1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/rustdoc/issue-50159.rs b/src/test/rustdoc/issue-50159.rs
new file mode 100644
index 000000000..d88c29217
--- /dev/null
+++ b/src/test/rustdoc/issue-50159.rs
@@ -0,0 +1,20 @@
+pub trait Signal {
+    type Item;
+}
+
+pub trait Signal2 {
+    type Item2;
+}
+
+impl<B, C> Signal2 for B where B: Signal<Item = C> {
+    type Item2 = C;
+}
+
+// @has issue_50159/struct.Switch.html
+// @has - '//h3[@class="code-header in-band"]' 'impl<B> Send for Switch<B> where <B as Signal>::Item: Send'
+// @has - '//h3[@class="code-header in-band"]' 'impl<B> Sync for Switch<B> where <B as Signal>::Item: Sync'
+// @count - '//*[@id="implementations-list"]//*[@class="impl"]' 0
+// @count - '//*[@id="synthetic-implementations-list"]//*[@class="impl has-srclink"]' 5
+pub struct Switch<B: Signal> {
+    pub inner: <B as Signal2>::Item2,
+}