1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/rustdoc/intra-doc/auxiliary/extern-builtin-type-impl-dep.rs b/src/test/rustdoc/intra-doc/auxiliary/extern-builtin-type-impl-dep.rs
new file mode 100644
index 000000000..d9a08cb41
--- /dev/null
+++ b/src/test/rustdoc/intra-doc/auxiliary/extern-builtin-type-impl-dep.rs
@@ -0,0 +1,28 @@
+// no-prefer-dynamic
+
+#![feature(lang_items, rustc_attrs)]
+#![crate_type = "rlib"]
+#![no_std]
+
+pub struct DerefsToF64(f64);
+
+impl core::ops::Deref for DerefsToF64 {
+    type Target = f64;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+mod inner {
+    impl f64 {
+        /// [f64::clone]
+        #[rustc_allow_incoherent_impl]
+        pub fn method() {}
+    }
+}
+
+#[lang = "eh_personality"]
+fn foo() {}
+
+#[panic_handler]
+fn bar(_: &core::panic::PanicInfo) -> ! { loop {} }