warning: dereferencing a reference to an uninhabited type is undefined behavior
        --> src/gen/visit.rs:2057:11
         |
    2057 |     match *node {}
         |           ^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninhabited_references
         = note: `-W clippy::uninhabited-references` implied by `-W clippy::all`
         = help: to override `-W clippy::all` add `#[allow(clippy::uninhabited_references)]`

    warning: dereferencing a reference to an uninhabited type is undefined behavior
        --> src/gen/visit_mut.rs:2060:11
         |
    2060 |     match *node {}
         |           ^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninhabited_references

    warning: dereferencing a reference to an uninhabited type is undefined behavior
        --> src/gen/clone.rs:1038:15
         |
    1038 |         match *self {}
         |               ^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninhabited_references

    warning: dereferencing a reference to an uninhabited type is undefined behavior
        --> src/gen/debug.rs:1507:15
         |
    1507 |         match *self {}
         |               ^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninhabited_references

    warning: dereferencing a reference to an uninhabited type is undefined behavior
        --> src/gen/eq.rs:1021:15
         |
    1021 |         match *self {}
         |               ^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninhabited_references

    warning: dereferencing a reference to an uninhabited type is undefined behavior
        --> src/gen/hash.rs:1357:15
         |
    1357 |         match *self {}
         |               ^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninhabited_references

    warning: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let`
      --> tests/common/parse.rs:16:34
       |
    16 |       match panic::catch_unwind(|| {
       |  __________________________________^
    17 | |         let locale_resources = rustc_driver::DEFAULT_LOCALE_RESOURCES.to_vec();
    18 | |         let file_path_mapping = FilePathMapping::empty();
    19 | |         let sess = ParseSess::new(locale_resources, file_path_mapping);
    ...  |
    32 | |         }
    33 | |     }) {
       | |_____^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blocks_in_conditions
       = note: `-W clippy::blocks-in-conditions` implied by `-W clippy::all`
       = help: to override `-W clippy::all` add `#[allow(clippy::blocks_in_conditions)]`

    warning: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let`
       --> tests/test_round_trip.rs:90:50
        |
    90  |           let equal = match panic::catch_unwind(|| {
        |  __________________________________________________^
    91  | |             let locale_resources = rustc_driver::DEFAULT_LOCALE_RESOURCES.to_vec();
    92  | |             let file_path_mapping = FilePathMapping::empty();
    93  | |             let sess = ParseSess::new(locale_resources, file_path_mapping);
    ...   |
    114 | |             Ok((before, after))
    115 | |         }) {
        | |_________^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blocks_in_conditions

Add a real-world example for ParseBuffer::cursor