Between all of the "banter" (which is from more than just the anti-AI folks) you may not have caught I was one of the first 10 comments on that very issue 3 days ago
https://github.com/anthropics/claudes-c-compiler/issues/1#is.... Not to imply there are no issues or it's a good compiler, the README.md says as much, but I found in practice you can get to CCC compiling a version of the Linux kernel in the amount of time it takes to go through that thread about hello world.
Of course - you do you, not everyone is the same. If that kind of discussion piques your interest or feels easier to consume then there is plenty more to be found there. At least that guy's bot spamming 75% of the issues board has closed them all now (though the comments are still there in responses other issues) so it's a little cleaner.
N.b. for anyone seeing "root@main" in the above link - that's just an ephemeral rootless container instance on a dev VM host from a template named "main" I spun up to mess with CCC. I.e. "don't let the prompt imply I recommend using actual root on your actual main box to do much of anything, let alone run random projects from GitHub" :).