)]}'
{
  "commit": "e584174c13ac6825c9675a3a8b767d00102f1c8d",
  "tree": "6bfba1b9668e0a681ce2feb38d52677a3c23c8c0",
  "parents": [
    "a5e753582716355a0f71181cf4003babf227568e"
  ],
  "author": {
    "name": "Emilio Cobos Álvarez",
    "email": "emilio@crisal.io",
    "time": "Tue Oct 27 09:39:59 2026 +0000"
  },
  "committer": {
    "name": "Emilio Cobos Álvarez",
    "email": "emilio@crisal.io",
    "time": "Tue Oct 27 09:58:03 2026 +0000"
  },
  "message": "comp: Prevent recursive layout computation with template unions.\n\nMore minimal version of #3419 which avoids the crash even though it\ndoesn\u0027t get the right layout (we\u0027d need to enforce rust unions for\nthese).\n\nIn llvm/llvm-project#185449, LLVM\u0027s libc++ changed a header to use a\nrecursive self-referential type, which looks approximately like:\n\n```\ntemplate \u003cclass A0, class... As\u003e union RUnion { A0 arg; RUnion\u003cAs...\u003e u; };\ntemplate \u003cclass A\u003e union RUnion\u003cA\u003e { A arg; };\nstruct Wrap { RUnion\u003cint, float\u003e u; };\n```\n\nUninstantiated union templates don\u0027t have a meaningful layout anyway, so\nreturn `None` from `CompInfo::layout` for them.\n\nCloses #3397\n",
  "tree_diff": [
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