error: `$ty:ty` is followed by `<`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:14:13
   |
LL |     ($ty:ty <) => (); //~ ERROR `$ty:ty` is followed by `<`, which is not allowed for `ty`
   |             ^

error: `$ty:ty` is followed by `<`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:15:13
   |
LL |     ($ty:ty < foo ,) => (); //~ ERROR `$ty:ty` is followed by `<`, which is not allowed for `ty`
   |             ^

error: `$pa:pat` is followed by `>`, which is not allowed for `pat` fragments
  --> $DIR/macro-input-future-proofing.rs:21:14
   |
LL |     ($pa:pat >) => (); //~ ERROR `$pa:pat` is followed by `>`, which is not allowed for `pat`
   |              ^

error: `$pa:pat` is followed by `$pb:pat`, which is not allowed for `pat` fragments
  --> $DIR/macro-input-future-proofing.rs:23:14
   |
LL |     ($pa:pat $pb:pat $ty:ty ,) => ();
   |              ^^^^^^^

error: `$pb:pat` is followed by `$ty:ty`, which is not allowed for `pat` fragments
  --> $DIR/macro-input-future-proofing.rs:23:22
   |
LL |     ($pa:pat $pb:pat $ty:ty ,) => ();
   |                      ^^^^^^

error: `$ty:ty` is followed by `-`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:26:17
   |
LL |     ($($ty:ty)* -) => (); //~ ERROR `$ty:ty` is followed by `-`
   |                 ^

error: `$b:ty` is followed by `-`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:27:23
   |
LL |     ($($a:ty, $b:ty)* -) => (); //~ ERROR `$b:ty` is followed by `-`
   |                       ^

error: `$ty:ty` is followed by `-`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:28:7
   |
LL |     ($($ty:ty)-+) => (); //~ ERROR `$ty:ty` is followed by `-`, which is not allowed for `ty`
   |       ^^^^^^^^

error: `$a:expr` is followed by `$b:tt`, which is not allowed for `expr` fragments
  --> $DIR/macro-input-future-proofing.rs:29:21
   |
LL |     ( $($a:expr)* $($b:tt)* ) => { };
   |                     ^^^^^

error: aborting due to 9 previous errors