Sedenion

Hi, could you please share some more details regarding the reproduction? We received a crash dump from a customer showing the exact same call stack, but I failed to reproduce...

@myoung301 @vlserov I can confirm that the example posted above crashes both with oneTBB and mimalloc **if OneDrive is syncing the Desktop**. By that I mean OneDrive's option to backup...

@ChrisGuzak Am I interpreting your post correctly that the shell32.dll team at Microsoft is now aware of the issue? Otherwise, what does your link point to?

I also noticed this slow down. I do not think that it is necessarily or exclusively related to preprocessor macros such as `#ifdef`. I have a cpp file with ~13000...

I did a bit of profiling myself. From what I could understand: * I noticed that even without any preprocessor directives in the source code, using anything but `QualifierAlignment: Leave`...

I did some more digging and I think I understand the problem better and came up with a potential patch. My previous analysis was not complete. In `clang::format::internal::reformat()` the code...

I just submitted a fix for review: https://reviews.llvm.org/D153228