Fail to build with glibc 2.42

[sergiodj]

Hello,

This is a spinoff of swiftlang/swift#83715.

This project is failing to build from source using glibc 2.42, due to llvm#137321. The issue has been fixed upstream by:

llvm/llvm-project@59978b2
llvm/llvm-project@c99b1bc

I don't know how swift's release process works, but it would be great if these fixes could be backported to previous versions of your fork of llvm-project.

Thanks.