bjoernager/rust
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use alias-relate to structurally normalize in the solver

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This commit is contained in:
lcnr 2024-02-01 12:34:38 +01:00
parent bbe2f6c0b2
commit 3e3e207ad7
16 changed files with 136 additions and 119 deletions
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10
compiler/rustc_trait_selection/src/solve/trait_goals.rs
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@ -581,11 +581,11 @@ impl<'tcx> assembly::GoalKind<'tcx> for TraitPredicate<'tcx> {
let a_ty = goal.predicate.self_ty();
// We need to normalize the b_ty since it's matched structurally
// in the other functions below.
let b_ty = match ecx
.try_normalize_ty(goal.param_env, goal.predicate.trait_ref.args.type_at(1))
{
Some(b_ty) => b_ty,
None => return vec![misc_candidate(ecx, Certainty::OVERFLOW)],
let Ok(b_ty) = ecx.structurally_normalize_ty(
goal.param_env,
goal.predicate.trait_ref.args.type_at(1),
) else {
return vec![];
};
let goal = goal.with(ecx.tcx(), (a_ty, b_ty));