)]}'
{
  "commit": "52de0c739d2f066ea06fa9a886bc8fcc9fa079c6",
  "tree": "f3b2efc170e43b8eb526a34d9c110da826e23094",
  "parents": [
    "bfa3b88ea1c80a4f1f860fad4ab344d8fc28c868"
  ],
  "author": {
    "name": "Jo",
    "email": "46752250+georgesittas@users.noreply.github.com",
    "time": "Wed Jun 03 19:32:08 2026 +0300"
  },
  "committer": {
    "name": "GitHub",
    "email": "noreply@github.com",
    "time": "Wed Jun 03 18:32:08 2026 +0200"
  },
  "message": "[mypyc] Preserve inherited attribute defaults under separate\u003dTrue (#21547)\n\nFixes #21542\n\nUnder `separate\u003dTrue`, when a subclass is recompiled while its parent is\nloaded from mypy\u0027s incremental cache, parent default-attribute\nassignments are silently dropped from the subclass\u0027s\n`__mypyc_defaults_setup`. The first read of an inherited default-attr\nthen raises:\n\n```\n    AttributeError: attribute \u0027\u003cname\u003e\u0027 of \u0027\u003cParent\u003e\u0027 undefined\n```\n\n`find_attr_initializers` walks `cdef.info.mro` and reads\n`info.defn.defs.body` for `AssignmentStmt`s. `ClassDef.serialize`\n(mypy/nodes.py) does not serialize `defs`, so a cache-loaded parent has\n`defs \u003d Block([])`; the MRO walk collects no parent assignments and the\nsubclass\u0027s emitted setup leaves inherited slots in the\nundefined-sentinel state.\n\nThis PR implements the fix discussed in the linked issue.",
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