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-rw-r--r--src/test/ui/issues/issue-55380.rs28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-55380.rs b/src/test/ui/issues/issue-55380.rs
new file mode 100644
index 000000000..f7cb296d3
--- /dev/null
+++ b/src/test/ui/issues/issue-55380.rs
@@ -0,0 +1,28 @@
+// run-pass
+#![feature(specialization)]
+//~^ WARN the feature `specialization` is incomplete
+
+pub trait Foo {
+ fn abc() -> u32;
+ fn def() -> u32;
+}
+
+pub trait Marker {}
+
+impl Marker for () {}
+
+impl<T> Foo for T {
+ default fn abc() -> u32 { 16 }
+ default fn def() -> u32 { 42 }
+}
+
+impl<T: Marker> Foo for T {
+ fn def() -> u32 {
+ Self::abc()
+ }
+}
+
+fn main() {
+ assert_eq!(<()>::def(), 16);
+ assert_eq!(<i32>::def(), 42);
+}