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Auto merge of #78350 - JohnTitor:rollup-vbbm5wf, r=JohnTitor 

Rollup of 8 pull requests

Successful merges:

 - #77984 (Compute proper module parent during resolution)
 - #78085 (MIR validation should check `SwitchInt` values are valid for the type)
 - #78208 (replace `#[allow_internal_unstable]` with `#[rustc_allow_const_fn_unstable]` for `const fn`s)
 - #78209 (Update `compiler_builtins` to 0.1.36)
 - #78276 (Bump backtrace-rs to enable Mach-O support on iOS.)
 - #78320 (Link to cargo's `build-std` feature instead of `xargo` in custom target docs)
 - #78322 (BTreeMap: stop mistaking node::MIN_LEN for a node level constraint)
 - #78326 (Split out statement attributes changes from #78306)

Failed merges:

r? `@ghost`
This commit is contained in:
bors 2020-10-25 11:35:26 +00:00
parent 5171cc76c2 0a26e4ba7e
commit f392479de6
58 changed files with 427 additions and 131 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Cargo.lock
View File

@ -636,9 +636,9 @@ dependencies = [
[[package]]
name = "compiler_builtins"
version = "0.1.35"
version = "0.1.36"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e3fcd8aba10d17504c87ef12d4f62ef404c6a4703d16682a9eb5543e6cf24455"
checksum = "7cd0782e0a7da7598164153173e5a5d4d9b1da094473c98dce0ff91406112369"
dependencies = [
"cc",
"rustc-std-workspace-core",

6
compiler/rustc_ast/src/attr/mod.rs
View File

@ -629,7 +629,8 @@ impl HasAttrs for StmtKind {
match *self {
StmtKind::Local(ref local) => local.attrs(),
StmtKind::Expr(ref expr) | StmtKind::Semi(ref expr) => expr.attrs(),
StmtKind::Empty | StmtKind::Item(..) => &[],
StmtKind::Item(ref item) => item.attrs(),
StmtKind::Empty => &[],
StmtKind::MacCall(ref mac) => mac.attrs.attrs(),
}
}
@ -638,7 +639,8 @@ impl HasAttrs for StmtKind {
match self {
StmtKind::Local(local) => local.visit_attrs(f),
StmtKind::Expr(expr) | StmtKind::Semi(expr) => expr.visit_attrs(f),
StmtKind::Empty | StmtKind::Item(..) => {}
StmtKind::Item(item) => item.visit_attrs(f),
StmtKind::Empty => {}
StmtKind::MacCall(mac) => {
mac.attrs.visit_attrs(f);
}

25
compiler/rustc_attr/src/builtin.rs
View File

@ -1013,13 +1013,28 @@ pub fn allow_internal_unstable<'a>(
sess: &'a Session,
attrs: &'a [Attribute],
) -> Option<impl Iterator<Item = Symbol> + 'a> {
let attrs = sess.filter_by_name(attrs, sym::allow_internal_unstable);
allow_unstable(sess, attrs, sym::allow_internal_unstable)
}
pub fn rustc_allow_const_fn_unstable<'a>(
sess: &'a Session,
attrs: &'a [Attribute],
) -> Option<impl Iterator<Item = Symbol> + 'a> {
allow_unstable(sess, attrs, sym::rustc_allow_const_fn_unstable)
}
fn allow_unstable<'a>(
sess: &'a Session,
attrs: &'a [Attribute],
symbol: Symbol,
) -> Option<impl Iterator<Item = Symbol> + 'a> {
let attrs = sess.filter_by_name(attrs, symbol);
let list = attrs
.filter_map(move |attr| {
attr.meta_item_list().or_else(|| {
sess.diagnostic().span_err(
attr.span,
"`allow_internal_unstable` expects a list of feature names",
&format!("`{}` expects a list of feature names", symbol.to_ident_string()),
);
None
})
@ -1029,8 +1044,10 @@ pub fn allow_internal_unstable<'a>(
Some(list.into_iter().filter_map(move |it| {
let name = it.ident().map(|ident| ident.name);
if name.is_none() {
sess.diagnostic()
.span_err(it.span(), "`allow_internal_unstable` expects feature names");
sess.diagnostic().span_err(
it.span(),
&format!("`{}` expects feature names", symbol.to_ident_string()),
);
}
name
}))

3
compiler/rustc_expand/src/expand.rs
View File

@ -1357,7 +1357,8 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
// we'll expand attributes on expressions separately
if !stmt.is_expr() {
let (attr, derives, after_derive) = if stmt.is_item() {
self.classify_item(&mut stmt)
// FIXME: Handle custom attributes on statements (#15701)
(None, vec![], false)
} else {
// ignore derives on non-item statements so it falls through
// to the unused-attributes lint

5
compiler/rustc_feature/src/active.rs
View File

@ -210,6 +210,11 @@ declare_features! (
/// it is not on path for eventual stabilization).
(active, no_niche, "1.42.0", None, None),
/// Allows using `#[rustc_allow_const_fn_unstable]`.
/// This is an attribute on `const fn` for the same
/// purpose as `#[allow_internal_unstable]`.
(active, rustc_allow_const_fn_unstable, "1.49.0", Some(69399), None),
// no-tracking-issue-end
// -------------------------------------------------------------------------

4
compiler/rustc_feature/src/builtin_attrs.rs
View File

@ -379,6 +379,10 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
allow_internal_unstable, AssumedUsed, template!(Word, List: "feat1, feat2, ..."),
"allow_internal_unstable side-steps feature gating and stability checks",
),
gated!(
rustc_allow_const_fn_unstable, AssumedUsed, template!(Word, List: "feat1, feat2, ..."),
"rustc_allow_const_fn_unstable side-steps feature gating and stability checks"
),
gated!(
allow_internal_unsafe, Normal, template!(Word),
"allow_internal_unsafe side-steps the unsafe_code lint",

6
compiler/rustc_hir/src/hir.rs
View File

@ -1101,11 +1101,11 @@ pub enum StmtKind<'hir> {
Semi(&'hir Expr<'hir>),
}
impl StmtKind<'hir> {
pub fn attrs(&self) -> &'hir [Attribute] {
impl<'hir> StmtKind<'hir> {
pub fn attrs(&self, get_item: impl FnOnce(ItemId) -> &'hir Item<'hir>) -> &'hir [Attribute] {
match *self {
StmtKind::Local(ref l) => &l.attrs,
StmtKind::Item(_) => &[],
StmtKind::Item(ref item_id) => &get_item(*item_id).attrs,
StmtKind::Expr(ref e) | StmtKind::Semi(ref e) => &e.attrs,
}
}

3
compiler/rustc_lint/src/builtin.rs
View File

@ -994,7 +994,8 @@ impl EarlyLintPass for UnusedDocComment {
fn check_stmt(&mut self, cx: &EarlyContext<'_>, stmt: &ast::Stmt) {
let kind = match stmt.kind {
ast::StmtKind::Local(..) => "statements",
ast::StmtKind::Item(..) => "inner items",
// Disabled pending discussion in #78306
ast::StmtKind::Item(..) => return,
// expressions will be reported by `check_expr`.
ast::StmtKind::Empty
| ast::StmtKind::Semi(_)

19
compiler/rustc_lint/src/early.rs
View File

@ -18,6 +18,7 @@ use crate::context::{EarlyContext, LintContext, LintStore};
use crate::passes::{EarlyLintPass, EarlyLintPassObject};
use rustc_ast as ast;
use rustc_ast::visit as ast_visit;
use rustc_attr::HasAttrs;
use rustc_session::lint::{BufferedEarlyLint, LintBuffer, LintPass};
use rustc_session::Session;
use rustc_span::symbol::Ident;
@ -119,8 +120,22 @@ impl<'a, T: EarlyLintPass> ast_visit::Visitor<'a> for EarlyContextAndPass<'a, T>
}
fn visit_stmt(&mut self, s: &'a ast::Stmt) {
run_early_pass!(self, check_stmt, s);
self.check_id(s.id);
// Add the statement's lint attributes to our
// current state when checking the statement itself.
// This allows us to handle attributes like
// `#[allow(unused_doc_comments)]`, which apply to
// sibling attributes on the same target
//
// Note that statements get their attributes from
// the AST struct that they wrap (e.g. an item)
self.with_lint_attrs(s.id, s.attrs(), |cx| {
run_early_pass!(cx, check_stmt, s);
cx.check_id(s.id);
});
// The visitor for the AST struct wrapped
// by the statement (e.g. `Item`) will call
// `with_lint_attrs`, so do this walk
// outside of the above `with_lint_attrs` call
ast_visit::walk_stmt(self, s);
}

13
compiler/rustc_lint/src/late.rs
View File

@ -174,12 +174,13 @@ impl<'tcx, T: LateLintPass<'tcx>> hir_visit::Visitor<'tcx> for LateContextAndPas
}
fn visit_stmt(&mut self, s: &'tcx hir::Stmt<'tcx>) {
// statement attributes are actually just attributes on one of
// - item
// - local
// - expression
// so we keep track of lint levels there
lint_callback!(self, check_stmt, s);
let get_item = |id: hir::ItemId| self.context.tcx.hir().item(id.id);
let attrs = &s.kind.attrs(get_item);
// See `EarlyContextAndPass::visit_stmt` for an explanation
// of why we call `walk_stmt` outside of `with_lint_attrs`
self.with_lint_attrs(s.hir_id, attrs, |cx| {
lint_callback!(cx, check_stmt, s);
});
hir_visit::walk_stmt(self, s);
}

7
compiler/rustc_lint/src/levels.rs
View File

@ -562,6 +562,13 @@ impl<'tcx> intravisit::Visitor<'tcx> for LintLevelMapBuilder<'_, 'tcx> {
})
}
fn visit_stmt(&mut self, e: &'tcx hir::Stmt<'tcx>) {
// We will call `with_lint_attrs` when we walk
// the `StmtKind`. The outer statement itself doesn't
// define the lint levels.
intravisit::walk_stmt(self, e);
}
fn visit_expr(&mut self, e: &'tcx hir::Expr<'tcx>) {
self.with_lint_attrs(e.hir_id, &e.attrs, |builder| {
intravisit::walk_expr(builder, e);

5
compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs
View File

@ -8,6 +8,7 @@ use rustc_ast as ast;
use rustc_ast::expand::allocator::AllocatorKind;
use rustc_data_structures::svh::Svh;
use rustc_hir as hir;
use rustc_hir::def::DefKind;
use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, CRATE_DEF_INDEX, LOCAL_CRATE};
use rustc_hir::definitions::{DefKey, DefPath, DefPathHash};
use rustc_middle::hir::exports::Export;
@ -487,6 +488,10 @@ impl CrateStore for CStore {
self.get_crate_data(def.krate).def_key(def.index)
}
fn def_kind(&self, def: DefId) -> DefKind {
self.get_crate_data(def.krate).def_kind(def.index)
}
fn def_path(&self, def: DefId) -> DefPath {
self.get_crate_data(def.krate).def_path(def.index)
}

2
compiler/rustc_middle/src/hir/map/mod.rs
View File

@ -816,7 +816,7 @@ impl<'hir> Map<'hir> {
Some(Node::Variant(ref v)) => Some(&v.attrs[..]),
Some(Node::Field(ref f)) => Some(&f.attrs[..]),
Some(Node::Expr(ref e)) => Some(&*e.attrs),
Some(Node::Stmt(ref s)) => Some(s.kind.attrs()),
Some(Node::Stmt(ref s)) => Some(s.kind.attrs(|id| self.item(id.id))),
Some(Node::Arm(ref a)) => Some(&*a.attrs),
Some(Node::GenericParam(param)) => Some(&param.attrs[..]),
// Unit/tuple structs/variants take the attributes straight from

2
compiler/rustc_middle/src/middle/cstore.rs
View File

@ -8,6 +8,7 @@ use rustc_ast as ast;
use rustc_ast::expand::allocator::AllocatorKind;
use rustc_data_structures::svh::Svh;
use rustc_data_structures::sync::{self, MetadataRef};
use rustc_hir::def::DefKind;
use rustc_hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
use rustc_hir::definitions::{DefKey, DefPath, DefPathHash};
use rustc_macros::HashStable;
@ -185,6 +186,7 @@ pub trait CrateStore {
// resolve
fn def_key(&self, def: DefId) -> DefKey;
fn def_kind(&self, def: DefId) -> DefKind;
fn def_path(&self, def: DefId) -> DefPath;
fn def_path_hash(&self, def: DefId) -> DefPathHash;
fn all_def_path_hashes_and_def_ids(&self, cnum: CrateNum) -> Vec<(DefPathHash, DefId)>;

8
compiler/rustc_mir/src/transform/check_consts/mod.rs
View File

@ -79,9 +79,13 @@ pub fn is_lang_panic_fn(tcx: TyCtxt<'tcx>, def_id: DefId) -> bool {
|| Some(def_id) == tcx.lang_items().begin_panic_fn()
}
pub fn allow_internal_unstable(tcx: TyCtxt<'tcx>, def_id: DefId, feature_gate: Symbol) -> bool {
pub fn rustc_allow_const_fn_unstable(
tcx: TyCtxt<'tcx>,
def_id: DefId,
feature_gate: Symbol,
) -> bool {
let attrs = tcx.get_attrs(def_id);
attr::allow_internal_unstable(&tcx.sess, attrs)
attr::rustc_allow_const_fn_unstable(&tcx.sess, attrs)
.map_or(false, |mut features| features.any(|name| name == feature_gate))
}

14
compiler/rustc_mir/src/transform/check_consts/validation.rs
View File

@ -292,7 +292,11 @@ impl Validator<'mir, 'tcx> {
Status::Unstable(gate) if self.tcx.features().enabled(gate) => {
let unstable_in_stable = self.ccx.is_const_stable_const_fn()
&& !super::allow_internal_unstable(self.tcx, self.def_id().to_def_id(), gate);
&& !super::rustc_allow_const_fn_unstable(
self.tcx,
self.def_id().to_def_id(),
gate,
);
if unstable_in_stable {
emit_unstable_in_stable_error(self.ccx, span, gate);
}
@ -807,7 +811,7 @@ impl Visitor<'tcx> for Validator<'mir, 'tcx> {
}
// Calling an unstable function *always* requires that the corresponding gate
// be enabled, even if the function has `#[allow_internal_unstable(the_gate)]`.
// be enabled, even if the function has `#[rustc_allow_const_fn_unstable(the_gate)]`.
if !tcx.features().declared_lib_features.iter().any(|&(sym, _)| sym == gate) {
self.check_op(ops::FnCallUnstable(callee, Some(gate)));
return;
@ -821,7 +825,7 @@ impl Visitor<'tcx> for Validator<'mir, 'tcx> {
// Otherwise, we are something const-stable calling a const-unstable fn.
if super::allow_internal_unstable(tcx, caller, gate) {
if super::rustc_allow_const_fn_unstable(tcx, caller, gate) {
return;
}
@ -967,8 +971,8 @@ fn emit_unstable_in_stable_error(ccx: &ConstCx<'_, '_>, span: Span, gate: Symbol
)
.span_suggestion(
attr_span,
"otherwise `#[allow_internal_unstable]` can be used to bypass stability checks",
format!("#[allow_internal_unstable({})]\n", gate),
"otherwise `#[rustc_allow_const_fn_unstable]` can be used to bypass stability checks",
format!("#[rustc_allow_const_fn_unstable({})]\n", gate),
Applicability::MaybeIncorrect,
)
.emit();

26
compiler/rustc_mir/src/transform/validate.rs
View File

@ -5,13 +5,17 @@ use crate::dataflow::{Analysis, ResultsCursor};
use crate::util::storage::AlwaysLiveLocals;
use super::MirPass;
use rustc_middle::mir::visit::{PlaceContext, Visitor};
use rustc_middle::mir::{
interpret::Scalar,
visit::{PlaceContext, Visitor},
};
use rustc_middle::mir::{
AggregateKind, BasicBlock, Body, BorrowKind, Local, Location, MirPhase, Operand, Rvalue,
SourceScope, Statement, StatementKind, Terminator, TerminatorKind, VarDebugInfo,
};
use rustc_middle::ty::relate::{Relate, RelateResult, TypeRelation};
use rustc_middle::ty::{self, ParamEnv, Ty, TyCtxt};
use rustc_target::abi::Size;
#[derive(Copy, Clone, Debug)]
enum EdgeKind {
@ -346,7 +350,25 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
),
);
}
for (_, target) in targets.iter() {
let target_width = self.tcx.sess.target.pointer_width;
let size = Size::from_bits(match switch_ty.kind() {
ty::Uint(uint) => uint.normalize(target_width).bit_width().unwrap(),
ty::Int(int) => int.normalize(target_width).bit_width().unwrap(),
ty::Char => 32,
ty::Bool => 1,
other => bug!("unhandled type: {:?}", other),
});
for (value, target) in targets.iter() {
if Scalar::<()>::try_from_uint(value, size).is_none() {
self.fail(
location,
format!("the value {:#x} is not a proper {:?}", value, switch_ty),
)
}
self.check_edge(location, target, EdgeKind::Normal);
}
self.check_edge(location, targets.otherwise(), EdgeKind::Normal);

53
compiler/rustc_passes/src/check_attr.rs
View File

@ -85,6 +85,10 @@ impl CheckAttrVisitor<'tcx> {
self.check_export_name(&attr, span, target)
} else if self.tcx.sess.check_name(attr, sym::rustc_args_required_const) {
self.check_rustc_args_required_const(&attr, span, target, item)
} else if self.tcx.sess.check_name(attr, sym::allow_internal_unstable) {
self.check_allow_internal_unstable(&attr, span, target, &attrs)
} else if self.tcx.sess.check_name(attr, sym::rustc_allow_const_fn_unstable) {
self.check_rustc_allow_const_fn_unstable(hir_id, &attr, span, target)
} else {
// lint-only checks
if self.tcx.sess.check_name(attr, sym::cold) {
@ -719,6 +723,55 @@ impl CheckAttrVisitor<'tcx> {
}
}
}
/// Outputs an error for `#[allow_internal_unstable]` which can only be applied to macros.
/// (Allows proc_macro functions)
fn check_allow_internal_unstable(
&self,
attr: &Attribute,
span: &Span,
target: Target,
attrs: &[Attribute],
) -> bool {
debug!("Checking target: {:?}", target);
if target == Target::Fn {
for attr in attrs {
if self.tcx.sess.is_proc_macro_attr(attr) {
debug!("Is proc macro attr");
return true;
}
}
debug!("Is not proc macro attr");
}
self.tcx
.sess
.struct_span_err(attr.span, "attribute should be applied to a macro")
.span_label(*span, "not a macro")
.emit();
false
}
/// Outputs an error for `#[allow_internal_unstable]` which can only be applied to macros.
/// (Allows proc_macro functions)
fn check_rustc_allow_const_fn_unstable(
&self,
hir_id: HirId,
attr: &Attribute,
span: &Span,
target: Target,
) -> bool {
if let Target::Fn | Target::Method(_) = target {
if self.tcx.is_const_fn_raw(self.tcx.hir().local_def_id(hir_id)) {
return true;
}
}
self.tcx
.sess
.struct_span_err(attr.span, "attribute should be applied to `const fn`")
.span_label(*span, "not a `const fn`")
.emit();
false
}
}
impl Visitor<'tcx> for CheckAttrVisitor<'tcx> {

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

@ -87,7 +87,7 @@ impl<'tcx> CheckConstVisitor<'tcx> {
let is_feature_allowed = |feature_gate| {
// All features require that the corresponding gate be enabled,
// even if the function has `#[allow_internal_unstable(the_gate)]`.
// even if the function has `#[rustc_allow_const_fn_unstable(the_gate)]`.
if !tcx.features().enabled(feature_gate) {
return false;
}
@ -105,8 +105,8 @@ impl<'tcx> CheckConstVisitor<'tcx> {
}
// However, we cannot allow stable `const fn`s to use unstable features without an explicit
// opt-in via `allow_internal_unstable`.
attr::allow_internal_unstable(&tcx.sess, &tcx.get_attrs(def_id))
// opt-in via `rustc_allow_const_fn_unstable`.
attr::rustc_allow_const_fn_unstable(&tcx.sess, &tcx.get_attrs(def_id))
.map_or(false, |mut features| features.any(|name| name == feature_gate))
};

48
compiler/rustc_resolve/src/build_reduced_graph.rs
View File

@ -95,6 +95,27 @@ impl<'a> Resolver<'a> {
}
}
/// Walks up the tree of definitions starting at `def_id`,
/// stopping at the first `DefKind::Mod` encountered
fn nearest_mod_parent(&mut self, def_id: DefId) -> Module<'a> {
let def_key = self.cstore().def_key(def_id);
let mut parent_id = DefId {
krate: def_id.krate,
index: def_key.parent.expect("failed to get parent for module"),
};
// The immediate parent may not be a module
// (e.g. `const _: () = { #[path = "foo.rs"] mod foo; };`)
// Walk up the tree until we hit a module or the crate root.
while parent_id.index != CRATE_DEF_INDEX
&& self.cstore().def_kind(parent_id) != DefKind::Mod
{
let parent_def_key = self.cstore().def_key(parent_id);
parent_id.index = parent_def_key.parent.expect("failed to get parent for module");
}
self.get_module(parent_id)
}
crate fn get_module(&mut self, def_id: DefId) -> Module<'a> {
// If this is a local module, it will be in `module_map`, no need to recalculate it.
if let Some(def_id) = def_id.as_local() {
@ -116,11 +137,8 @@ impl<'a> Resolver<'a> {
.data
.get_opt_name()
.expect("given a DefId that wasn't a module");
// This unwrap is safe since we know this isn't the root
let parent = Some(self.get_module(DefId {
index: def_key.parent.expect("failed to get parent for module"),
..def_id
}));
let parent = Some(self.nearest_mod_parent(def_id));
(name, parent)
};
@ -145,8 +163,24 @@ impl<'a> Resolver<'a> {
if let Some(id) = def_id.as_local() {
self.local_macro_def_scopes[&id]
} else {
let module_def_id = ty::DefIdTree::parent(&*self, def_id).unwrap();
self.get_module(module_def_id)
// This is not entirely correct - a `macro_rules!` macro may occur
// inside a 'block' module:
//
// ```rust
// const _: () = {
// #[macro_export]
// macro_rules! my_macro {
// () => {};
// }
// `
// We don't record this information for external crates, so
// the module we compute here will be the closest 'mod' item
// (not necesssarily the actual parent of the `macro_rules!`
// macro). `macro_rules!` macros can't use def-site hygiene,
// so this hopefully won't be a problem.
//
// See https://github.com/rust-lang/rust/pull/77984#issuecomment-712445508
self.nearest_mod_parent(def_id)
}
}

1
compiler/rustc_span/src/symbol.rs
View File

@ -894,6 +894,7 @@ symbols! {
rustc,
rustc_allocator,
rustc_allocator_nounwind,
rustc_allow_const_fn_unstable,
rustc_args_required_const,
rustc_attrs,
rustc_builtin_macro,

8
library/alloc/src/collections/btree/map.rs
View File

@ -17,6 +17,10 @@ mod entry;
pub use entry::{Entry, OccupiedEntry, VacantEntry};
use Entry::*;
/// Minimum number of elements in nodes that are not a root.
/// We might temporarily have fewer elements during methods.
pub(super) const MIN_LEN: usize = node::MIN_LEN_AFTER_SPLIT;
/// A map based on a B-Tree.
///
/// B-Trees represent a fundamental compromise between cache-efficiency and actually minimizing
@ -1094,13 +1098,13 @@ impl<K: Ord, V> BTreeMap<K, V> {
// Check if right-most child is underfull.
let mut last_edge = internal.last_edge();
let right_child_len = last_edge.reborrow().descend().len();
if right_child_len < node::MIN_LEN {
if right_child_len < MIN_LEN {
// We need to steal.
let mut last_kv = match last_edge.left_kv() {
Ok(left) => left,
Err(_) => unreachable!(),
};
last_kv.bulk_steal_left(node::MIN_LEN - right_child_len);
last_kv.bulk_steal_left(MIN_LEN - right_child_len);
last_edge = last_kv.right_edge();
}

21
library/alloc/src/collections/btree/map/tests.rs
View File

@ -50,10 +50,15 @@ impl<'a, K: 'a, V: 'a> BTreeMap<K, V> {
{
if let Some(root) = &self.root {
let root_node = root.node_as_ref();
assert!(root_node.ascend().is_err());
root_node.assert_back_pointers();
root_node.assert_ascending();
assert_eq!(self.length, root_node.assert_and_add_lengths());
let counted = root_node.assert_ascending();
assert_eq!(self.length, counted);
assert_eq!(self.length, root_node.calc_length());
root_node.assert_min_len(if root_node.height() > 0 { 1 } else { 0 });
} else {
assert_eq!(self.length, 0);
}
@ -76,6 +81,18 @@ impl<'a, K: 'a, V: 'a> BTreeMap<K, V> {
}
}
impl<'a, K: 'a, V: 'a> NodeRef<marker::Immut<'a>, K, V, marker::LeafOrInternal> {
pub fn assert_min_len(self, min_len: usize) {
assert!(self.len() >= min_len, "{} < {}", self.len(), min_len);
if let node::ForceResult::Internal(node) = self.force() {
for idx in 0..=node.len() {
let edge = unsafe { Handle::new_edge(node, idx) };
edge.descend().assert_min_len(MIN_LEN);
}
}
}
}
// Test our value of MIN_INSERTS_HEIGHT_2. It may change according to the
// implementation of insertion, but it's best to be aware of when it does.
#[test]

2
library/alloc/src/collections/btree/node.rs
View File

@ -38,8 +38,8 @@ use crate::alloc::{AllocRef, Global, Layout};
use crate::boxed::Box;
const B: usize = 6;
pub const MIN_LEN: usize = B - 1;
pub const CAPACITY: usize = 2 * B - 1;
pub const MIN_LEN_AFTER_SPLIT: usize = B - 1;
const KV_IDX_CENTER: usize = B - 1;
const EDGE_IDX_LEFT_OF_CENTER: usize = B - 1;
const EDGE_IDX_RIGHT_OF_CENTER: usize = B;

56
library/alloc/src/collections/btree/node/tests.rs
View File

@ -5,25 +5,26 @@ use crate::string::String;
use core::cmp::Ordering::*;
impl<'a, K: 'a, V: 'a> NodeRef<marker::Immut<'a>, K, V, marker::LeafOrInternal> {
/// Asserts that the back pointer in each reachable node points to its parent.
pub fn assert_back_pointers(self) {
match self.force() {
ForceResult::Leaf(_) => {}
ForceResult::Internal(node) => {
for idx in 0..=node.len() {
let edge = unsafe { Handle::new_edge(node, idx) };
let child = edge.descend();
assert!(child.ascend().ok() == Some(edge));
child.assert_back_pointers();
}
if let ForceResult::Internal(node) = self.force() {
for idx in 0..=node.len() {
let edge = unsafe { Handle::new_edge(node, idx) };
let child = edge.descend();
assert!(child.ascend().ok() == Some(edge));
child.assert_back_pointers();
}
}
}
pub fn assert_ascending(self)
/// Asserts that the keys are in strictly ascending order.
/// Returns how many keys it encountered.
pub fn assert_ascending(self) -> usize
where
K: Copy + Debug + Ord,
{
struct SeriesChecker<T> {
num_seen: usize,
previous: Option<T>,
}
impl<T: Copy + Debug + Ord> SeriesChecker<T> {
@ -32,10 +33,11 @@ impl<'a, K: 'a, V: 'a> NodeRef<marker::Immut<'a>, K, V, marker::LeafOrInternal>
assert!(previous < next, "{:?} >= {:?}", previous, next);
}
self.previous = Some(next);
self.num_seen += 1;
}
}
let mut checker = SeriesChecker { previous: None };
let mut checker = SeriesChecker { num_seen: 0, previous: None };
self.visit_nodes_in_order(|pos| match pos {
navigate::Position::Leaf(node) => {
for idx in 0..node.len() {
@ -49,33 +51,7 @@ impl<'a, K: 'a, V: 'a> NodeRef<marker::Immut<'a>, K, V, marker::LeafOrInternal>
}
navigate::Position::Internal(_) => {}
});
}
pub fn assert_and_add_lengths(self) -> usize {
let mut internal_length = 0;
let mut internal_kv_count = 0;
let mut leaf_length = 0;
self.visit_nodes_in_order(|pos| match pos {
navigate::Position::Leaf(node) => {
let is_root = self.height() == 0;
let min_len = if is_root { 0 } else { MIN_LEN };
assert!(node.len() >= min_len, "{} < {}", node.len(), min_len);
leaf_length += node.len();
}
navigate::Position::Internal(node) => {
let is_root = self.height() == node.height();
let min_len = if is_root { 1 } else { MIN_LEN };
assert!(node.len() >= min_len, "{} < {}", node.len(), min_len);
internal_length += node.len();
}
navigate::Position::InternalKV(_) => {
internal_kv_count += 1;
}
});
assert_eq!(internal_length, internal_kv_count);
let total = internal_length + leaf_length;
assert_eq!(self.calc_length(), total);
total
checker.num_seen
}
pub fn dump_keys(self) -> String
@ -124,8 +100,8 @@ fn test_splitpoint() {
right_len += 1;
}
}
assert!(left_len >= MIN_LEN);
assert!(right_len >= MIN_LEN);
assert!(left_len >= MIN_LEN_AFTER_SPLIT);
assert!(right_len >= MIN_LEN_AFTER_SPLIT);
assert!(left_len + right_len == CAPACITY);
}
}

5
library/alloc/src/collections/btree/remove.rs
View File

@ -1,4 +1,5 @@
use super::node::{self, marker, ForceResult, Handle, NodeRef};
use super::map::MIN_LEN;
use super::node::{marker, ForceResult, Handle, NodeRef};
use super::unwrap_unchecked;
use core::mem;
use core::ptr;
@ -40,7 +41,7 @@ impl<'a, K: 'a, V: 'a> Handle<NodeRef<marker::Mut<'a>, K, V, marker::LeafOrInter
// Handle underflow
let mut cur_node = unsafe { ptr::read(&pos).into_node().forget_type() };
let mut at_leaf = true;
while cur_node.len() < node::MIN_LEN {
while cur_node.len() < MIN_LEN {
match handle_underfull_node(cur_node) {
UnderflowResult::AtRoot => break,
UnderflowResult::Merged(edge, merged_with_left, offset) => {

18
library/alloc/src/collections/btree/split.rs
View File

@ -1,5 +1,6 @@
use super::node::{self, ForceResult::*, Root};
use super::search::{self, SearchResult::*};
use super::map::MIN_LEN;
use super::node::{ForceResult::*, Root};
use super::search::{search_node, SearchResult::*};
use core::borrow::Borrow;
impl<K, V> Root<K, V> {
@ -20,7 +21,7 @@ impl<K, V> Root<K, V> {
let mut right_node = right_root.node_as_mut();
loop {
let mut split_edge = match search::search_node(left_node, key) {
let mut split_edge = match search_node(left_node, key) {
// key is going to the right tree
Found(handle) => handle.left_edge(),
GoDown(handle) => handle,
@ -65,9 +66,9 @@ impl<K, V> Root<K, V> {
cur_node = last_kv.merge().descend();
} else {
let right_len = last_kv.reborrow().right_edge().descend().len();
// `MINLEN + 1` to avoid readjust if merge happens on the next level.
if right_len < node::MIN_LEN + 1 {
last_kv.bulk_steal_left(node::MIN_LEN + 1 - right_len);
// `MIN_LEN + 1` to avoid readjust if merge happens on the next level.
if right_len < MIN_LEN + 1 {
last_kv.bulk_steal_left(MIN_LEN + 1 - right_len);
}
cur_node = last_kv.right_edge().descend();
}
@ -91,8 +92,9 @@ impl<K, V> Root<K, V> {
cur_node = first_kv.merge().descend();
} else {
let left_len = first_kv.reborrow().left_edge().descend().len();
if left_len < node::MIN_LEN + 1 {
first_kv.bulk_steal_right(node::MIN_LEN + 1 - left_len);
// `MIN_LEN + 1` to avoid readjust if merge happens on the next level.
if left_len < MIN_LEN + 1 {
first_kv.bulk_steal_right(MIN_LEN + 1 - left_len);
}
cur_node = first_kv.left_edge().descend();
}

1
library/alloc/src/lib.rs
View File

@ -72,6 +72,7 @@
#![allow(explicit_outlives_requirements)]
#![allow(incomplete_features)]
#![deny(unsafe_op_in_unsafe_fn)]
#![cfg_attr(not(bootstrap), feature(rustc_allow_const_fn_unstable))]
#![cfg_attr(not(test), feature(generator_trait))]
#![cfg_attr(test, feature(test))]
#![cfg_attr(test, feature(new_uninit))]

3
library/alloc/src/raw_vec.rs
View File

@ -150,7 +150,8 @@ impl<T> RawVec<T, Global> {
impl<T, A: AllocRef> RawVec<T, A> {
/// Like `new`, but parameterized over the choice of allocator for
/// the returned `RawVec`.
#[allow_internal_unstable(const_fn)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn))]
pub const fn new_in(alloc: A) -> Self {
// `cap: 0` means "unallocated". zero-sized types are ignored.
Self { ptr: Unique::dangling(), cap: 0, alloc }

2
library/backtrace

@ -1 +1 @@
Subproject commit a6dd47bd588c882e735675a1379d2b61719fa380
Subproject commit 8b8ea53b56f519dd7780defdd4254daaec892584

1
library/core/src/lib.rs
View File

@ -63,6 +63,7 @@
#![warn(missing_debug_implementations)]
#![allow(explicit_outlives_requirements)]
#![allow(incomplete_features)]
#![cfg_attr(not(bootstrap), feature(rustc_allow_const_fn_unstable))]
#![feature(allow_internal_unstable)]
#![feature(arbitrary_self_types)]
#![feature(asm)]

6
library/core/src/num/int_macros.rs
View File

@ -2045,7 +2045,8 @@ assert_eq!(
#[rustc_const_stable(feature = "const_int_conversion", since = "1.44.0")]
// SAFETY: const sound because integers are plain old datatypes so we can always
// transmute them to arrays of bytes
#[allow_internal_unstable(const_fn_transmute)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn_transmute))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn_transmute))]
#[inline]
pub const fn to_ne_bytes(self) -> [u8; mem::size_of::<Self>()] {
// SAFETY: integers are plain old datatypes so we can always transmute them to
@ -2193,7 +2194,8 @@ fn read_ne_", stringify!($SelfT), "(input: &mut &[u8]) -> ", stringify!($SelfT),
#[rustc_const_stable(feature = "const_int_conversion", since = "1.44.0")]
// SAFETY: const sound because integers are plain old datatypes so we can always
// transmute to them
#[allow_internal_unstable(const_fn_transmute)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn_transmute))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn_transmute))]
#[inline]
pub const fn from_ne_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
// SAFETY: integers are plain old datatypes so we can always transmute to them

6
library/core/src/num/uint_macros.rs
View File

@ -1803,7 +1803,8 @@ assert_eq!(
#[rustc_const_stable(feature = "const_int_conversion", since = "1.44.0")]
// SAFETY: const sound because integers are plain old datatypes so we can always
// transmute them to arrays of bytes
#[allow_internal_unstable(const_fn_transmute)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn_transmute))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn_transmute))]
#[inline]
pub const fn to_ne_bytes(self) -> [u8; mem::size_of::<Self>()] {
// SAFETY: integers are plain old datatypes so we can always transmute them to
@ -1951,7 +1952,8 @@ fn read_ne_", stringify!($SelfT), "(input: &mut &[u8]) -> ", stringify!($SelfT),
#[rustc_const_stable(feature = "const_int_conversion", since = "1.44.0")]
// SAFETY: const sound because integers are plain old datatypes so we can always
// transmute to them
#[allow_internal_unstable(const_fn_transmute)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn_transmute))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn_transmute))]
#[inline]
pub const fn from_ne_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
// SAFETY: integers are plain old datatypes so we can always transmute to them

3
library/core/src/slice/mod.rs
View File

@ -88,7 +88,8 @@ impl<T> [T] {
#[rustc_const_stable(feature = "const_slice_len", since = "1.32.0")]
#[inline]
// SAFETY: const sound because we transmute out the length field as a usize (which it must be)
#[allow_internal_unstable(const_fn_union)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn_union))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn_union))]
pub const fn len(&self) -> usize {
// SAFETY: this is safe because `&[T]` and `FatPtr<T>` have the same layout.
// Only `std` can make this guarantee.

3
library/core/src/str/converts.rs
View File

@ -157,7 +157,8 @@ pub fn from_utf8_mut(v: &mut [u8]) -> Result<&mut str, Utf8Error> {
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_unstable(feature = "const_str_from_utf8_unchecked", issue = "75196")]
#[allow_internal_unstable(const_fn_transmute)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn_transmute))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn_transmute))]
pub const unsafe fn from_utf8_unchecked(v: &[u8]) -> &str {
// SAFETY: the caller must guarantee that the bytes `v` are valid UTF-8.
// Also relies on `&str` and `&[u8]` having the same layout.

3
library/core/src/str/mod.rs
View File

@ -219,7 +219,8 @@ impl str {
#[rustc_const_stable(feature = "str_as_bytes", since = "1.32.0")]
#[inline(always)]
#[allow(unused_attributes)]
#[allow_internal_unstable(const_fn_transmute)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn_transmute))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn_transmute))]
pub const fn as_bytes(&self) -> &[u8] {
// SAFETY: const sound because we transmute two types with the same layout
unsafe { mem::transmute(self) }

3
library/core/src/task/wake.rs
View File

@ -130,7 +130,8 @@ impl RawWakerVTable {
#[rustc_promotable]
#[stable(feature = "futures_api", since = "1.36.0")]
#[rustc_const_stable(feature = "futures_api", since = "1.36.0")]
#[allow_internal_unstable(const_fn_fn_ptr_basics)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn_fn_ptr_basics))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn_fn_ptr_basics))]
pub const fn new(
clone: unsafe fn(*const ()) -> RawWaker,
wake: unsafe fn(*const ()),

15
library/proc_macro/src/bridge/client.rs
View File

@ -401,7 +401,8 @@ fn run_client<A: for<'a, 's> DecodeMut<'a, 's, ()>, R: Encode<()>>(
}
impl Client<fn(crate::TokenStream) -> crate::TokenStream> {
#[allow_internal_unstable(const_fn)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn))]
pub const fn expand1(f: fn(crate::TokenStream) -> crate::TokenStream) -> Self {
extern "C" fn run(
bridge: Bridge<'_>,
@ -414,7 +415,8 @@ impl Client<fn(crate::TokenStream) -> crate::TokenStream> {
}
impl Client<fn(crate::TokenStream, crate::TokenStream) -> crate::TokenStream> {
#[allow_internal_unstable(const_fn)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn))]
pub const fn expand2(
f: fn(crate::TokenStream, crate::TokenStream) -> crate::TokenStream,
) -> Self {
@ -459,7 +461,8 @@ impl ProcMacro {
}
}
#[allow_internal_unstable(const_fn)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn))]
pub const fn custom_derive(
trait_name: &'static str,
attributes: &'static [&'static str],
@ -468,7 +471,8 @@ impl ProcMacro {
ProcMacro::CustomDerive { trait_name, attributes, client: Client::expand1(expand) }
}
#[allow_internal_unstable(const_fn)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn))]
pub const fn attr(
name: &'static str,
expand: fn(crate::TokenStream, crate::TokenStream) -> crate::TokenStream,
@ -476,7 +480,8 @@ impl ProcMacro {
ProcMacro::Attr { name, client: Client::expand2(expand) }
}
#[allow_internal_unstable(const_fn)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn))]
pub const fn bang(
name: &'static str,
expand: fn(crate::TokenStream) -> crate::TokenStream,

3
library/proc_macro/src/bridge/scoped_cell.rs
View File

@ -35,7 +35,8 @@ impl<'a, 'b, T: LambdaL> DerefMut for RefMutL<'a, 'b, T> {
pub struct ScopedCell<T: LambdaL>(Cell<<T as ApplyL<'static>>::Out>);
impl<T: LambdaL> ScopedCell<T> {
#[allow_internal_unstable(const_fn)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn))]
pub const fn new(value: <T as ApplyL<'static>>::Out) -> Self {
ScopedCell(Cell::new(value))
}

1
library/proc_macro/src/lib.rs
View File

@ -18,6 +18,7 @@
test(no_crate_inject, attr(deny(warnings))),
test(attr(allow(dead_code, deprecated, unused_variables, unused_mut)))
)]
#![cfg_attr(not(bootstrap), feature(rustc_allow_const_fn_unstable))]
#![feature(nll)]
#![feature(staged_api)]
#![feature(const_fn)]

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

@ -206,6 +206,7 @@
#![needs_panic_runtime]
// std may use features in a platform-specific way
#![allow(unused_features)]
#![cfg_attr(not(bootstrap), feature(rustc_allow_const_fn_unstable))]
#![cfg_attr(test, feature(print_internals, set_stdio, update_panic_count))]
#![cfg_attr(
all(target_vendor = "fortanix", target_env = "sgx"),

3
library/std/src/net/ip.rs
View File

@ -1043,7 +1043,8 @@ impl Ipv6Addr {
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_stable(feature = "const_ipv6", since = "1.32.0")]
#[allow_internal_unstable(const_fn_transmute)]
#[cfg_attr(not(bootstrap), rustc_allow_const_fn_unstable(const_fn_transmute))]
#[cfg_attr(bootstrap, allow_internal_unstable(const_fn_transmute))]
pub const fn new(a: u16, b: u16, c: u16, d: u16, e: u16, f: u16, g: u16, h: u16) -> Ipv6Addr {
let addr16 = [
a.to_be(),

2
src/doc/rustc/src/targets/custom.md
View File

@ -14,4 +14,4 @@ To see it for a different target, add the `--target` flag:
$ rustc +nightly -Z unstable-options --target=wasm32-unknown-unknown --print target-spec-json
```
To use a custom target, see [`xargo`](https://github.com/japaric/xargo).
To use a custom target, see the (unstable) [`build-std` feature](https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#build-std) of `cargo`.

4
src/test/ui/consts/min_const_fn/allow_const_fn_ptr.rs
View File

@ -1,4 +1,4 @@
#![feature(rustc_attrs, staged_api, allow_internal_unstable)]
#![feature(rustc_attrs, staged_api, rustc_allow_const_fn_unstable)]
#![feature(const_fn_fn_ptr_basics)]
#[stable(feature = "rust1", since = "1.0.0")]
@ -8,7 +8,7 @@ const fn error(_: fn()) {}
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_stable(since="1.0.0", feature = "mep")]
#[allow_internal_unstable(const_fn_fn_ptr_basics)]
#[rustc_allow_const_fn_unstable(const_fn_fn_ptr_basics)]
const fn compiles(_: fn()) {}
fn main() {}

4
src/test/ui/consts/min_const_fn/allow_const_fn_ptr.stderr
View File

@ -8,9 +8,9 @@ help: if it is not part of the public API, make this function unstably const
|
LL | #[rustc_const_unstable(feature = "...", issue = "...")]
|
help: otherwise `#[allow_internal_unstable]` can be used to bypass stability checks
help: otherwise `#[rustc_allow_const_fn_unstable]` can be used to bypass stability checks
|
LL | #[allow_internal_unstable(const_fn_fn_ptr_basics)]
LL | #[rustc_allow_const_fn_unstable(const_fn_fn_ptr_basics)]
|
error: aborting due to previous error

4
src/test/ui/consts/min_const_fn/allow_const_fn_ptr_run_pass.rs
View File

@ -1,5 +1,5 @@
// run-pass
#![feature(allow_internal_unstable)]
#![feature(rustc_allow_const_fn_unstable)]
#![feature(const_fn_fn_ptr_basics)]
#![feature(rustc_attrs, staged_api)]
@ -7,7 +7,7 @@
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_stable(since="1.0.0", feature = "mep")]
#[allow_internal_unstable(const_fn_fn_ptr_basics)]
#[rustc_allow_const_fn_unstable(const_fn_fn_ptr_basics)]
const fn takes_fn_ptr(_: fn()) {}
const FN: fn() = || ();

4
src/test/ui/consts/min_const_fn/min_const_fn_libstd_stability.stderr
View File

@ -24,9 +24,9 @@ help: if it is not part of the public API, make this function unstably const
|
LL | #[rustc_const_unstable(feature = "...", issue = "...")]
|
help: otherwise `#[allow_internal_unstable]` can be used to bypass stability checks
help: otherwise `#[rustc_allow_const_fn_unstable]` can be used to bypass stability checks
|
LL | #[allow_internal_unstable(const_fn_floating_point_arithmetic)]
LL | #[rustc_allow_const_fn_unstable(const_fn_floating_point_arithmetic)]
|
error: `foo2_gated` is not yet stable as a const fn

4
src/test/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.stderr
View File

@ -24,9 +24,9 @@ help: if it is not part of the public API, make this function unstably const
|
LL | #[rustc_const_unstable(feature = "...", issue = "...")]
|
help: otherwise `#[allow_internal_unstable]` can be used to bypass stability checks
help: otherwise `#[rustc_allow_const_fn_unstable]` can be used to bypass stability checks
|
LL | #[allow_internal_unstable(const_fn_floating_point_arithmetic)]
LL | #[rustc_allow_const_fn_unstable(const_fn_floating_point_arithmetic)]
|
error: `foo2_gated` is not yet stable as a const fn

1
src/test/ui/feature-gates/feature-gate-allow-internal-unstable-struct.rs
View File

@ -2,6 +2,7 @@
// this needs a different test since this is done after expansion
#[allow_internal_unstable()] //~ ERROR allow_internal_unstable side-steps
//~| ERROR attribute should
struct S;
fn main() {}

11
src/test/ui/feature-gates/feature-gate-allow-internal-unstable-struct.stderr
View File

@ -6,6 +6,15 @@ LL | #[allow_internal_unstable()]
|
= help: add `#![feature(allow_internal_unstable)]` to the crate attributes to enable
error: aborting due to previous error
error: attribute should be applied to a macro
--> $DIR/feature-gate-allow-internal-unstable-struct.rs:4:1
|
LL | #[allow_internal_unstable()]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL |
LL | struct S;
| --------- not a macro
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0658`.

6
src/test/ui/feature-gates/feature-gate-rustc-allow-const-fn-unstable.rs Normal file
View File

@ -0,0 +1,6 @@
#![allow(unused_macros)]
#[rustc_allow_const_fn_unstable()] //~ ERROR rustc_allow_const_fn_unstable side-steps
const fn foo() { }
fn main() {}

12
src/test/ui/feature-gates/feature-gate-rustc-allow-const-fn-unstable.stderr Normal file
View File

@ -0,0 +1,12 @@
error[E0658]: rustc_allow_const_fn_unstable side-steps feature gating and stability checks
--> $DIR/feature-gate-rustc-allow-const-fn-unstable.rs:3:1
|
LL | #[rustc_allow_const_fn_unstable()]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #69399 <https://github.com/rust-lang/rust/issues/69399> for more information
= help: add `#![feature(rustc_allow_const_fn_unstable)]` to the crate attributes to enable
error: aborting due to previous error
For more information about this error, try `rustc --explain E0658`.

12
src/test/ui/lint/reasons-forbidden.rs
View File

@ -5,6 +5,9 @@
//~^ NOTE `forbid` level set here
//~| NOTE `forbid` level set here
//~| NOTE `forbid` level set here
//~| NOTE `forbid` level set here
//~| NOTE `forbid` level set here
//~| NOTE `forbid` level set here
reason = "our errors & omissions insurance policy doesn't cover unsafe Rust"
)]
@ -17,9 +20,18 @@ fn main() {
//~^ ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust

41
src/test/ui/lint/reasons-forbidden.stderr
View File

@ -1,5 +1,5 @@
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:16:13
--> $DIR/reasons-forbidden.rs:19:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
@ -10,7 +10,7 @@ LL | #[allow(unsafe_code)]
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:16:13
--> $DIR/reasons-forbidden.rs:19:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
@ -21,7 +21,7 @@ LL | #[allow(unsafe_code)]
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:16:13
--> $DIR/reasons-forbidden.rs:19:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
@ -31,6 +31,39 @@ LL | #[allow(unsafe_code)]
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error: aborting due to 3 previous errors
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:19:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
...
LL | #[allow(unsafe_code)]
| ^^^^^^^^^^^ overruled by previous forbid
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:19:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
...
LL | #[allow(unsafe_code)]
| ^^^^^^^^^^^ overruled by previous forbid
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:19:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
...
LL | #[allow(unsafe_code)]
| ^^^^^^^^^^^ overruled by previous forbid
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error: aborting due to 6 previous errors
For more information about this error, try `rustc --explain E0453`.

12
src/test/ui/macros/auxiliary/issue-75982.rs Normal file
View File

@ -0,0 +1,12 @@
const _: () = {
#[macro_export]
macro_rules! first_macro {
() => {}
}
mod foo {
#[macro_export]
macro_rules! second_macro {
() => {}
}
}
};

13
src/test/ui/macros/issue-75982-foreign-macro-weird-mod.rs Normal file
View File

@ -0,0 +1,13 @@
// aux-build:issue-75982.rs
// check-pass
// Regression test for issue #75982
// Tests that don't ICE when invoking a foreign macro
// that occurs inside a module with a weird parent.
extern crate issue_75982;
fn main() {
issue_75982::first_macro!();
issue_75982::second_macro!();
}

2
src/tools/clippy/clippy_lints/src/utils/author.rs
View File

@ -130,7 +130,7 @@ impl<'tcx> LateLintPass<'tcx> for Author {
}
fn check_stmt(&mut self, cx: &LateContext<'tcx>, stmt: &'tcx hir::Stmt<'_>) {
if !has_attr(cx.sess(), stmt.kind.attrs()) {
if !has_attr(cx.sess(), stmt.kind.attrs(|id| cx.tcx.hir().item(id.id))) {
return;
}
prelude();

2
src/tools/clippy/clippy_lints/src/utils/inspector.rs
View File

@ -109,7 +109,7 @@ impl<'tcx> LateLintPass<'tcx> for DeepCodeInspector {
}
fn check_stmt(&mut self, cx: &LateContext<'tcx>, stmt: &'tcx hir::Stmt<'_>) {
if !has_attr(cx.sess(), stmt.kind.attrs()) {
if !has_attr(cx.sess(), stmt.kind.attrs(|id| cx.tcx.hir().item(id.id))) {
return;
}
match stmt.kind {