Can you please attach the file ROOT_cx.hh? Which version of ROOT were you using before the upgrade? Also, can you provide the previous and new execution times?
Can you please create a GitHub issue so that can investigate this further. Please, attach the provided file and any other files that are required to reproduce the problem.
Can you also please provide the time it took to parse the header (before and after the update), if you have that information? Thanks.
Thanks, @cxwx1. We have classified the issue accordingly.
You didn’t mentioned before that you also made other software changes in your environment. Anyway, we will try to reproduce the issue with the provided information.