Rollup merge of #124909 - compiler-errors:struct-tail-leftovers, r=compiler-errors

Reapply the part of #124548 that bors forgot

https://github.com/rust-lang/rust/pull/124548#issuecomment-2101311205
r? compiler-errors

compiler/rustc_middle/src/ty/layout.rs

@@ -338,13 +338,14 @@ impl<'tcx> SizeSkeleton<'tcx> {
                     pointee,
                     |ty| match tcx.try_normalize_erasing_regions(param_env, ty) {
                         Ok(ty) => ty,
-                        Err(_e) => {
+                        Err(e) => Ty::new_error_with_message(
-                            if let Some(guar) = tcx.dcx().has_errors() {
+                            tcx,
-                                Ty::new_error(tcx, guar)
+                            DUMMY_SP,
-                            } else {
+                            format!(
-                                bug!("normalization failed, but no errors reported");
+                                "normalization failed for {} but no errors reported",
-                            }
+                                e.get_type_for_failure()
-                        }
+                            ),
+                        ),
                     },
                     || {},
                 );