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Erase regions before calculating layout for packed field capture #92242

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Feb 11, 2022
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Erase regions before calculating layout for packed field capture #92242

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3 changes: 2 additions & 1 deletion compiler/rustc_typeck/src/check/upvar.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1639,7 +1639,8 @@ fn restrict_repr_packed_field_ref_capture<'tcx>(
match p.kind {
ProjectionKind::Field(..) => match ty.kind() {
ty::Adt(def, _) if def.repr.packed() => {
match tcx.layout_of(param_env.and(p.ty)) {
// We erase regions here because they cannot be hashed
match tcx.layout_of(param_env.and(tcx.erase_regions(p.ty))) {
Ok(layout) if layout.align.abi.bytes() == 1 => {
// if the alignment is 1, the type can't be further
// disaligned.
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