Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/ui/hygiene/specialization.rs b/tests/ui/hygiene/specialization.rs
new file mode 100644
index 000000000..656aa880a
--- /dev/null
+++ b/tests/ui/hygiene/specialization.rs
@@ -0,0 +1,25 @@
+// run-pass
+// ignore-pretty pretty-printing is unhygienic
+
+#![feature(decl_macro)]
+
+trait Tr {
+    fn f(&self) -> &'static str {
+        "This shouldn't happen"
+    }
+}
+
+pub macro m($t:ty) {
+    impl Tr for $t {
+        fn f(&self) -> &'static str {
+            "Run me"
+        }
+    }
+}
+
+struct S;
+m!(S);
+
+fn main() {
+    assert_eq!(S.f(), "Run me");
+}