Better template for #[repr] attributes

[jdonszelmann]

r? @ghost

NOTE: blocked by #138165

[rust-log-analyzer]

The job mingw-check-2 failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

[RUSTC-TIMING] cc test:false 0.734
error[E0061]: this function takes 4 arguments but 3 arguments were supplied
   --> compiler/rustc_attr_parsing/src/attributes/stability.rs:372:36
    |
372 |             Some(sym::old_name) => insert_value_into_option_or_error(cx, &param, &mut old_name)?,
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------------------------- argument #4 of type `rustc_span::Ident` is missing
    |
note: function defined here
   --> compiler/rustc_attr_parsing/src/attributes/stability.rs:216:4
    |
216 | fn insert_value_into_option_or_error<S: Stage>(
    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
220 |     name: Ident,
    |     -----------
help: provide the argument
    |
372 |             Some(sym::old_name) => insert_value_into_option_or_error(cx, &param, &mut old_name, /* rustc_span::Ident */)?,
    |                                                                                               +++++++++++++++++++++++++

For more information about this error, try `rustc --explain E0061`.
[RUSTC-TIMING] rustc_attr_parsing test:false 0.570
error: could not compile `rustc_attr_parsing` (lib) due to 1 previous error