Incorrect macro expansion in rustdoc source view

[theemathas]

At https://doc.rust-lang.org/nightly/nightly-rustc/src/rustc_const_eval/const_eval/machine.rs.html#396, there's a button to expand the macro to see the source code of what the macro expands to. The macro expansion is incorrect. See screenshots below.

For reference, the macro is defined at https://doc.rust-lang.org/nightly/nightly-rustc/src/rustc_const_eval/interpret/machine.rs.html#627-748 (see screenshot below).

The problem was found to exist on the version of the page: 1.97.0-nightly (67bcaa9c4 2026-05-01)

[camelid]

cc @GuillaumeGomez

[GuillaumeGomez]

Here's a minimized version of the issue:

#![feature(decl_macro)]

pub macro compile_time_machine() {
    type Provenance = bool;
    fn unwind_terminate() {}
}

trait CompileTimeMachine {
    type Provenance;
    fn unwind_terminate();
}

impl CompileTimeMachine for u32 {
    compile_time_machine!();
}

I think half of the issue is because of the decl macro itself. Investigating.