Christian Blichmann afa232cc17 Clang generator: Remember "seen" types when collecting related types
This change includes a small refactoring to remember which types the generator
has already seen during header generations. Otherwise we may loop indefinitely
on certain complex types. One such type is `std::FILE` in Clang's libc++.

PiperOrigin-RevId: 335589238
Change-Id: I5bbe03b6c7fc89c743163f5534075d7912ed4e58
2020-10-06 01:04:49 -07:00
..