Don't give APITs names with macro expansion placeholder fragments in it

tests/crashes/140333.rs

@@ -1,9 +0,0 @@
-//@ known-bug: #140333
-fn a() -> impl b<
-    [c; {
-        struct d {
-            #[a]
-            bar: e,
-        }
-    }],
->;

tests/ui/impl-trait/name-mentioning-macro.rs

@@ -0,0 +1,12 @@
+trait Foo<T> {}
+
+macro_rules! bar {
+    () => { () }
+}
+
+fn foo(x: impl Foo<bar!()>) {
+    let () = x;
+    //~^ ERROR mismatched types
+}
+
+fn main() {}

tests/ui/impl-trait/name-mentioning-macro.stderr

@@ -0,0 +1,16 @@
+error[E0308]: mismatched types
+  --> $DIR/name-mentioning-macro.rs:8:9
+   |
+LL | fn foo(x: impl Foo<bar!()>) {
+   |           ---------------- expected this type parameter
+LL |     let () = x;
+   |         ^^   - this expression has type `impl Foo<bar!()>`
+   |         |
+   |         expected type parameter `impl Foo<bar!()>`, found `()`
+   |
+   = note: expected type parameter `impl Foo<bar!()>`
+                   found unit type `()`
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0308`.

tests/ui/impl-trait/struct-field-fragment-in-name.rs

@@ -0,0 +1,16 @@
+//@ check-pass
+
+trait Trait<T> {}
+
+fn a(_: impl Trait<
+    [(); {
+        struct D {
+            #[rustfmt::skip]
+            bar: (),
+        }
+        0
+    }],
+>) {
+}
+
+fn main() {}