{
  "$type": "site.standard.document",
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  "path": "/t/mutation-creation-of-hir/24214#post_10",
  "publishedAt": "2026-05-04T21:31:23.000Z",
  "site": "https://internals.rust-lang.org",
  "textContent": "In rustc, spans are the only way, reliable or not.",
  "title": "Mutation/Creation of HIR"
}