Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir-ty/src/next_solver/util.rs')
| -rw-r--r-- | crates/hir-ty/src/next_solver/util.rs | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/crates/hir-ty/src/next_solver/util.rs b/crates/hir-ty/src/next_solver/util.rs index 9a1b476976..c175062bda 100644 --- a/crates/hir-ty/src/next_solver/util.rs +++ b/crates/hir-ty/src/next_solver/util.rs @@ -13,13 +13,16 @@ use rustc_type_ir::{ solve::SizedTraitKind, }; -use crate::next_solver::{ - BoundConst, FxIndexMap, ParamEnv, Placeholder, PlaceholderConst, PlaceholderRegion, - PolyTraitRef, - infer::{ - InferCtxt, - traits::{Obligation, ObligationCause, PredicateObligation}, +use crate::{ + next_solver::{ + BoundConst, FxIndexMap, ParamEnv, Placeholder, PlaceholderConst, PlaceholderRegion, + PolyTraitRef, + infer::{ + InferCtxt, + traits::{Obligation, ObligationCause, PredicateObligation}, + }, }, + representability::Representability, }; use super::{ @@ -419,10 +422,18 @@ pub fn sizedness_constraint_for_ty<'db>( .next_back() .and_then(|ty| sizedness_constraint_for_ty(interner, sizedness, ty)), - Adt(adt, args) => adt.struct_tail_ty(interner).and_then(|tail_ty| { - let tail_ty = tail_ty.instantiate(interner, args); - sizedness_constraint_for_ty(interner, sizedness, tail_ty) - }), + Adt(adt, args) => { + if crate::representability::representability(interner.db, adt.def_id().0) + == Representability::Infinite + { + return None; + } + + adt.struct_tail_ty(interner).and_then(|tail_ty| { + let tail_ty = tail_ty.instantiate(interner, args); + sizedness_constraint_for_ty(interner, sizedness, tail_ty) + }) + } Placeholder(..) | Bound(..) | Infer(..) => { panic!("unexpected type `{ty:?}` in sizedness_constraint_for_ty") |