[llvm] [LLVM] [Support] Query the terminal width using the termios API (PR #143514)

[via llvm-commits]

Sirraide wrote:

> LLVM Buildbot has detected a new failure on builder `openmp-s390x-linux` running on `systemz-1` while building `llvm` at step 6 "test-openmp".
> 
> Full details are available at: https://lab.llvm.org/buildbot/#/builders/88/builds/12933
> 
> Here is the relevant piece of the build log for the reference

Looks like one of the tests is crashing w/ a weird exit code; not sure if that’s related to this but if it is we should probably just disable the `ioctl()` call for this platform—I have no idea what the preprocessor macro for it is though.

https://github.com/llvm/llvm-project/pull/143514