Remove `commit_if_ok` probe from NLL type relation
It was not really necessary to add the `commit_if_ok` in #100092 -- I added it to protect us against weird inference error messages due to recursive RPIT calls, but we are always on the error path when this happens anyways, and I can't come up with an example that makes this manifest.
Fixes#103599
r? `@oli-obk` since you reviewed #100092, feel free to re-roll.
🅱️📢 beta-nominating this since it's on beta (which forks in ~a week~ two days 😨) -- worst case we could revert the original PR on beta and land this on nightly, to give it some extra soak time...
Add Target Tier Policy notification.
This adds a notification posted to PRs when they add/modify a target spec.
This was hard-coded in highfive. I forgot to include this in https://github.com/rust-lang/rust/pull/103492.
ptr::eq: clarify that comparing dyn Trait is fragile
Also remove the dyn trait example from `ptr::eq` since those tests are not actually guaranteed to pass due to how unstable vtable comparison is.
Cc ``@rust-lang/libs-api``
Cc discussion following https://github.com/rust-lang/rust/pull/80505
Update cargo
5 commits in 071eeaf210708219a5a1b2c4728ca2f97df7f2ae..9210810d1fd7b51ae0439a0a363cc50e36963455 2022-10-22 01:17:55 +0000 to 2022-10-25 22:31:50 +0000
- Fix 410 gone response handling (rust-lang/cargo#11286)
- Fix inequality in "stale mtime" log messages (rust-lang/cargo#11281)
- doc(cargo-tree): mention it considering feature unification (rust-lang/cargo#11282)
- Improve the error message if `publish` is `false` or empty list (rust-lang/cargo#11280)
- Add test for deleted index entry (rust-lang/cargo#11278)
rustdoc: don't mark Box<T> as Iterator, Read, etc
Because Box<T> has pass-through implementations, rustdoc was giving it the "Notable Traits" treatment for Iterator, Read, Write, and Future, even when the type of T was unspecified.
Pin had the same problem, but just for Future.
Fixes#100320
Update books
## reference
4 commits in f6ed74f582bddcec73f753eafaab3749c4f7df61..4ea7c5def38ac81df33a9e48e5637a82a5ac404d
2022-10-08 02:43:26 -0700 to 2022-10-25 15:14:36 -0700
- Document Half Open Range Patterns + Improve Range Patterns in General (rust-lang/reference#1274)
- clarifying which row contains the example (rust-lang/reference#1287)
- Add `sym` operands for inline assembly (rust-lang/reference#1270)
- Add basic GATs reference information (rust-lang/reference#1265)
## book
141 commits in f1e5ad844d0c61738006cdef26227beeb136948e..aa5ee485bd6bd80d205da7c82fcdd776f92fdd51
2022-09-19 09:48:21 -0400 to 2022-10-20 16:49:55 -0400
- Remove Turkish translation
- Update chapter 4 from latest print edits
- Update chapter 3 from latest print edits
- Clarify division truncates toward zero. Fixesrust-lang/book#2856.
- Update chapter 2 from latest print edits
- Fix a problem with literal style ending
- Explain both kinds of format string arguments
- Update chapter 1 from latest print edits
- Snapshot consolidated appendices
- Fix ListNumber0, newlines after lists
- Don't match nodes without anything
- Handle listing numbers in appendices too
- Regenerate everything
- Fix chapter numbers in word doc so they're in the XML
- Number Table captions too
- Handle figures too
- Regenerate ch4
- Handle listing numbers
- Regenerate ch13
- Regenerate ch12
- Regenerate ch11
- Regenerate chapter 10
- Fix ListBullet0
- Handle ending of BoxCode better
- Regenerate chapter 9
- Regenerate ch8
- Make RunInHead consistent-ish
- Fix extra newline before boxes
- Fix Box RunIn Head/Para
- Fix newline after RunInHead/Para
- Regenerate ch7
- Fix QuotePara
- Fix ListPlain
- Regenerate ch6
- Fix BoxCode
- Regenerate chapter 5
- Fix GraphicSlug and CaptionLine
- Regenerate snapshot of chapter 4
- Fix boxes a bit
- Add a shellcheck ignore
- Handle BoxListBullet
- Handle superscript
- Regenerate ch3 from xml and fix tables
- Fix italics and whitespace interactions
- Fix italic preceding/following
- Fix preceding/following xpaths again
- Fix italics
- Fix code blocks
- Fix more last bullets in lists
- Fix box newlines
- Fix last bullet in a list
- Fix BoxType
- Fix notes
- Fix literals
- Add the no editing warning at the top when getting snapshots from docx
- Make the snapshot of the frontmatter nicer
- Updates to appendixes C, D, and E after copyedit checks
- Snapshots after copyedit checks of appendices a and b + recheck of 20
- Snapshot of appendices from copyedit
- Updated snapshot of the appendices
- Re-checks of chapter 19
- Re-checks of chapter 18
- Messy snapshot of chapter 20 after copyedit checks
- Snapshot of ch20 after copyedit
- Updated snapshot of chapter 20
- Messy snapshot of chapter 19 after copyedit checks
- Snapshot of ch19 after copyedit
- Updated snapshot of ch19
- Messy snapshot of ch 18 after copyedit review
- Snapshot of ch 18 after copyedit
- Update snapshot of ch18
- Messy snapshot of ch 17 after copyedit review
- Snapshot of ch17 copyedit
- Updated snapshot of ch17
- Messy snapshot of ch16 after copyedit
- Snapshot of ch16 copyedited
- Updated snapshot of ch16
- Messy snapshot of ch 15 after copyedit checks
- Re-review of earlier chapters
- Snapshot of ch15 copyedit
- Update snapshot of ch15
- Messy snapshots of other chapters with indentation fixed
- Messy snapshot of ch2 with indentation fixed
- Add unittests to the allowed words
- Messy snapshot of chapter 14 after checking copyedit
- Snapshot of chapter 14 after copyedit
- Update snapshot of ch14
- Regenerate manual output for chapter 14
- Messy snapshot of chapter 13 after copyedit check
- Updated snapshot of ch13 after copyedit
- Updated snapshot of ch13
- Messy snapshot of chapter 12 after copyedit checks
- Snapshot of chapter 12 copyedited
- Update snapshot for chapter 12
- Messy snapshot of chapter 11 after copyedit check
- Snapshot of chapter 11 copyedited
- Updated snapshot of chapter 11
- Messy snapshot of chapter 10 after copyedit check
- Snapshot of chapter 10 copyedit
- Updated snapshot of chapter 10
- Messy snapshot of ch9 after copyedit checks
- Snapshot of ch 9 copyedit
- Update snapshot of chapter 9
- Messy snapshot of chapter 8
- Update println style in ch8
- Snapshot of chapter 8 from copyedit
- Updated snapshot of chapter 8
- Rearrange my notes yet again
- Messy snapshot of ch7 after copyedit checks
- Snapshot of chapter 7 from copyedit, fix chapter 6 name
- Update snapshot of chapter 7
- Messy snapshot of chapter 6 after copyedit check
- Update snapshot of chapter 6
- Change my notes again
- Messy snapshot of chapter 5 after checking copyedit
- Snapshot of chapter 5 from copyedit
- Messy snapshot of chapter 4 after copyedit check
- Changing my notes again
- Snapshot of ch4 from nostarch
- Messy snapshot of chapter 3 after copyedit check, ch4 on start check
- Snapshot of ch3 from nostarch
- Updated snapshot of ch3
- reorder notes
- Messy snapshot of chapter 1 after copyedit check
- Snapshot of ch01 docx from nostarch
- Updated snapshot of chapter 1
- Messy snapshot of frontmatter docx
- Another snapshot to fix the crab pinchers description
- Messy snapshot of chapter 2 docx
- Get the latest snapshot of chapter 2
- Upgrade to rand 0.8.5
- Notes to self
- Update xsl and take snapshots from docx, such as they are
- Update instructions on docx -> md now that I've done it again
- Propagate frontmatter edits to src
- Updated snapshots extracted from frontmatter
- Support different styles in the docx
- Line wrap bio
- Frontmatter from word doc
- Edits to docx files for nostarch
- docx files from nostarch
## rust-by-example
6 commits in 5e7b296d6c345addbd748f242aae28c42555c015..03491f33375c5a2a1661c7fa4be671fe95ce1249
2022-10-05 08:24:45 -0300 to 2022-10-21 07:30:08 -0300
- fixrust-lang/rust-by-example#1628: the box pointer is on stack not on heap (rust-lang/rust-by-example#1629)
- fixrust-lang/rust-by-example#1608: out-of-bound indexing is a runtime error (not a compile-time error) (rust-lang/rust-by-example#1626
)
- Fix: Path internal representation and conversions (rust-lang/rust-by-example#1625)
- fix crate name in example (rust-lang/rust-by-example#1620)
- avoid reserved keyword try as crate name (rust-lang/rust-by-example#1619)
- Fix typo in iter_result.md (rust-lang/rust-by-example#1614)
## rustc-dev-guide
7 commits in 7518c3445dc02df0d196f5f84e568d633c5141fb..51a37ad19a15709d0601afbac6581f5aea6a45da
2022-10-08 12:29:47 +0200 to 2022-10-25 10:18:58 -0700
- Update `traits/resolution.md` (rust-lang/rustc-dev-guide#1494)
- Update diagnostics to flat fluent message paths
- Update rust-analyzer suggestions (rust-lang/rustc-dev-guide#1487)
- miri is no longer a submodule but a subtree. (rust-lang/rustc-dev-guide#1488)
- fix some links (rust-lang/rustc-dev-guide#1490)
- typo and grammar (rust-lang/rustc-dev-guide#1484)
- Add missing prerequisite for some Linux distros (rust-lang/rustc-dev-guide#1481)
Support excluding the generation of the standalone docs
For Ferrocene we need to exclude the generation of the standalone docs (which include the index page, which we want to replace with our own), but with the way bootstrap is currently implemented that proved not possible. This PR aims to support that.
The first problem is that the `doc::Standalone` step did two things: it generated the "standalone" documentation (which includes the index page and all the pages at the root of the documentation tree), but it also generated some files like `rust.css` and `version_info.html` that other step like `doc::TheBook` required. This meant generating the book required generating the index page, which made disabling the index page generation problematic.
The approach I took to fix the first problem is to split the step into `doc::Standalone` and `doc::SharedAssets`, with `doc::TheBook` now depending on `doc::SharedAssets`.
The second problem is that disabling the `doc::Standalone` proved to be tricky due to its path, `src/doc`. The path is accurate, as the source files for that step are `src/doc/*.md`. The problem is, bootstrap treats `--exclude` as a *suffix*, and so it also excluded the Cargo book whose source lives at `src/tools/cargo/src/doc`.
The approach I took to fix the second problem is to add the `standalone` path in addition to `src/doc`, so that you can pass `--exclude standalone`. I'm not fully happy with the solution, and the other idea I had was to just move the standalone docs source code to `src/doc/standalone`. I feel that second approach is cleaner, but also requires more changes and might require more consensus.
This PR is best reviewed commit-by-commit.
r? `@jyn514`
Improve miri_print_borrow_stacks
Per post-merge review on https://github.com/rust-lang/miri/pull/2322
* `miri_print_stacks` renamed to `miri_print_borrow_stacks`
* A bit more details in docs, clarified how unstable these functions are meant to be
* Print an `unknown_bottom` if one exists
Open question: Currently `miri_get_alloc_id` gets the expected `AllocId` for `Wildcard` pointers, but for pointers with no provenance, the function reports UB and halts the interpreter. That's definitely wrong. But what _should_ we do? Is it reasonable to check if the pointer has `None` provenance and try to get an `AllocId` for its address? That still leaves us with a failure path, which in this case might be best-handled as an ICE? I'm just not sure that changing the return type of `miri_get_alloc_id` to `Option` is a win because it complicates all normal uses of this.
Pinning tests for some `macro_rules!` errors discussed in the lang meeting
r? ``@nikomatsakis``
Mind just stamping these, since they were useful for the meeting discussion today?
Use a faster allocation size check in slice::from_raw_parts
I've been perusing through the codegen changes that result from turning on the standard library debug assertions. The previous check in here uses saturating arithmetic, which in my experience sometimes makes LLVM just fail to optimize things around the saturating operation.
Here is a demo of the codegen difference: https://godbolt.org/z/WMEqrjajW
Before:
```asm
example::len_check_old:
mov rax, rdi
mov ecx, 3
mul rcx
setno cl
test rax, rax
setns al
and al, cl
ret
example::len_check_old:
mov rax, rdi
mov ecx, 8
mul rcx
setno cl
test rax, rax
setns al
and al, cl
ret
```
After:
```asm
example::len_check_new:
movabs rax, 3074457345618258603
cmp rdi, rax
setb al
ret
example::len_check_new:
shr rdi, 60
sete al
ret
```
Running rustc-perf locally, this looks like up to a 4.5% improvement when `debug-assertions-std = true`.
Thanks ```@LegionMammal978``` (I think that's you?) for turning my idea into a much cleaner implementation.
r? ```@thomcc```
Diagnostic derives: allow specifying multiple alternative suggestions
This allows porting `span_suggestions()` to diagnostic structs.
Doesn't work for `multipart_suggestions()` because the rank would be reversed - the struct would specify multiple spans, each of which has multiple possible replacements, while `multipart_suggestions()` creates multiple possible replacements, each with multiple spans.
suggest type annotation for local statement initialed by ref expression
In a local statement with a type declaration, if a ref expression is used on the right side and not used on the left side, in addition to removing the `&` and `&mut` on the right side, we can add them on the left side alternatively
Fixes#102892
Add eval hack in `super_relate_consts` back
Partially reverts 01adb7e98d.
This extra eval call *still* needs to happen, for example, in `normalize_param_env_or_error` when a param-env predicate has an unnormalized constant, since the param-env candidates never get normalized during candidate assembly (everywhere else we can assume that they are normalized fully).
r? `@lcnr,` though I feel like I've assigned quite a few PRs to you in the last few days, so feel free to reassign to someone else familiar with this code if you're busy!
cc #103243 (fixes the issue, but don't want to auto-close that until a backport is performed).
