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Consider fields to be inhabited if they are unstable

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This commit is contained in:
Michael Goulet 2025-03-18 18:23:32 +00:00
parent 75530e9f72
commit f6107ca173
6 changed files with 95 additions and 1 deletions
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6
compiler/rustc_pattern_analysis/src/rustc.rs
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@ -232,7 +232,11 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> {
let is_visible =
adt.is_enum() || field.vis.is_accessible_from(cx.module, cx.tcx);
let is_uninhabited = cx.is_uninhabited(*ty);
let skip = is_uninhabited && !is_visible;
let is_unstable = cx
.tcx
.lookup_stability(field.did)
.is_some_and(|stab| stab.is_unstable());
let skip = is_uninhabited && (!is_visible || is_unstable);
(ty, PrivateUninhabitedField(skip))
});
cx.dropless_arena.alloc_from_iter(tys)