rollup merge of #19013: jakub-/issue-18986

Fixes #18986.

src/test/compile-fail-fulldeps/issue-18986.rs

@@ -0,0 +1,20 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// aux-build:use_from_trait_xc.rs
+
+extern crate use_from_trait_xc;
+pub use use_from_trait_xc::Trait;
+
+fn main() {
+    match () {
+        Trait { x: 42u } => () //~ ERROR use of trait `Trait` in a struct pattern
+    }
+}