1 files changed, 49 insertions, 0 deletions
diff --git a/tests/rustdoc-ui/impl-fn-nesting.rs b/tests/rustdoc-ui/impl-fn-nesting.rs
new file mode 100644
index 00000000000..a927f6bd799
--- /dev/null
+++ b/tests/rustdoc-ui/impl-fn-nesting.rs
@@ -0,0 +1,49 @@
+// Ensure that rustdoc gives errors for trait impls inside function bodies that don't resolve.
+// See https://github.com/rust-lang/rust/pull/73566
+pub struct ValidType;
+pub trait ValidTrait {}
+pub trait NeedsBody {
+    type Item;
+    fn f();
+}
+
+/// This function has docs
+pub fn f<B: UnknownBound>(a: UnknownType, b: B) {
+//~^ ERROR cannot find trait `UnknownBound` in this scope
+//~| ERROR cannot find type `UnknownType` in this scope
+    impl UnknownTrait for ValidType {} //~ ERROR cannot find trait `UnknownTrait`
+    impl<T: UnknownBound> UnknownTrait for T {}
+    //~^ ERROR cannot find trait `UnknownBound` in this scope
+    //~| ERROR cannot find trait `UnknownTrait` in this scope
+    impl ValidTrait for UnknownType {}
+    //~^ ERROR cannot find type `UnknownType` in this scope
+    impl ValidTrait for ValidType where ValidTrait: UnknownBound {}
+    //~^ ERROR cannot find trait `UnknownBound` in this scope
+
+    /// This impl has documentation
+    impl NeedsBody for ValidType {
+        type Item = UnknownType;
+        //~^ ERROR cannot find type `UnknownType` in this scope
+
+        /// This function has documentation
+        fn f() {
+            <UnknownTypeShouldBeIgnored>::a();
+            content::shouldnt::matter();
+            unknown_macro!();
+            //~^ ERROR cannot find macro `unknown_macro` in this scope
+
+            /// This is documentation for a macro
+            macro_rules! can_define_macros_here_too {
+                () => {
+                    this::content::should::also::be::ignored()
+                }
+            }
+            can_define_macros_here_too!();
+
+            /// This also is documented.
+            pub fn doubly_nested(c: UnknownType) {
+            //~^ ERROR cannot find type `UnknownType` in this scope
+            }
+        }
+    }
+}