llvm/clang build issues

My AVG antivirus is picking up infections from these files (see the attached screenshot) while configuring/building llvm/clang. I realize they must be false positives but I find this fairly bizarre. It's never happened before. I'm being plagued with difficulties in building. Can anyone tell me why AVG might suddenly decide to flag these files?

Regards,

Kim

Not sure what would have changed, but these are part of cmake. I suspect that the compiler (CL in this case) is simply creating code that looks somewhat similar to one of AVG's patterns.

Apparently false-positives with these patterns aren't strange: https://support.avg.com/answers?id=906b0000000DXuqAAG