This is required so that assigning to these locals doesn't clobber
the content of the box.
(A possible optimization would be to only do this copying for
locals that actually are assigned to.)
The logic for how the "returns" constraint was handled was always
dodgy, for reasons explained in the comments I added to
auxiliary::fn_info in this commit. Fixed it by adding distinct
"returns" and "diverges" constraints for each function, which
are both handled positively (that is: for a ! function, the
"diverges" constraint must be true on every exit path; for
any other function, the "returns" constraint must be true
on every exit path).
Closes#779
Still working on getting backwarding to play nicely with self and
overriding. Currently can't fix issue #702 without breaking how self
and overriding interact.
Takes a lot of workarounds. The biggest problem is that boxes still don't seem
to be moved across channels and bad things happen when the receiver destroys
them. So there's all sorts of defensive cloning and scoping going on here to
make the box lifetimes come out right.
that absolutely will not succeed with a large default stack. This
should be removed once we have stack grown working.
Also updated word-count to succeed under the new test framework.
Tasks are spawned on a random thread. Currently they stay there, but
we should add task migration and load balancing in the future. This
should drammatically improve our task performance benchmarks.
This was previously disallowed by the typechecker and not properly handled
in trans. I removed the typechecker check (replacing it with a simpler
check that spawned functions don't have type params) and fixed trans.
Closes#756.
This commit just disables the check. All of the real work was in previous
commits that moved the target function into the bindings part of the closure
that is tracked by the tydesc.
Closes#754.
In theory. There's still something leaking but I hope it's no longer due to
the test runner doing unsafe things.
This is a pretty nasty patch, working around limitations in the type and task
systems, and it makes the std::test API a little uglier.