error: incorrect function inside `extern` block
  --> $DIR/issue-95829.rs:4:14
   |
LL |   extern {
   |   ------ `extern` blocks define existing foreign functions and functions inside of them cannot have a body
LL |       async fn L() {
   |  ______________^___-
   | |              |
   | |              cannot have a body
LL | |
LL | |         async fn M() {}
LL | |     }
   | |_____- help: remove the invalid body: `;`
   |
   = help: you might have meant to write a function accessible through FFI, which can be done by writing `extern fn` outside of the `extern` block
   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/issue-95829.rs:4:5
   |
LL | extern {
   | ------ in this `extern` block
LL |     async fn L() {
   |     ^^^^^ help: remove this qualifier

error: aborting due to 2 previous errors