Use ui_test from crates.io instead of having it in-tree
I have moved a copy of the `ui_test` crate into [a separate repo](https://github.com/oli-obk/ui_test) to facilitate the further non-miri development of it. I will keep syncing until we have reached a point where we don't touch it anymore for miri. At that point we can remove the in-tree version and do further development out of tree.
Run `pass` tests without building dependencies first
fixes https://github.com/rust-lang/miri/issues/2442
One thing that I'm wondering is if we should do away with running each folder individually and make `ui_test` support running all tests in parallel (so building deps becomes a thread, and all tests needing deps are blocked on it)
move vector_clock and sync into concurrency & make vector_clock private
Closes https://github.com/rust-lang/miri/issues/2199
The thread.rs didn't have to be moved to build.
If it makes more sense to move the thread.rs as well, please let me know. I can move it as well.
add ./miri cargo for RA to invoke
RA expects a check command to check *individual workspaces*, whereas `./miri` is designed to check/build/test all parts of Miri. So add a new `./miri cargo` that performs just a single cargo invocation, but with the right env vars so that the build cache can be shared with `./miri check`.
Improve information sharing across SB diagnostics
Previous Stacked Borrows diagnostics were missing a lot of information about the state of the interpreter, and it was difficult to add additional state because it was threaded through all the intervening function signatures.
This change factors a lot of the arguments which used to be passed individually to many stacked borrows functions into a single `DiagnosticCx`, which is built in `Stacks::for_each`, and since it wraps a handle to `AllocHistory`, we can now handle more nuanced things like heterogeneous borrow of `!Freeze` types.
Previous Stacked Borrows diagnostics were missing a lot of information
about the state of the interpreter, and it was difficult to add
additional state because it was threaded through all the intervening
function signatures.
This change factors a lot of the arguments which used to be passed
individually to many stacked borrows functions into a single
`DiagnosticCx`, which is built in `Stacks::for_each`, and since it
wraps a handle to `AllocHistory`, we can now handle more nuanced
things like heterogeneous borrow of `!Freeze` types.
add very basic Android support
This is just enough to print to stdout. I won't push this any further, but having these basics should hopefully make it easier for others to do so.
Also slightly improve threading support on FreeBSD while we are at it.
Partially based on https://github.com/rust-lang/miri/pull/2011.
Fixes https://github.com/rust-lang/miri/issues/2010.
Breaking posix_memalign precondition is not UB
The `size==0` test here might be overtesting, but I figured might as well test it and leave a comment saying it is fine to remove it if the implementation changes.
Fixes#2099
