Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/ui/traits/negative-impls/negative-specializes-positive-item.rs b/tests/ui/traits/negative-impls/negative-specializes-positive-item.rs
new file mode 100644
index 000000000..4281eedaf
--- /dev/null
+++ b/tests/ui/traits/negative-impls/negative-specializes-positive-item.rs
@@ -0,0 +1,13 @@
+#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
+#![feature(negative_impls)]
+
+// Negative impl for u32 cannot "specialize" the base impl.
+trait MyTrait {
+    fn foo();
+}
+impl<T> MyTrait for T {
+    default fn foo() {}
+}
+impl !MyTrait for u32 {} //~ ERROR E0751
+
+fn main() {}