Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

1 files changed, 8 insertions, 0 deletions

diff --git a/src/test/ui/on-unimplemented/feature-gate-on-unimplemented.rs b/src/test/ui/on-unimplemented/feature-gate-on-unimplemented.rs
new file mode 100644
index 000000000..3cc50e349
--- /dev/null
+++ b/src/test/ui/on-unimplemented/feature-gate-on-unimplemented.rs
@@ -0,0 +1,8 @@
+// Test that `#[rustc_on_unimplemented]` is gated by `rustc_attrs` feature gate.
+
+#[rustc_on_unimplemented = "test error `{Self}` with `{Bar}`"]
+//~^ ERROR this is an internal attribute that will never be stable
+trait Foo<Bar>
+{}
+
+fn main() {}