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Pass ErrorGuaranteed to cycle error

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This commit is contained in:
Michael Goulet 2023-08-27 21:32:55 +00:00
parent 668bf8c593
commit e7b3c94b0e
7 changed files with 59 additions and 24 deletions
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5
compiler/rustc_middle/src/query/plumbing.rs
View File

@ -19,7 +19,7 @@ use rustc_query_system::dep_graph::SerializedDepNodeIndex;
pub(crate) use rustc_query_system::query::QueryJobId;
use rustc_query_system::query::*;
use rustc_query_system::HandleCycleError;
use rustc_span::{Span, DUMMY_SP};
use rustc_span::{ErrorGuaranteed, Span, DUMMY_SP};
use std::ops::Deref;
pub struct QueryKeyStringCache {
@ -52,7 +52,8 @@ pub struct DynamicQuery<'tcx, C: QueryCache> {
pub loadable_from_disk:
fn(tcx: TyCtxt<'tcx>, key: &C::Key, index: SerializedDepNodeIndex) -> bool,
pub hash_result: HashResult<C::Value>,
pub value_from_cycle_error: fn(tcx: TyCtxt<'tcx>, cycle: &[QueryInfo<DepKind>]) -> C::Value,
pub value_from_cycle_error:
fn(tcx: TyCtxt<'tcx>, cycle: &[QueryInfo<DepKind>], guar: ErrorGuaranteed) -> C::Value,
pub format_value: fn(&C::Value) -> String,
}

53
compiler/rustc_middle/src/values.rs
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@ -8,20 +8,28 @@ use rustc_middle::ty::{self, Ty, TyCtxt};
use rustc_query_system::query::QueryInfo;
use rustc_query_system::Value;
use rustc_span::def_id::LocalDefId;
use rustc_span::Span;
use rustc_span::{ErrorGuaranteed, Span};
use std::fmt::Write;
impl<'tcx> Value<TyCtxt<'tcx>, DepKind> for Ty<'_> {
fn from_cycle_error(tcx: TyCtxt<'tcx>, _: &[QueryInfo<DepKind>]) -> Self {
fn from_cycle_error(
tcx: TyCtxt<'tcx>,
_: &[QueryInfo<DepKind>],
guar: ErrorGuaranteed,
) -> Self {
// SAFETY: This is never called when `Self` is not `Ty<'tcx>`.
// FIXME: Represent the above fact in the trait system somehow.
unsafe { std::mem::transmute::<Ty<'tcx>, Ty<'_>>(Ty::new_misc_error(tcx)) }
unsafe { std::mem::transmute::<Ty<'tcx>, Ty<'_>>(Ty::new_error(tcx, guar)) }
}
}
impl<'tcx> Value<TyCtxt<'tcx>, DepKind> for ty::SymbolName<'_> {
fn from_cycle_error(tcx: TyCtxt<'tcx>, _: &[QueryInfo<DepKind>]) -> Self {
fn from_cycle_error(
tcx: TyCtxt<'tcx>,
_: &[QueryInfo<DepKind>],
_guar: ErrorGuaranteed,
) -> Self {
// SAFETY: This is never called when `Self` is not `SymbolName<'tcx>`.
// FIXME: Represent the above fact in the trait system somehow.
unsafe {
@ -33,8 +41,12 @@ impl<'tcx> Value<TyCtxt<'tcx>, DepKind> for ty::SymbolName<'_> {
}
impl<'tcx> Value<TyCtxt<'tcx>, DepKind> for ty::Binder<'_, ty::FnSig<'_>> {
fn from_cycle_error(tcx: TyCtxt<'tcx>, stack: &[QueryInfo<DepKind>]) -> Self {
let err = Ty::new_misc_error(tcx);
fn from_cycle_error(
tcx: TyCtxt<'tcx>,
stack: &[QueryInfo<DepKind>],
guar: ErrorGuaranteed,
) -> Self {
let err = Ty::new_error(tcx, guar);
let arity = if let Some(frame) = stack.get(0)
&& frame.query.dep_kind == DepKind::fn_sig
@ -63,7 +75,11 @@ impl<'tcx> Value<TyCtxt<'tcx>, DepKind> for ty::Binder<'_, ty::FnSig<'_>> {
}
impl<'tcx> Value<TyCtxt<'tcx>, DepKind> for Representability {
fn from_cycle_error(tcx: TyCtxt<'tcx>, cycle: &[QueryInfo<DepKind>]) -> Self {
fn from_cycle_error(
tcx: TyCtxt<'tcx>,
cycle: &[QueryInfo<DepKind>],
_guar: ErrorGuaranteed,
) -> Self {
let mut item_and_field_ids = Vec::new();
let mut representable_ids = FxHashSet::default();
for info in cycle {
@ -95,22 +111,35 @@ impl<'tcx> Value<TyCtxt<'tcx>, DepKind> for Representability {
}
impl<'tcx> Value<TyCtxt<'tcx>, DepKind> for ty::EarlyBinder<Ty<'_>> {
fn from_cycle_error(tcx: TyCtxt<'tcx>, cycle: &[QueryInfo<DepKind>]) -> Self {
ty::EarlyBinder::bind(Ty::from_cycle_error(tcx, cycle))
fn from_cycle_error(
tcx: TyCtxt<'tcx>,
cycle: &[QueryInfo<DepKind>],
guar: ErrorGuaranteed,
) -> Self {
ty::EarlyBinder::bind(Ty::from_cycle_error(tcx, cycle, guar))
}
}
impl<'tcx> Value<TyCtxt<'tcx>, DepKind> for ty::EarlyBinder<ty::Binder<'_, ty::FnSig<'_>>> {
fn from_cycle_error(tcx: TyCtxt<'tcx>, cycle: &[QueryInfo<DepKind>]) -> Self {
ty::EarlyBinder::bind(ty::Binder::from_cycle_error(tcx, cycle))
fn from_cycle_error(
tcx: TyCtxt<'tcx>,
cycle: &[QueryInfo<DepKind>],
guar: ErrorGuaranteed,
) -> Self {
ty::EarlyBinder::bind(ty::Binder::from_cycle_error(tcx, cycle, guar))
}
}
impl<'tcx, T> Value<TyCtxt<'tcx>, DepKind> for Result<T, &'_ ty::layout::LayoutError<'_>> {
fn from_cycle_error(_tcx: TyCtxt<'tcx>, _cycle: &[QueryInfo<DepKind>]) -> Self {
fn from_cycle_error(
_tcx: TyCtxt<'tcx>,
_cycle: &[QueryInfo<DepKind>],
_guar: ErrorGuaranteed,
) -> Self {
// tcx.arena.alloc cannot be used because we are not allowed to use &'tcx LayoutError under
// min_specialization. Since this is an error path anyways, leaking doesn't matter (and really,
// tcx.arena.alloc is pretty much equal to leaking).
// FIXME: `Cycle` should carry the ErrorGuaranteed
Err(Box::leak(Box::new(ty::layout::LayoutError::Cycle)))
}
}

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

@ -41,7 +41,7 @@ use rustc_query_system::query::{
};
use rustc_query_system::HandleCycleError;
use rustc_query_system::Value;
use rustc_span::Span;
use rustc_span::{ErrorGuaranteed, Span};
#[macro_use]
mod plumbing;
@ -146,8 +146,9 @@ where
self,
tcx: TyCtxt<'tcx>,
cycle: &[QueryInfo<DepKind>],
guar: ErrorGuaranteed,
) -> Self::Value {
(self.dynamic.value_from_cycle_error)(tcx, cycle)
(self.dynamic.value_from_cycle_error)(tcx, cycle, guar)
}
#[inline(always)]

4
compiler/rustc_query_impl/src/plumbing.rs
View File

@ -605,8 +605,8 @@ macro_rules! define_queries {
} {
|_tcx, _key, _prev_index, _index| None
}),
value_from_cycle_error: |tcx, cycle| {
let result: queries::$name::Value<'tcx> = Value::from_cycle_error(tcx, cycle);
value_from_cycle_error: |tcx, cycle, guar| {
let result: queries::$name::Value<'tcx> = Value::from_cycle_error(tcx, cycle, guar);
erase(result)
},
loadable_from_disk: |_tcx, _key, _index| {

2
compiler/rustc_query_system/src/query/config.rs
View File

@ -8,6 +8,7 @@ use crate::query::DepNodeIndex;
use crate::query::{QueryContext, QueryInfo, QueryState};
use rustc_data_structures::fingerprint::Fingerprint;
use rustc_span::ErrorGuaranteed;
use std::fmt::Debug;
use std::hash::Hash;
@ -57,6 +58,7 @@ pub trait QueryConfig<Qcx: QueryContext>: Copy {
self,
tcx: Qcx::DepContext,
cycle: &[QueryInfo<Qcx::DepKind>],
guar: ErrorGuaranteed,
) -> Self::Value;
fn anon(self) -> bool;

8
compiler/rustc_query_system/src/query/plumbing.rs
View File

@ -148,8 +148,8 @@ where
use HandleCycleError::*;
match query.handle_cycle_error() {
Error => {
error.emit();
query.value_from_cycle_error(*qcx.dep_context(), &cycle_error.cycle)
let guar = error.emit();
query.value_from_cycle_error(*qcx.dep_context(), &cycle_error.cycle, guar)
}
Fatal => {
error.emit();
@ -157,8 +157,8 @@ where
unreachable!()
}
DelayBug => {
error.delay_as_bug();
query.value_from_cycle_error(*qcx.dep_context(), &cycle_error.cycle)
let guar = error.delay_as_bug();
query.value_from_cycle_error(*qcx.dep_context(), &cycle_error.cycle, guar)
}
}
}

6
compiler/rustc_query_system/src/values.rs
View File

@ -1,12 +1,14 @@
use rustc_span::ErrorGuaranteed;
use crate::dep_graph::{DepContext, DepKind};
use crate::query::QueryInfo;
pub trait Value<Tcx: DepContext, D: DepKind>: Sized {
fn from_cycle_error(tcx: Tcx, cycle: &[QueryInfo<D>]) -> Self;
fn from_cycle_error(tcx: Tcx, cycle: &[QueryInfo<D>], guar: ErrorGuaranteed) -> Self;
}
impl<Tcx: DepContext, T, D: DepKind> Value<Tcx, D> for T {
default fn from_cycle_error(tcx: Tcx, cycle: &[QueryInfo<D>]) -> T {
default fn from_cycle_error(tcx: Tcx, cycle: &[QueryInfo<D>], _guar: ErrorGuaranteed) -> T {
tcx.sess().abort_if_errors();
// Ideally we would use `bug!` here. But bug! is only defined in rustc_middle, and it's
// non-trivial to define it earlier.