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-rw-r--r--compiler/rustc_const_eval/src/interpret/projection.rs10
1 files changed, 10 insertions, 0 deletions
diff --git a/compiler/rustc_const_eval/src/interpret/projection.rs b/compiler/rustc_const_eval/src/interpret/projection.rs
index 77da8f104..6b2e2bb8a 100644
--- a/compiler/rustc_const_eval/src/interpret/projection.rs
+++ b/compiler/rustc_const_eval/src/interpret/projection.rs
@@ -350,6 +350,11 @@ where
) -> InterpResult<'tcx, PlaceTy<'tcx, M::Provenance>> {
use rustc_middle::mir::ProjectionElem::*;
Ok(match proj_elem {
+ OpaqueCast(ty) => {
+ let mut place = base.clone();
+ place.layout = self.layout_of(ty)?;
+ place
+ }
Field(field, _) => self.place_field(base, field.index())?,
Downcast(_, variant) => self.place_downcast(base, variant)?,
Deref => self.deref_operand(&self.place_to_op(base)?)?.into(),
@@ -374,6 +379,11 @@ where
) -> InterpResult<'tcx, OpTy<'tcx, M::Provenance>> {
use rustc_middle::mir::ProjectionElem::*;
Ok(match proj_elem {
+ OpaqueCast(ty) => {
+ let mut op = base.clone();
+ op.layout = self.layout_of(ty)?;
+ op
+ }
Field(field, _) => self.operand_field(base, field.index())?,
Downcast(_, variant) => self.operand_downcast(base, variant)?,
Deref => self.deref_operand(base)?.into(),