diff --git a/src/librustc_mir/interpret/operand.rs b/src/librustc_mir/interpret/operand.rs index 669e00c1f01..a674389a936 100644 --- a/src/librustc_mir/interpret/operand.rs +++ b/src/librustc_mir/interpret/operand.rs @@ -467,23 +467,34 @@ impl<'a, 'mir, 'tcx, M: Machine<'a, 'mir, 'tcx>> InterpretCx<'a, 'mir, 'tcx, M> mir_place: &mir::Place<'tcx>, layout: Option>, ) -> EvalResult<'tcx, OpTy<'tcx, M::PointerTag>> { - use rustc::mir::Place::*; + use rustc::mir::Place; use rustc::mir::PlaceBase; - let op = match mir_place { - Base(PlaceBase::Local(mir::RETURN_PLACE)) => return err!(ReadFromReturnPointer), - Base(PlaceBase::Local(local)) => self.access_local(self.frame(), *local, layout)?, - Base(PlaceBase::Static(place_static)) => { - self.eval_static_to_mplace(place_static)?.into() + + mir_place.iterate(|place_base, place_projection| { + let mut op = match place_base { + PlaceBase::Local(mir::RETURN_PLACE) => return err!(ReadFromReturnPointer), + PlaceBase::Local(local) => { + // FIXME use place_projection.is_empty() when is available + let layout = if let Place::Base(_) = mir_place { + layout + } else { + None + }; + + self.access_local(self.frame(), *local, layout)? + } + PlaceBase::Static(place_static) => { + self.eval_static_to_mplace(place_static)?.into() + } + }; + + for proj in place_projection { + op = self.operand_projection(op, &proj.elem)? } - Projection(proj) => { - let op = self.eval_place_to_op(&proj.base, None)?; - self.operand_projection(op, &proj.elem)? - } - }; - - trace!("eval_place_to_op: got {:?}", *op); - Ok(op) + trace!("eval_place_to_op: got {:?}", *op); + Ok(op) + }) } /// Evaluate the operand, returning a place where you can then find the data.