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Reduce a Code Repetition Related to Bit Operation
This PR is related to [#49937](https://github.com/rust-lang/rust/issues/49937).
Should I do more commits about [`FIXME(49937)`](https://github.com/rust-lang/rust/search?q=FIXME%2849937%29&unscoped_q=FIXME%2849937%29) in this PR?
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Improved test output
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Output diagnostic information for rustdoc
Use the information same as rustc.
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r=alexcrichton
Remove restriction on isize/usize in repr(simd)
As discussed in #55078, there's no known reason for this restriction.
It's unlikely that repr(simd) will be stabilized in its current form, but
might as well remove some restrictions on it.
This removes the branch in `is_machine` which returns false for these types.
`is_machine` is only used for the repr(simd) type validation check.
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No old chestnuts in iter::repeat docs
The current language may be amusing, yet is just imprecise and most especially difficult to understand for someone who speaks English as a foreign language.
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Use try blocks in rustc_codegen_ssa
r? @scottmcm
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Don't run test launching `echo` since that doesn't exist on Windows
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bootstrap: Default to a sensible llvm-suffix.
I used version-channel-sha, hopefully that should work.
I checked that bootstrap builds, but I cannot check anything else since the llvm
build process is started from cargo, and thus calls clang, and thus I hit the
same bug I hope to fix with this change.
Hopefully fixes #59034.
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Add `-Z allow_features=...` flag
Adds a compiler option to allow only whitelisted features.
For projects on nightly that want to prevent feature-creep (and maybe, someday, move off of nightly). Not being able to enforce this has been a problem on Fuchsia and at other big companies.
This doesn't support filtering edition feature flags, but someone is welcome to add that if they need it.
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Revert "Don't generate minification variable if minification disabled"
Reverts #58643
Fixes #59157
https://github.com/rust-lang/rust/pull/58643 made us stop generating minification variables when minification is disabled, however they may still be needed for parent crates that were generated with minification (this will always be the case for libstd and libcore)
r? @QuietMisdreavus @GuillaumeGomez
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[wg-async-await] Add regression test for #55809.
Fixes #55809.
This PR adds a regression test for #55809 which checks that a
overflow does not occur when evaluating a requirement for async
functions and `&mut` arguments in some specific circumstances.
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Stabilize Range*::contains.
Closes https://github.com/rust-lang/rust/issues/32311. There's also a bit of rustfmt on range.rs thrown in for good measure (I forgot to turn off format-on-save in VSCode).
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Make std time tests more robust for platform differences
Previously, `time::tests::since_epoch` and `time::tests::system_time_math` would fail if the platform represents a SystemTime as unix epoch + `u64` nanoseconds.
r? @sfackler
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Suggest return lifetime when there's only one named lifetime
Fix #29094.
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Unregress using scalar unions in constants.
fixes https://github.com/rust-lang/rust/issues/59126
r? @RalfJung
I also made a bunch of these invariants panic instead of report an error.
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rustc: fix ICE when trait alias has bare Self
Fixes https://github.com/rust-lang/rust/issues/59029
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Consistent naming for duration_float methods and additional f32 methods
`duration_float` tracking issue: #54361
New list of methods:
- `as_secs_f64(&self) -> f64`
- `as_secs_f32(&self) -> f32`
- `from_secs_f64(secs: f64) -> Duration`
- `from_secs_f32(secs: f32) -> Duration`
- `mul_f64(self, rhs: f64) -> Duration`
- `mul_f32(self, rhs: f32) -> Duration`
- `div_f64(self, rhs: f64) -> Duration`
- `div_f32(self, rhs: f64) -> Duration`
- `div_duration_f64(self, rhs: Duration) -> f64`
- `div_duration_f32(self, rhs: Duration) -> f32`
With [`num_traits::Float`](https://docs.rs/num-traits/0.2.6/num_traits/float/trait.Float.html) we could've reduced number of methods by factor of two, but unfortunately it's not part of `std`.
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A few improvements to comments in user-facing crates
Not too many this time, and all concern comments (almost all doc comments) in user-facing crates (libstd, libcore, liballoc).
r? @steveklabnik
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add suggestions to invalid macro item error
r? @estebank
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we can now skip should_panic tests with the libtest harness
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Avoid some common false positives in intra doc link checking
The empty string case is never going to be a link. The numeric case may be a link, but if it were it would have resolved locally. It's more likely the makeshift markdown footnote notation (`[0]`, etc)
r? @QuietMisdreavus
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Fix ICE in MIR pretty printing
A `Def::Variant` should be considered as a function in mir pretty
printing. Each variant has a constructor that we must print.
Given the following enum definition:
```rust
pub enum TestMe {
X(usize),
}
```
We will need to generate a constructor for the variant `X` with a
signature that looks something like the following:
```
fn TestMe::X(_1: usize) -> TestMe;
```
Fixes: #59021
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Fix generic argument lookup for Self
Rewrite the SelfCtor early and use the replacement Def when
calculating the path_segs.
Note that this also changes which def is seen by the code that
computes user_self_ty and is_alias_variant_ctor; I don't see a
immediate issue with that, but I'm not 100% clear on the
implications.
Fixes #57924
r? @eddyb
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Fix SGX implementations of read/write_vectored.
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closes https://github.com/rust-lang/rust/issues/57126
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Default to integrated `rust-lld` linker for UEFI targets
The `x86_64-unknown-uefi` target was added in https://github.com/rust-lang/rust/pull/56769 with the linker defaulting to `lld-link`. This means that a system linker with that name is required for linking.
I think defaulting to `rust-lld`, which is shipped with Rust, is a better default for the following reasons:
- Most systems don't have `lld-link` installed, so it forces users to install it first.
- The naming of LLD executables is not standarized, so users often need to create an additional symlink before things work. For example, on Ubuntu `apt install lld` leads to an executable named `lld-link-6.0`.
- We already default to `rust-lld` for [many targets](https://github.com/rust-lang/rust/search?utf8=%E2%9C%93&q=rust-lld&type=), including embedded and WASM targets, so doing the same for UEFI crates seems consistent to me. (It even seems like `x86_64-unknown-uefi` is the [only target](https://github.com/rust-lang/rust/search?q=lld-link&unscoped_q=lld-link) that uses `lld-link`.)
cc @dvdhrm who added the target and @kkk669 who [proposed to use `rust-lld`](https://github.com/rust-lang/rust/pull/56769#issuecomment-461119648).
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SGX target: Expose thread id function in os module
In order to call `std::os::fortanix_sgx::usercalls::send`, you need the thread id. This exposes it through another function in `std::os::fortanix_sgx`.
I looked at how other platforms do this. On Windows and `cfg(unix)` you can get the OS handle from a `thread::JoinHandle`, but that's not sufficient, I need it for a `thread::Thread`. In the future, this functionality could be added to `thread::Thread` and this platform can follow suit.
r? @joshtriplett
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MIPS: add r6 support
MIPS r6 is quite different with the previous version.
It use some new target triples:
mipsisa32r6-unknown-linux-gnu
mipsisa32r6el-unknown-linux-gnu
mipsisa64r6-unknown-linux-gnuabi64
mipsisa64r6el-unknown-linux-gnuabi64
This patch has been tested with Debian Port for mips64r6el,
and the support of these triples also is included in llvm:
https://reviews.llvm.org/rGe58c45a695f39004710b6ce940d489fee800dbd3
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core: ensure VaList passes improper_ctypes lint
Ensure the `core::ffi::VaList` structure passes the `improper_ctypes` lint.
Fixes: #58280
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Move alloc::prelude::* to alloc::prelude::v1, make alloc a subset of std
This was one of the unresolved questions of https://github.com/rust-lang/rfcs/pull/2480. As the RFC says this is maybe not useful in the sense that we are unlikely to ever have a second version, but making the crate a true subset makes one less issue to think about if we stabilize it and later want to merge standard library crates and have Cargo feature flags to enable or disable parts of the `std` crate.
See also discussion in https://github.com/rust-lang/rust/pull/58175.
Also rename the feature gate and point to a dedicated tracking issue: https://github.com/rust-lang/rust/issues/58935
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Change `std::fs::copy` to use `copyfile` on MacOS and iOS
`copyfile` on MacOS is similar to `CopyFileEx` on Windows. It supports copying resource forks, extended attributes, and file ACLs, none of which are copied by the current generic unix implementation.
The API is available from MacOS 10.7 and iOS 4.3 (and possibly earlier but I haven't checked).
Closes #58895.
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r=QuietMisdreavus
Fix "Auto-hide item methods documentation" setting
Fixes #58825.
r? @QuietMisdreavus
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std: Spin for a global malloc lock on wasm32
There's lots of comments in the code, but the main gist of this commit
is that the acquisition of the global malloc lock on the
`wasm32-unknown-unknown` target when threads are enabled will not spin
on contention rather than block.
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appveyor: Use VS2017 for all our images
Originally added in #55935 to test build times, this was reverted
in #56201 due to a belief that it caused the exit code 259 spurious
errors. We've since learned, however, that the 259 exit code is likely
not related to this image update as we're getting it in a number of
locations now.
VS2017 looks like it may be required to compile LLVm in the near future,
notably discovered by #58408 where we attempted to update LLVM.
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