bjoernager/rust
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add test

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This commit is contained in:
Bastian Kauschke 2020-09-21 20:28:52 +02:00
parent 67f319c30b
commit 8fc782afc2
3 changed files with 59 additions and 0 deletions
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6
compiler/rustc_lint/src/internal.rs
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@ -191,6 +191,12 @@ fn is_ty_or_ty_ctxt(cx: &LateContext<'_>, ty: &Ty<'_>) -> Option<String> {
Res::SelfTy(None, Some((did, _))) => {
if let ty::Adt(adt, substs) = cx.tcx.type_of(did).kind() {
if cx.tcx.is_diagnostic_item(sym::Ty, adt.did) {
// NOTE: This path is currently unreachable as `Ty<'tcx>` is
// defined as a type alias meaning that `impl<'tcx> Ty<'tcx>`
// is not actually allowed.
//
// I(@lcnr) still kept this branch in so we don't miss this
// if we ever change it in the future.
return Some(format!("Ty<{}>", substs[0]));
} else if cx.tcx.is_diagnostic_item(sym::TyCtxt, adt.did) {
return Some(format!("TyCtxt<{}>", substs[0]));