Mark ascii methods on primitive types stable in 1.23.0 not 1.21.0.
The ascii_methods_on_intrinsics feature stabilization
didn't land in time for 1.21.0. Update the annotation
so the documentation is correct about when these
methods became available.
MIR borrowck: implement union-and-array-compatible semantics
Fixes#44831.
Fixes#44834.
Fixes#45537.
Fixes#45696 (by implementing DerefPure semantics, which is what we want going forward).
r? @nikomatsakis
Give compile_error macro examples
I cannot get Rust to build at all with it complaining about GCC not being a valid C compiler or something, so letting TravisCI be my tester...
Fixes#46171
Mention the name of ? in Result's docs
Fixes#42725
or at least, this is the best we can really do. #35946 is tracking
better errors already, so that should cover the other part of it.
Consistent parameter name for numeric ‘checked’ operations.
Some checked operations use `rhs` as a parameter name, and some use
`other`. For the sake of consistency, unify everything under the `rhs`
name.
Fixes https://github.com/rust-lang/rust/issues/46308.
Make doc stubs for builtin macros reflect existing support for trailing commas
This modifies the `macro_rules!` stubs in `std` for some of the compiler builtin macros in order to better reflect their currently supported grammar. To my understanding these stubs have no impact on compiler output whatsoever, and only exist so that they may appear in the documentation.
P.S. It is in fact true that `env!` supports trailing commas while `option_env!` currently does not. (I have another issue for this)
I don't imagine there's any way to automatically test these stubs, but I did *informally* test the new definitions on the playpen to see that they accept the desired invocations, as well as inspect the updated doc output.
Some checked operations use `rhs` as a parameter name, and some use
`other`. For the sake of consistency, unify everything under the `rhs`
name.
Fixes https://github.com/rust-lang/rust/issues/46308.
The ascii_methods_on_intrinsics feature stabilization
didn't land in time for 1.21.0. Update the annotation
so the documentation is correct about when these
methods became available.
Reject '2' as a binary digit in internals of b: number formatting
The `radix!` macro generates an implementation of the private trait `GenericRadix`, and the code replaced changes Binary's implementation to no longer accept '2' as a valid digit to print.
Granted, this code is literally only ever called from another method in this private trait, and that method has logic to never hand a '2' to the printing function. Even given this, the code's there, I thought it would be best to fix this for clarity of anyone reading it.
impl From<bool> for AtomicBool
This seems like an obvious omission from #45610. ~~I've used the same feature name and version in the hope that this can be backported to beta so it's stabilized with the other impls. If it can't be I'll change it to `1.24.0`.~~
Stabilize some `ascii_ctype` methods
As discussed in #39658, this PR stabilizes those methods for `u8` and `char`. All inherent `ascii_ctype` for `[u8]` and `str` are removed as we prefer the more explicit version `s.chars().all(|c| c.is_ascii_())`.
This PR doesn't modify the `AsciiExt` trait. There, the `ascii_ctype` methods are still unstable. It is planned to remove those in the future (I think). I had to modify some code in `ascii.rs` to properly implement `AsciiExt` for all types.
Fixes#39658.
I don't believe the previous code `0 ... 2` would run into any real problems, but it seems confusing to read, given that '2' is never a valid binary digit.
As far as I can tell this code is only ever called from within another private method in the trait which has logic to never hand it '2' anyways. I thought we could change this for clarity anyways.
Remove `T: Sized` on `ptr::is_null()`
Originally from #44932 -- this is purely a revert of the last commit of that PR, which was removing some changes from the previous commits in the PR. So a revert of a revert means this is code written by @cuviper!
@mikeyhew makes a compelling case in https://github.com/rust-lang/rfcs/issues/433#issuecomment-345495505 for why this is the right way to implement `is_null` for trait objects. And the behavior for slices makes sense to me as well.
```diff
impl<T: ?Sized> *const T {
- pub fn is_null(self) -> bool where T: Sized;
+ pub fn is_null(self) -> bool;
}
impl<T: ?Sized> *mut T {
- pub fn is_null(self) -> bool where T: Sized;
+ pub fn is_null(self) -> bool;
}
Document non-obvious behavior of fmt::UpperHex & co for negative integers
Before stabilization I’d have suggested changing the behavior, but that time is past.
Stabilize spin_loop_hint
Stabilize `spin_loop_hint` in release `1.23.0`.
I've also renamed feature `hint_core_should_pause` to `spin_loop_hint`.
cc #41196
This commit adds compiler support for two basic operations needed for binding
SIMD on x86 platforms:
* First, a `nontemporal_store` intrinsic was added for the `_mm_stream_ps`, seen
in rust-lang-nursery/stdsimd#114. This was relatively straightforward and is
quite similar to the volatile store intrinsic.
* Next, and much more intrusively, a new type to the backend was added. The
`x86_mmx` type is used in LLVM for a 64-bit vector register and is used in
various intrinsics like `_mm_abs_pi8` as seen in rust-lang-nursery/stdsimd#74.
This new type was added as a new layout option as well as having support added
to the trans backend. The type is enabled with the `#[repr(x86_mmx)]`
attribute which is intended to just be an implementation detail of SIMD in
Rust.
I'm not 100% certain about how the `x86_mmx` type was added, so any extra eyes
or thoughts on that would be greatly appreciated!
Prevent fmt::Arguments from being shared across threads
Fixes#45197
This is a **breaking change**! Without doing this it's very easy to create race conditions.
There's probably a way to do this without breaking valid use cases, but it would require quite an overhaul of the formatting machinery.
