Make dyn* cast into a coercion

2022-09-14 23:20:03 +00:00
parent edabf59ca4
commit 76386bd65e
13 changed files with 73 additions and 68 deletions
--- a/compiler/rustc_middle/src/mir/mod.rs
+++ b/compiler/rustc_middle/src/mir/mod.rs
@@ -1824,7 +1824,6 @@ impl<'tcx> Rvalue<'tcx> {
            // While the model is undecided, we should be conservative. See
            // <https://www.ralfj.de/blog/2022/04/11/provenance-exposed.html>
            Rvalue::Cast(CastKind::PointerExposeAddress, _, _) => false,
-            Rvalue::Cast(CastKind::DynStar, _, _) => false,

            Rvalue::Use(_)
            | Rvalue::CopyForDeref(_)
@@ -1841,7 +1840,8 @@ impl<'tcx> Rvalue<'tcx> {
                | CastKind::FnPtrToPtr
                | CastKind::PtrToPtr
                | CastKind::Pointer(_)
-                | CastKind::PointerFromExposedAddress,
+                | CastKind::PointerFromExposedAddress
+                | CastKind::DynStar,
                _,
                _,
            )