Revert "Revert "Rollup merge of #98582 - oli-obk:unconstrained_opaque_type, r=estebank""

This reverts commit 4a742a691e.
2022-07-27 11:58:34 +00:00
parent 5d664f7a8f
commit 40e2de8c41
30 changed files with 250 additions and 37 deletions
--- a/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
@@ -169,6 +169,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                        ..,
                        ProjectionElem::Index(_)
                        | ProjectionElem::ConstantIndex { .. }
+                        | ProjectionElem::OpaqueCast { .. }
                        | ProjectionElem::Subslice { .. }
                        | ProjectionElem::Downcast(..),
                    ],