bjoernager/rust
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Restrict Fake Read precision

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Roxane 2021-05-25 18:30:54 -04:00
parent e51830b90a
commit 027d73dcad
1 changed files with 5 additions and 0 deletions
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5
compiler/rustc_typeck/src/check/upvar.rs
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@ -1588,6 +1588,11 @@ impl<'a, 'tcx> InferBorrowKind<'a, 'tcx> {
impl<'a, 'tcx> euv::Delegate<'tcx> for InferBorrowKind<'a, 'tcx> { impl<'a, 'tcx> euv::Delegate<'tcx> for InferBorrowKind<'a, 'tcx> {
fn fake_read(&mut self, place: Place<'tcx>, cause: FakeReadCause, diag_expr_id: hir::HirId) { fn fake_read(&mut self, place: Place<'tcx>, cause: FakeReadCause, diag_expr_id: hir::HirId) {
if let PlaceBase::Upvar(_) = place.base { if let PlaceBase::Upvar(_) = place.base {
// We need to restrict Fake Read precision to avoid fake reading unsafe code,
// such as deref of a raw pointer.
let place = restrict_capture_precision(place);
let place =
restrict_repr_packed_field_ref_capture(self.fcx.tcx, self.fcx.param_env, &place);
self.fake_reads.push((place, cause, diag_expr_id)); self.fake_reads.push((place, cause, diag_expr_id));
} }
} }