fix for rustc master

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Oliver S̶c̶h̶n̶e̶i̶d̶e̶r Scherer 2018-10-14 22:55:26 +02:00 committed by GitHub
parent 1cb90cc48a
commit 212a4fe4f4
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@ -276,7 +276,7 @@ fn has_is_empty(cx: &LateContext<'_, '_>, expr: &Expr) -> bool {
let ty = &walk_ptrs_ty(cx.tables.expr_ty(expr));
match ty.sty {
ty::Dynamic(ref tt, ..) => cx.tcx
.associated_items(tt.principal().expect("trait impl not found").def_id())
.associated_items(tt.principal().def_id())
.any(|item| is_is_empty(cx, &item)),
ty::Projection(ref proj) => has_is_empty_impl(cx, proj.item_def_id),
ty::Adt(id, _) => has_is_empty_impl(cx, id.did),