Restructure and rename std thread_local internals to make it less of a maze
Every time I try to work on std's thread local internals, it feels like I'm trying to navigate a confusing maze made of macros, deeply nested modules, and types with multiple names/aliases. Time to clean it up a bit.
This PR:
- Exports `Key` with its own name (`Key`), instead of `__LocalKeyInner`
- Uses `pub macro` to put `__thread_local_inner` into a (unstable, hidden) module, removing `#[macro_export]`, removing it from the crate root.
- Removes the `__` from `__thread_local_inner`.
- Removes a few unnecessary `allow_internal_unstable` features from the macros
- Removes the `libstd_thread_internals` feature. (Merged with `thread_local_internals`.)
- And removes it from the unstable book
- Gets rid of the deeply nested modules for the `Key` definitions (`mod fast` / `mod os` / `mod statik`).
- Turns a `#[cfg]` mess into a single `cfg_if`, now that there's no `#[macro_export]` anymore that breaks with `cfg_if`.
- Simplifies the `cfg_if` conditions to not repeat the conditions.
- Removes useless `normalize-stderr-test`, which were left over from when the `Key` types had different names on different platforms.
- Removes a seemingly unnecessary `realstd` re-export on `cfg(test)`.
This PR changes nothing about the thread local implementation. That's for a later PR. (Which should hopefully be easier once all this stuff is a bit cleaned up.)
Rollup of 10 pull requests
Successful merges:
- #108760 (Add lint to deny diagnostics composed of static strings)
- #109444 (Change tidy error message for TODOs)
- #110419 (Spelling library)
- #110550 (Suggest deref on comparison binop RHS even if type is not Copy)
- #110641 (Add new rustdoc book chapter to describe in-doc settings)
- #110798 (pass `unused_extern_crates` in `librustdoc::doctest::make_test`)
- #110819 (simplify TrustedLen impls)
- #110825 (diagnostics: add test case for already-solved issue)
- #110835 (Make some region folders a little stricter.)
- #110847 (rustdoc-json: Time serialization.)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Add new rustdoc book chapter to describe in-doc settings
Fixes#55165.
I continue going through old rustdoc issues. This one made a lot of sense so decided to add the missing chapter.
r? ``@notriddle``
Spelling library
Split per https://github.com/rust-lang/rust/pull/110392
I can squash once people are happy w/ the changes. It's really uncommon for large sets of changes to be perfectly acceptable w/o at least some changes.
I probably won't have time to respond until tomorrow or the next day
Change tidy error message for TODOs
Blocked on #109440 (first few commits are from where)
IMO "deprecated" doesn't really explain anything, I've tried to highlight the actual reason we error on TODOs. The message is not at all perfect, maybe someone has ideas how to phrase it better?
Add lint to deny diagnostics composed of static strings
r? ghost
I'm hoping to have a lint that semi-automatically converts simple diagnostics such as `struct_span_err(span, "msg").help("msg").span_note(span2, "msg").emit()` to typed session diagnostics. It's quite hacky and not entirely working because of problems with `x fix` but should hopefully help reduce some of the work.
I'm going to start trying to apply what I can from this, but opening this as a draft in case anyone wants to develop on it.
cc #100717
coverage: Don't underflow column number
I noticed this when running coverage on a debug build of rustc. There
may be other places that do this but I'm just fixing the one I hit.
r? `@wesleywiser` `@richkadel`
Add regression tests for const-generic inherent associated types
Fixes#109759.
The tests are no longer failing since #96840 which was merged recently (#109410 is no longer necessary for them).
`@rustbot` label F-inherent_associated_types
Use the standard macOS CI runner
This moves back to the standard macOS CI runner instead of the large runners. The infra team is discussing whether the large runners are worth the cost at our heavy usage and whether those credits are better spent elsewhere. This will slow down CI build times unfortunately, but while we figure out our CI spending budget, that's a price we'll unfortunately have to pay.
r? `@pietroalbini`
Fix `std` compilation error for wasi+atomics
Fix https://github.com/rust-lang/rust/issues/109727
It seems that the `unsupported/once.rs` module isn't meant to exist at the same time as the `futex` module, as they have conflicting definitions.
I've solved this by defining the `once` module only if `not(target_feature = "atomics")`.
The `wasm32-unknown-unknown` target [similarly only defines the `once` module if `not(target_feature = "atomics")`](01c4f31927/library/std/src/sys/wasm/mod.rs (L69-L70)).
As show in [this block of code](01c4f31927/library/std/src/sys_common/once/mod.rs (L10-L34)), the `sys::once` module doesn't need to exist if `all(target_arch = "wasm32", target_feature = "atomics")`.
Improve tests for #110138
These should live in rustdoc-json, not rustdoc-ui, so we can run assertions, and not just check there's no ICE
CC #100515, as we never document this suite
r? rustdoc
Update documentation wording on path 'try_exists' functions
Just eliminate the quadruple negation in `doesn't silently ignore errors unrelated to ... not existing.`
Replace `yes` command by `while-echo` in test `tests/ui/process/process-sigpipe.rs`
The `yes` command is not available on all platforms.
Fixes#108596.
Inviting `@mvf` as he contributed to this patch. Thanks! This issue has been discussed in https://github.com/rust-lang/rust/pull/106673 but was moved to #108596 to get going.
CC `@gh-tr`
r? `@workingjubilee`
`@rustbot` label +O-neutrino
Notes about the comments https://github.com/rust-lang/rust/pull/106673#discussion_r1117324265:
- The `echo` command is `/proc/boot/echo` (not built-in)
- `/bin/sh` is a symlink to `/proc/boot/ksh`
```sh
# ls -l /bin/sh /proc/boot/ksh /proc/boot/echo
lrwxrwxrwx 1 root root 14 Mar 20 07:52 /bin/sh -> /proc/boot/ksh
-r-xr-xr-x 1 root root 9390 Sep 12 2022 /proc/boot/echo
-r-xr-xr-x 1 root root 308114 Sep 12 2022 /proc/boot/ksh
```
black_box doc corrections for clarification - Issue #107957
Made a complete pass through the docs to help resolve https://github.com/rust-lang/rust/issues/107957
No code changes, just documentation
`@rustbot` label +T-libs-api -T-libs
Rewrite MemDecoder around pointers not a slice
This is basically https://github.com/rust-lang/rust/pull/109910 but I'm being a lot more aggressive. The pointer-based structure means that it makes a lot more sense to absorb more complexity into `MemDecoder`, most of the diff is just complexity moving from one place to another.
The primary argument for this structure is that we only incur a single bounds check when doing multi-byte reads from a `MemDecoder`. With the slice-based implementation we need to do those with `data[position..position + len]` , which needs to account for `position + len` wrapping. It would be possible to dodge the first bounds check if we stored a slice that starts at `position`, but that would require updating the pointer and length on every read.
This PR also embeds the failure path in a separate function, which means that this PR should subsume all the perf wins observed in https://github.com/rust-lang/rust/pull/109867.
They're semantically the same, so this means the backends don't need to handle the intrinsic and means fewer MIR basic blocks in pointer arithmetic code.
Use `?0` notation for ty/ct/int/float/region vars
Aligns the notation for infer vars that T-types and friends most often uses for inference variables with the notation in the compiler (which is kinda a sigil nightmare IMO: `_#`) by adopting `?0` style infer vars.
This mostly affects debug output since verbose infer vars shouldn't show up in user-facing places.
Does this need an MCP? It's debug output, so I'm thinking no, but happy to open one. 🤔
r? types
Rollup of 6 pull requests
Successful merges:
- #110556 (Switch to `EarlyBinder` for `explicit_item_bounds`)
- #110615 (Add `impl_tag!` macro to implement `Tag` for tagged pointer easily)
- #110649 (Fix no_global_oom_handling build)
- #110671 (Consider polarity in new solver)
- #110783 (Fix ICE on --print=... i/o errors)
- #110796 (Updating Wake example to use new 'pin!' macro)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Updating Wake example to use new 'pin!' macro
Closes: https://github.com/rust-lang/rust/issues/109965
I have already had this reviewed and approved here: https://github.com/rust-lang/rust/pull/110026 . But because I had some git issues and chose the "nuke it" option as my solution it didn't get merged. I nuked it too quickly. I am sorry for trouble of reviewing twice.
Consider polarity in new solver
It's kinda ugly to have a polarity check in all of the builtin impls -- I guess I could consider the polarity at the top of assemble-builtin but that would require adding a polarity fn to `GoalKind`...
🤷 putting this up just so i dont forget, since it's needed to bootstrap core during coherence (this alone does not allow core to bootstrap though, additional work is needed!)
r? ``@lcnr``
Fix no_global_oom_handling build
`provide_sorted_batch` in core is incorrectly marked with `#[cfg(not(no_global_oom_handling))]` which prevents core from building with the cfg enabled.
Nothing in `core` allocates memory (including this function). The `cfg` gate is incorrect.
cc ``@dpaoliello``
r? ``@wesleywiser``
The cfg was added by #107191
Add `impl_tag!` macro to implement `Tag` for tagged pointer easily
r? `@Nilstrieb`
This should also lifts the need to think about safety from the callers (`impl_tag!` is robust (ish, see the macro issue)) and removes the possibility of making a "weird" `Tag` impl.
