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Update rustc to nightly-2021-05-01 #84

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merged 2 commits into from
May 1, 2021
Merged

Update rustc to nightly-2021-05-01 #84

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abe2b9c
Update rustc to nightly-2021-05-01
vakaras May 1, 2021
d1aebab
Try executing rustfmt only if it is present.
vakaras May 1, 2021
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5 changes: 4 additions & 1 deletion .github/workflows/test.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,10 @@ jobs:
- name: Run cargo tests
run: cargo test --all --verbose
- name: Check formatting
run: cargo fmt -- --check
run: |
if rustfmt --help ; then
cargo fmt -- --check
fi
- name: Check extractor
run: python3 extractor-test/test_extractor.py
- name: Compile the example packages
Expand Down
63 changes: 14 additions & 49 deletions extractor/src/check_unsafety.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,6 @@ use rustc_middle::mir::visit::{MutatingUseContext, PlaceContext, Visitor};
use rustc_middle::mir::*;
use rustc_middle::ty::cast::CastTy;
use rustc_middle::ty::{self, TyCtxt};
use rustc_mir::const_eval::is_min_const_fn;
use rustc_session::lint::builtin::{UNSAFE_OP_IN_UNSAFE_FN, UNUSED_UNSAFE};
use rustc_session::lint::Level;
use rustc_span::symbol::sym;
Expand All @@ -30,7 +29,6 @@ pub struct UnsafetyChecker<'a, 'tcx> {
body: &'a Body<'tcx>,
body_did: LocalDefId,
const_context: bool,
min_const_fn: bool,
violations: Vec<UnsafetyViolation>,
source_info: SourceInfo,
tcx: TyCtxt<'tcx>,
Expand All @@ -46,21 +44,16 @@ pub struct UnsafetyChecker<'a, 'tcx> {
impl<'a, 'tcx> UnsafetyChecker<'a, 'tcx> {
fn new(
const_context: bool,
min_const_fn: bool,
body: &'a Body<'tcx>,
body_did: LocalDefId,
tcx: TyCtxt<'tcx>,
param_env: ty::ParamEnv<'tcx>,
) -> Self {
// sanity check
if min_const_fn {
assert!(const_context);
}
Self {
body,
body_did,
const_context,
min_const_fn,
violations: vec![],
source_info: SourceInfo::outermost(body.span),
tcx,
Expand Down Expand Up @@ -98,7 +91,7 @@ impl<'a, 'tcx> Visitor<'tcx> for UnsafetyChecker<'a, 'tcx> {
let sig = func_ty.fn_sig(self.tcx);
if let hir::Unsafety::Unsafe = sig.unsafety() {
self.require_unsafe(
UnsafetyViolationKind::GeneralAndConstFn,
UnsafetyViolationKind::General,
UnsafetyViolationDetails::CallToUnsafeFunction,
)
}
Expand Down Expand Up @@ -148,7 +141,7 @@ impl<'a, 'tcx> Visitor<'tcx> for UnsafetyChecker<'a, 'tcx> {
match self.tcx.layout_scalar_valid_range(def.did) {
(Bound::Unbounded, Bound::Unbounded) => {}
_ => self.require_unsafe(
UnsafetyViolationKind::GeneralAndConstFn,
UnsafetyViolationKind::General,
UnsafetyViolationDetails::InitializingTypeWith,
),
}
Expand Down Expand Up @@ -229,7 +222,7 @@ impl<'a, 'tcx> Visitor<'tcx> for UnsafetyChecker<'a, 'tcx> {
let base_ty = base.ty(self.body, self.tcx).ty;
if base_ty.is_unsafe_ptr() {
self.require_unsafe(
UnsafetyViolationKind::GeneralAndConstFn,
UnsafetyViolationKind::General,
UnsafetyViolationDetails::DerefOfRawPointer,
)
}
Expand Down Expand Up @@ -274,15 +267,15 @@ impl<'a, 'tcx> Visitor<'tcx> for UnsafetyChecker<'a, 'tcx> {
);
if !nodrop {
self.require_unsafe(
UnsafetyViolationKind::GeneralAndConstFn,
UnsafetyViolationKind::General,
UnsafetyViolationDetails::AssignToDroppingUnionField,
);
} else {
// write to non-drop union field, safe
}
} else {
self.require_unsafe(
UnsafetyViolationKind::GeneralAndConstFn,
UnsafetyViolationKind::General,
UnsafetyViolationDetails::AccessToUnionField,
)
}
Expand Down Expand Up @@ -325,8 +318,7 @@ impl<'a, 'tcx> UnsafetyChecker<'a, 'tcx> {
Safety::Safe => {
for violation in violations {
match violation.kind {
UnsafetyViolationKind::GeneralAndConstFn
| UnsafetyViolationKind::General => {}
UnsafetyViolationKind::General => {}
UnsafetyViolationKind::UnsafeFn => {
bug!("`UnsafetyViolationKind::UnsafeFn` in an `Safe` context")
}
Expand Down Expand Up @@ -356,29 +348,6 @@ impl<'a, 'tcx> UnsafetyChecker<'a, 'tcx> {
if !violations.is_empty() {
self.used_unsafe.insert(hir_id);
}
// only some unsafety is allowed in const fn
if self.min_const_fn {
for violation in violations {
match violation.kind {
// these unsafe things are stable in const fn
UnsafetyViolationKind::GeneralAndConstFn => {}
// these things are forbidden in const fns
UnsafetyViolationKind::General => {
let mut violation = *violation;
// const fns don't need to be backwards compatible and can
// emit these violations as a hard error instead of a backwards
// compat lint
violation.kind = UnsafetyViolationKind::General;
if !self.violations.contains(&violation) {
self.violations.push(violation)
}
}
UnsafetyViolationKind::UnsafeFn => bug!(
"`UnsafetyViolationKind::UnsafeFn` in an `ExplicitUnsafe` context"
),
}
}
}
true
}
};
Expand Down Expand Up @@ -422,7 +391,7 @@ impl<'a, 'tcx> UnsafetyChecker<'a, 'tcx> {
} else {
continue;
};
self.require_unsafe(UnsafetyViolationKind::GeneralAndConstFn, details);
self.require_unsafe(UnsafetyViolationKind::General, details);
}
}
}
Expand All @@ -443,7 +412,7 @@ impl<'a, 'tcx> UnsafetyChecker<'a, 'tcx> {
.all(|feature| self_features.contains(feature))
{
self.require_unsafe(
UnsafetyViolationKind::GeneralAndConstFn,
UnsafetyViolationKind::General,
UnsafetyViolationDetails::CallToFunctionWith,
)
}
Expand Down Expand Up @@ -515,16 +484,12 @@ pub(crate) fn unsafety_check_result<'tcx>(
let param_env = tcx.param_env(def.did);

let id = tcx.hir().local_def_id_to_hir_id(def.did);
let (const_context, min_const_fn) = match tcx.hir().body_owner_kind(id) {
hir::BodyOwnerKind::Closure => (false, false),
hir::BodyOwnerKind::Fn => (
tcx.is_const_fn_raw(def.did.to_def_id()),
is_min_const_fn(tcx, def.did.to_def_id()),
),
hir::BodyOwnerKind::Const | hir::BodyOwnerKind::Static(_) => (true, false),
let const_context = match tcx.hir().body_owner_kind(id) {
hir::BodyOwnerKind::Closure => false,
hir::BodyOwnerKind::Fn => tcx.is_const_fn_raw(def.did.to_def_id()),
hir::BodyOwnerKind::Const | hir::BodyOwnerKind::Static(_) => true,
};
let mut checker =
UnsafetyChecker::new(const_context, min_const_fn, body, def.did, tcx, param_env);
let mut checker = UnsafetyChecker::new(const_context, body, def.did, tcx, param_env);
checker.visit_body(&body);

check_unused_unsafe(
Expand Down Expand Up @@ -636,7 +601,7 @@ pub fn check_unsafety(tcx: TyCtxt<'_>, def_id: LocalDefId) {
};

match kind {
UnsafetyViolationKind::GeneralAndConstFn | UnsafetyViolationKind::General => {
UnsafetyViolationKind::General => {
// once
struct_span_err!(
tcx.sess,
Expand Down
2 changes: 1 addition & 1 deletion rust-toolchain
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Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@
[toolchain]
channel = "nightly-2021-04-15"
channel = "nightly-2021-05-01"
components = [ "rustfmt", "rustc-dev", "llvm-tools-preview", "rust-src" ]