add helper methods for accessing struct tail

2023-07-05 20:44:24 +02:00
parent e3de14e463
commit 7aa5f39d3b
9 changed files with 31 additions and 34 deletions
--- a/compiler/rustc_hir_analysis/src/check/wfcheck.rs
+++ b/compiler/rustc_hir_analysis/src/check/wfcheck.rs
@@ -981,7 +981,7 @@ fn check_type_defn<'tcx>(tcx: TyCtxt<'tcx>, item: &hir::Item<'tcx>, all_sized: b
            // intermediate types must be sized.
            let needs_drop_copy = || {
                packed && {
-                    let ty = tcx.type_of(variant.fields.raw.last().unwrap().did).subst_identity();
+                    let ty = tcx.type_of(variant.tail().did).subst_identity();
                    let ty = tcx.erase_regions(ty);
                    if ty.has_infer() {
                        tcx.sess