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Address nits, add test for implicit dyn-star coercion without feature gate

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This commit is contained in:
Michael Goulet 2022-10-14 04:55:07 +00:00
parent 0cb217d29b
commit 8c7e836abb
6 changed files with 50 additions and 3 deletions
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7
compiler/rustc_codegen_ssa/src/base.rs
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@ -270,8 +270,11 @@ pub fn cast_to_dyn_star<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
dst_ty: Ty<'tcx>,
old_info: Option<Bx::Value>,
) -> (Bx::Value, Bx::Value) {
debug!("unsize_ptr: {:?} => {:?}", src_ty_and_layout.ty, dst_ty);
assert!(matches!(dst_ty.kind(), ty::Dynamic(_, _, ty::DynStar)));
debug!("cast_to_dyn_star: {:?} => {:?}", src_ty_and_layout.ty, dst_ty);
assert!(
matches!(dst_ty.kind(), ty::Dynamic(_, _, ty::DynStar)),
"destination type must be a dyn*"
);
// FIXME(dyn-star): this is probably not the best way to check if this is
// a pointer, and really we should ensure that the value is a suitable
// pointer earlier in the compilation process.