1 files changed, 40 insertions, 0 deletions
diff --git a/src/test/ui/specialization/auxiliary/cross_crates_defaults.rs b/src/test/ui/specialization/auxiliary/cross_crates_defaults.rs
new file mode 100644
index 000000000..1e5555355
--- /dev/null
+++ b/src/test/ui/specialization/auxiliary/cross_crates_defaults.rs
@@ -0,0 +1,40 @@
+#![feature(specialization)]
+
+// First, test only use of explicit `default` items:
+
+pub trait Foo {
+    fn foo(&self) -> bool;
+}
+
+impl<T> Foo for T {
+    default fn foo(&self) -> bool { false }
+}
+
+impl Foo for i32 {}
+
+impl Foo for i64 {
+    fn foo(&self) -> bool { true }
+}
+
+// Next, test mixture of explicit `default` and provided methods:
+
+pub trait Bar {
+    fn bar(&self) -> i32 { 0 }
+}
+
+impl<T> Bar for T {
+    default fn bar(&self) -> i32 { 0 }
+}
+
+impl Bar for i32 {
+    fn bar(&self) -> i32 { 1 }
+}
+impl<'a> Bar for &'a str {}
+
+impl<T> Bar for Vec<T> {
+    default fn bar(&self) -> i32 { 2 }
+}
+impl Bar for Vec<i32> {}
+impl Bar for Vec<i64> {
+    fn bar(&self) -> i32 { 3 }
+}