Hacker News new | ask | show | jobs
by vlovich123 838 days ago
I don't see where those methods are getting called from a Unix signal handler but the code is complex enough that it's easy to miss, especially perusing through github instead of vscode.

AFAICT those methods are called from `guard::current`. In turn, `guard::current` is used to initialize TLS data when a thread is spawned before a signal is generated (& right after the signal handler is installed): https://github.com/rust-lang/rust/blob/26907374b9478d84d766a...

It doesn't look like there's any UB behavior being relied upon but I could very easily be misreading. If I missed it, please give me some more pointers cause this should be a github issue if it's the case - calling non async-safe methods from a signal handler typically can result in a deadlock which is no bueno.