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offset_of: allow (unstably) taking the offset of slice tail fields

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This commit is contained in:
Ralf Jung 2024-06-08 11:26:56 +02:00
parent 16e8803579
commit eb584a23bf
17 changed files with 215 additions and 46 deletions
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5
compiler/rustc_const_eval/src/interpret/step.rs
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@ -253,7 +253,10 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
Scalar::from_target_usize(val, self)
}
mir::NullOp::OffsetOf(fields) => {
let val = layout.offset_of_subfield(self, fields.iter()).bytes();
let val = self
.tcx
.offset_of_subfield(self.param_env, layout, fields.iter())
.bytes();
Scalar::from_target_usize(val, self)
}
mir::NullOp::UbChecks => Scalar::from_bool(self.tcx.sess.ub_checks()),