Based on https://github.com/rust-lang/rust/pull/50911, cc https://github.com/rust-lang/rust/pull/50911#issuecomment-401151270
`#[macro_export] macro_rules` items are collected from the whole crate and are planted into the root module as items, so the external view of the crate is symmetric with its internal view and something like `$crate::my_macro` where `my_macro` is `#[macro_export] macro_rules` works both locally and from other crates.
Auto merge of #52850 - SimonSapin:unstablize, r=alexcrichton
Revert "Stabilize to_bytes and from_bytes for integers."
This reverts commit c8f9b84b393915a48253e3edc862c15a9b7152a7 / PR https://github.com/rust-lang/rust/pull/51835, and reopens the tracking issue https://github.com/rust-lang/rust/issues/49792.
These methods were stabilized in Rust 1.29, which is still in Nightly as of this writing. So my understanding is that it is still time to change our minds. Given the ongoing discussion in https://github.com/rust-lang/rust/pull/51919 about possibly renaming these APIs and since 1.29 goes to beta soon, I’d like to revert this stabilization for now until a decision is made in that PR. It’s possible that a decision will be made in time for 1.29, but there is no urgency. At most I expect this functionality to make it into 1.30.
Auto merge of #52630 - Mark-Simulacrum:rustdoc-cleanup-2, r=QuietMisdreavus
Delete unused code in rustdoc
Also hid the unused crate exports of rustdoc. This is technically a breaking change but we don't even ship librustdoc in the sysroot so I don't expect breakage.
Auto merge of #52830 - matthewjasper:bootstrap-prep, r=matthewjasper
[NLL] Fix some things for bootstrap
Some changes that are required when bootstrapping rustc with NLL enabled.
* Remove a bunch of unused `mut`s that aren't needed, but the existing lint doesn't catch.
* Rewrite a function call to satisfy NLL borrowck. Note that the borrow is two-phase, but gets activated immediately by an unsizing coercion.
Auto merge of #52805 - ljedrz:format_str_literal, r=petrochenkov
Don't format!() string literals
Prefer `to_string()` to `format!()` take 2, this time targetting string literals. In some cases (`&format!("...")` -> `"..."`) also removes allocations. Occurences of `format!("")` are changed to `String::new()`.
Auto merge of #52738 - ljedrz:push_to_extend, r=eddyb
Replace push loops with extend() where possible
Or set the vector capacity where I couldn't do it.
According to my [simple benchmark](https://gist.github.com/ljedrz/568e97621b749849684c1da71c27dceb) `extend`ing a vector can be over **10 times** faster than `push`ing to it in a loop:
10 elements (6.1 times faster):
```
test bench_extension ... bench: 75 ns/iter (+/- 23)
test bench_push_loop ... bench: 458 ns/iter (+/- 142)
```
100 elements (11.12 times faster):
```
test bench_extension ... bench: 87 ns/iter (+/- 26)
test bench_push_loop ... bench: 968 ns/iter (+/- 3,528)
```
1000 elements (11.04 times faster):
```
test bench_extension ... bench: 311 ns/iter (+/- 9)
test bench_push_loop ... bench: 3,436 ns/iter (+/- 233)
```
Seems like a good idea to use `extend` as much as possible.
Auto merge of #51361 - oli-obk:sanity_check_consts, r=nikomatsakis
Do a basic sanity check for all constant values
## Motivation and high level overview
There has been some back and forth in this PR between @RalfJung and me in here about the motivation for this change and the stance it takes on unsafe coding guidelines.
The initial implementation ran its checks on every value read (so `*x`, `y = x`, ...). In unsafe code that isn't reasonable, because we might be invalidating invariants for a short time in order to build up a proper value.
The current implementation is a lint that runs its checks statics and constants. There is no need to check array lengths and enum variants, because it's a hard error to end up with anything but a number, and that one even has to have the required bits to be defined.
## What checks are done?
* Some type related checks
* `char` needs to be a correct unicode character as defined by `char::from_u32`
* A reference to a ZST must have the correct alignment (and be nonzero)
* A reference to anything is dereferenced and its value is checked
* Layout checks use the information from `ty::Layout` to check
* all fields of structs
* all elements of arrays
* enum discriminants
* the fields of an enum variant (the variant is decided by the discriminant)
* whether any union field succeeds in being checked (if none match the memory pattern, the check fails)
* if the value is in the range described by the layout (e.g. for `NonZero*` types)
Changing the layout of a type will thus automatically cause the checks to check for the new layout.
Auto merge of #52751 - QuietMisdreavus:you-shall-not-pass, r=GuillaumeGomez
rustdoc: rework how default passes are chosen
This is a refactor that changes how we select default passes, and changes the set of passes used for `--document-private-items`. It's groundwork for a bigger refactor i want to do.
The major changes:
* There are now two sets of "default passes": one set for "no flags given" and one for "document private items".
* These sets can be selected by a new `DefaultPassOption` enum, which is selected from based on the presence of `--no-defaults` or `--document-private-items` CLI flags, or their associated crate attributes.
* When printing the list of passes, we also print the list of passes for `--document-private-items` in addition to the "default defaults".
* I added `propagate-doc-cfg` and `strip-priv-imports` to the "document private items" set. The former is to ensure items are properly tagged with the full set of cfg flags even when "document private items" is active. The latter is based on feedback and personal experience navigating the `rustc` docs, which use that flag. `strip-priv-imports` only removes non-pub `use` statements, so it should be harmless from a documentation standpoint to remove those items from "private items" documentation.
Auto merge of #52355 - pietroalbini:zfeature, r=eddyb
Add the -Zcrate-attr=foo unstable rustc option
This PR adds a new unstable option to `rustc`: `-Zcrate-attr=foo`. The option can be used to inject crate-level attributes from the CLI, and it's meant to be used by tools like Crater that needs to add their own attributes to a crate without changing the source code.
The exact reason I need this is to implement "edition runs" in Crater: we need to add the preview feature flag to every crate, and editing the crates' source code on the fly might produce unexpected results, while a compiler flag is more reliable.
cc https://github.com/rust-lang-nursery/crater/issues/282 @Mark-Simulacrum
Auto merge of #52546 - nikomatsakis:issue-52050, r=pnkfelix
do not overwrite child def-id in place but rather remove/insert
When inserting a node N into the tree of impls, we sometimes find than an existing node C should be replaced with N. We used to overwrite C in place with the new def-id N -- but since the lists of def-ids are separated by simplified type, that could lead to N being inserted in the wrong place. This meant we might miss conflicts. We are now not trying to be so smart -- we remove C and then add N later.
Fixes #52050
r? @aturon -- do you still remember this code at all? :)
Auto merge of #52711 - eddyb:unsized-manuallydrop, r=nikomatsakis
Change ManuallyDrop<T> to a lang item.
This PR implements the approach @RalfJung proposes in https://internals.rust-lang.org/t/pre-rfc-unions-drop-types-and-manuallydrop/8025 (lang item `struct` instead of `union`).
A followup PR can easily solve #47034 as well, by just adding a few `?Sized` to `libcore/mem.rs`.
- #52702 (Suggest fix when encountering different mutability from impl to trait)
- #52703 (Improve a few vectors - calculate capacity or build from iterators)
- #52740 (Suggest underscore when using dashes in crate namet push fork)
- #52759 (Impl Send & Sync for JoinHandle)
- #52760 (rustc_metadata: test loading atoi instead of cos)
- #52763 (Omit the vendor component in Fuchsia triple)
- #52765 (Remove unused "-Zenable_nonzeroing_move_hints" flag)
- #52769 (Incorporate a stray test)
- #52777 (Fix doc comment for 'ptr::copy_to' method)
- #52779 (revert accidental atty downgrade)
- #52781 (Use a slice where a vector is not necessary)
projects / rust.git / log