error: unexpected closing delimiter: `)`
  --> $DIR/invalid-punct-ident-4.rs:7:1
   |
LL | lexer_failure!();
   | ^^^^^^^^^^^^^^^^ unexpected closing delimiter
   |
   = note: this error originates in the macro `lexer_failure` (in Nightly builds, run with -Z macro-backtrace for more info)

error: proc macro panicked
  --> $DIR/invalid-punct-ident-4.rs:7:1
   |
LL | lexer_failure!();
   | ^^^^^^^^^^^^^^^^

error[E0308]: mismatched types
  --> $DIR/invalid-punct-ident-4.rs:12:33
   |
LL |     let _recovery_witness: () = 0;
   |                            --   ^ expected `()`, found integer
   |                            |
   |                            expected due to this

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0308`.