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interpret: use new OpTy::len for Len rvalue

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This avoids a `force_allocation`
This commit is contained in:
Ralf Jung 2022-08-02 20:52:15 -04:00
parent 7f442f8ba1
commit d814d10069
1 changed files with 2 additions and 2 deletions
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4
compiler/rustc_const_eval/src/interpret/step.rs
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@ -251,8 +251,8 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
Len(place) => {
let src = self.eval_place(place)?;
let mplace = self.force_allocation(&src)?;
let len = mplace.len(self)?;
let op = self.place_to_op(&src)?;
let len = op.len(self)?;
self.write_scalar(Scalar::from_machine_usize(len, self), &dest)?;
}