mirror of
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Auto merge of #125313 - matthiaskrgr:rollup-65etxv0, r=matthiaskrgr
Rollup of 5 pull requests Successful merges: - #125034 (Weekly `cargo update`) - #125093 (Add `fn into_raw_with_allocator` to Rc/Arc/Weak.) - #125282 (Never type unsafe lint improvements) - #125301 (fix suggestion in E0373 for !Unpin coroutines) - #125302 (defrost `RUST_MIN_STACK=ice rustc hello.rs`) r? `@ghost` `@rustbot` modify labels: rollup
This commit is contained in:
bors
commit
e8ada6ab25
221
Cargo.lock
221
Cargo.lock
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|
||||
"syn 2.0.64",
|
||||
"synstructure",
|
||||
]
|
||||
|
||||
@ -4957,7 +5018,7 @@ dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"serde",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -5014,9 +5075,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "rustversion"
|
||||
version = "1.0.16"
|
||||
version = "1.0.17"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "092474d1a01ea8278f69e6a358998405fae5b8b963ddaeb2b0b04a128bf1dfb0"
|
||||
checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
|
||||
|
||||
[[package]]
|
||||
name = "ruzstd"
|
||||
@ -5125,22 +5186,22 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "serde"
|
||||
version = "1.0.201"
|
||||
version = "1.0.202"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "780f1cebed1629e4753a1a38a3c72d30b97ec044f0aef68cb26650a3c5cf363c"
|
||||
checksum = "226b61a0d411b2ba5ff6d7f73a476ac4f8bb900373459cd00fab8512828ba395"
|
||||
dependencies = [
|
||||
"serde_derive",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "serde_derive"
|
||||
version = "1.0.201"
|
||||
version = "1.0.202"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c5e405930b9796f1c00bee880d03fc7e0bb4b9a11afc776885ffe84320da2865"
|
||||
checksum = "6048858004bcff69094cd972ed40a32500f153bd3be9f716b2eed2e8217c4838"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -5157,9 +5218,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "serde_spanned"
|
||||
version = "0.6.5"
|
||||
version = "0.6.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "eb3622f419d1296904700073ea6cc23ad690adbd66f13ea683df73298736f0c1"
|
||||
checksum = "79e674e01f999af37c49f70a6ede167a8a60b2503e56c5599532a65baa5969a0"
|
||||
dependencies = [
|
||||
"serde",
|
||||
]
|
||||
@ -5400,12 +5461,6 @@ dependencies = [
|
||||
"quote",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "strsim"
|
||||
version = "0.10.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
|
||||
|
||||
[[package]]
|
||||
name = "strsim"
|
||||
version = "0.11.1"
|
||||
@ -5452,9 +5507,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "2.0.62"
|
||||
version = "2.0.64"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9f660c3bfcefb88c538776b6685a0c472e3128b51e74d48793dc2a488196e8eb"
|
||||
checksum = "7ad3dee41f36859875573074334c200d1add8e4a87bb37113ebd31d926b7b11f"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
@ -5475,7 +5530,7 @@ checksum = "c8af7666ab7b6390ab78131fb5b0fce11d6b7a6951602017c35fa82800708971"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -5626,22 +5681,22 @@ checksum = "a38c90d48152c236a3ab59271da4f4ae63d678c5d7ad6b7714d7cb9760be5e4b"
|
||||
|
||||
[[package]]
|
||||
name = "thiserror"
|
||||
version = "1.0.60"
|
||||
version = "1.0.61"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "579e9083ca58dd9dcf91a9923bb9054071b9ebbd800b342194c9feb0ee89fc18"
|
||||
checksum = "c546c80d6be4bc6a00c0f01730c08df82eaa7a7a61f11d656526506112cc1709"
|
||||
dependencies = [
|
||||
"thiserror-impl",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thiserror-impl"
|
||||
version = "1.0.60"
|
||||
version = "1.0.61"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e2470041c06ec3ac1ab38d0356a6119054dedaea53e12fbefc0de730a1c08524"
|
||||
checksum = "46c3384250002a6d5af4d114f2845d37b57521033f30d5c3f46c4d70e1197533"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -5810,9 +5865,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "toml_datetime"
|
||||
version = "0.6.5"
|
||||
version = "0.6.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3550f4e9685620ac18a50ed434eb3aec30db8ba93b0287467bca5826ea25baf1"
|
||||
checksum = "4badfd56924ae69bcc9039335b2e017639ce3f9b001c393c1b2d1ef846ce2cbf"
|
||||
dependencies = [
|
||||
"serde",
|
||||
]
|
||||
@ -5862,7 +5917,7 @@ checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -6068,7 +6123,7 @@ checksum = "1ed7f4237ba393424195053097c1516bd4590dc82b84f2f97c5c69e12704555b"
|
||||
dependencies = [
|
||||
"proc-macro-hack",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
"unic-langid-impl",
|
||||
]
|
||||
|
||||
@ -6300,7 +6355,7 @@ dependencies = [
|
||||
"once_cell",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
"wasm-bindgen-shared",
|
||||
]
|
||||
|
||||
@ -6334,7 +6389,7 @@ checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
"wasm-bindgen-backend",
|
||||
"wasm-bindgen-shared",
|
||||
]
|
||||
@ -6425,7 +6480,7 @@ dependencies = [
|
||||
"rayon",
|
||||
"serde",
|
||||
"serde_json",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
"windows-metadata",
|
||||
]
|
||||
|
||||
@ -6657,7 +6712,7 @@ checksum = "9e6936f0cce458098a201c245a11bef556c6a0181129c7034d10d76d1ec3a2b8"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
"synstructure",
|
||||
]
|
||||
|
||||
@ -6678,7 +6733,7 @@ checksum = "15e934569e47891f7d9411f1a451d947a60e000ab3bd24fbb970f000387d1b3b"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@ -6698,7 +6753,7 @@ checksum = "e6a647510471d372f2e6c2e6b7219e44d8c574d24fdc11c610a61455782f18c3"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
"synstructure",
|
||||
]
|
||||
|
||||
@ -6721,7 +6776,7 @@ checksum = "7b4e5997cbf58990550ef1f0e5124a05e47e1ebd33a84af25739be6031a62c20"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.62",
|
||||
"syn 2.0.64",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
|
||||
@ -3343,6 +3343,10 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
|
||||
} else if string.starts_with("gen") {
|
||||
// `gen` is 3 chars long
|
||||
Some(3)
|
||||
} else if string.starts_with("static") {
|
||||
// `static` is 6 chars long
|
||||
// This is used for `!Unpin` coroutines
|
||||
Some(6)
|
||||
} else {
|
||||
None
|
||||
};
|
||||
|
||||
@ -364,41 +364,11 @@ impl<'tcx> FnCtxt<'_, 'tcx> {
|
||||
};
|
||||
|
||||
let mut fallback_to = |ty| {
|
||||
let unsafe_infer_vars = unsafe_infer_vars.get_or_init(|| {
|
||||
let unsafe_infer_vars = compute_unsafe_infer_vars(self.root_ctxt, self.body_id);
|
||||
debug!(?unsafe_infer_vars);
|
||||
unsafe_infer_vars
|
||||
});
|
||||
|
||||
let affected_unsafe_infer_vars =
|
||||
graph::depth_first_search_as_undirected(&coercion_graph, root_vid)
|
||||
.filter_map(|x| unsafe_infer_vars.get(&x).copied())
|
||||
.collect::<Vec<_>>();
|
||||
|
||||
for (hir_id, span, reason) in affected_unsafe_infer_vars {
|
||||
self.tcx.emit_node_span_lint(
|
||||
lint::builtin::NEVER_TYPE_FALLBACK_FLOWING_INTO_UNSAFE,
|
||||
hir_id,
|
||||
span,
|
||||
match reason {
|
||||
UnsafeUseReason::Call => {
|
||||
errors::NeverTypeFallbackFlowingIntoUnsafe::Call
|
||||
}
|
||||
UnsafeUseReason::Method => {
|
||||
errors::NeverTypeFallbackFlowingIntoUnsafe::Method
|
||||
}
|
||||
UnsafeUseReason::Path => {
|
||||
errors::NeverTypeFallbackFlowingIntoUnsafe::Path
|
||||
}
|
||||
UnsafeUseReason::UnionField => {
|
||||
errors::NeverTypeFallbackFlowingIntoUnsafe::UnionField
|
||||
}
|
||||
UnsafeUseReason::Deref => {
|
||||
errors::NeverTypeFallbackFlowingIntoUnsafe::Deref
|
||||
}
|
||||
},
|
||||
);
|
||||
}
|
||||
self.lint_never_type_fallback_flowing_into_unsafe_code(
|
||||
&unsafe_infer_vars,
|
||||
&coercion_graph,
|
||||
root_vid,
|
||||
);
|
||||
|
||||
diverging_fallback.insert(diverging_ty, ty);
|
||||
};
|
||||
@ -464,6 +434,41 @@ impl<'tcx> FnCtxt<'_, 'tcx> {
|
||||
diverging_fallback
|
||||
}
|
||||
|
||||
fn lint_never_type_fallback_flowing_into_unsafe_code(
|
||||
&self,
|
||||
unsafe_infer_vars: &OnceCell<UnordMap<ty::TyVid, (HirId, Span, UnsafeUseReason)>>,
|
||||
coercion_graph: &VecGraph<ty::TyVid, true>,
|
||||
root_vid: ty::TyVid,
|
||||
) {
|
||||
let unsafe_infer_vars = unsafe_infer_vars.get_or_init(|| {
|
||||
let unsafe_infer_vars = compute_unsafe_infer_vars(self.root_ctxt, self.body_id);
|
||||
debug!(?unsafe_infer_vars);
|
||||
unsafe_infer_vars
|
||||
});
|
||||
|
||||
let affected_unsafe_infer_vars =
|
||||
graph::depth_first_search_as_undirected(&coercion_graph, root_vid)
|
||||
.filter_map(|x| unsafe_infer_vars.get(&x).copied())
|
||||
.collect::<Vec<_>>();
|
||||
|
||||
for (hir_id, span, reason) in affected_unsafe_infer_vars {
|
||||
self.tcx.emit_node_span_lint(
|
||||
lint::builtin::NEVER_TYPE_FALLBACK_FLOWING_INTO_UNSAFE,
|
||||
hir_id,
|
||||
span,
|
||||
match reason {
|
||||
UnsafeUseReason::Call => errors::NeverTypeFallbackFlowingIntoUnsafe::Call,
|
||||
UnsafeUseReason::Method => errors::NeverTypeFallbackFlowingIntoUnsafe::Method,
|
||||
UnsafeUseReason::Path => errors::NeverTypeFallbackFlowingIntoUnsafe::Path,
|
||||
UnsafeUseReason::UnionField => {
|
||||
errors::NeverTypeFallbackFlowingIntoUnsafe::UnionField
|
||||
}
|
||||
UnsafeUseReason::Deref => errors::NeverTypeFallbackFlowingIntoUnsafe::Deref,
|
||||
},
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
/// Returns a graph whose nodes are (unresolved) inference variables and where
|
||||
/// an edge `?A -> ?B` indicates that the variable `?A` is coerced to `?B`.
|
||||
fn create_coercion_graph(&self) -> VecGraph<ty::TyVid, true> {
|
||||
|
||||
@ -389,6 +389,7 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
|
||||
let hash_kind = config.opts.unstable_opts.src_hash_algorithm(&target);
|
||||
|
||||
util::run_in_thread_pool_with_globals(
|
||||
&early_dcx,
|
||||
config.opts.edition,
|
||||
config.opts.unstable_opts.threads,
|
||||
SourceMapInputs { file_loader, path_mapping, hash_kind },
|
||||
|
||||
@ -51,20 +51,38 @@ pub fn add_configuration(cfg: &mut Cfg, sess: &mut Session, codegen_backend: &dy
|
||||
pub static STACK_SIZE: OnceLock<usize> = OnceLock::new();
|
||||
pub const DEFAULT_STACK_SIZE: usize = 8 * 1024 * 1024;
|
||||
|
||||
fn init_stack_size() -> usize {
|
||||
fn init_stack_size(early_dcx: &EarlyDiagCtxt) -> usize {
|
||||
// Obey the environment setting or default
|
||||
*STACK_SIZE.get_or_init(|| {
|
||||
env::var_os("RUST_MIN_STACK")
|
||||
.map(|os_str| os_str.to_string_lossy().into_owned())
|
||||
// ignore if it is set to nothing
|
||||
.filter(|s| s.trim() != "")
|
||||
.map(|s| s.trim().parse::<usize>().unwrap())
|
||||
.as_ref()
|
||||
.map(|os_str| os_str.to_string_lossy())
|
||||
// if someone finds out `export RUST_MIN_STACK=640000` isn't enough stack
|
||||
// they might try to "unset" it by running `RUST_MIN_STACK= rustc code.rs`
|
||||
// this is wrong, but std would nonetheless "do what they mean", so let's do likewise
|
||||
.filter(|s| !s.trim().is_empty())
|
||||
// rustc is a batch program, so error early on inputs which are unlikely to be intended
|
||||
// so no one thinks we parsed them setting `RUST_MIN_STACK="64 megabytes"`
|
||||
// FIXME: we could accept `RUST_MIN_STACK=64MB`, perhaps?
|
||||
.map(|s| {
|
||||
let s = s.trim();
|
||||
// FIXME(workingjubilee): add proper diagnostics when we factor out "pre-run" setup
|
||||
#[allow(rustc::untranslatable_diagnostic, rustc::diagnostic_outside_of_impl)]
|
||||
s.parse::<usize>().unwrap_or_else(|_| {
|
||||
let mut err = early_dcx.early_struct_fatal(format!(
|
||||
r#"`RUST_MIN_STACK` should be a number of bytes, but was "{s}""#,
|
||||
));
|
||||
err.note("you can also unset `RUST_MIN_STACK` to use the default stack size");
|
||||
err.emit()
|
||||
})
|
||||
})
|
||||
// otherwise pick a consistent default
|
||||
.unwrap_or(DEFAULT_STACK_SIZE)
|
||||
})
|
||||
}
|
||||
|
||||
fn run_in_thread_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: Send>(
|
||||
thread_stack_size: usize,
|
||||
edition: Edition,
|
||||
sm_inputs: SourceMapInputs,
|
||||
f: F,
|
||||
@ -75,7 +93,7 @@ fn run_in_thread_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: Send>(
|
||||
// the parallel compiler, in particular to ensure there is no accidental
|
||||
// sharing of data between the main thread and the compilation thread
|
||||
// (which might cause problems for the parallel compiler).
|
||||
let builder = thread::Builder::new().name("rustc".to_string()).stack_size(init_stack_size());
|
||||
let builder = thread::Builder::new().name("rustc".to_string()).stack_size(thread_stack_size);
|
||||
|
||||
// We build the session globals and run `f` on the spawned thread, because
|
||||
// `SessionGlobals` does not impl `Send` in the non-parallel compiler.
|
||||
@ -100,16 +118,19 @@ fn run_in_thread_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: Send>(
|
||||
|
||||
#[cfg(not(parallel_compiler))]
|
||||
pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: Send>(
|
||||
thread_builder_diag: &EarlyDiagCtxt,
|
||||
edition: Edition,
|
||||
_threads: usize,
|
||||
sm_inputs: SourceMapInputs,
|
||||
f: F,
|
||||
) -> R {
|
||||
run_in_thread_with_globals(edition, sm_inputs, f)
|
||||
let thread_stack_size = init_stack_size(thread_builder_diag);
|
||||
run_in_thread_with_globals(thread_stack_size, edition, sm_inputs, f)
|
||||
}
|
||||
|
||||
#[cfg(parallel_compiler)]
|
||||
pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: Send>(
|
||||
thread_builder_diag: &EarlyDiagCtxt,
|
||||
edition: Edition,
|
||||
threads: usize,
|
||||
sm_inputs: SourceMapInputs,
|
||||
@ -121,10 +142,12 @@ pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce(CurrentGcx) -> R + Send,
|
||||
use rustc_query_system::query::{break_query_cycles, QueryContext};
|
||||
use std::process;
|
||||
|
||||
let thread_stack_size = init_stack_size(thread_builder_diag);
|
||||
|
||||
let registry = sync::Registry::new(std::num::NonZero::new(threads).unwrap());
|
||||
|
||||
if !sync::is_dyn_thread_safe() {
|
||||
return run_in_thread_with_globals(edition, sm_inputs, |current_gcx| {
|
||||
return run_in_thread_with_globals(thread_stack_size, edition, sm_inputs, |current_gcx| {
|
||||
// Register the thread for use with the `WorkerLocal` type.
|
||||
registry.register();
|
||||
|
||||
@ -167,7 +190,7 @@ pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce(CurrentGcx) -> R + Send,
|
||||
})
|
||||
.unwrap();
|
||||
})
|
||||
.stack_size(init_stack_size());
|
||||
.stack_size(thread_stack_size);
|
||||
|
||||
// We create the session globals on the main thread, then create the thread
|
||||
// pool. Upon creation, each worker thread created gets a copy of the
|
||||
|
||||
@ -4263,8 +4263,7 @@ declare_lint! {
|
||||
///
|
||||
/// // where absurd is a function with the following signature
|
||||
/// // (it's sound, because `!` always marks unreachable code):
|
||||
/// fn absurd<T>(_: !) -> T { ... }
|
||||
// FIXME: use `core::convert::absurd` here instead, once it's merged
|
||||
/// fn absurd<T>(never: !) -> T { ... }
|
||||
/// ```
|
||||
///
|
||||
/// While it's convenient to be able to use non-diverging code in one of the branches (like
|
||||
@ -4321,7 +4320,12 @@ declare_lint! {
|
||||
/// [`()`]: https://doc.rust-lang.org/core/primitive.unit.html
|
||||
pub NEVER_TYPE_FALLBACK_FLOWING_INTO_UNSAFE,
|
||||
Warn,
|
||||
"never type fallback affecting unsafe function calls"
|
||||
"never type fallback affecting unsafe function calls",
|
||||
@future_incompatible = FutureIncompatibleInfo {
|
||||
reason: FutureIncompatibilityReason::FutureReleaseSemanticsChange,
|
||||
reference: "issue #123748 <https://github.com/rust-lang/rust/issues/123748>",
|
||||
};
|
||||
report_in_external_macro
|
||||
}
|
||||
|
||||
declare_lint! {
|
||||
|
||||
@ -1356,6 +1356,33 @@ impl<T: ?Sized, A: Allocator> Rc<T, A> {
|
||||
ptr
|
||||
}
|
||||
|
||||
/// Consumes the `Rc`, returning the wrapped pointer and allocator.
|
||||
///
|
||||
/// To avoid a memory leak the pointer must be converted back to an `Rc` using
|
||||
/// [`Rc::from_raw_in`].
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// #![feature(allocator_api)]
|
||||
/// use std::rc::Rc;
|
||||
/// use std::alloc::System;
|
||||
///
|
||||
/// let x = Rc::new_in("hello".to_owned(), System);
|
||||
/// let (ptr, alloc) = Rc::into_raw_with_allocator(x);
|
||||
/// assert_eq!(unsafe { &*ptr }, "hello");
|
||||
/// let x = unsafe { Rc::from_raw_in(ptr, alloc) };
|
||||
/// assert_eq!(&*x, "hello");
|
||||
/// ```
|
||||
#[unstable(feature = "allocator_api", issue = "32838")]
|
||||
pub fn into_raw_with_allocator(this: Self) -> (*const T, A) {
|
||||
let this = mem::ManuallyDrop::new(this);
|
||||
let ptr = Self::as_ptr(&this);
|
||||
// Safety: `this` is ManuallyDrop so the allocator will not be double-dropped
|
||||
let alloc = unsafe { ptr::read(&this.alloc) };
|
||||
(ptr, alloc)
|
||||
}
|
||||
|
||||
/// Provides a raw pointer to the data.
|
||||
///
|
||||
/// The counts are not affected in any way and the `Rc` is not consumed. The pointer is valid
|
||||
@ -3024,11 +3051,11 @@ impl<T: ?Sized, A: Allocator> Weak<T, A> {
|
||||
result
|
||||
}
|
||||
|
||||
/// Consumes the `Weak<T>` and turns it into a raw pointer.
|
||||
/// Consumes the `Weak<T>`, returning the wrapped pointer and allocator.
|
||||
///
|
||||
/// This converts the weak pointer into a raw pointer, while still preserving the ownership of
|
||||
/// one weak reference (the weak count is not modified by this operation). It can be turned
|
||||
/// back into the `Weak<T>` with [`from_raw`].
|
||||
/// back into the `Weak<T>` with [`from_raw_in`].
|
||||
///
|
||||
/// The same restrictions of accessing the target of the pointer as with
|
||||
/// [`as_ptr`] apply.
|
||||
@ -3036,27 +3063,30 @@ impl<T: ?Sized, A: Allocator> Weak<T, A> {
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// #![feature(allocator_api)]
|
||||
/// use std::rc::{Rc, Weak};
|
||||
/// use std::alloc::System;
|
||||
///
|
||||
/// let strong = Rc::new("hello".to_owned());
|
||||
/// let strong = Rc::new_in("hello".to_owned(), System);
|
||||
/// let weak = Rc::downgrade(&strong);
|
||||
/// let raw = weak.into_raw();
|
||||
/// let (raw, alloc) = weak.into_raw_with_allocator();
|
||||
///
|
||||
/// assert_eq!(1, Rc::weak_count(&strong));
|
||||
/// assert_eq!("hello", unsafe { &*raw });
|
||||
///
|
||||
/// drop(unsafe { Weak::from_raw(raw) });
|
||||
/// drop(unsafe { Weak::from_raw_in(raw, alloc) });
|
||||
/// assert_eq!(0, Rc::weak_count(&strong));
|
||||
/// ```
|
||||
///
|
||||
/// [`from_raw`]: Weak::from_raw
|
||||
/// [`from_raw_in`]: Weak::from_raw_in
|
||||
/// [`as_ptr`]: Weak::as_ptr
|
||||
#[inline]
|
||||
#[unstable(feature = "allocator_api", issue = "32838")]
|
||||
pub fn into_raw_and_alloc(self) -> (*const T, A) {
|
||||
let rc = mem::ManuallyDrop::new(self);
|
||||
let result = rc.as_ptr();
|
||||
let alloc = unsafe { ptr::read(&rc.alloc) };
|
||||
pub fn into_raw_with_allocator(self) -> (*const T, A) {
|
||||
let this = mem::ManuallyDrop::new(self);
|
||||
let result = this.as_ptr();
|
||||
// Safety: `this` is ManuallyDrop so the allocator will not be double-dropped
|
||||
let alloc = unsafe { ptr::read(&this.alloc) };
|
||||
(result, alloc)
|
||||
}
|
||||
|
||||
|
||||
@ -1496,6 +1496,34 @@ impl<T: ?Sized, A: Allocator> Arc<T, A> {
|
||||
ptr
|
||||
}
|
||||
|
||||
/// Consumes the `Arc`, returning the wrapped pointer and allocator.
|
||||
///
|
||||
/// To avoid a memory leak the pointer must be converted back to an `Arc` using
|
||||
/// [`Arc::from_raw_in`].
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// #![feature(allocator_api)]
|
||||
/// use std::sync::Arc;
|
||||
/// use std::alloc::System;
|
||||
///
|
||||
/// let x = Arc::new_in("hello".to_owned(), System);
|
||||
/// let (ptr, alloc) = Arc::into_raw_with_allocator(x);
|
||||
/// assert_eq!(unsafe { &*ptr }, "hello");
|
||||
/// let x = unsafe { Arc::from_raw_in(ptr, alloc) };
|
||||
/// assert_eq!(&*x, "hello");
|
||||
/// ```
|
||||
#[must_use = "losing the pointer will leak memory"]
|
||||
#[unstable(feature = "allocator_api", issue = "32838")]
|
||||
pub fn into_raw_with_allocator(this: Self) -> (*const T, A) {
|
||||
let this = mem::ManuallyDrop::new(this);
|
||||
let ptr = Self::as_ptr(&this);
|
||||
// Safety: `this` is ManuallyDrop so the allocator will not be double-dropped
|
||||
let alloc = unsafe { ptr::read(&this.alloc) };
|
||||
(ptr, alloc)
|
||||
}
|
||||
|
||||
/// Provides a raw pointer to the data.
|
||||
///
|
||||
/// The counts are not affected in any way and the `Arc` is not consumed. The pointer is valid for
|
||||
@ -2740,6 +2768,45 @@ impl<T: ?Sized, A: Allocator> Weak<T, A> {
|
||||
result
|
||||
}
|
||||
|
||||
/// Consumes the `Weak<T>`, returning the wrapped pointer and allocator.
|
||||
///
|
||||
/// This converts the weak pointer into a raw pointer, while still preserving the ownership of
|
||||
/// one weak reference (the weak count is not modified by this operation). It can be turned
|
||||
/// back into the `Weak<T>` with [`from_raw_in`].
|
||||
///
|
||||
/// The same restrictions of accessing the target of the pointer as with
|
||||
/// [`as_ptr`] apply.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// #![feature(allocator_api)]
|
||||
/// use std::sync::{Arc, Weak};
|
||||
/// use std::alloc::System;
|
||||
///
|
||||
/// let strong = Arc::new_in("hello".to_owned(), System);
|
||||
/// let weak = Arc::downgrade(&strong);
|
||||
/// let (raw, alloc) = weak.into_raw_with_allocator();
|
||||
///
|
||||
/// assert_eq!(1, Arc::weak_count(&strong));
|
||||
/// assert_eq!("hello", unsafe { &*raw });
|
||||
///
|
||||
/// drop(unsafe { Weak::from_raw_in(raw, alloc) });
|
||||
/// assert_eq!(0, Arc::weak_count(&strong));
|
||||
/// ```
|
||||
///
|
||||
/// [`from_raw_in`]: Weak::from_raw_in
|
||||
/// [`as_ptr`]: Weak::as_ptr
|
||||
#[must_use = "losing the pointer will leak memory"]
|
||||
#[unstable(feature = "allocator_api", issue = "32838")]
|
||||
pub fn into_raw_with_allocator(self) -> (*const T, A) {
|
||||
let this = mem::ManuallyDrop::new(self);
|
||||
let result = this.as_ptr();
|
||||
// Safety: `this` is ManuallyDrop so the allocator will not be double-dropped
|
||||
let alloc = unsafe { ptr::read(&this.alloc) };
|
||||
(result, alloc)
|
||||
}
|
||||
|
||||
/// Converts a raw pointer previously created by [`into_raw`] back into `Weak<T>` in the provided
|
||||
/// allocator.
|
||||
///
|
||||
|
||||
19
tests/ui/coroutine/static-move-suggestion.fixed
Normal file
19
tests/ui/coroutine/static-move-suggestion.fixed
Normal file
@ -0,0 +1,19 @@
|
||||
//@ run-rustfix
|
||||
|
||||
// check to make sure that we suggest adding `move` after `static`
|
||||
|
||||
#![feature(coroutines)]
|
||||
|
||||
fn check() -> impl Sized {
|
||||
let x = 0;
|
||||
#[coroutine]
|
||||
static move || {
|
||||
//~^ ERROR E0373
|
||||
yield;
|
||||
x
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
check();
|
||||
}
|
||||
19
tests/ui/coroutine/static-move-suggestion.rs
Normal file
19
tests/ui/coroutine/static-move-suggestion.rs
Normal file
@ -0,0 +1,19 @@
|
||||
//@ run-rustfix
|
||||
|
||||
// check to make sure that we suggest adding `move` after `static`
|
||||
|
||||
#![feature(coroutines)]
|
||||
|
||||
fn check() -> impl Sized {
|
||||
let x = 0;
|
||||
#[coroutine]
|
||||
static || {
|
||||
//~^ ERROR E0373
|
||||
yield;
|
||||
x
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
check();
|
||||
}
|
||||
26
tests/ui/coroutine/static-move-suggestion.stderr
Normal file
26
tests/ui/coroutine/static-move-suggestion.stderr
Normal file
@ -0,0 +1,26 @@
|
||||
error[E0373]: coroutine may outlive the current function, but it borrows `x`, which is owned by the current function
|
||||
--> $DIR/static-move-suggestion.rs:10:5
|
||||
|
|
||||
LL | static || {
|
||||
| ^^^^^^^^^ may outlive borrowed value `x`
|
||||
...
|
||||
LL | x
|
||||
| - `x` is borrowed here
|
||||
|
|
||||
note: coroutine is returned here
|
||||
--> $DIR/static-move-suggestion.rs:10:5
|
||||
|
|
||||
LL | / static || {
|
||||
LL | |
|
||||
LL | | yield;
|
||||
LL | | x
|
||||
LL | | }
|
||||
| |_____^
|
||||
help: to force the coroutine to take ownership of `x` (and any other referenced variables), use the `move` keyword
|
||||
|
|
||||
LL | static move || {
|
||||
| ++++
|
||||
|
||||
error: aborting due to 1 previous error
|
||||
|
||||
For more information about this error, try `rustc --explain E0373`.
|
||||
@ -7,6 +7,7 @@ fn _zero() {
|
||||
if false {
|
||||
unsafe { mem::zeroed() }
|
||||
//~^ warn: never type fallback affects this call to an `unsafe` function
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
} else {
|
||||
return;
|
||||
};
|
||||
@ -21,6 +22,7 @@ fn _trans() {
|
||||
struct Zst;
|
||||
core::mem::transmute(Zst)
|
||||
//~^ warn: never type fallback affects this call to an `unsafe` function
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
}
|
||||
} else {
|
||||
return;
|
||||
@ -36,6 +38,7 @@ fn _union() {
|
||||
|
||||
unsafe { Union { a: () }.b }
|
||||
//~^ warn: never type fallback affects this union access
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
} else {
|
||||
return;
|
||||
};
|
||||
@ -45,6 +48,7 @@ fn _deref() {
|
||||
if false {
|
||||
unsafe { *ptr::from_ref(&()).cast() }
|
||||
//~^ warn: never type fallback affects this raw pointer dereference
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
} else {
|
||||
return;
|
||||
};
|
||||
@ -62,6 +66,7 @@ fn _only_generics() {
|
||||
|
||||
unsafe { internally_create(x) }
|
||||
//~^ warn: never type fallback affects this call to an `unsafe` function
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
|
||||
x.unwrap()
|
||||
} else {
|
||||
@ -73,9 +78,11 @@ fn _stored_function() {
|
||||
if false {
|
||||
let zeroed = mem::zeroed;
|
||||
//~^ warn: never type fallback affects this `unsafe` function
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
|
||||
unsafe { zeroed() }
|
||||
//~^ warn: never type fallback affects this call to an `unsafe` function
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
} else {
|
||||
return;
|
||||
};
|
||||
@ -90,6 +97,7 @@ fn _only_generics_stored_function() {
|
||||
let x = None;
|
||||
let f = internally_create;
|
||||
//~^ warn: never type fallback affects this `unsafe` function
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
|
||||
unsafe { f(x) }
|
||||
|
||||
@ -113,6 +121,7 @@ fn _method() {
|
||||
unsafe {
|
||||
S(marker::PhantomData).create_out_of_thin_air()
|
||||
//~^ warn: never type fallback affects this call to an `unsafe` method
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
}
|
||||
} else {
|
||||
return;
|
||||
@ -129,6 +138,7 @@ fn _objc() {
|
||||
() => {
|
||||
match send_message::<_ /* ?0 */>() {
|
||||
//~^ warn: never type fallback affects this call to an `unsafe` function
|
||||
//~| warn: this will change its meaning in a future release!
|
||||
Ok(x) => x,
|
||||
Err(_) => loop {},
|
||||
}
|
||||
|
||||
@ -4,75 +4,93 @@ warning: never type fallback affects this call to an `unsafe` function
|
||||
LL | unsafe { mem::zeroed() }
|
||||
| ^^^^^^^^^^^^^
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
= note: `#[warn(never_type_fallback_flowing_into_unsafe)]` on by default
|
||||
|
||||
warning: never type fallback affects this call to an `unsafe` function
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:22:13
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:23:13
|
||||
|
|
||||
LL | core::mem::transmute(Zst)
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
|
||||
warning: never type fallback affects this union access
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:37:18
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:39:18
|
||||
|
|
||||
LL | unsafe { Union { a: () }.b }
|
||||
| ^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
|
||||
warning: never type fallback affects this raw pointer dereference
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:46:18
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:49:18
|
||||
|
|
||||
LL | unsafe { *ptr::from_ref(&()).cast() }
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
|
||||
warning: never type fallback affects this call to an `unsafe` function
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:63:18
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:67:18
|
||||
|
|
||||
LL | unsafe { internally_create(x) }
|
||||
| ^^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
|
||||
warning: never type fallback affects this call to an `unsafe` function
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:77:18
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:83:18
|
||||
|
|
||||
LL | unsafe { zeroed() }
|
||||
| ^^^^^^^^
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
|
||||
warning: never type fallback affects this `unsafe` function
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:74:22
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:79:22
|
||||
|
|
||||
LL | let zeroed = mem::zeroed;
|
||||
| ^^^^^^^^^^^
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
|
||||
warning: never type fallback affects this `unsafe` function
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:91:17
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:98:17
|
||||
|
|
||||
LL | let f = internally_create;
|
||||
| ^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
|
||||
warning: never type fallback affects this call to an `unsafe` method
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:114:13
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:122:13
|
||||
|
|
||||
LL | S(marker::PhantomData).create_out_of_thin_air()
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
|
||||
warning: never type fallback affects this call to an `unsafe` function
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:130:19
|
||||
--> $DIR/lint-never-type-fallback-flowing-into-unsafe.rs:139:19
|
||||
|
|
||||
LL | match send_message::<_ /* ?0 */>() {
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
@ -80,6 +98,8 @@ LL | match send_message::<_ /* ?0 */>() {
|
||||
LL | msg_send!();
|
||||
| ----------- in this macro invocation
|
||||
|
|
||||
= warning: this will change its meaning in a future release!
|
||||
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
|
||||
= help: specify the type explicitly
|
||||
= note: this warning originates in the macro `msg_send` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
|
||||
|
||||
6
tests/ui/rustc-env/README.md
Normal file
6
tests/ui/rustc-env/README.md
Normal file
@ -0,0 +1,6 @@
|
||||
Some environment variables affect rustc's behavior not because they are major compiler interfaces
|
||||
but rather because rustc is, ultimately, a Rust program, with debug logging, stack control, etc.
|
||||
|
||||
Prefer to group tests that use environment variables to control something about rustc's core UX,
|
||||
like "can we parse this number of parens if we raise RUST_MIN_STACK?" with related code for that
|
||||
compiler feature.
|
||||
2
tests/ui/rustc-env/min-stack-banana.rs
Normal file
2
tests/ui/rustc-env/min-stack-banana.rs
Normal file
@ -0,0 +1,2 @@
|
||||
//@ rustc-env:RUST_MIN_STACK=banana
|
||||
fn main() {}
|
||||
4
tests/ui/rustc-env/min-stack-banana.stderr
Normal file
4
tests/ui/rustc-env/min-stack-banana.stderr
Normal file
@ -0,0 +1,4 @@
|
||||
error: `RUST_MIN_STACK` should be a number of bytes, but was "banana"
|
||||
|
|
||||
= note: you can also unset `RUST_MIN_STACK` to use the default stack size
|
||||
|
||||
@ -5,7 +5,7 @@
|
||||
//@ dont-check-compiler-stdout
|
||||
//@ dont-check-compiler-stderr
|
||||
//@ compile-flags: --error-format human
|
||||
//@ aux-build: rustc-rust-log-aux.rs
|
||||
//@ aux-build: rust-log-aux.rs
|
||||
//@ rustc-env:RUSTC_LOG=debug
|
||||
|
||||
fn main() {}
|
||||
Loading…
Reference in New Issue
Block a user