Handle wildcard pointers in SB
This uses an permissive `Unknown` implementation, where a wildcard pointer (and any SRW derived from a wildcard pointer) can access any previously-exposed SB tag. This is missing any meaningful test-cases, and all of the edge-cases have not yet been worked through.
I think there's also some bugs here with differing Unknowns in different ranges and having things behave really weirdly too, alongside some issues with retagging to `SRO` or `Unique`.
Update measureme to the latest version
The major version number is different due to changes to the on-disk recording format but the core API is the same and miri continues to build on the latest version.
make rustfmt mandatory and used pinned toolchain
Looks like this is what most people prefer/expect, and using a pinned toolchain for formatting avoids some (rare and so far mostly hypothetical) formatting inconsistency issues.
Format tests with rustfmt (288-299 of 299)
Extracted from #2097.
I'll make a separate PR to enable checking the `tests` directory's formatting in CI. I'll need to rebase that after both this and #2254 have landed, and if any new non-rustfmt-formatted files appear in the meantime, we can include formatting those in the same PR that enables the CI.
Format tests with rustfmt (225-275 of 300)
Extracted from #2097.
These cases all involve a line comment at the end of a block that rustfmt has chosen to wrap.
```diff
- unsafe { (*ptr).set(20); } //~ ERROR does not exist in the borrow stack
+ unsafe {
+ (*ptr).set(20);
+ } //~ ERROR does not exist in the borrow stack
```
I have moved all of those comments back onto the same line as the content of the block instead, as was indicated being `@RalfJung's` preference in https://github.com/rust-lang/miri/pull/2097#discussion_r862436672.
```diff
+ unsafe {
+ (*ptr).set(20); //~ ERROR does not exist in the borrow stack
+ }
```
Format tests with rustfmt (276-287 of 299)
Extracted from #2097.
This is one half of the last 24 files (left for last because they require more unique attention than the first 275 "easy" files).
I'll comment below to call attention to cases where I exercised my own judgement in how to format the test.
https://github.com/rust-lang/rustfmt/issues/3255 is especially annoying: rustfmt does not like `…( //` and `…{ //`.
