dynamic_cast error 2: One or more of the following type_info's has hidden visibility...

[masaori335]

The below message shows up when I run traffic_server on lldb and request to /_stats for stats-over-http plugin.

2021-07-21 14:24:24.026916+0900 traffic_server[79577:4784805] dynamic_cast error 2: One or more of the following type_info's has hidden visibility or is defined in more than one translation unit. They should all have public visibility. 18UnixNetVConnection, 8PluginVC, 17SSLNetVConnection.

• Conditions: ATS master (cfe034d), llvm 12.0.1, maxOS 11.4
• git bisect says f839a74 is the first bad commit
• It looks like this message comes from libc++abi
  https://github.com/llvm-mirror/libcxxabi/blob/ce3db128f9e4d6d19d1cdbe39bb45fcc64a5adb0/src/private_typeinfo.cpp#L666-L670

[github-actions]

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