[libc-commits] [libc] [libc] Make hdrgen deduce header type lists from function signatures (PR #127251)

[Joseph Huber via libc-commits]

jhuber6 wrote:

The documentation states that we require Python 3.8, which is what the buildbot uses https://libc.llvm.org/dev/header_generation.html#instructions.
The `:|` feature was only added in 3.9 https://docs.python.org/3/whatsnew/3.9.html#dictionary-merge-update-operators. This should be reverted and then made to be compatible with 3.8 or update the build instructions and the bots.

https://github.com/llvm/llvm-project/pull/127251