)]}'
{
  "commit": "52d6477a42d6f8a1d39742747c83dfcf2b59f01a",
  "tree": "5ae032546848aaf6043d1eab032b9c6225173e6e",
  "parents": [
    "46ca461b7ee465c122c5122c8044ef11ec2298bc"
  ],
  "author": {
    "name": "Alex Stewart",
    "email": "alexs.mac@gmail.com",
    "time": "Fri Nov 01 19:55:10 2019 +0000"
  },
  "committer": {
    "name": "Alex Stewart",
    "email": "alexs.mac@gmail.com",
    "time": "Fri Nov 01 20:11:25 2019 +0000"
  },
  "message": "Detect and disable -fstack-check on macOS 10.15 with Xcode 11\n\n- On macOS 10.15 and Xcode 11 -fstack-check is enabled by default. This\n  breaks SIMD alignment (and other alignment) as detailed here:\n  https://forums.developer.apple.com/thread/121887 resulting in random\n  segfaults from within Eigen.\n- The underlying problem also exists with earlier OS versions running\n  Xcode 11 if -fstack-check is explicitly enabled.\n- This CL explicitly disables -fstack-check on affected versions of\n  macOS 10.15 and Xcode 11.\n\nChange-Id: I74d964281c360710d5fb722ac59e6930b0fdcc41\n",
  "tree_diff": [
    {
      "type": "add",
      "old_id": "0000000000000000000000000000000000000000",
      "old_mode": 0,
      "old_path": "/dev/null",
      "new_id": "d5384d228281336cd60cff75f287c2fd088454f9",
      "new_mode": 33188,
      "new_path": "cmake/DetectSIMDHostileStackCheckMacOSXcodePairing.cmake"
    },
    {
      "type": "modify",
      "old_id": "01c23ca474bbbbe77f314376bb3478a83e1a50fc",
      "old_mode": 33188,
      "old_path": "internal/ceres/CMakeLists.txt",
      "new_id": "63e8540c5a410b5f34f1f04ebf949d7373b7cc35",
      "new_mode": 33188,
      "new_path": "internal/ceres/CMakeLists.txt"
    }
  ]
}