error: macro expansion ignores token `,` and any following
  --> $DIR/macro-incomplete-parse.rs:5:9
   |
LL |         ,
   |         ^
...
LL | ignored_item!();
   | ---------------- caused by the macro expansion here
   |
   = note: the usage of `ignored_item!` is likely invalid in item context

error: expected one of `.`, `;`, `?`, `}`, or an operator, found `,`
  --> $DIR/macro-incomplete-parse.rs:10:14
   |
LL |     () => ( 1,
   |              ^ expected one of `.`, `;`, `?`, `}`, or an operator
...
LL |     ignored_expr!();
   |     ---------------- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: macro expansion ignores token `,` and any following
  --> $DIR/macro-incomplete-parse.rs:16:14
   |
LL |     () => ( 1, 2 )
   |              ^
...
LL |         ignored_pat!() => (),
   |         -------------- caused by the macro expansion here
   |
   = note: the usage of `ignored_pat!` is likely invalid in pattern context

error: aborting due to 3 previous errors