[WalterBright]

How does it break the C Standard?

> how to deal with functions that may not terminate or take rather long to execute

Control-C, the same as when running any executable that shouldn't be taking that long. It doesn't solve the halting problem :-/

[UncleEntity]

So a single typo DDoSes the entire Red Hat buildbot fleet?

[kstenerud]

You set a timeout, like in any robust CI.