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Diffstat (limited to 'crates/hir-ty/src/chalk_db.rs')
| -rw-r--r-- | crates/hir-ty/src/chalk_db.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/crates/hir-ty/src/chalk_db.rs b/crates/hir-ty/src/chalk_db.rs index 376daccbda..cd799c03dd 100644 --- a/crates/hir-ty/src/chalk_db.rs +++ b/crates/hir-ty/src/chalk_db.rs @@ -637,7 +637,10 @@ pub(crate) fn associated_ty_data_query( .fill_with_bound_vars(crate::DebruijnIndex::INNERMOST, 0) .build(); let pro_ty = TyBuilder::assoc_type_projection(db, type_alias, Some(trait_subst)) - .fill_with_bound_vars(crate::DebruijnIndex::INNERMOST, generic_params.len_self()) + .fill_with_bound_vars( + crate::DebruijnIndex::INNERMOST, + generic_params.parent_generics().map_or(0, |it| it.len()), + ) .build(); let self_ty = TyKind::Alias(AliasTy::Projection(pro_ty)).intern(Interner); |