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Miri: recursive validity: also recurse into Boxes

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This commit is contained in:
Ralf Jung 2026-02-17 15:13:58 +01:00
parent 3f6250a7bb
commit f5421609d6
3 changed files with 22 additions and 6 deletions
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7
compiler/rustc_const_eval/src/interpret/validity.rs
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@ -647,13 +647,8 @@ impl<'rt, 'tcx, M: Machine<'tcx>> ValidityVisitor<'rt, 'tcx, M> {
}
} else {
// This is not CTFE, so it's Miri with recursive checking.
// FIXME: we do *not* check behind boxes, since creating a new box first creates it uninitialized
// and then puts the value in there, so briefly we have a box with uninit contents.
// FIXME: should we also skip `UnsafeCell` behind shared references? Currently that is not
// FIXME: should we also `UnsafeCell` behind shared references? Currently that is not
// needed since validation reads bypass Stacked Borrows and data race checks.
if matches!(ptr_kind, PointerKind::Box) {
return interp_ok(());
}
}
let path = &self.path;
ref_tracking.track(place, || {