Adjust for supporting more implicit ptr-to-int transmutation

[RalfJung]

This is the Miri side of rust-lang/rust#101101.
Fixes #2456.

[RalfJung]

Hm, some test is taking forever and ui_test doesn't have any kind of timeout...

[RalfJung]

It's the pass/vec.rs test but I don't know why it times out.

Let's see if a slightly older rustc still works.
@bors r+

[bors]

📌 Commit d936f3a has been approved by RalfJung

It is now in the queue for this repository.

[bors]

⌛ Testing commit d936f3a with merge 872bea4...

[RalfJung]

Yeah this times out still...
@bors r- retry

[RalfJung]

Blocked on rust-lang/rust#101237.

[RalfJung]

@bors r+

[bors]

📌 Commit 4383da8 has been approved by RalfJung

It is now in the queue for this repository.

[bors]

🔒 Merge conflict

This pull request and the master branch diverged in a way that cannot be automatically merged. Please rebase on top of the latest master branch, and let the reviewer approve again.

How do I rebase?

Assuming self is your fork and upstream is this repository, you can resolve the conflict following these steps:

1. git checkout read-pointer-as-bytes (switch to your branch)
2. git fetch upstream master (retrieve the latest master)
3. git rebase upstream/master -p (rebase on top of it)
4. Follow the on-screen instruction to resolve conflicts (check git status if you got lost).
5. git push self read-pointer-as-bytes --force-with-lease (update this PR)

You may also read Git Rebasing to Resolve Conflicts by Drew Blessing for a short tutorial.

Please avoid the "Resolve conflicts" button on GitHub. It uses git merge instead of git rebase which makes the PR commit history more difficult to read.

Sometimes step 4 will complete without asking for resolution. This is usually due to difference between how Cargo.lock conflict is handled during merge and rebase. This is normal, and you should still perform step 5 to update this PR.

Error message

Removing tests/pass/transmute_fat.rs
Auto-merging tests/fail/validity/uninit_raw_ptr.stderr
Auto-merging tests/fail/validity/uninit_integer.stderr
Auto-merging tests/fail/validity/uninit_float.stderr
CONFLICT (modify/delete): tests/fail/validity/ptr_integer_array_transmute.stderr deleted in heads/homu-tmp and modified in HEAD. Version HEAD of tests/fail/validity/ptr_integer_array_transmute.stderr left in tree.
Removing tests/fail/validity/ptr_integer_array_transmute.rs
Auto-merging tests/fail/validity/invalid_fnptr_uninit.stderr
Auto-merging tests/fail/validity/invalid_char_uninit.stderr
Auto-merging tests/fail/validity/invalid_bool_uninit.stderr
CONFLICT (modify/delete): tests/fail/transmute_fat1.stderr deleted in heads/homu-tmp and modified in HEAD. Version HEAD of tests/fail/transmute_fat1.stderr left in tree.
Removing tests/fail/transmute_fat1.rs
Auto-merging tests/fail/reading_half_a_pointer.stderr
CONFLICT (content): Merge conflict in tests/fail/reading_half_a_pointer.stderr
Auto-merging tests/fail/intrinsics/raw_eq_on_ptr.stderr
CONFLICT (content): Merge conflict in tests/fail/intrinsics/raw_eq_on_ptr.stderr
Auto-merging src/machine.rs
Auto-merging src/diagnostics.rs
Automatic merge failed; fix conflicts and then commit the result.

[RalfJung]

Some of the changes here are due to rust-lang/rust#98919, but the conflicts made it too annoying to keep them in a separate commit...

@bors r+

[bors]

📌 Commit 0113f9e has been approved by RalfJung

It is now in the queue for this repository.

[bors]

⌛ Testing commit 0113f9e with merge 0da5f76...

[bors]

☀️ Test successful - checks-actions
Approved by: RalfJung
Pushing 0da5f76 to master...