ty: handle UnsafeBinder in pointer_kind, metadata, and projections#565
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SebTardif wants to merge 1 commit into
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ty: handle UnsafeBinder in pointer_kind, metadata, and projections#565SebTardif wants to merge 1 commit into
SebTardif wants to merge 1 commit into
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Avoid todo!() ICEs on unstable unsafe binders by following the inner type after erasing binder regions (same pattern as discriminant_ty / variant_range elsewhere). - hir_typeck::pointer_kind: recurse into inner type - ptr_metadata_ty_or_tail: delegate to inner - is_trivially_not_async_drop: conservative false without TyCtxt - project DiscriminantKind/Pointee: treat as inner type Closes #525 Signed-off-by: Sebastien Tardif <sebtardif@ncf.ca>
This was referenced Jun 24, 2026
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Summary
Replace several
todo!("FIXME(unsafe_binder)")paths with inner-type delegation after erasing binder regions, matching existingdiscriminant_ty/variant_rangehandling.Files:
compiler/rustc_hir_typeck/src/cast.rs(pointer_kind)compiler/rustc_middle/src/ty/sty.rs(ptr_metadata_ty_or_tail)compiler/rustc_middle/src/ty/util.rs(is_trivially_not_async_drop, conservativefalse)compiler/rustc_trait_selection/src/traits/project.rs(DiscriminantKind / Pointee)Closes #525
Closes #609
Closes #610
Note
Feature is still unstable (
unsafe_binder); this removes latent ICEs when such types reach these queries during experimentation or incremental enablement. Remaining todos (const_eval validity, mangling, rustc_public) are out of scope.Origin
9a1c5eb5b385Test plan
sty.rs./x.py test compiler/rustc_hir_typeck compiler/rustc_middle(optional)