, p, false, false, keep_space);

29
compiler/rustc_middle/src/infer/unify_key.rs
View File

@ -120,7 +120,7 @@ pub enum ConstVariableOriginKind {
#[derive(Copy, Clone, Debug)]
pub enum ConstVariableValue<'tcx> {
Known { value: ty::Const<'tcx> },
Unknown { universe: ty::UniverseIndex },
Unknown { origin: ConstVariableOrigin, universe: ty::UniverseIndex },
}
impl<'tcx> ConstVariableValue<'tcx> {
@ -134,12 +134,6 @@ impl<'tcx> ConstVariableValue<'tcx> {
}
}
#[derive(Copy, Clone, Debug)]
pub struct ConstVarValue<'tcx> {
pub origin: ConstVariableOrigin,
pub val: ConstVariableValue<'tcx>,
}
#[derive(PartialEq, Copy, Clone, Debug)]
pub struct ConstVidKey<'tcx> {
pub vid: ty::ConstVid,
@ -153,7 +147,7 @@ impl<'tcx> From<ty::ConstVid> for ConstVidKey<'tcx> {
}
impl<'tcx> UnifyKey for ConstVidKey<'tcx> {
type Value = ConstVarValue<'tcx>;
type Value = ConstVariableValue<'tcx>;
#[inline]
fn index(&self) -> u32 {
self.vid.as_u32()
@ -167,23 +161,23 @@ impl<'tcx> UnifyKey for ConstVidKey<'tcx> {
}
}
impl<'tcx> UnifyValue for ConstVarValue<'tcx> {
impl<'tcx> UnifyValue for ConstVariableValue<'tcx> {
type Error = NoError;
fn unify_values(&value1: &Self, &value2: &Self) -> Result<Self, Self::Error> {
Ok(match (value1.val, value2.val) {
match (value1, value2) {
(ConstVariableValue::Known { .. }, ConstVariableValue::Known { .. }) => {
bug!("equating two const variables, both of which have known values")
}
// If one side is known, prefer that one.
(ConstVariableValue::Known { .. }, ConstVariableValue::Unknown { .. }) => value1,
(ConstVariableValue::Unknown { .. }, ConstVariableValue::Known { .. }) => value2,
(ConstVariableValue::Known { .. }, ConstVariableValue::Unknown { .. }) => Ok(value1),
(ConstVariableValue::Unknown { .. }, ConstVariableValue::Known { .. }) => Ok(value2),
// If both sides are *unknown*, it hardly matters, does it?
(
ConstVariableValue::Unknown { universe: universe1 },
ConstVariableValue::Unknown { universe: universe2 },
ConstVariableValue::Unknown { origin, universe: universe1 },
ConstVariableValue::Unknown { origin: _, universe: universe2 },
) => {
// If we unify two unbound variables, ?T and ?U, then whatever
// value they wind up taking (which must be the same value) must
@ -191,12 +185,9 @@ impl<'tcx> UnifyValue for ConstVarValue<'tcx> {
// universe is the minimum of the two universes, because that is
// the one which contains the fewest names in scope.
let universe = cmp::min(universe1, universe2);
ConstVarValue {
val: ConstVariableValue::Unknown { universe },
origin: value1.origin,
}
Ok(ConstVariableValue::Unknown { origin, universe })
}
})
}
}
}

60
compiler/rustc_middle/src/mir/pretty.rs
View File

@ -142,15 +142,17 @@ fn dump_matched_mir_node<'tcx, F>(
}
}
/// Returns the file basename portion (without extension) of a filename path
/// where we should dump a MIR representation output files.
fn dump_file_basename<'tcx>(
/// Returns the path to the filename where we should dump a given MIR.
/// Also used by other bits of code (e.g., NLL inference) that dump
/// graphviz data or other things.
fn dump_path<'tcx>(
tcx: TyCtxt<'tcx>,
extension: &str,
pass_num: bool,
pass_name: &str,
disambiguator: &dyn Display,
body: &Body<'tcx>,
) -> String {
) -> PathBuf {
let source = body.source;
let promotion_id = match source.promoted {
Some(id) => format!("-{id:?}"),
@ -186,45 +188,18 @@ fn dump_file_basename<'tcx>(
_ => String::new(),
};
format!(
"{crate_name}.{item_name}{shim_disambiguator}{promotion_id}{pass_num}.{pass_name}.{disambiguator}",
)
}
/// Returns the path to the filename where we should dump a given MIR.
/// Also used by other bits of code (e.g., NLL inference) that dump
/// graphviz data or other things.
fn dump_path(tcx: TyCtxt<'_>, basename: &str, extension: &str) -> PathBuf {
let mut file_path = PathBuf::new();
file_path.push(Path::new(&tcx.sess.opts.unstable_opts.dump_mir_dir));
let file_name = format!("{basename}.{extension}",);
let file_name = format!(
"{crate_name}.{item_name}{shim_disambiguator}{promotion_id}{pass_num}.{pass_name}.{disambiguator}.{extension}",
);
file_path.push(&file_name);
file_path
}
/// Attempts to open the MIR dump file with the given name and extension.
fn create_dump_file_with_basename(
tcx: TyCtxt<'_>,
file_basename: &str,
extension: &str,
) -> io::Result<io::BufWriter<fs::File>> {
let file_path = dump_path(tcx, file_basename, extension);
if let Some(parent) = file_path.parent() {
fs::create_dir_all(parent).map_err(|e| {
io::Error::new(
e.kind(),
format!("IO error creating MIR dump directory: {parent:?}; {e}"),
)
})?;
}
Ok(io::BufWriter::new(fs::File::create(&file_path).map_err(|e| {
io::Error::new(e.kind(), format!("IO error creating MIR dump file: {file_path:?}; {e}"))
})?))
}
/// Attempts to open a file where we should dump a given MIR or other
/// bit of MIR-related data. Used by `mir-dump`, but also by other
/// bits of code (e.g., NLL inference) that dump graphviz data or
@ -237,11 +212,18 @@ pub fn create_dump_file<'tcx>(
disambiguator: &dyn Display,
body: &Body<'tcx>,
) -> io::Result<io::BufWriter<fs::File>> {
create_dump_file_with_basename(
tcx,
&dump_file_basename(tcx, pass_num, pass_name, disambiguator, body),
extension,
)
let file_path = dump_path(tcx, extension, pass_num, pass_name, disambiguator, body);
if let Some(parent) = file_path.parent() {
fs::create_dir_all(parent).map_err(|e| {
io::Error::new(
e.kind(),
format!("IO error creating MIR dump directory: {parent:?}; {e}"),
)
})?;
}
Ok(io::BufWriter::new(fs::File::create(&file_path).map_err(|e| {
io::Error::new(e.kind(), format!("IO error creating MIR dump file: {file_path:?}; {e}"))
})?))
}
///////////////////////////////////////////////////////////////////////////

2
compiler/rustc_mir_build/src/thir/pattern/mod.rs
View File

@ -345,6 +345,8 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> {
}
hir::PatKind::Or(pats) => PatKind::Or { pats: self.lower_patterns(pats) },
hir::PatKind::Err(guar) => PatKind::Error(guar),
};
Box::new(Pat { span, ty, kind })

2
compiler/rustc_parse/messages.ftl
View File

@ -616,6 +616,8 @@ parse_note_mut_pattern_usage = `mut` may be followed by `variable` and `variable
parse_note_pattern_alternatives_use_single_vert = alternatives in or-patterns are separated with `|`, not `||`
parse_nul_in_c_str = null characters in C string literals are not supported
parse_or_pattern_not_allowed_in_fn_parameters = top-level or-patterns are not allowed in function parameters
parse_or_pattern_not_allowed_in_let_binding = top-level or-patterns are not allowed in `let` bindings
parse_out_of_range_hex_escape = out of range hex escape

5
compiler/rustc_parse/src/errors.rs
View File

@ -2163,6 +2163,11 @@ pub enum UnescapeError {
#[subdiagnostic]
suggestion: MoreThanOneCharSugg,
},
#[diag(parse_nul_in_c_str)]
NulInCStr {
#[primary_span]
span: Span,
},
}
#[derive(Subdiagnostic)]

3
compiler/rustc_parse/src/lexer/unescape_error_reporting.rs
View File

@ -262,6 +262,9 @@ pub(crate) fn emit_unescape_error(
EscapeError::LoneSlash => {
dcx.emit_err(UnescapeError::LoneSlash(err_span));
}
EscapeError::NulInCStr => {
dcx.emit_err(UnescapeError::NulInCStr { span: err_span });
}
EscapeError::UnskippedWhitespaceWarning => {
let (c, char_span) = last_char();
dcx.emit_warn(UnescapeError::UnskippedWhitespace {

6
compiler/rustc_passes/src/hir_stats.rs
View File

@ -303,7 +303,8 @@ impl<'v> hir_visit::Visitor<'v> for StatCollector<'v> {
Ref,
Lit,
Range,
Slice
Slice,
Err
]
);
hir_visit::walk_pat(self, p)
@ -576,7 +577,8 @@ impl<'v> ast_visit::Visitor<'v> for StatCollector<'v> {
Rest,
Never,
Paren,
MacCall
MacCall,
Err
]
);
ast_visit::walk_pat(self, p)

2
compiler/rustc_session/messages.ftl
View File

@ -75,8 +75,6 @@ session_not_circumvent_feature = `-Zunleash-the-miri-inside-of-you` may not be u
session_not_supported = not supported
session_nul_in_c_str = null characters in C string literals are not supported
session_octal_float_literal_not_supported = octal float literal is not supported
session_optimization_fuel_exhausted = optimization-fuel-exhausted: {$msg}

15
compiler/rustc_session/src/errors.rs
View File

@ -6,7 +6,7 @@ use rustc_errors::{
error_code, DiagCtxt, DiagnosticBuilder, DiagnosticMessage, IntoDiagnostic, Level, MultiSpan,
};
use rustc_macros::Diagnostic;
use rustc_span::{BytePos, Span, Symbol};
use rustc_span::{Span, Symbol};
use rustc_target::spec::{SplitDebuginfo, StackProtector, TargetTriple};
use crate::parse::ParseSess;
@ -346,13 +346,6 @@ pub(crate) struct BinaryFloatLiteralNotSupported {
pub span: Span,
}
#[derive(Diagnostic)]
#[diag(session_nul_in_c_str)]
pub(crate) struct NulInCStr {
#[primary_span]
pub span: Span,
}
pub fn report_lit_error(sess: &ParseSess, err: LitError, lit: token::Lit, span: Span) {
// Checks if `s` looks like i32 or u1234 etc.
fn looks_like_width_suffix(first_chars: &[char], s: &str) -> bool {
@ -432,12 +425,6 @@ pub fn report_lit_error(sess: &ParseSess, err: LitError, lit: token::Lit, span:
};
dcx.emit_err(IntLiteralTooLarge { span, limit });
}
LitError::NulInCStr(range) => {
let lo = BytePos(span.lo().0 + range.start as u32 + 2);
let hi = BytePos(span.lo().0 + range.end as u32 + 2);
let span = span.with_lo(lo).with_hi(hi);
dcx.emit_err(NulInCStr { span });
}
}
}

124
compiler/rustc_smir/src/rustc_internal/mod.rs
View File

@ -190,35 +190,120 @@ where
stable_mir::compiler_interface::run(&tables, || init(&tables, f))
}
/// Instantiate and run the compiler with the provided arguments and callback.
///
/// The callback will be invoked after the compiler ran all its analyses, but before code generation.
/// Note that this macro accepts two different formats for the callback:
/// 1. An ident that resolves to a function that accepts no argument and returns `ControlFlow<B, C>`
/// ```ignore(needs-extern-crate)
/// # extern crate rustc_driver;
/// # extern crate rustc_interface;
/// # #[macro_use]
/// # extern crate rustc_smir;
/// # extern crate stable_mir;
/// #
/// # fn main() {
/// # use std::ops::ControlFlow;
/// # use stable_mir::CompilerError;
/// fn analyze_code() -> ControlFlow<(), ()> {
/// // Your code goes in here.
/// # ControlFlow::Continue(())
/// }
/// # let args = vec!["--verbose".to_string()];
/// let result = run!(args, analyze_code);
/// # assert_eq!(result, Err(CompilerError::Skipped))
/// # }
/// ```
/// 2. A closure expression:
/// ```ignore(needs-extern-crate)
/// # extern crate rustc_driver;
/// # extern crate rustc_interface;
/// # #[macro_use]
/// # extern crate rustc_smir;
/// # extern crate stable_mir;
/// #
/// # fn main() {
/// # use std::ops::ControlFlow;
/// # use stable_mir::CompilerError;
/// fn analyze_code(extra_args: Vec<String>) -> ControlFlow<(), ()> {
/// # let _ = extra_args;
/// // Your code goes in here.
/// # ControlFlow::Continue(())
/// }
/// # let args = vec!["--verbose".to_string()];
/// # let extra_args = vec![];
/// let result = run!(args, || analyze_code(extra_args));
/// # assert_eq!(result, Err(CompilerError::Skipped))
/// # }
/// ```
#[macro_export]
macro_rules! run {
($args:expr, $callback:expr) => {
run!($args, tcx, $callback)
($args:expr, $callback_fn:ident) => {
run_driver!($args, || $callback_fn())
};
($args:expr, $tcx:ident, $callback:expr) => {{
($args:expr, $callback:expr) => {
run_driver!($args, $callback)
};
}
/// Instantiate and run the compiler with the provided arguments and callback.
///
/// This is similar to `run` but it invokes the callback with the compiler's `TyCtxt`,
/// which can be used to invoke internal APIs.
#[macro_export]
macro_rules! run_with_tcx {
($args:expr, $callback_fn:ident) => {
run_driver!($args, |tcx| $callback_fn(tcx), with_tcx)
};
($args:expr, $callback:expr) => {
run_driver!($args, $callback, with_tcx)
};
}
/// Optionally include an ident. This is needed due to macro hygiene.
#[macro_export]
#[doc(hidden)]
macro_rules! optional {
(with_tcx $ident:ident) => {
$ident
};
}
/// Prefer using [run!] and [run_with_tcx] instead.
///
/// This macro implements the instantiation of a StableMIR driver, and it will invoke
/// the given callback after the compiler analyses.
///
/// The third argument determines whether the callback requires `tcx` as an argument.
#[macro_export]
#[doc(hidden)]
macro_rules! run_driver {
($args:expr, $callback:expr $(, $with_tcx:ident)?) => {{
use rustc_driver::{Callbacks, Compilation, RunCompiler};
use rustc_interface::{interface, Queries};
use stable_mir::CompilerError;
use std::ops::ControlFlow;
pub struct StableMir<B = (), C = ()>
pub struct StableMir<B = (), C = (), F = fn($(optional!($with_tcx TyCtxt))?) -> ControlFlow<B, C>>
where
B: Send,
C: Send,
F: FnOnce($(optional!($with_tcx TyCtxt))?) -> ControlFlow<B, C> + Send,
{
args: Vec<String>,
callback: fn(TyCtxt<'_>) -> ControlFlow<B, C>,
callback: Option<F>,
result: Option<ControlFlow<B, C>>,
}
impl<B, C> StableMir<B, C>
impl<B, C, F> StableMir<B, C, F>
where
B: Send,
C: Send,
F: FnOnce($(optional!($with_tcx TyCtxt))?) -> ControlFlow<B, C> + Send,
{
/// Creates a new `StableMir` instance, with given test_function and arguments.
pub fn new(args: Vec<String>, callback: fn(TyCtxt<'_>) -> ControlFlow<B, C>) -> Self {
StableMir { args, callback, result: None }
pub fn new(args: Vec<String>, callback: F) -> Self {
StableMir { args, callback: Some(callback), result: None }
}
/// Runs the compiler against given target and tests it with `test_function`
@ -238,10 +323,11 @@ macro_rules! run {
}
}
impl<B, C> Callbacks for StableMir<B, C>
impl<B, C, F> Callbacks for StableMir<B, C, F>
where
B: Send,
C: Send,
F: FnOnce($(optional!($with_tcx TyCtxt))?) -> ControlFlow<B, C> + Send,
{
/// Called after analysis. Return value instructs the compiler whether to
/// continue the compilation afterwards (defaults to `Compilation::Continue`)
@ -251,20 +337,24 @@ macro_rules! run {
queries: &'tcx Queries<'tcx>,
) -> Compilation {
queries.global_ctxt().unwrap().enter(|tcx| {
rustc_internal::run(tcx, || {
self.result = Some((self.callback)(tcx));
})
.unwrap();
if self.result.as_ref().is_some_and(|val| val.is_continue()) {
Compilation::Continue
if let Some(callback) = self.callback.take() {
rustc_internal::run(tcx, || {
self.result = Some(callback($(optional!($with_tcx tcx))?));
})
.unwrap();
if self.result.as_ref().is_some_and(|val| val.is_continue()) {
Compilation::Continue
} else {
Compilation::Stop
}
} else {
Compilation::Stop
Compilation::Continue
}
})
}
}
StableMir::new($args, |$tcx| $callback).run()
StableMir::new($args, $callback).run()
}};
}

4
src/librustdoc/clean/utils.rs
View File

@ -312,7 +312,9 @@ pub(crate) fn name_from_pat(p: &hir::Pat<'_>) -> Symbol {
Symbol::intern(&match p.kind {
// FIXME(never_patterns): does this make sense?
PatKind::Wild | PatKind::Never | PatKind::Struct(..) => return kw::Underscore,
PatKind::Wild | PatKind::Err(_) | PatKind::Never | PatKind::Struct(..) => {
return kw::Underscore;
}
PatKind::Binding(_, _, ident, _) => return ident.name,
PatKind::TupleStruct(ref p, ..) | PatKind::Path(ref p) => qpath_to_string(p),
PatKind::Or(pats) => {

98
src/tools/clippy/clippy_lints/src/async_yields_async.rs
View File

@ -45,50 +45,72 @@ declare_lint_pass!(AsyncYieldsAsync => [ASYNC_YIELDS_ASYNC]);
impl<'tcx> LateLintPass<'tcx> for AsyncYieldsAsync {
fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) {
// For functions, with explicitly defined types, don't warn.
// XXXkhuey maybe we should?
if let ExprKind::Closure(Closure {
kind:
ClosureKind::Coroutine(CoroutineKind::Desugared(
CoroutineDesugaring::Async,
CoroutineSource::Block | CoroutineSource::Closure,
)),
let ExprKind::Closure(Closure {
kind: ClosureKind::Coroutine(CoroutineKind::Desugared(CoroutineDesugaring::Async, kind)),
body: body_id,
..
}) = expr.kind
{
if let Some(future_trait_def_id) = cx.tcx.lang_items().future_trait() {
let typeck_results = cx.tcx.typeck_body(*body_id);
let body = cx.tcx.hir().body(*body_id);
let expr_ty = typeck_results.expr_ty(body.value);
else {
return;
};
if implements_trait(cx, expr_ty, future_trait_def_id, &[]) {
let return_expr_span = match &body.value.kind {
// XXXkhuey there has to be a better way.
ExprKind::Block(block, _) => block.expr.map(|e| e.span),
ExprKind::Path(QPath::Resolved(_, path)) => Some(path.span),
_ => None,
};
if let Some(return_expr_span) = return_expr_span {
span_lint_hir_and_then(
cx,
ASYNC_YIELDS_ASYNC,
body.value.hir_id,
let body_expr = match kind {
CoroutineSource::Fn => {
// For functions, with explicitly defined types, don't warn.
// XXXkhuey maybe we should?
return;
},
CoroutineSource::Block => cx.tcx.hir().body(*body_id).value,
CoroutineSource::Closure => {
// Like `async fn`, async closures are wrapped in an additional block
// to move all of the closure's arguments into the future.
let async_closure_body = cx.tcx.hir().body(*body_id).value;
let ExprKind::Block(block, _) = async_closure_body.kind else {
return;
};
let Some(block_expr) = block.expr else {
return;
};
let ExprKind::DropTemps(body_expr) = block_expr.kind else {
return;
};
body_expr
},
};
let Some(future_trait_def_id) = cx.tcx.lang_items().future_trait() else {
return;
};
let typeck_results = cx.tcx.typeck_body(*body_id);
let expr_ty = typeck_results.expr_ty(body_expr);
if implements_trait(cx, expr_ty, future_trait_def_id, &[]) {
let return_expr_span = match &body_expr.kind {
// XXXkhuey there has to be a better way.
ExprKind::Block(block, _) => block.expr.map(|e| e.span),
ExprKind::Path(QPath::Resolved(_, path)) => Some(path.span),
_ => None,
};
if let Some(return_expr_span) = return_expr_span {
span_lint_hir_and_then(
cx,
ASYNC_YIELDS_ASYNC,
body_expr.hir_id,
return_expr_span,
"an async construct yields a type which is itself awaitable",
|db| {
db.span_label(body_expr.span, "outer async construct");
db.span_label(return_expr_span, "awaitable value not awaited");
db.span_suggestion(
return_expr_span,
"an async construct yields a type which is itself awaitable",
|db| {
db.span_label(body.value.span, "outer async construct");
db.span_label(return_expr_span, "awaitable value not awaited");
db.span_suggestion(
return_expr_span,
"consider awaiting this value",
format!("{}.await", snippet(cx, return_expr_span, "..")),
Applicability::MaybeIncorrect,
);
},
"consider awaiting this value",
format!("{}.await", snippet(cx, return_expr_span, "..")),
Applicability::MaybeIncorrect,
);
}
}
},
);
}
}
}

3
src/tools/clippy/clippy_lints/src/equatable_if_let.rs
View File

@ -51,7 +51,8 @@ fn unary_pattern(pat: &Pat<'_>) -> bool {
| PatKind::Binding(..)
| PatKind::Wild
| PatKind::Never
| PatKind::Or(_) => false,
| PatKind::Or(_)
| PatKind::Err(_) => false,
PatKind::Struct(_, a, etc) => !etc && a.iter().all(|x| unary_pattern(x.pat)),
PatKind::Tuple(a, etc) | PatKind::TupleStruct(_, a, etc) => etc.as_opt_usize().is_none() && array_rec(a),
PatKind::Ref(x, _) | PatKind::Box(x) => unary_pattern(x),

5
src/tools/clippy/clippy_lints/src/matches/match_same_arms.rs
View File

@ -11,7 +11,7 @@ use rustc_hir::{Arm, Expr, ExprKind, HirId, HirIdMap, HirIdMapEntry, HirIdSet, P
use rustc_lint::builtin::NON_EXHAUSTIVE_OMITTED_PATTERNS;
use rustc_lint::LateContext;
use rustc_middle::ty;
use rustc_span::Symbol;
use rustc_span::{ErrorGuaranteed, Symbol};
use super::MATCH_SAME_ARMS;
@ -167,6 +167,8 @@ enum NormalizedPat<'a> {
/// contains everything afterwards. Note that either side, or both sides, may contain zero
/// patterns.
Slice(&'a [Self], Option<&'a [Self]>),
/// A placeholder for a pattern that wasn't well formed in some way.
Err(ErrorGuaranteed),
}
#[derive(Clone, Copy)]
@ -329,6 +331,7 @@ impl<'a> NormalizedPat<'a> {
arena.alloc_from_iter(front.iter().map(|pat| Self::from_pat(cx, arena, pat))),
wild_pat.map(|_| &*arena.alloc_from_iter(back.iter().map(|pat| Self::from_pat(cx, arena, pat)))),
),
PatKind::Err(guar) => Self::Err(guar),
}
}

20
src/tools/clippy/clippy_lints/src/redundant_closure_call.rs
View File

@ -5,7 +5,9 @@ use clippy_utils::sugg::Sugg;
use rustc_errors::Applicability;
use rustc_hir as hir;
use rustc_hir::intravisit::{Visitor as HirVisitor, Visitor};
use rustc_hir::{intravisit as hir_visit, ClosureKind, CoroutineDesugaring, CoroutineKind, CoroutineSource, Node};
use rustc_hir::{
intravisit as hir_visit, ClosureKind, CoroutineDesugaring, CoroutineKind, CoroutineSource, ExprKind, Node,
};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::hir::nested_filter;
use rustc_middle::lint::in_external_macro;
@ -166,10 +168,22 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClosureCall {
if coroutine_kind.is_async()
&& let hir::ExprKind::Closure(closure) = body.kind
{
let async_closure_body = cx.tcx.hir().body(closure.body);
// Like `async fn`, async closures are wrapped in an additional block
// to move all of the closure's arguments into the future.
let async_closure_body = cx.tcx.hir().body(closure.body).value;
let ExprKind::Block(block, _) = async_closure_body.kind else {
return;
};
let Some(block_expr) = block.expr else {
return;
};
let ExprKind::DropTemps(body_expr) = block_expr.kind else {
return;
};
// `async x` is a syntax error, so it becomes `async { x }`
if !matches!(async_closure_body.value.kind, hir::ExprKind::Block(_, _)) {
if !matches!(body_expr.kind, hir::ExprKind::Block(_, _)) {
hint = hint.blockify();
}

2
src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs
View File

@ -226,7 +226,7 @@ fn transform_with_focus_on_idx(alternatives: &mut ThinVec<P<Pat>>, focus_idx: us
// Therefore they are not some form of constructor `C`,
// with which a pattern `C(p_0)` may be formed,
// which we would want to join with other `C(p_j)`s.
Ident(.., None) | Lit(_) | Wild | Never | Path(..) | Range(..) | Rest | MacCall(_)
Ident(.., None) | Lit(_) | Wild | Err(_) | Never | Path(..) | Range(..) | Rest | MacCall(_)
// Skip immutable refs, as grouping them saves few characters,
// and almost always requires adding parens (increasing noisiness).
// In the case of only two patterns, replacement adds net characters.

1
src/tools/clippy/clippy_lints/src/utils/author.rs
View File

@ -710,6 +710,7 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> {
self.slice(start, |pat| self.pat(pat));
self.slice(end, |pat| self.pat(pat));
},
PatKind::Err(_) => kind!("Err"),
}
}

2
src/tools/clippy/clippy_utils/src/hir_utils.rs
View File

@ -1007,7 +1007,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
}
e.hash(&mut self.s);
},
PatKind::Never | PatKind::Wild => {},
PatKind::Never | PatKind::Wild | PatKind::Err(_) => {},
}
}

1
src/tools/clippy/clippy_utils/src/lib.rs
View File

@ -1733,6 +1733,7 @@ pub fn is_refutable(cx: &LateContext<'_>, pat: &Pat<'_>) -> bool {
},
}
},
PatKind::Err(_) => true,
}
}

6
src/tools/clippy/tests/ui/author/blocks.stdout
View File

@ -48,7 +48,11 @@ if let ExprKind::Closure { capture_clause: CaptureBy::Value { .. }, fn_decl: fn_
&& expr2 = &cx.tcx.hir().body(body_id1).value
&& let ExprKind::Block(block, None) = expr2.kind
&& block.stmts.is_empty()
&& block.expr.is_none()
&& let Some(trailing_expr) = block.expr
&& let ExprKind::DropTemps(expr3) = trailing_expr.kind
&& let ExprKind::Block(block1, None) = expr3.kind
&& block1.stmts.is_empty()
&& block1.expr.is_none()
{
// report your lint here
}

1
src/tools/rust-analyzer/crates/parser/src/lexed_str.rs
View File

@ -369,6 +369,7 @@ fn error_to_diagnostic_message(error: EscapeError, mode: Mode) -> &'static str {
"non-ASCII character in byte string literal"
}
EscapeError::NonAsciiCharInByte => "non-ASCII character in raw byte string literal",
EscapeError::NulInCStr => "null character in C string literal",
EscapeError::UnskippedWhitespaceWarning => "",
EscapeError::MultipleSkippedLinesWarning => "",
}

3
src/tools/rust-analyzer/crates/syntax/src/validation.rs
View File

@ -106,6 +106,9 @@ fn rustc_unescape_error_to_string(err: unescape::EscapeError) -> (&'static str,
EE::NonAsciiCharInByte => {
"Byte literals must not contain non-ASCII characters"
}
EE::NulInCStr => {
"C strings literals must not contain null characters"
}
EE::UnskippedWhitespaceWarning => "Whitespace after this escape is not skipped",
EE::MultipleSkippedLinesWarning => "Multiple lines are skipped by this escape",

9
src/tools/rustfmt/src/patterns.rs
View File

@ -40,9 +40,11 @@ pub(crate) fn is_short_pattern(pat: &ast::Pat, pat_str: &str) -> bool {
fn is_short_pattern_inner(pat: &ast::Pat) -> bool {
match pat.kind {
ast::PatKind::Rest | ast::PatKind::Never | ast::PatKind::Wild | ast::PatKind::Lit(_) => {
true
}
ast::PatKind::Rest
| ast::PatKind::Never
| ast::PatKind::Wild
| ast::PatKind::Err(_)
| ast::PatKind::Lit(_) => true,
ast::PatKind::Ident(_, _, ref pat) => pat.is_none(),
ast::PatKind::Struct(..)
| ast::PatKind::MacCall(..)
@ -274,6 +276,7 @@ impl Rewrite for Pat {
PatKind::Paren(ref pat) => pat
.rewrite(context, shape.offset_left(1)?.sub_width(1)?)
.map(|inner_pat| format!("({})", inner_pat)),
PatKind::Err(_) => None,
}
}
}

6
tests/ui-fulldeps/stable-mir/check_abi.rs
View File

@ -12,14 +12,12 @@
#![feature(ascii_char, ascii_char_variants)]
extern crate rustc_hir;
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
extern crate rustc_interface;
extern crate stable_mir;
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::abi::{ArgAbi, CallConvention, FieldsShape, PassMode, VariantsShape};
use stable_mir::mir::mono::Instance;
@ -32,7 +30,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
/// This function uses the Stable MIR APIs to get information about the test crate.
fn test_stable_mir(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_stable_mir() -> ControlFlow<()> {
// Find items in the local crate.
let items = stable_mir::all_local_items();
@ -117,7 +115,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_stable_mir(tcx)).unwrap();
run!(args, test_stable_mir).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

6
tests/ui-fulldeps/stable-mir/check_allocation.rs
View File

@ -14,14 +14,12 @@
#![feature(ascii_char, ascii_char_variants)]
extern crate rustc_hir;
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
extern crate rustc_interface;
extern crate stable_mir;
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::crate_def::CrateDef;
use stable_mir::mir::alloc::GlobalAlloc;
@ -40,7 +38,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
/// This function uses the Stable MIR APIs to get information about the test crate.
fn test_stable_mir(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_stable_mir() -> ControlFlow<()> {
// Find items in the local crate.
let items = stable_mir::all_local_items();
check_foo(*get_item(&items, (ItemKind::Static, "FOO")).unwrap());
@ -230,7 +228,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_stable_mir(tcx)).unwrap();
run!(args, test_stable_mir).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

6
tests/ui-fulldeps/stable-mir/check_defs.rs
View File

@ -11,7 +11,6 @@
#![feature(assert_matches)]
#![feature(control_flow_enum)]
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
@ -20,7 +19,6 @@ extern crate stable_mir;
use std::assert_matches::assert_matches;
use mir::{mono::Instance, TerminatorKind::*};
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::ty::{RigidTy, TyKind, Ty, UintTy};
use stable_mir::*;
@ -30,7 +28,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
/// This function uses the Stable MIR APIs to get information about the test crate.
fn test_stable_mir(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_stable_mir() -> ControlFlow<()> {
let entry = stable_mir::entry_fn().unwrap();
let main_fn = Instance::try_from(entry).unwrap();
assert_eq!(main_fn.name(), "main");
@ -113,7 +111,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_stable_mir(tcx)).unwrap();
run!(args, test_stable_mir).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

6
tests/ui-fulldeps/stable-mir/check_instance.rs
View File

@ -11,7 +11,6 @@
#![feature(assert_matches)]
#![feature(control_flow_enum)]
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
@ -19,7 +18,6 @@ extern crate rustc_interface;
extern crate stable_mir;
use mir::{mono::Instance, TerminatorKind::*};
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::ty::{RigidTy, TyKind};
use stable_mir::*;
@ -29,7 +27,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
/// This function uses the Stable MIR APIs to get information about the test crate.
fn test_stable_mir(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_stable_mir() -> ControlFlow<()> {
let items = stable_mir::all_local_items();
// Get all items and split generic vs monomorphic items.
@ -96,7 +94,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_stable_mir(tcx)).unwrap();
run!(args, test_stable_mir).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

6
tests/ui-fulldeps/stable-mir/check_item_kind.rs
View File

@ -11,14 +11,12 @@
#![feature(assert_matches)]
#![feature(control_flow_enum)]
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
extern crate rustc_interface;
extern crate stable_mir;
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::*;
use std::io::Write;
@ -27,7 +25,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
/// This function uses the Stable MIR APIs to get information about the test crate.
fn test_item_kind(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_item_kind() -> ControlFlow<()> {
let items = stable_mir::all_local_items();
assert_eq!(items.len(), 4);
// Constructor item.
@ -59,7 +57,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_item_kind(tcx)).unwrap();
run!(args, test_item_kind).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

4
tests/ui-fulldeps/stable-mir/check_trait_queries.rs
View File

@ -11,14 +11,12 @@
#![feature(assert_matches)]
#![feature(control_flow_enum)]
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
extern crate rustc_interface;
extern crate stable_mir;
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::CrateDef;
use std::collections::HashSet;
@ -83,7 +81,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, test_traits()).unwrap();
run!(args, test_traits).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

6
tests/ui-fulldeps/stable-mir/check_ty_fold.rs
View File

@ -12,14 +12,12 @@
#![feature(assert_matches)]
#![feature(control_flow_enum)]
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
extern crate rustc_interface;
extern crate stable_mir;
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::ty::{RigidTy, TyKind, Ty, };
use stable_mir::mir::{Body, MirVisitor, FieldIdx, Place, ProjectionElem, visit::{Location,
@ -30,7 +28,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
/// This function uses the Stable MIR APIs to get information about the test crate.
fn test_stable_mir(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_stable_mir() -> ControlFlow<()> {
let main_fn = stable_mir::entry_fn();
let body = main_fn.unwrap().body();
let mut visitor = PlaceVisitor{ body: &body, tested: false};
@ -87,7 +85,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_stable_mir(tcx)).unwrap();
run!(args, test_stable_mir).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

20
tests/ui-fulldeps/stable-mir/compilation-result.rs
View File

@ -10,14 +10,12 @@
#![feature(rustc_private)]
#![feature(assert_matches)]
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
extern crate rustc_interface;
extern crate stable_mir;
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use std::io::Write;
@ -32,33 +30,41 @@ fn main() {
test_continue(args.clone());
test_break(args.clone());
test_failed(args.clone());
test_skipped(args);
test_skipped(args.clone());
test_captured(args)
}
fn test_continue(args: Vec<String>) {
let result = run!(args, ControlFlow::Continue::<(), bool>(true));
let result = run!(args, || ControlFlow::Continue::<(), bool>(true));
assert_eq!(result, Ok(true));
}
fn test_break(args: Vec<String>) {
let result = run!(args, ControlFlow::Break::<bool, i32>(false));
let result = run!(args, || ControlFlow::Break::<bool, i32>(false));
assert_eq!(result, Err(stable_mir::CompilerError::Interrupted(false)));
}
#[allow(unreachable_code)]
fn test_skipped(mut args: Vec<String>) {
args.push("--version".to_string());
let result = run!(args, unreachable!() as ControlFlow<()>);
let result = run!(args, || unreachable!() as ControlFlow<()>);
assert_eq!(result, Err(stable_mir::CompilerError::Skipped));
}
#[allow(unreachable_code)]
fn test_failed(mut args: Vec<String>) {
args.push("--cfg=broken".to_string());
let result = run!(args, unreachable!() as ControlFlow<()>);
let result = run!(args, || unreachable!() as ControlFlow<()>);
assert_eq!(result, Err(stable_mir::CompilerError::CompilationFailed));
}
/// Test that we are able to pass a closure and set the return according to the captured value.
fn test_captured(args: Vec<String>) {
let captured = "10".to_string();
let result = run!(args, || ControlFlow::Continue::<(), usize>(captured.len()));
assert_eq!(result, Ok(captured.len()));
}
fn generate_input(path: &str) -> std::io::Result<()> {
let mut file = std::fs::File::create(path)?;
write!(

6
tests/ui-fulldeps/stable-mir/crate-info.rs
View File

@ -12,7 +12,6 @@
#![feature(control_flow_enum)]
extern crate rustc_hir;
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
@ -20,7 +19,6 @@ extern crate rustc_interface;
extern crate stable_mir;
use rustc_hir::def::DefKind;
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::ItemKind;
use stable_mir::crate_def::CrateDef;
@ -33,7 +31,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
/// This function uses the Stable MIR APIs to get information about the test crate.
fn test_stable_mir(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_stable_mir() -> ControlFlow<()> {
// Get the local crate using stable_mir API.
let local = stable_mir::local_crate();
assert_eq!(&local.name, CRATE_NAME);
@ -194,7 +192,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_stable_mir(tcx)).unwrap();
run!(args, test_stable_mir).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

6
tests/ui-fulldeps/stable-mir/projections.rs
View File

@ -12,14 +12,12 @@
#![feature(control_flow_enum)]
extern crate rustc_hir;
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
extern crate rustc_interface;
extern crate stable_mir;
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::crate_def::CrateDef;
use stable_mir::mir::{ProjectionElem, Rvalue, StatementKind};
@ -32,7 +30,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
/// Tests projections within Place objects
fn test_place_projections(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_place_projections() -> ControlFlow<()> {
let items = stable_mir::all_local_items();
let body = get_item(&items, (ItemKind::Fn, "projections")).unwrap().body();
assert_eq!(body.blocks.len(), 4);
@ -159,7 +157,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_place_projections(tcx)).unwrap();
run!(args, test_place_projections).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

4
tests/ui-fulldeps/stable-mir/smir_internal.rs
View File

@ -26,7 +26,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
fn test_translation(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_translation(_tcx: TyCtxt) -> ControlFlow<()> {
let main_fn = stable_mir::entry_fn().unwrap();
let body = main_fn.body();
let orig_ty = body.locals()[0].ty;
@ -48,7 +48,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_translation(tcx)).unwrap();
run_with_tcx!(args, test_translation).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

6
tests/ui-fulldeps/stable-mir/smir_visitor.rs
View File

@ -11,7 +11,6 @@
#![feature(assert_matches)]
#![feature(control_flow_enum)]
extern crate rustc_middle;
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
@ -19,7 +18,6 @@ extern crate rustc_interface;
extern crate stable_mir;
use std::collections::HashSet;
use rustc_middle::ty::TyCtxt;
use rustc_smir::rustc_internal;
use stable_mir::*;
use stable_mir::mir::MirVisitor;
@ -28,7 +26,7 @@ use std::ops::ControlFlow;
const CRATE_NAME: &str = "input";
fn test_visitor(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
fn test_visitor() -> ControlFlow<()> {
let main_fn = stable_mir::entry_fn();
let main_body = main_fn.unwrap().body();
let main_visitor = TestVisitor::collect(&main_body);
@ -116,7 +114,7 @@ fn main() {
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, tcx, test_visitor(tcx)).unwrap();
run!(args, test_visitor).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {

3
tests/ui/async-await/async-borrowck-escaping-closure-error.rs
View File

@ -1,9 +1,10 @@
// edition:2018
// check-pass
#![feature(async_closure)]
fn foo() -> Box<dyn std::future::Future<Output = u32>> {
let x = 0u32;
Box::new((async || x)())
//~^ ERROR E0373
}
fn main() {

21
tests/ui/async-await/async-borrowck-escaping-closure-error.stderr
View File

@ -1,21 +0,0 @@
error[E0373]: closure may outlive the current function, but it borrows `x`, which is owned by the current function
--> $DIR/async-borrowck-escaping-closure-error.rs:5:15
|
LL | Box::new((async || x)())
| ^^^^^^^^ - `x` is borrowed here
| |
| may outlive borrowed value `x`
|
note: closure is returned here
--> $DIR/async-borrowck-escaping-closure-error.rs:5:5
|
LL | Box::new((async || x)())
| ^^^^^^^^^^^^^^^^^^^^^^^^
help: to force the closure to take ownership of `x` (and any other referenced variables), use the `move` keyword
|
LL | Box::new((async move || x)())
| ++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0373`.

12
tests/ui/async-await/inference_var_self_argument.rs Normal file
View File

@ -0,0 +1,12 @@
//! This is a regression test for an ICE.
// edition: 2021
trait Foo {
async fn foo(self: &dyn Foo) {
//~^ ERROR: `Foo` cannot be made into an object
//~| ERROR invalid `self` parameter type: &dyn Foo
todo!()
}
}
fn main() {}

28
tests/ui/async-await/inference_var_self_argument.stderr Normal file
View File

@ -0,0 +1,28 @@
error[E0038]: the trait `Foo` cannot be made into an object
--> $DIR/inference_var_self_argument.rs:5:5
|
LL | async fn foo(self: &dyn Foo) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Foo` cannot be made into an object
|
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> $DIR/inference_var_self_argument.rs:5:14
|
LL | trait Foo {
| --- this trait cannot be made into an object...
LL | async fn foo(self: &dyn Foo) {
| ^^^ ...because method `foo` is `async`
= help: consider moving `foo` to another trait
error[E0307]: invalid `self` parameter type: &dyn Foo
--> $DIR/inference_var_self_argument.rs:5:24
|
LL | async fn foo(self: &dyn Foo) {
| ^^^^^^^^
|
= note: type of `self` must be `Self` or a type that dereferences to it
= help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0038, E0307.
For more information about an error, try `rustc --explain E0038`.

2
tests/ui/async-await/no-params-non-move-async-closure.rs
View File

@ -1,8 +1,8 @@
// edition:2018
// check-pass
#![feature(async_closure)]
fn main() {
let _ = async |x: u8| {};
//~^ ERROR `async` non-`move` closures with parameters are not currently supported
}

11
tests/ui/async-await/no-params-non-move-async-closure.stderr
View File

@ -1,11 +0,0 @@
error[E0708]: `async` non-`move` closures with parameters are not currently supported
--> $DIR/no-params-non-move-async-closure.rs:6:13
|
LL | let _ = async |x: u8| {};
| ^^^^^^^^^^^^^
|
= help: consider using `let` statements to manually capture variables by reference before entering an `async move` closure
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0708`.

17
tests/ui/object-safety/erroneous_signature.rs Normal file
View File

@ -0,0 +1,17 @@
trait Foo {
fn err(&self) -> MissingType;
//~^ ERROR cannot find type `MissingType` in this scope
}
impl Foo for i32 {
fn err(&self) -> MissingType {
//~^ ERROR cannot find type `MissingType` in this scope
0
}
}
fn coerce(x: &i32) -> &dyn Foo {
x
}
fn main() {}

15
tests/ui/object-safety/erroneous_signature.stderr Normal file
View File

@ -0,0 +1,15 @@
error[E0412]: cannot find type `MissingType` in this scope
--> $DIR/erroneous_signature.rs:2:22
|
LL | fn err(&self) -> MissingType;
| ^^^^^^^^^^^ not found in this scope
error[E0412]: cannot find type `MissingType` in this scope
--> $DIR/erroneous_signature.rs:7:22
|
LL | fn err(&self) -> MissingType {
| ^^^^^^^^^^^ not found in this scope
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0412`.

BIN
tests/ui/rfcs/rfc-3348-c-string-literals/no-nuls.rs
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BIN
tests/ui/rfcs/rfc-3348-c-string-literals/no-nuls.stderr
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2
triagebot.toml
View File

@ -631,7 +631,7 @@ cc = ["@nnethercote"]
[assign]
warn_non_default_branch = true
contributing_url = "https://rustc-dev-guide.rust-lang.org/getting-started.html"
users_on_vacation = ["jyn514", "spastorino"]
users_on_vacation = ["jyn514"]
[assign.adhoc_groups]
compiler-team = [