Simplify static_assert_sizes.

[nnethercote]

We want to run them on all 64-bit platforms.

r? @ghost

[rustbot]

Some changes occurred to the CTFE / Miri engine

cc @rust-lang/miri

This PR changes MIR

cc @oli-obk, @RalfJung, @JakobDegen, @davidtwco, @celinval, @vakaras

Some changes occurred to the CTFE / Miri engine

cc @rust-lang/miri

The Miri subtree was changed

cc @rust-lang/miri

Some changes occurred in src/librustdoc/clean/types.rs

cc @camelid

[nnethercote]

@bors try

[bors]

⌛ Trying commit 54f8f52 with merge 63f3962...

[Noratrieb]

i don't think the try build will be useful as it only runs x86-64 linux, but now I can't approve it :D
r=me after the try build is over

[nnethercote]

So should we just mark as a non-rollup, let it attempt the merge, and see if anything fails then?

[bors]

☀️ Try build successful - checks-actions
Build commit: 63f3962 (63f3962ab602ee3449789ca7509ab405a2421f3e)

[Noratrieb]

yeah, that's how we figure out what happens
@bors r+ rollup=iffy

[bors]

📌 Commit 54f8f52 has been approved by Nilstrieb

It is now in the queue for this repository.

[bors]

⌛ Testing commit 54f8f52 with merge 0e3de81...

[bors]

💔 Test failed - checks-actions

[saethlin]

The problem here is the size difference of PathBuf on Windows, because internally it has an extra bool.

It would be neat to bit-pack this away:

rust/library/std/src/sys_common/wtf8.rs

Lines 136 to 146 in becebb3

	pub struct Wtf8Buf {
	bytes: Vec<u8>,
	/// Do we know that `bytes` holds a valid UTF-8 encoding? We can easily
	/// know this if we're constructed from a `String` or `&str`.
	///
	/// It is possible for `bytes` to have valid UTF-8 without this being
	/// set, such as when we're concatenating `&Wtf8`'s and surrogates become
	/// paired, as we don't bother to rescan the entire string.
	is_known_utf8: bool,
	}

[nnethercote]

The problem here is the size difference of PathBuf on Windows, because internally it has an extra bool.

I have updated that assertion accordingly. Let's try again...

@bors r=Nilstrieb

[bors]

📌 Commit 0d97669 has been approved by Nilstrieb

It is now in the queue for this repository.

[bors]

⌛ Testing commit 0d97669 with merge c25473f...

[bors]

☀️ Test successful - checks-actions
Approved by: Nilstrieb
Pushing c25473f to master...

[rust-timer]

Finished benchmarking commit (c25473f): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	2.3%	[2.3%, 2.3%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	2.2%	[2.2%, 2.2%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 678.014s -> 676.875s (-0.17%)
Artifact size: 315.34 MiB -> 315.38 MiB (0.01%)