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Auto merge of #62407 - Centril:rollup-g0zmff7, r=Centril 

Rollup of 10 pull requests

Successful merges:

 - #62123 ( Remove needless lifetimes (std))
 - #62150 (Implement mem::{zeroed,uninitialized} in terms of MaybeUninit.)
 - #62169 (Derive which queries to save using the proc macro)
 - #62238 (Fix code block information icon position)
 - #62292 (Move `async || ...` closures into `#![feature(async_closure)]`)
 - #62323 (Clarify unaligned fields in ptr::{read,write}_unaligned)
 - #62324 (Reduce reliance on `await!(...)` macro)
 - #62371 (Add tracking issue for Box::into_pin)
 - #62383 (Improve error span for async type inference error)
 - #62388 (Break out of the correct number of scopes in loops)

Failed merges:

r? @ghost
This commit is contained in:
bors 2019-07-05 11:53:52 +00:00
parent f119bf2761 18081890ea
commit 853f30052d
77 changed files with 495 additions and 280 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/liballoc/boxed.rs
View File

@ -320,7 +320,7 @@ impl<T: ?Sized> Box<T> {
/// This conversion does not allocate on the heap and happens in place.
///
/// This is also available via [`From`].
#[unstable(feature = "box_into_pin", issue = "0")]
#[unstable(feature = "box_into_pin", issue = "62370")]
pub fn into_pin(boxed: Box<T>) -> Pin<Box<T>> {
// It's not possible to move or replace the insides of a `Pin<Box<T>>`
// when `T: !Unpin`, so it's safe to pin it directly without any

8
src/liballoc/collections/btree/map.rs
View File

@ -2032,7 +2032,7 @@ impl<K, V> BTreeMap<K, V> {
/// assert_eq!(keys, [1, 2]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn keys<'a>(&'a self) -> Keys<'a, K, V> {
pub fn keys(&self) -> Keys<'_, K, V> {
Keys { inner: self.iter() }
}
@ -2053,7 +2053,7 @@ impl<K, V> BTreeMap<K, V> {
/// assert_eq!(values, ["hello", "goodbye"]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn values<'a>(&'a self) -> Values<'a, K, V> {
pub fn values(&self) -> Values<'_, K, V> {
Values { inner: self.iter() }
}
@ -2557,8 +2557,8 @@ enum UnderflowResult<'a, K, V> {
Stole(NodeRef<marker::Mut<'a>, K, V, marker::Internal>),
}
fn handle_underfull_node<'a, K, V>(node: NodeRef<marker::Mut<'a>, K, V, marker::LeafOrInternal>)
-> UnderflowResult<'a, K, V> {
fn handle_underfull_node<K, V>(node: NodeRef<marker::Mut<'_>, K, V, marker::LeafOrInternal>)
-> UnderflowResult<'_, K, V> {
let parent = if let Ok(parent) = node.ascend() {
parent
} else {

2
src/liballoc/collections/btree/node.rs
View File

@ -394,7 +394,7 @@ impl<BorrowType, K, V, Type> NodeRef<BorrowType, K, V, Type> {
}
/// Temporarily takes out another, immutable reference to the same node.
fn reborrow<'a>(&'a self) -> NodeRef<marker::Immut<'a>, K, V, Type> {
fn reborrow(&self) -> NodeRef<marker::Immut<'_>, K, V, Type> {
NodeRef {
height: self.height,
node: self.node,

2
src/liballoc/string.rs
View File

@ -552,7 +552,7 @@ impl String {
/// assert_eq!("Hello <20>World", output);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn from_utf8_lossy<'a>(v: &'a [u8]) -> Cow<'a, str> {
pub fn from_utf8_lossy(v: &[u8]) -> Cow<'_, str> {
let mut iter = lossy::Utf8Lossy::from_bytes(v).chunks();
let (first_valid, first_broken) = if let Some(chunk) = iter.next() {

16
src/libcore/intrinsics.rs
View File

@ -700,17 +700,15 @@ extern "rust-intrinsic" {
/// which is unsafe unless `T` is `Copy`. Also, even if T is
/// `Copy`, an all-zero value may not correspond to any legitimate
/// state for the type in question.
#[unstable(feature = "core_intrinsics",
reason = "intrinsics are unlikely to ever be stabilized, instead \
they should be used through stabilized interfaces \
in the rest of the standard library",
issue = "0")]
#[rustc_deprecated(reason = "no longer used by rustc, will be removed - use MaybeUnint instead",
since = "1.38.0")]
pub fn init<T>() -> T;
/// Creates an uninitialized value.
///
/// `uninit` is unsafe because there is no guarantee of what its
/// contents are. In particular its drop-flag may be set to any
/// state, which means it may claim either dropped or
/// undropped. In the general case one must use `ptr::write` to
/// initialize memory previous set to the result of `uninit`.
pub fn uninit<T>() -> T;
/// Moves a value out of scope without running drop glue.
pub fn forget<T: ?Sized>(_: T);

2
src/libcore/marker.rs
View File

@ -498,7 +498,7 @@ macro_rules! impls{
/// # end: *const T,
/// # phantom: PhantomData<&'a T>,
/// # }
/// fn borrow_vec<'a, T>(vec: &'a Vec<T>) -> Slice<'a, T> {
/// fn borrow_vec<T>(vec: &Vec<T>) -> Slice<'_, T> {
/// let ptr = vec.as_ptr();
/// Slice {
/// start: ptr,

6
src/libcore/mem/mod.rs
View File

@ -450,8 +450,7 @@ pub const fn needs_drop<T>() -> bool {
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
pub unsafe fn zeroed<T>() -> T {
intrinsics::panic_if_uninhabited::<T>();
intrinsics::init()
MaybeUninit::zeroed().assume_init()
}
/// Bypasses Rust's normal memory-initialization checks by pretending to
@ -476,8 +475,7 @@ pub unsafe fn zeroed<T>() -> T {
#[rustc_deprecated(since = "1.38.0", reason = "use `mem::MaybeUninit` instead")]
#[stable(feature = "rust1", since = "1.0.0")]
pub unsafe fn uninitialized<T>() -> T {
intrinsics::panic_if_uninhabited::<T>();
intrinsics::uninit()
MaybeUninit::uninit().assume_init()
}
/// Swaps the values at two mutable locations, without deinitializing either one.

4
src/libcore/ops/index.rs
View File

@ -105,7 +105,7 @@ pub trait Index<Idx: ?Sized> {
/// impl Index<Side> for Balance {
/// type Output = Weight;
///
/// fn index<'a>(&'a self, index: Side) -> &'a Self::Output {
/// fn index(&self, index: Side) -> &Self::Output {
/// println!("Accessing {:?}-side of balance immutably", index);
/// match index {
/// Side::Left => &self.left,
@ -115,7 +115,7 @@ pub trait Index<Idx: ?Sized> {
/// }
///
/// impl IndexMut<Side> for Balance {
/// fn index_mut<'a>(&'a mut self, index: Side) -> &'a mut Self::Output {
/// fn index_mut(&mut self, index: Side) -> &mut Self::Output {
/// println!("Accessing {:?}-side of balance mutably", index);
/// match index {
/// Side::Left => &mut self.left,

88
src/libcore/ptr/mod.rs
View File

@ -625,42 +625,50 @@ pub unsafe fn read<T>(src: *const T) -> T {
/// [read-ownership]: ./fn.read.html#ownership-of-the-returned-value
/// [valid]: ../ptr/index.html#safety
///
/// # Examples
/// ## On `packed` structs
///
/// Access members of a packed struct by reference:
/// It is currently impossible to create raw pointers to unaligned fields
/// of a packed struct.
///
/// ```
/// use std::ptr;
/// Attempting to create a raw pointer to an `unaligned` struct field with
/// an expression such as `&packed.unaligned as *const FieldType` creates an
/// intermediate unaligned reference before converting that to a raw pointer.
/// That this reference is temporary and immediately cast is inconsequential
/// as the compiler always expects references to be properly aligned.
/// As a result, using `&packed.unaligned as *const FieldType` causes immediate
/// *undefined behavior* in your program.
///
/// An example of what not to do and how this relates to `read_unaligned` is:
///
/// ```no_run
/// #[repr(packed, C)]
/// struct Packed {
/// _padding: u8,
/// unaligned: u32,
/// }
///
/// let x = Packed {
/// let packed = Packed {
/// _padding: 0x00,
/// unaligned: 0x01020304,
/// };
///
/// let v = unsafe {
/// // Take the address of a 32-bit integer which is not aligned.
/// // This must be done as a raw pointer; unaligned references are invalid.
/// let unaligned = &x.unaligned as *const u32;
/// // Here we attempt to take the address of a 32-bit integer which is not aligned.
/// let unaligned =
/// // A temporary unaligned reference is created here which results in
/// // undefined behavior regardless of whether the reference is used or not.
/// &packed.unaligned
/// // Casting to a raw pointer doesn't help; the mistake already happened.
/// as *const u32;
///
/// // Dereferencing normally will emit an aligned load instruction,
/// // causing undefined behavior.
/// // let v = *unaligned; // ERROR
///
/// // Instead, use `read_unaligned` to read improperly aligned values.
/// let v = ptr::read_unaligned(unaligned);
/// let v = std::ptr::read_unaligned(unaligned);
///
/// v
/// };
///
/// // Accessing unaligned values directly is safe.
/// assert!(x.unaligned == v);
/// ```
///
/// Accessing unaligned fields directly with e.g. `packed.unaligned` is safe however.
// FIXME: Update docs based on outcome of RFC #2582 and friends.
#[inline]
#[stable(feature = "ptr_unaligned", since = "1.17.0")]
pub unsafe fn read_unaligned<T>(src: *const T) -> T {
@ -789,38 +797,48 @@ pub unsafe fn write<T>(dst: *mut T, src: T) {
///
/// [valid]: ../ptr/index.html#safety
///
/// # Examples
/// ## On `packed` structs
///
/// Access fields in a packed struct:
/// It is currently impossible to create raw pointers to unaligned fields
/// of a packed struct.
///
/// ```
/// use std::{mem, ptr};
/// Attempting to create a raw pointer to an `unaligned` struct field with
/// an expression such as `&packed.unaligned as *const FieldType` creates an
/// intermediate unaligned reference before converting that to a raw pointer.
/// That this reference is temporary and immediately cast is inconsequential
/// as the compiler always expects references to be properly aligned.
/// As a result, using `&packed.unaligned as *const FieldType` causes immediate
/// *undefined behavior* in your program.
///
/// An example of what not to do and how this relates to `write_unaligned` is:
///
/// ```no_run
/// #[repr(packed, C)]
/// #[derive(Default)]
/// struct Packed {
/// _padding: u8,
/// unaligned: u32,
/// }
///
/// let v = 0x01020304;
/// let mut x: Packed = unsafe { mem::zeroed() };
/// let mut packed: Packed = unsafe { std::mem::zeroed() };
///
/// unsafe {
/// // Take a reference to a 32-bit integer which is not aligned.
/// let unaligned = &mut x.unaligned as *mut u32;
/// let v = unsafe {
/// // Here we attempt to take the address of a 32-bit integer which is not aligned.
/// let unaligned =
/// // A temporary unaligned reference is created here which results in
/// // undefined behavior regardless of whether the reference is used or not.
/// &mut packed.unaligned
/// // Casting to a raw pointer doesn't help; the mistake already happened.
/// as *mut u32;
///
/// // Dereferencing normally will emit an aligned store instruction,
/// // causing undefined behavior because the pointer is not aligned.
/// // *unaligned = v; // ERROR
/// std::ptr::write_unaligned(unaligned, v);
///
/// // Instead, use `write_unaligned` to write improperly aligned values.
/// ptr::write_unaligned(unaligned, v);
/// }
///
/// // Accessing unaligned values directly is safe.
/// assert!(x.unaligned == v);
/// v
/// };
/// ```
///
/// Accessing unaligned fields directly with e.g. `packed.unaligned` is safe however.
// FIXME: Update docs based on outcome of RFC #2582 and friends.
#[inline]
#[stable(feature = "ptr_unaligned", since = "1.17.0")]
pub unsafe fn write_unaligned<T>(dst: *mut T, src: T) {

5
src/librustc/query/mod.rs
View File

@ -422,11 +422,6 @@ rustc_queries! {
"const-evaluating `{}`",
tcx.def_path_str(key.value.instance.def.def_id())
}
cache_on_disk_if(_, opt_result) {
// Only store results without errors
// FIXME: We never store these
opt_result.map_or(true, |r| r.is_ok())
}
}
/// Results of evaluating const items or constants embedded in

32
src/librustc/ty/query/on_disk_cache.rs
View File

@ -201,28 +201,22 @@ impl<'sess> OnDiskCache<'sess> {
let mut query_result_index = EncodedQueryResultIndex::new();
time(tcx.sess, "encode query results", || {
use crate::ty::query::queries::*;
let enc = &mut encoder;
let qri = &mut query_result_index;
encode_query_results::<type_of<'_>, _>(tcx, enc, qri)?;
encode_query_results::<generics_of<'_>, _>(tcx, enc, qri)?;
encode_query_results::<predicates_of<'_>, _>(tcx, enc, qri)?;
encode_query_results::<used_trait_imports<'_>, _>(tcx, enc, qri)?;
encode_query_results::<typeck_tables_of<'_>, _>(tcx, enc, qri)?;
encode_query_results::<codegen_fulfill_obligation<'_>, _>(tcx, enc, qri)?;
encode_query_results::<optimized_mir<'_>, _>(tcx, enc, qri)?;
encode_query_results::<unsafety_check_result<'_>, _>(tcx, enc, qri)?;
encode_query_results::<borrowck<'_>, _>(tcx, enc, qri)?;
encode_query_results::<mir_borrowck<'_>, _>(tcx, enc, qri)?;
encode_query_results::<mir_const_qualif<'_>, _>(tcx, enc, qri)?;
encode_query_results::<const_is_rvalue_promotable_to_static<'_>, _>(tcx, enc, qri)?;
encode_query_results::<symbol_name<'_>, _>(tcx, enc, qri)?;
encode_query_results::<check_match<'_>, _>(tcx, enc, qri)?;
encode_query_results::<codegen_fn_attrs<'_>, _>(tcx, enc, qri)?;
encode_query_results::<specialization_graph_of<'_>, _>(tcx, enc, qri)?;
encode_query_results::<const_eval<'_>, _>(tcx, enc, qri)?;
// FIXME: Include const_eval_raw?
macro_rules! encode_queries {
($($query:ident,)*) => {
$(
encode_query_results::<ty::query::queries::$query<'_>, _>(
tcx,
enc,
qri
)?;
)*
}
}
rustc_cached_queries!(encode_queries!);
Ok(())
})?;

2
src/librustc_codegen_llvm/intrinsic.rs
View File

@ -234,7 +234,7 @@ impl IntrinsicCallMethods<'tcx> for Builder<'a, 'll, 'tcx> {
return;
}
// Effectively no-ops
"uninit" | "forget" => {
"forget" => {
return;
}
"needs_drop" => {

13
src/librustc_macros/src/query.rs
View File

@ -414,6 +414,7 @@ pub fn rustc_queries(input: TokenStream) -> TokenStream {
let mut dep_node_force_stream = quote! {};
let mut try_load_from_on_disk_cache_stream = quote! {};
let mut no_force_queries = Vec::new();
let mut cached_queries = quote! {};
for group in groups.0 {
let mut group_stream = quote! {};
@ -427,6 +428,12 @@ pub fn rustc_queries(input: TokenStream) -> TokenStream {
_ => quote! { #result_full },
};
if modifiers.cache.is_some() {
cached_queries.extend(quote! {
#name,
});
}
if modifiers.cache.is_some() && !modifiers.no_force {
try_load_from_on_disk_cache_stream.extend(quote! {
DepKind::#name => {
@ -549,6 +556,12 @@ pub fn rustc_queries(input: TokenStream) -> TokenStream {
}
}
}
macro_rules! rustc_cached_queries {
($($macro:tt)*) => {
$($macro)*(#cached_queries);
}
}
#query_description_stream
impl DepNode {

12
src/librustc_mir/build/matches/mod.rs
View File

@ -228,10 +228,12 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
};
// Step 5. Create everything else: the guards and the arms.
let match_scope = self.scopes.topmost();
let arm_end_blocks: Vec<_> = arm_candidates.into_iter().map(|(arm, mut candidates)| {
let arm_source_info = self.source_info(arm.span);
let region_scope = (arm.scope, arm_source_info);
self.in_scope(region_scope, arm.lint_level, |this| {
let arm_scope = (arm.scope, arm_source_info);
self.in_scope(arm_scope, arm.lint_level, |this| {
let body = this.hir.mirror(arm.body.clone());
let scope = this.declare_bindings(
None,
@ -248,7 +250,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
arm.guard.clone(),
&fake_borrow_temps,
scrutinee_span,
region_scope,
match_scope,
);
} else {
arm_block = this.cfg.start_new_block();
@ -259,7 +261,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
arm.guard.clone(),
&fake_borrow_temps,
scrutinee_span,
region_scope,
match_scope,
);
this.cfg.terminate(
binding_end,
@ -1339,7 +1341,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
guard: Option<Guard<'tcx>>,
fake_borrows: &Vec<(&Place<'tcx>, Local)>,
scrutinee_span: Span,
region_scope: (region::Scope, SourceInfo),
region_scope: region::Scope,
) -> BasicBlock {
debug!("bind_and_guard_matched_candidate(candidate={:?})", candidate);

21
src/librustc_mir/build/mod.rs
View File

@ -604,9 +604,18 @@ where
}
let arg_scope_s = (arg_scope, source_info);
unpack!(block = builder.in_scope(arg_scope_s, LintLevel::Inherited, |builder| {
builder.args_and_body(block, &arguments, arg_scope, &body.value)
}));
// `return_block` is called when we evaluate a `return` expression, so
// we just use `START_BLOCK` here.
unpack!(block = builder.in_breakable_scope(
None,
START_BLOCK,
Place::RETURN_PLACE,
|builder| {
builder.in_scope(arg_scope_s, LintLevel::Inherited, |builder| {
builder.args_and_body(block, &arguments, arg_scope, &body.value)
})
},
));
// Attribute epilogue to function's closing brace
let fn_end = span.shrink_to_hi();
let source_info = builder.source_info(fn_end);
@ -860,11 +869,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
}
let body = self.hir.mirror(ast_body);
// `return_block` is called when we evaluate a `return` expression, so
// we just use `START_BLOCK` here.
self.in_breakable_scope(None, START_BLOCK, Place::RETURN_PLACE, |this| {
this.into(&Place::RETURN_PLACE, block, body)
})
self.into(&Place::RETURN_PLACE, block, body)
}
fn get_unit_temp(&mut self) -> Place<'tcx> {

16
src/librustc_mir/build/scope.rs
View File

@ -332,9 +332,9 @@ impl<'tcx> Scopes<'tcx> {
}
}
fn num_scopes_to(&self, region_scope: (region::Scope, SourceInfo), span: Span) -> usize {
let scope_count = 1 + self.scopes.iter().rev()
.position(|scope| scope.region_scope == region_scope.0)
fn num_scopes_above(&self, region_scope: region::Scope, span: Span) -> usize {
let scope_count = self.scopes.iter().rev()
.position(|scope| scope.region_scope == region_scope)
.unwrap_or_else(|| {
span_bug!(span, "region_scope {:?} does not enclose", region_scope)
});
@ -354,7 +354,7 @@ impl<'tcx> Scopes<'tcx> {
/// Returns the topmost active scope, which is known to be alive until
/// the next scope expression.
fn topmost(&self) -> region::Scope {
pub(super) fn topmost(&self) -> region::Scope {
self.scopes.last().expect("topmost_scope: no scopes present").region_scope
}
@ -514,7 +514,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
} else {
assert!(value.is_none(), "`return` and `break` should have a destination");
}
self.exit_scope(source_info.span, (region_scope, source_info), block, target_block);
self.exit_scope(source_info.span, region_scope, block, target_block);
self.cfg.start_new_block().unit()
}
@ -523,12 +523,12 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
/// needed. See module comment for details.
pub fn exit_scope(&mut self,
span: Span,
region_scope: (region::Scope, SourceInfo),
region_scope: region::Scope,
mut block: BasicBlock,
target: BasicBlock) {
debug!("exit_scope(region_scope={:?}, block={:?}, target={:?})",
region_scope, block, target);
let scope_count = self.scopes.num_scopes_to(region_scope, span);
let scope_count = self.scopes.num_scopes_above(region_scope, span);
// If we are emitting a `drop` statement, we need to have the cached
// diverge cleanup pads ready in case that drop panics.
@ -545,7 +545,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
continue;
}
let source_info = scope.source_info(span);
block = match scope.cached_exits.entry((target, region_scope.0)) {
block = match scope.cached_exits.entry((target, region_scope)) {
Entry::Occupied(e) => {
self.cfg.terminate(block, source_info,
TerminatorKind::Goto { target: *e.get() });

2
src/librustc_typeck/check/generator_interior.rs
View File

@ -75,7 +75,7 @@ impl<'a, 'tcx> InteriorVisitor<'a, 'tcx> {
// If unresolved type isn't a ty_var then unresolved_type_span is None
self.fcx.need_type_info_err_in_generator(
self.kind,
unresolved_type_span.unwrap_or(yield_data.span),
unresolved_type_span.unwrap_or(source_span),
unresolved_type,
)
.span_note(yield_data.span, &*note)

1
src/librustc_typeck/check/intrinsic.rs
View File

@ -145,7 +145,6 @@ pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem) {
"rustc_peek" => (1, vec![param(0)], param(0)),
"panic_if_uninhabited" => (1, Vec::new(), tcx.mk_unit()),
"init" => (1, Vec::new(), param(0)),
"uninit" => (1, Vec::new(), param(0)),
"forget" => (1, vec![param(0)], tcx.mk_unit()),
"transmute" => (2, vec![ param(0) ], param(1)),
"move_val_init" => {

10
src/librustdoc/clean/mod.rs
View File

@ -392,7 +392,7 @@ impl fmt::Debug for Item {
impl Item {
/// Finds the `doc` attribute as a NameValue and returns the corresponding
/// value found.
pub fn doc_value<'a>(&'a self) -> Option<&'a str> {
pub fn doc_value(&self) -> Option<&str> {
self.attrs.doc_value()
}
/// Finds all `doc` attributes as NameValues and returns their corresponding values, joined
@ -699,11 +699,11 @@ impl<'a> Iterator for ListAttributesIter<'a> {
pub trait AttributesExt {
/// Finds an attribute as List and returns the list of attributes nested inside.
fn lists<'a>(&'a self, name: Symbol) -> ListAttributesIter<'a>;
fn lists(&self, name: Symbol) -> ListAttributesIter<'_>;
}
impl AttributesExt for [ast::Attribute] {
fn lists<'a>(&'a self, name: Symbol) -> ListAttributesIter<'a> {
fn lists(&self, name: Symbol) -> ListAttributesIter<'_> {
ListAttributesIter {
attrs: self.iter(),
current_list: Vec::new().into_iter(),
@ -952,7 +952,7 @@ impl Attributes {
/// Finds the `doc` attribute as a NameValue and returns the corresponding
/// value found.
pub fn doc_value<'a>(&'a self) -> Option<&'a str> {
pub fn doc_value(&self) -> Option<&str> {
self.doc_strings.first().map(|s| s.as_str())
}
@ -1037,7 +1037,7 @@ impl Hash for Attributes {
}
impl AttributesExt for Attributes {
fn lists<'a>(&'a self, name: Symbol) -> ListAttributesIter<'a> {
fn lists(&self, name: Symbol) -> ListAttributesIter<'_> {
self.other_attrs.lists(name)
}
}

2
src/librustdoc/html/render.rs
View File

@ -2541,7 +2541,7 @@ fn full_path(cx: &Context, item: &clean::Item) -> String {
s
}
fn shorter<'a>(s: Option<&'a str>) -> String {
fn shorter(s: Option<&str>) -> String {
match s {
Some(s) => s.lines()
.skip_while(|s| s.chars().all(|c| c.is_whitespace()))

4
src/librustdoc/html/static/rustdoc.css
View File

@ -146,6 +146,10 @@ img {
max-width: 100%;
}
li {
position: relative;
}
.source .content {
margin-top: 50px;
max-width: none;

2
src/librustdoc/html/toc.rs
View File

@ -119,7 +119,7 @@ impl TocBuilder {
/// Push a level `level` heading into the appropriate place in the
/// hierarchy, returning a string containing the section number in
/// `<num>.<num>.<num>` format.
pub fn push<'a>(&'a mut self, level: u32, name: String, id: String) -> &'a str {
pub fn push(&mut self, level: u32, name: String, id: String) -> &str {
assert!(level >= 1);
// collapse all previous sections into their parents until we

2
src/librustdoc/markdown.rs
View File

@ -17,7 +17,7 @@ use crate::html::markdown::{ErrorCodes, IdMap, Markdown, MarkdownWithToc, find_t
use crate::test::{TestOptions, Collector};
/// Separate any lines at the start of the file that begin with `# ` or `%`.
fn extract_leading_metadata<'a>(s: &'a str) -> (Vec<&'a str>, &'a str) {
fn extract_leading_metadata(s: &str) -> (Vec<&str>, &str) {
let mut metadata = Vec::new();
let mut count = 0;

4
src/libserialize/json.rs
View File

@ -1031,7 +1031,7 @@ impl Json {
/// If the Json value is an Object, returns the value associated with the provided key.
/// Otherwise, returns None.
pub fn find<'a>(&'a self, key: &str) -> Option<&'a Json>{
pub fn find(&self, key: &str) -> Option<&Json> {
match *self {
Json::Object(ref map) => map.get(key),
_ => None
@ -1052,7 +1052,7 @@ impl Json {
/// If the Json value is an Object, performs a depth-first search until
/// a value associated with the provided key is found. If no value is found
/// or the Json value is not an Object, returns `None`.
pub fn search<'a>(&'a self, key: &str) -> Option<&'a Json> {
pub fn search(&self, key: &str) -> Option<&Json> {
match self {
&Json::Object(ref map) => {
match map.get(key) {

2
src/libstd/sync/mpsc/sync.rs
View File

@ -140,7 +140,7 @@ fn wait_timeout_receiver<'a, 'b, T>(lock: &'a Mutex<State<T>>,
new_guard
}
fn abort_selection<'a, T>(guard: &mut MutexGuard<'a , State<T>>) -> bool {
fn abort_selection<T>(guard: &mut MutexGuard<'_, State<T>>) -> bool {
match mem::replace(&mut guard.blocker, NoneBlocked) {
NoneBlocked => true,
BlockedSender(token) => {

2
src/libstd/sys/redox/ext/net.rs
View File

@ -673,7 +673,7 @@ impl UnixListener {
/// }
/// ```
#[stable(feature = "unix_socket_redox", since = "1.29.0")]
pub fn incoming<'a>(&'a self) -> Incoming<'a> {
pub fn incoming(&self) -> Incoming<'_> {
Incoming { listener: self }
}
}

4
src/libstd/sys/unix/ext/net.rs
View File

@ -198,7 +198,7 @@ impl SocketAddr {
}
}
fn address<'a>(&'a self) -> AddressKind<'a> {
fn address(&self) -> AddressKind<'_> {
let len = self.len as usize - sun_path_offset(&self.addr);
let path = unsafe { mem::transmute::<&[libc::c_char], &[u8]>(&self.addr.sun_path) };
@ -894,7 +894,7 @@ impl UnixListener {
/// }
/// ```
#[stable(feature = "unix_socket", since = "1.10.0")]
pub fn incoming<'a>(&'a self) -> Incoming<'a> {
pub fn incoming(&self) -> Incoming<'_> {
Incoming { listener: self }
}
}

2
src/libstd/sys/windows/mod.rs
View File

@ -195,7 +195,7 @@ fn wide_char_to_multi_byte(code_page: u32,
}
}
pub fn truncate_utf16_at_nul<'a>(v: &'a [u16]) -> &'a [u16] {
pub fn truncate_utf16_at_nul(v: &[u16]) -> &[u16] {
match v.iter().position(|c| *c == 0) {
// don't include the 0
Some(i) => &v[..i],

2
src/libstd/sys/windows/path.rs
View File

@ -19,7 +19,7 @@ pub fn is_verbatim_sep(b: u8) -> bool {
b == b'\\'
}
pub fn parse_prefix<'a>(path: &'a OsStr) -> Option<Prefix<'a>> {
pub fn parse_prefix(path: &OsStr) -> Option<Prefix<'_>> {
use crate::path::Prefix::*;
unsafe {
// The unsafety here stems from converting between &OsStr and &[u8]

2
src/libstd/sys_common/io.rs
View File

@ -16,7 +16,7 @@ pub mod test {
p.join(path)
}
pub fn path<'a>(&'a self) -> &'a Path {
pub fn path(&self) -> &Path {
let TempDir(ref p) = *self;
p
}

50
src/libsyntax/feature_gate.rs
View File

@ -31,6 +31,7 @@ use crate::tokenstream::TokenTree;
use errors::{Applicability, DiagnosticBuilder, Handler};
use rustc_data_structures::fx::FxHashMap;
use rustc_data_structures::sync::Lock;
use rustc_target::spec::abi::Abi;
use syntax_pos::{Span, DUMMY_SP, MultiSpan};
use log::debug;
@ -573,6 +574,9 @@ declare_features! (
// Allows `impl Trait` with multiple unrelated lifetimes.
(active, member_constraints, "1.37.0", Some(61977), None),
// Allows `async || body` closures.
(active, async_closure, "1.37.0", Some(62290), None),
// -------------------------------------------------------------------------
// feature-group-end: actual feature gates
// -------------------------------------------------------------------------
@ -2191,9 +2195,6 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
"labels on blocks are unstable");
}
}
ast::ExprKind::Closure(_, ast::IsAsync::Async { .. }, ..) => {
gate_feature_post!(&self, async_await, e.span, "async closures are unstable");
}
ast::ExprKind::Async(..) => {
gate_feature_post!(&self, async_await, e.span, "async blocks are unstable");
}
@ -2527,6 +2528,10 @@ pub fn get_features(span_handler: &Handler, krate_attrs: &[ast::Attribute],
features
}
fn for_each_in_lock<T>(vec: &Lock<Vec<T>>, f: impl Fn(&T)) {
vec.borrow().iter().for_each(f);
}
pub fn check_crate(krate: &ast::Crate,
sess: &ParseSess,
features: &Features,
@ -2539,27 +2544,26 @@ pub fn check_crate(krate: &ast::Crate,
plugin_attributes,
};
sess
.param_attr_spans
.borrow()
.iter()
.for_each(|span| gate_feature!(
&ctx,
param_attrs,
*span,
"attributes on function parameters are unstable"
));
for_each_in_lock(&sess.param_attr_spans, |span| gate_feature!(
&ctx,
param_attrs,
*span,
"attributes on function parameters are unstable"
));
sess
.let_chains_spans
.borrow()
.iter()
.for_each(|span| gate_feature!(
&ctx,
let_chains,
*span,
"`let` expressions in this position are experimental"
));
for_each_in_lock(&sess.let_chains_spans, |span| gate_feature!(
&ctx,
let_chains,
*span,
"`let` expressions in this position are experimental"
));
for_each_in_lock(&sess.async_closure_spans, |span| gate_feature!(
&ctx,
async_closure,
*span,
"async closures are unstable"
));
let visitor = &mut PostExpansionVisitor {
context: &ctx,

1
src/libsyntax/parse/lexer/mod.rs
View File

@ -1452,6 +1452,7 @@ mod tests {
ambiguous_block_expr_parse: Lock::new(FxHashMap::default()),
param_attr_spans: Lock::new(Vec::new()),
let_chains_spans: Lock::new(Vec::new()),
async_closure_spans: Lock::new(Vec::new()),
}
}

3
src/libsyntax/parse/mod.rs
View File

@ -57,6 +57,8 @@ pub struct ParseSess {
pub param_attr_spans: Lock<Vec<Span>>,
// Places where `let` exprs were used and should be feature gated according to `let_chains`.
pub let_chains_spans: Lock<Vec<Span>>,
// Places where `async || ..` exprs were used and should be feature gated.
pub async_closure_spans: Lock<Vec<Span>>,
}
impl ParseSess {
@ -84,6 +86,7 @@ impl ParseSess {
ambiguous_block_expr_parse: Lock::new(FxHashMap::default()),
param_attr_spans: Lock::new(Vec::new()),
let_chains_spans: Lock::new(Vec::new()),
async_closure_spans: Lock::new(Vec::new()),
}
}

36
src/libsyntax/parse/parser.rs
View File

@ -3221,21 +3221,24 @@ impl<'a> Parser<'a> {
-> PResult<'a, P<Expr>>
{
let lo = self.token.span;
let movability = if self.eat_keyword(kw::Static) {
Movability::Static
} else {
Movability::Movable
};
let asyncness = if self.token.span.rust_2018() {
self.parse_asyncness()
} else {
IsAsync::NotAsync
};
let capture_clause = if self.eat_keyword(kw::Move) {
CaptureBy::Value
} else {
CaptureBy::Ref
};
if asyncness.is_async() {
// Feature gate `async ||` closures.
self.sess.async_closure_spans.borrow_mut().push(self.prev_span);
}
let capture_clause = self.parse_capture_clause();
let decl = self.parse_fn_block_decl()?;
let decl_hi = self.prev_span;
let body = match decl.output {
@ -3257,7 +3260,7 @@ impl<'a> Parser<'a> {
attrs))
}
// `else` token already eaten
/// `else` token already eaten
fn parse_else_expr(&mut self) -> PResult<'a, P<Expr>> {
if self.eat_keyword(kw::If) {
return self.parse_if_expr(ThinVec::new());
@ -3306,7 +3309,7 @@ impl<'a> Parser<'a> {
Ok(self.mk_expr(span, ExprKind::While(cond, body, opt_label), attrs))
}
// parse `loop {...}`, `loop` token already eaten
/// Parse `loop {...}`, `loop` token already eaten.
fn parse_loop_expr(&mut self, opt_label: Option<Label>,
span_lo: Span,
mut attrs: ThinVec<Attribute>) -> PResult<'a, P<Expr>> {
@ -3316,17 +3319,20 @@ impl<'a> Parser<'a> {
Ok(self.mk_expr(span, ExprKind::Loop(body, opt_label), attrs))
}
/// Parses an `async move {...}` expression.
pub fn parse_async_block(&mut self, mut attrs: ThinVec<Attribute>)
-> PResult<'a, P<Expr>>
{
let span_lo = self.token.span;
self.expect_keyword(kw::Async)?;
let capture_clause = if self.eat_keyword(kw::Move) {
/// Parse an optional `move` prefix to a closure lke construct.
fn parse_capture_clause(&mut self) -> CaptureBy {
if self.eat_keyword(kw::Move) {
CaptureBy::Value
} else {
CaptureBy::Ref
};
}
}
/// Parses an `async move? {...}` expression.
pub fn parse_async_block(&mut self, mut attrs: ThinVec<Attribute>) -> PResult<'a, P<Expr>> {
let span_lo = self.token.span;
self.expect_keyword(kw::Async)?;
let capture_clause = self.parse_capture_clause();
let (iattrs, body) = self.parse_inner_attrs_and_block()?;
attrs.extend(iattrs);
Ok(self.mk_expr(

1
src/libsyntax_pos/symbol.rs
View File

@ -146,6 +146,7 @@ symbols! {
associated_type_defaults,
associated_types,
async_await,
async_closure,
attr,
attributes,
attr_literals,

16
src/test/run-pass/async-await/async-fn-size.rs
View File

@ -1,6 +1,6 @@
// edition:2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
#[path = "../auxiliary/arc_wake.rs"]
mod arc_wake;
@ -58,31 +58,31 @@ fn wait(fut: impl Future<Output = u8>) -> u8 {
fn base() -> WakeOnceThenComplete { WakeOnceThenComplete(false, 1) }
async fn await1_level1() -> u8 {
await!(base())
base().await
}
async fn await2_level1() -> u8 {
await!(base()) + await!(base())
base().await + base().await
}
async fn await3_level1() -> u8 {
await!(base()) + await!(base()) + await!(base())
base().await + base().await + base().await
}
async fn await3_level2() -> u8 {
await!(await3_level1()) + await!(await3_level1()) + await!(await3_level1())
await3_level1().await + await3_level1().await + await3_level1().await
}
async fn await3_level3() -> u8 {
await!(await3_level2()) + await!(await3_level2()) + await!(await3_level2())
await3_level2().await + await3_level2().await + await3_level2().await
}
async fn await3_level4() -> u8 {
await!(await3_level3()) + await!(await3_level3()) + await!(await3_level3())
await3_level3().await + await3_level3().await + await3_level3().await
}
async fn await3_level5() -> u8 {
await!(await3_level4()) + await!(await3_level4()) + await!(await3_level4())
await3_level4().await + await3_level4().await + await3_level4().await
}
fn main() {

4
src/test/run-pass/async-await/issue-60709.rs
View File

@ -2,7 +2,7 @@
// handled incorrectly in generators.
// compile-flags: -Copt-level=z -Cdebuginfo=2 --edition=2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
#![allow(unused)]
use std::future::Future;
@ -22,7 +22,7 @@ impl Future for Never {
fn main() {
let fut = async {
let _rc = Rc::new(()); // Also crashes with Arc
await!(Never());
Never().await;
};
let _bla = fut; // Moving the future is required.
}

13
src/test/run-pass/intrinsics/intrinsic-uninit.rs
View File

@ -1,13 +0,0 @@
// run-pass
// pretty-expanded FIXME #23616
#![feature(intrinsics)]
mod rusti {
extern "rust-intrinsic" {
pub fn uninit<T>() -> T;
}
}
pub fn main() {
let _a : isize = unsafe {rusti::uninit()};
}

8
src/test/ui/async-await/async-await.rs
View File

@ -70,13 +70,6 @@ fn async_nonmove_block(x: u8) -> impl Future<Output = u8> {
}
}
fn async_closure(x: u8) -> impl Future<Output = u8> {
(async move |x: u8| -> u8 {
wake_and_yield_once().await;
x
})(x)
}
async fn async_fn(x: u8) -> u8 {
wake_and_yield_once().await;
x
@ -180,7 +173,6 @@ fn main() {
test! {
async_block,
async_nonmove_block,
async_closure,
async_fn,
generic_async_fn,
async_fn_with_internal_borrow,

12
src/test/ui/async-await/async-closure-matches-expr.rs Normal file
View File

@ -0,0 +1,12 @@
// compile-pass
// edition:2018
#![feature(async_await, async_closure)]
macro_rules! match_expr {
($x:expr) => {}
}
fn main() {
match_expr!(async || {});
}

81
src/test/ui/async-await/async-closure.rs Normal file
View File

@ -0,0 +1,81 @@
// run-pass
// edition:2018
// aux-build:arc_wake.rs
#![feature(async_await, async_closure)]
extern crate arc_wake;
use std::pin::Pin;
use std::future::Future;
use std::sync::{
Arc,
atomic::{self, AtomicUsize},
};
use std::task::{Context, Poll};
use arc_wake::ArcWake;
struct Counter {
wakes: AtomicUsize,
}
impl ArcWake for Counter {
fn wake(self: Arc<Self>) {
Self::wake_by_ref(&self)
}
fn wake_by_ref(arc_self: &Arc<Self>) {
arc_self.wakes.fetch_add(1, atomic::Ordering::SeqCst);
}
}
struct WakeOnceThenComplete(bool);
fn wake_and_yield_once() -> WakeOnceThenComplete { WakeOnceThenComplete(false) }
impl Future for WakeOnceThenComplete {
type Output = ();
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<()> {
if self.0 {
Poll::Ready(())
} else {
cx.waker().wake_by_ref();
self.0 = true;
Poll::Pending
}
}
}
fn async_closure(x: u8) -> impl Future<Output = u8> {
(async move |x: u8| -> u8 {
wake_and_yield_once().await;
x
})(x)
}
fn test_future_yields_once_then_returns<F, Fut>(f: F)
where
F: FnOnce(u8) -> Fut,
Fut: Future<Output = u8>,
{
let mut fut = Box::pin(f(9));
let counter = Arc::new(Counter { wakes: AtomicUsize::new(0) });
let waker = ArcWake::into_waker(counter.clone());
let mut cx = Context::from_waker(&waker);
assert_eq!(0, counter.wakes.load(atomic::Ordering::SeqCst));
assert_eq!(Poll::Pending, fut.as_mut().poll(&mut cx));
assert_eq!(1, counter.wakes.load(atomic::Ordering::SeqCst));
assert_eq!(Poll::Ready(9), fut.as_mut().poll(&mut cx));
}
fn main() {
macro_rules! test {
($($fn_name:expr,)*) => { $(
test_future_yields_once_then_returns($fn_name);
)* }
}
test! {
async_closure,
}
}

17
src/test/ui/async-await/async-error-span.rs Normal file
View File

@ -0,0 +1,17 @@
// edition:2018
#![feature(async_await)]
// Regression test for issue #62382
use std::future::Future;
fn get_future() -> impl Future<Output = ()> {
panic!()
}
async fn foo() {
let a; //~ ERROR type inside `async` object must be known in this context
get_future().await;
}
fn main() {}

15
src/test/ui/async-await/async-error-span.stderr Normal file
View File

@ -0,0 +1,15 @@
error[E0698]: type inside `async` object must be known in this context
--> $DIR/async-error-span.rs:13:9
|
LL | let a;
| ^ cannot infer type
|
note: the type is part of the `async` object because of this `await`
--> $DIR/async-error-span.rs:14:5
|
LL | get_future().await;
| ^^^^^^^^^^^^^^^^^^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0698`.

2
src/test/ui/async-await/async-fn-path-elision.rs
View File

@ -1,6 +1,6 @@
// edition:2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
#![allow(dead_code)]
struct HasLifetime<'a>(&'a bool);

3
src/test/ui/async-await/async-matches-expr.rs
View File

@ -1,7 +1,7 @@
// build-pass (FIXME(62277): could be check-pass?)
// edition:2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
macro_rules! match_expr {
($x:expr) => {}
@ -9,5 +9,4 @@ macro_rules! match_expr {
fn main() {
match_expr!(async {});
match_expr!(async || {});
}

4
src/test/ui/async-await/async-with-closure.rs
View File

@ -1,7 +1,7 @@
// build-pass (FIXME(62277): could be check-pass?)
// edition:2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
trait MyClosure {
type Args;
@ -20,7 +20,7 @@ async fn get_future<C: ?Sized + MyClosure>(_stream: MyStream<C>) {}
async fn f() {
let messages: MyStream<dyn FnMut()> = unimplemented!();
await!(get_future(messages));
get_future(messages).await;
}
fn main() {}

2
src/test/ui/async-await/await-keyword/2018-edition-error-in-non-macro-position.rs
View File

@ -1,7 +1,7 @@
// edition:2018
#![allow(non_camel_case_types)]
#![feature(async_await, await_macro)]
#![feature(async_await)]
mod outer_mod {
pub mod await { //~ ERROR expected identifier, found reserved keyword `await`

2
src/test/ui/async-await/await-macro.rs
View File

@ -3,7 +3,7 @@
// edition:2018
// aux-build:arc_wake.rs
#![feature(async_await, await_macro)]
#![feature(async_await, async_closure, await_macro)]
extern crate arc_wake;

16
src/test/ui/async-await/await-unsize.rs Normal file
View File

@ -0,0 +1,16 @@
// Regression test for #62312
// check-pass
// edition:2018
#![feature(async_await)]
async fn make_boxed_object() -> Box<dyn Send> {
Box::new(()) as _
}
async fn await_object() {
let _ = make_boxed_object().await;
}
fn main() {}

2
src/test/ui/async-await/drop-order/drop-order-for-async-fn-parameters-by-ref-binding.rs
View File

@ -3,7 +3,7 @@
// run-pass
#![allow(unused_variables)]
#![feature(async_await, await_macro)]
#![feature(async_await)]
// Test that the drop order for parameters in a fn and async fn matches up. Also test that
// parameters (used or unused) are not dropped until the async fn completes execution.

2
src/test/ui/async-await/drop-order/drop-order-for-async-fn-parameters.rs
View File

@ -3,7 +3,7 @@
// run-pass
#![allow(unused_variables)]
#![feature(async_await, await_macro)]
#![feature(async_await)]
// Test that the drop order for parameters in a fn and async fn matches up. Also test that
// parameters (used or unused) are not dropped until the async fn completes execution.

8
src/test/ui/async-await/feature-async-closure.rs Normal file
View File

@ -0,0 +1,8 @@
// edition:2018
// gate-test-async_closure
fn f() {
let _ = async || {}; //~ ERROR async closures are unstable
}
fn main() {}

12
src/test/ui/async-await/feature-async-closure.stderr Normal file
View File

@ -0,0 +1,12 @@
error[E0658]: async closures are unstable
--> $DIR/feature-async-closure.rs:5:13
|
LL | let _ = async || {};
| ^^^^^
|
= note: for more information, see https://github.com/rust-lang/rust/issues/62290
= help: add #![feature(async_closure)] to the crate attributes to enable
error: aborting due to previous error
For more information about this error, try `rustc --explain E0658`.

6
src/test/ui/async-await/issues/issue-53249.rs
View File

@ -1,7 +1,7 @@
// build-pass (FIXME(62277): could be check-pass?)
// edition:2018
#![feature(arbitrary_self_types, async_await, await_macro)]
#![feature(arbitrary_self_types, async_await)]
use std::task::{self, Poll};
use std::future::Future;
@ -37,11 +37,11 @@ impl<R, F> Future for Lazy<F>
async fn __receive<WantFn, Fut>(want: WantFn) -> ()
where Fut: Future<Output = ()>, WantFn: Fn(&Box<dyn Send + 'static>) -> Fut,
{
await!(lazy(|_| ()));
lazy(|_| ()).await;
}
pub fn basic_spawn_receive() {
async { await!(__receive(|_| async { () })) };
async { __receive(|_| async { () }).await };
}
fn main() {}

2
src/test/ui/async-await/issues/issue-54974.rs
View File

@ -1,7 +1,7 @@
// build-pass (FIXME(62277): could be check-pass?)
// edition:2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
use std::sync::Arc;

4
src/test/ui/async-await/issues/issue-55324.rs
View File

@ -1,13 +1,13 @@
// build-pass (FIXME(62277): could be check-pass?)
// edition:2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
use std::future::Future;
#[allow(unused)]
async fn foo<F: Future<Output = i32>>(x: &i32, future: F) -> i32 {
let y = await!(future);
let y = future.await;
*x + y
}

2
src/test/ui/async-await/issues/issue-58885.rs
View File

@ -1,7 +1,7 @@
// build-pass (FIXME(62277): could be check-pass?)
// edition:2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
struct Xyz {
a: u64,

2
src/test/ui/async-await/issues/issue-59001.rs
View File

@ -1,7 +1,7 @@
// build-pass (FIXME(62277): could be check-pass?)
// edition:2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
use std::future::Future;

4
src/test/ui/async-await/issues/issue-59972.rs
View File

@ -2,7 +2,7 @@
// compile-flags: --edition=2018
#![feature(async_await, await_macro)]
#![feature(async_await)]
pub enum Uninhabited { }
@ -15,7 +15,7 @@ async fn noop() { }
#[allow(unused)]
async fn contains_never() {
let error = uninhabited_async();
await!(noop());
noop().await;
let error2 = error;
}

2
src/test/ui/async-await/issues/issue-62009.rs → src/test/ui/async-await/issues/issue-62009-1.rs
View File

@ -11,8 +11,6 @@ fn main() {
//~^ ERROR `await` is only allowed inside `async` functions and blocks
let task1 = print_dur().await;
}.await;
(async || 2333)().await;
//~^ ERROR `await` is only allowed inside `async` functions and blocks
(|_| 2333).await;
//~^ ERROR `await` is only allowed inside `async` functions and blocks
//~^^ ERROR

23
src/test/ui/async-await/issues/issue-62009.stderr → src/test/ui/async-await/issues/issue-62009-1.stderr
View File

@ -1,5 +1,5 @@
error[E0728]: `await` is only allowed inside `async` functions and blocks
--> $DIR/issue-62009.rs:8:5
--> $DIR/issue-62009-1.rs:8:5
|
LL | fn main() {
| ---- this is not `async`
@ -7,7 +7,7 @@ LL | async { let (); }.await;
| ^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
error[E0728]: `await` is only allowed inside `async` functions and blocks
--> $DIR/issue-62009.rs:10:5
--> $DIR/issue-62009-1.rs:10:5
|
LL | fn main() {
| ---- this is not `async`
@ -19,16 +19,7 @@ LL | | }.await;
| |___________^ only allowed inside `async` functions and blocks
error[E0728]: `await` is only allowed inside `async` functions and blocks
--> $DIR/issue-62009.rs:14:5
|
LL | fn main() {
| ---- this is not `async`
...
LL | (async || 2333)().await;
| ^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
error[E0728]: `await` is only allowed inside `async` functions and blocks
--> $DIR/issue-62009.rs:16:5
--> $DIR/issue-62009-1.rs:14:5
|
LL | fn main() {
| ---- this is not `async`
@ -36,14 +27,14 @@ LL | fn main() {
LL | (|_| 2333).await;
| ^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
error[E0277]: the trait bound `[closure@$DIR/issue-62009.rs:16:5: 16:15]: std::future::Future` is not satisfied
--> $DIR/issue-62009.rs:16:5
error[E0277]: the trait bound `[closure@$DIR/issue-62009-1.rs:14:5: 14:15]: std::future::Future` is not satisfied
--> $DIR/issue-62009-1.rs:14:5
|
LL | (|_| 2333).await;
| ^^^^^^^^^^^^^^^^ the trait `std::future::Future` is not implemented for `[closure@$DIR/issue-62009.rs:16:5: 16:15]`
| ^^^^^^^^^^^^^^^^ the trait `std::future::Future` is not implemented for `[closure@$DIR/issue-62009-1.rs:14:5: 14:15]`
|
= note: required by `std::future::poll_with_tls_context`
error: aborting due to 5 previous errors
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0277`.

10
src/test/ui/async-await/issues/issue-62009-2.rs Normal file
View File

@ -0,0 +1,10 @@
// edition:2018
#![feature(async_await, async_closure)]
async fn print_dur() {}
fn main() {
(async || 2333)().await;
//~^ ERROR `await` is only allowed inside `async` functions and blocks
}

10
src/test/ui/async-await/issues/issue-62009-2.stderr Normal file
View File

@ -0,0 +1,10 @@
error[E0728]: `await` is only allowed inside `async` functions and blocks
--> $DIR/issue-62009-2.rs:8:5
|
LL | fn main() {
| ---- this is not `async`
LL | (async || 2333)().await;
| ^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
error: aborting due to previous error

2
src/test/ui/async-await/multiple-lifetimes/hrtb.rs
View File

@ -3,7 +3,7 @@
// Test that we can use async fns with multiple arbitrary lifetimes.
#![feature(arbitrary_self_types, async_await, await_macro)]
#![feature(async_await)]
#![allow(dead_code)]
use std::ops::Add;

2
src/test/ui/async-await/no-args-non-move-async-closure.rs
View File

@ -1,6 +1,6 @@
// edition:2018
#![feature(async_await, await_macro)]
#![feature(async_await, async_closure)]
fn main() {
let _ = async |x: u8| {};

4
src/test/ui/async-await/recursive-async-impl-trait-type.rs
View File

@ -2,10 +2,10 @@
// Test that impl trait does not allow creating recursive types that are
// otherwise forbidden when using `async` and `await`.
#![feature(await_macro, async_await, generators)]
#![feature(async_await)]
async fn recursive_async_function() -> () { //~ ERROR
await!(recursive_async_function());
recursive_async_function().await;
}
fn main() {}

23
src/test/ui/async-await/suggest-missing-await-closure.fixed Normal file
View File

@ -0,0 +1,23 @@
// edition:2018
// run-rustfix
#![feature(async_await, async_closure)]
fn take_u32(_x: u32) {}
async fn make_u32() -> u32 {
22
}
#[allow(unused)]
async fn suggest_await_in_async_closure() {
async || {
let x = make_u32();
take_u32(x.await)
//~^ ERROR mismatched types [E0308]
//~| HELP consider using `.await` here
//~| SUGGESTION x.await
};
}
fn main() {}

23
src/test/ui/async-await/suggest-missing-await-closure.rs Normal file
View File

@ -0,0 +1,23 @@
// edition:2018
// run-rustfix
#![feature(async_await, async_closure)]
fn take_u32(_x: u32) {}
async fn make_u32() -> u32 {
22
}
#[allow(unused)]
async fn suggest_await_in_async_closure() {
async || {
let x = make_u32();
take_u32(x)
//~^ ERROR mismatched types [E0308]
//~| HELP consider using `.await` here
//~| SUGGESTION x.await
};
}
fn main() {}

15
src/test/ui/async-await/suggest-missing-await-closure.stderr Normal file
View File

@ -0,0 +1,15 @@
error[E0308]: mismatched types
--> $DIR/suggest-missing-await-closure.rs:16:18
|
LL | take_u32(x)
| ^
| |
| expected u32, found opaque type
| help: consider using `.await` here: `x.await`
|
= note: expected type `u32`
found type `impl std::future::Future`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0308`.

11
src/test/ui/async-await/suggest-missing-await.fixed
View File

@ -18,15 +18,4 @@ async fn suggest_await_in_async_fn() {
//~| SUGGESTION x.await
}
#[allow(unused)]
async fn suggest_await_in_async_closure() {
async || {
let x = make_u32();
take_u32(x.await)
//~^ ERROR mismatched types [E0308]
//~| HELP consider using `.await` here
//~| SUGGESTION x.await
};
}
fn main() {}

11
src/test/ui/async-await/suggest-missing-await.rs
View File

@ -18,15 +18,4 @@ async fn suggest_await_in_async_fn() {
//~| SUGGESTION x.await
}
#[allow(unused)]
async fn suggest_await_in_async_closure() {
async || {
let x = make_u32();
take_u32(x)
//~^ ERROR mismatched types [E0308]
//~| HELP consider using `.await` here
//~| SUGGESTION x.await
};
}
fn main() {}

14
src/test/ui/async-await/suggest-missing-await.stderr
View File

@ -10,18 +10,6 @@ LL | take_u32(x)
= note: expected type `u32`
found type `impl std::future::Future`
error[E0308]: mismatched types
--> $DIR/suggest-missing-await.rs:25:18
|
LL | take_u32(x)
| ^
| |
| expected u32, found opaque type
| help: consider using `.await` here: `x.await`
|
= note: expected type `u32`
found type `impl std::future::Future`
error: aborting due to 2 previous errors
error: aborting due to previous error
For more information about this error, try `rustc --explain E0308`.

1
src/test/ui/feature-gates/feature-gate-async-await.rs
View File

@ -15,5 +15,4 @@ async fn foo() {} //~ ERROR async fn is unstable
fn main() {
let _ = async {}; //~ ERROR async blocks are unstable
let _ = async || {}; //~ ERROR async closures are unstable
}

11
src/test/ui/feature-gates/feature-gate-async-await.stderr
View File

@ -40,15 +40,6 @@ LL | let _ = async {};
= note: for more information, see https://github.com/rust-lang/rust/issues/50547
= help: add #![feature(async_await)] to the crate attributes to enable
error[E0658]: async closures are unstable
--> $DIR/feature-gate-async-await.rs:18:13
|
LL | let _ = async || {};
| ^^^^^^^^^^^
|
= note: for more information, see https://github.com/rust-lang/rust/issues/50547
= help: add #![feature(async_await)] to the crate attributes to enable
error: aborting due to 6 previous errors
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0658`.

1
src/test/ui/init-unsafe.rs
View File

@ -1,3 +1,4 @@
#![allow(deprecated)]
#![feature(core_intrinsics)]
use std::intrinsics::{init};

2
src/test/ui/init-unsafe.stderr
View File

@ -1,5 +1,5 @@
error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
--> $DIR/init-unsafe.rs:7:17
--> $DIR/init-unsafe.rs:8:17
|
LL | let stuff = init::<isize>();
| ^^^^^^^^^^^^^^^ call to unsafe function

8
src/test/ui/loops/loop-break-unsize.rs Normal file
View File

@ -0,0 +1,8 @@
// Regression test for #62312
// check-pass
fn main() {
let _ = loop {
break Box::new(()) as Box<dyn Send>;
};
}