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offset_of

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This commit is contained in:
DrMeepster 2022-09-11 00:37:49 -07:00
parent fe3e38306f
commit 9dd0653ed5
1 changed files with 4 additions and 1 deletions
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5
src/base.rs
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@ -781,12 +781,15 @@ fn is_fat_ptr<'tcx>(fx: &FunctionCx<'_, '_, 'tcx>, ty: Ty<'tcx>) -> bool {
let operand = operand.load_scalar(fx);
lval.write_cvalue(fx, CValue::by_val(operand, box_layout));
}
Rvalue::NullaryOp(null_op, ty) => {
Rvalue::NullaryOp(ref null_op, ty) => {
assert!(lval.layout().ty.is_sized(fx.tcx, ParamEnv::reveal_all()));
let layout = fx.layout_of(fx.monomorphize(ty));
let val = match null_op {
NullOp::SizeOf => layout.size.bytes(),
NullOp::AlignOf => layout.align.abi.bytes(),
NullOp::OffsetOf(fields) => {
layout.offset_of_subfield(fx, fields.iter().map(|f| f.index())).bytes()
}
};
let val = CValue::const_val(fx, fx.layout_of(fx.tcx.types.usize), val.into());
lval.write_cvalue(fx, val);