{
  "tu_namespace": {
    "kind": "CompilationUnit",
    "name": "invalid-entity-id-value.cpp"
  },
  "id_table": [
    {
      "id": 0,
      "name": {
        "suffix": "",
        "usr": "c:@F@foo#"
      }
    }
  ],
  "linkage_table": [
    {
      "id": 0,
      "linkage": {
        "type": "External"
      }
    }
  ],
  "data": [
    {
      "summary_name": "Analysis1",
      "summary_data": [
        {
          "entity_id": 0,
          "entity_summary": {
            "ref": {
              "@": "not-a-number"
            }
          }
        }
      ]
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}