erichkeane wrote: As a quick note, the best way to check serialization/deserialization is a PCH /restore test. I did a bunch in `SemaOpenACC` that you can use as an example (see a bunch ending with `-ast` in the name). Basically, you just do the right command-line incantation, plus a #ifdef around the whole file. Write your code that has the correct AST nodes in place, then it does a 'write to a PCH file', then does a 'load from a PCH file'. You then use `CHECK` lines via `FileCheck` to make sure it is the same before and after the serialization.
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