Component/s: LLDB for Swift
Apple Swift version 4.0.1 (swiftlang-900.0.66 clang-900.0.37)
If you launch Swift on the command line and give it the following code:
Then the output you get is as follows:
The "4300275808" is clearly wrong. If you change the code to be [TestStruct] rather than [Testable] then the problem goes away.