1 files changed, 37 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/derivable_impls.rs b/src/tools/clippy/tests/ui/derivable_impls.rs
index 14af419bc..def6e4116 100644
--- a/src/tools/clippy/tests/ui/derivable_impls.rs
+++ b/src/tools/clippy/tests/ui/derivable_impls.rs
@@ -267,4 +267,41 @@ impl Default for NonExhaustiveEnum {
     }
 }
 
+// https://github.com/rust-lang/rust-clippy/issues/10396
+
+#[derive(Default)]
+struct DefaultType;
+
+struct GenericType<T = DefaultType> {
+    t: T,
+}
+
+impl Default for GenericType {
+    fn default() -> Self {
+        Self { t: Default::default() }
+    }
+}
+
+struct InnerGenericType<T> {
+    t: T,
+}
+
+impl Default for InnerGenericType<DefaultType> {
+    fn default() -> Self {
+        Self { t: Default::default() }
+    }
+}
+
+struct OtherGenericType<T = DefaultType> {
+    inner: InnerGenericType<T>,
+}
+
+impl Default for OtherGenericType {
+    fn default() -> Self {
+        Self {
+            inner: Default::default(),
+        }
+    }
+}
+
 fn main() {}