Running rust code outside of the runtime

[auroranockert]

Passing a Rust "extern fn" to a foreign API that creates its own threads doesn't work right now, the error is as below.

Assertion failed: (task && "Couldn't get the task from TLS!"), function get_task_tls, file /Users/Jens/Code/Git/rust/src/rt/rust_sched_loop.h, line 168.

There should be some annotation that you could add to your "extern fn" that would cause the compiler to emit only non-runtime dependent code and/or warn if you use features that depend on the runtime.

[auroranockert]

I tried these patches, and it makes my Grand Central Dispatch wrapper magically work*.

*work means that it seems to give the right result, I assume that there are a lot of implicit dangers of running Rust code outside of a task &c. &c.

[bstrie]

@jensnockert Is there anything left to do for this? If so, can you provide a test case?

[auroranockert]

I think it is finished, I'll make a more specific bug if I run into similar issues.