bjoernager/rust
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Use a proper probe for shadowing impl

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This commit is contained in:
Michael Goulet 2024-05-07 11:09:21 -04:00
parent 9105c57b7f
commit dbd2ca6478
5 changed files with 39 additions and 22 deletions
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19
compiler/rustc_trait_selection/src/solve/assembly/mod.rs
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@ -1,7 +1,7 @@
//! Code shared by trait and projection goals for candidate assembly.
use crate::solve::GoalSource;
use crate::solve::{inspect, EvalCtxt, SolverMode};
use crate::solve::{EvalCtxt, SolverMode};
use rustc_hir::def_id::DefId;
use rustc_infer::traits::query::NoSolution;
use rustc_middle::bug;
@ -16,7 +16,6 @@ use rustc_middle::ty::{fast_reject, TypeFoldable};
use rustc_middle::ty::{ToPredicate, TypeVisitableExt};
use rustc_span::{ErrorGuaranteed, DUMMY_SP};
use std::fmt::Debug;
use std::mem;
pub(super) mod structural_traits;
@ -792,17 +791,16 @@ impl<'tcx> EvalCtxt<'_, 'tcx> {
goal: Goal<'tcx, G>,
candidates: &mut Vec<Candidate<'tcx>>,
) {
// HACK: We temporarily remove the `ProofTreeBuilder` to
// avoid adding `Trait` candidates to the candidates used
// to prove the current goal.
let inspect = mem::replace(&mut self.inspect, inspect::ProofTreeBuilder::new_noop());
let tcx = self.tcx();
let trait_goal: Goal<'tcx, ty::TraitPredicate<'tcx>> =
goal.with(tcx, goal.predicate.trait_ref(tcx));
let mut trait_candidates_from_env = Vec::new();
self.assemble_param_env_candidates(trait_goal, &mut trait_candidates_from_env);
self.assemble_alias_bound_candidates(trait_goal, &mut trait_candidates_from_env);
let mut trait_candidates_from_env = vec![];
self.probe(|_| ProbeKind::ShadowedEnvProbing).enter(|ecx| {
ecx.assemble_param_env_candidates(trait_goal, &mut trait_candidates_from_env);
ecx.assemble_alias_bound_candidates(trait_goal, &mut trait_candidates_from_env);
});
if !trait_candidates_from_env.is_empty() {
let trait_env_result = self.merge_candidates(trait_candidates_from_env);
match trait_env_result.unwrap().value.certainty {
@ -831,7 +829,6 @@ impl<'tcx> EvalCtxt<'_, 'tcx> {
}
}
}
self.inspect = inspect;
}
/// If there are multiple ways to prove a trait or projection goal, we have