| Age | Commit message (Collapse) | Author | Lines |
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Stabilize const_cstr_from_ptr (CStr::from_ptr, CStr::count_bytes)
Completed the pair of FCPs https://github.com/rust-lang/rust/issues/113219#issuecomment-2016939401 + https://github.com/rust-lang/rust/issues/114441#issuecomment-2016942566.
`CStr::from_ptr` is covered by just the first FCP on its own. `CStr::count_bytes` requires the approval of both FCPs. The second paragraph of the first link and the last paragraph of the second link explain the relationship between the two FCPs. As both have been approved, we can proceed with stabilizing `const` on both of these already-stable functions.
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Use pidfd_spawn for faster process spawning when a PidFd is requested
glibc 2.39 added `pidfd_spawnp` and `pidfd_getpid` which makes it possible to get pidfds while staying on the CLONE_VFORK path.
verified that vfork gets used with strace:
```
$ strace -ff -e pidfd_open,clone3,openat,execve,waitid,close ./x test std --no-doc -- pidfd
[...]
[pid 2820532] clone3({flags=CLONE_VM|CLONE_PIDFD|CLONE_VFORK|CLONE_CLEAR_SIGHAND, pidfd=0x7b7f885fec6c, exit_signal=SIGCHLD, stack=0x7b7f88aff000, stack_size=0x9000}strace: Process 2820533 attached
<unfinished ...>
[pid 2820533] execve("/home/the8472/bin/sleep", ["sleep", "1000"], 0x7ffdd0e268d8 /* 107 vars */) = -1 ENOENT (No such file or directory)
[pid 2820533] execve("/home/the8472/.cargo/bin/sleep", ["sleep", "1000"], 0x7ffdd0e268d8 /* 107 vars */) = -1 ENOENT (No such file or directory)
[pid 2820533] execve("/usr/local/bin/sleep", ["sleep", "1000"], 0x7ffdd0e268d8 /* 107 vars */) = -1 ENOENT (No such file or directory)
[pid 2820533] execve("/usr/bin/sleep", ["sleep", "1000"], 0x7ffdd0e268d8 /* 107 vars */ <unfinished ...>
[pid 2820532] <... clone3 resumed> => {pidfd=[3]}, 88) = 2820533
[pid 2820533] <... execve resumed>) = 0
[pid 2820532] openat(AT_FDCWD, "/proc/self/fdinfo/3", O_RDONLY|O_CLOEXEC) = 4
[pid 2820532] close(4) = 0
```
Tracking issue: #82971
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Generalize `fn allocator` for Rc/Arc.
Split out from #119761
- For `Rc`/`Arc`, the existing associated `fn`s are changed to allow unsized pointees.
- For `Weak`s, new methods are added.
`````@rustbot````` label +A-allocators
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A `rustc_const_stable` attribute by itself has nonintuitive purpose when
placed in a public module.
Separately, it would probably be okay to rename `const_strlen` to just
`strlen` to make it more clear this is our general-purpose
implementation of strlen now, not something specifically for const
(avoiding confusion like in PR 127444).
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as_simd: fix doc comment to be in line with align_to
In #121201, the guarantees about `align_offset` and `align_to` were changed. This PR aims to correct the doc comment of `as_simd` to be in line with the new `align_to`.
Tagging #86656 for good measure.
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Rename `lazy_cell_consume` to `lazy_cell_into_inner`
Name this something that is less confusable with an atomic consume API for `{Lazy,Once}Lock`.
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core: Limit remaining f16 doctests to x86_64 linux
On s390x, every use of the f16 data type will currently ICE due to https://github.com/llvm/llvm-project/issues/50374, causing doctest failures on the platform.
Most doctests were already restricted to certain platforms, so fix this by likewise restricting the remaining five.
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Don't mark `DEBUG_EVENT` struct as `repr(packed)`
That would give it alignment of 1 which is ABI-incompatible with its C definition.
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Suggest borrowing on fn argument that is `impl AsRef`
When encountering a move conflict, on an expression that is `!Copy` passed as an argument to an `fn` that is `impl AsRef`, suggest borrowing the expression.
```
error[E0382]: use of moved value: `bar`
--> f204.rs:14:15
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12 | let bar = Bar;
| --- move occurs because `bar` has type `Bar`, which does not implement the `Copy` trait
13 | foo(bar);
| --- value moved here
14 | let baa = bar;
| ^^^ value used here after move
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help: borrow the value to avoid moving it
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13 | foo(&bar);
| +
```
Fix #41708
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Name this something that is less confusable with an atomic consume API for
`{Lazy,Once}Lock`.
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On s390x, every use of the f16 data type will currently ICE
due to https://github.com/llvm/llvm-project/issues/50374,
causing doctest failures on the platform.
Most doctests were already restricted to certain platforms,
so fix this by likewise restricting the remaining five.
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r=pietroalbini
do not run test where it cannot run
This was seen on Ferrocene, where we have a custom test target that does not have unwind support
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That would give it alignment of 1 which is ABI-incompatible with its C
definition.
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Exposing STARTUPINFOW.wShowWindow in CommandExt trait
Hi:
I needed a way to control how a new process's window is displayed in Windows (normal, minimized, maximized, etc).
I noticed that there is no direct way to do that (I even searched for crates doing this, but didn't find any).
Inspecting the standard library source code, I figured that it would be a good addition to CommandExt trait that allows some Windows specific customization to a Command.
This is my first time contributing to Rust, so please bear with me if I'm not following the rules :)
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impl FusedIterator and a size hint for the error sources iter
cc tracking issue #58520
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control how a new process should display its window (normal, minimized, maximized, etc)
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This was seen on Ferrocene, where we have a custom test target that does not have unwind support
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std: Set `has_reliable_f16` to false for MIPS targets in build.rs
This PR makes std tests link for MIPS again (they broke with https://github.com/rust-lang/rust/pull/126608) by avoiding the following link errors. Step-by-step instructions on how to reproduce these errors in docker can be found below.
std.9e27ea-cgu.12:(.text._ZN3std3num8test_num17edc3E+0x38): undefined reference to `__gnu_f2h_ieee'
std.9e27ea-cgu.12:(.text._ZN3std3num8test_num17hdc3E+0x38): undefined reference to `__gnu_h2f_ieee'
This PR just adds one line of config in existing f16 infrastructure. It also disables four doctests that fails with the same link errors.
## Step-by-step to reproduce linking error
1. Prepare:
```sh
docker run -it ubuntu:24.10
apt update && apt install -y \
libc6-mips-cross \
libc6-mipsel-cross \
libc6-mips64-cross \
libc6-mips64el-cross \
gcc-mips-linux-gnu \
gcc-mipsel-linux-gnu \
gcc-mips64-linux-gnuabi64 \
gcc-mips64el-linux-gnuabi64 \
git curl python3 build-essential
git clone --depth 1 https://github.com/rust-lang/rust.git
cd rust
```
2. Try to link std tests for any of these 4 MIPS targets by running any one of these commands:
```sh
CC_mips_unknown_linux_gnu=mips-linux-gnu-gcc \
CARGO_TARGET_MIPS_UNKNOWN_LINUX_GNU_LINKER=mips-linux-gnu-gcc \
./x test library/std --target mips-unknown-linux-gnu
CC_mipsel_unknown_linux_gnu=mipsel-linux-gnu-gcc \
CARGO_TARGET_MIPSEL_UNKNOWN_LINUX_GNU_LINKER=mipsel-linux-gnu-gcc \
./x test library/std --target mipsel-unknown-linux-gnu
CC_mips64_unknown_linux_gnuabi64=mips64-linux-gnuabi64-gcc \
CARGO_TARGET_MIPS64_UNKNOWN_LINUX_GNUABI64_LINKER=mips64-linux-gnuabi64-gcc \
./x test library/std --target mips64-unknown-linux-gnuabi64
CC_mips64el_unknown_linux_gnuabi64=mips64el-linux-gnuabi64-gcc \
CARGO_TARGET_MIPS64EL_UNKNOWN_LINUX_GNUABI64_LINKER=mips64el-linux-gnuabi64-gcc \
./x test library/std --target mips64el-unknown-linux-gnuabi64
```
### Expected
No link error. After this PR there are no link errors.
### Actual
```
error: linking with `mips-linux-gnu-gcc` failed: exit status: 1
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= note: LC_ALL="C" PATH="/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/bin:/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/bin:/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" VSLANG="1033" "mips-linux-gnu-gcc" "/tmp/rustcEtKsay/symbols.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.00.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.01.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.02.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.03.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.04.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.05.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.06.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.07.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.08.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.09.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.10.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.11.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.12.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.13.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.14.rcgu.o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.15.rcgu.o" "-Wl,--as-needed" "-L" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps" "-L" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/release/deps" "-L" "/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/mips-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/librand_xorshift-deb32232a867c543.rlib" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/librand-5a391600dce9d98f.rlib" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/librand_core-a11cfba3d86c5298.rlib" "/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/mips-unknown-linux-gnu/lib/libtest-65b05caf5a9b99a4.rlib" "/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/mips-unknown-linux-gnu/lib/libgetopts-ba692b2f798aef60.rlib" "/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/mips-unknown-linux-gnu/lib/libunicode_width-20ec8b475126cb0b.rlib" "/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/mips-unknown-linux-gnu/lib/librustc_std_workspace_std-c17f739fee51cc86.rlib" "-L" "/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/mips-unknown-linux-gnu/lib" "-Wl,-Bdynamic" "-lstd-124ee57a4c00deda" "-Wl,-Bstatic" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/libcompiler_builtins-bd55a137b89bc81f.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/mips-unknown-linux-gnu/lib" "-o" "/rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-Wl,-O1" "-nodefaultlibs" "-Wl,-z,origin" "-Wl,-rpath,$ORIGIN/../lib"
= note: /usr/lib/gcc-cross/mips-linux-gnu/12/../../../../mips-linux-gnu/bin/ld: /rust/build/x86_64-unknown-linux-gnu/stage1-std/mips-unknown-linux-gnu/release/deps/std-1cffa50fa8c43b63.std.9ee227e919a554fa-cgu.12.rcgu.o: in function `std::num::test_num':
std.9ee227e919a554fa-cgu.12:(.text._ZN3std3num8test_num17haed2ea710c1afdc3E+0x38): undefined reference to `__gnu_f2h_ieee'
/usr/lib/gcc-cross/mips-linux-gnu/12/../../../../mips-linux-gnu/bin/ld: std.9ee227e919a554fa-cgu.12:(.text._ZN3std3num8test_num17haed2ea710c1afdc3E+0x3c): undefined reference to `__gnu_f2h_ieee'
/usr/lib/gcc-cross/mips-linux-gnu/12/../../../../mips-linux-gnu/bin/ld: std.9ee227e919a554fa-cgu.12:(.text._ZN3std3num8test_num17haed2ea710c1afdc3E+0x44): undefined reference to `__gnu_h2f_ieee'
...
collect2: error: ld returned 1 exit status
error: could not compile `std` (lib test) due to 1 previous error
```
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clarify `sys::unix::fd::FileDesc::drop` comment
closes #66876
simply clarifies some resource-relevant things regarding the `close` syscall to reduce the amount of search needed in other parts of the web.
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Mark format! with must_use hint
Uses unstable feature https://github.com/rust-lang/rust/issues/94745
Part of #126475
First contribution to rust, please let me know if the blessing of tests is correct
Thanks `@bjorn3` for the help
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r=compiler-errors,oli-obk,lnicola
Make casts of pointers to trait objects stricter
This is an attempt to `fix` https://github.com/rust-lang/rust/issues/120222 and https://github.com/rust-lang/rust/issues/120217.
This is done by adding restrictions on casting pointers to trait objects.
Before this PR the rules were as follows:
> When casting `*const X<dyn A>` -> `*const Y<dyn B>`, principal traits in `A` and `B` must refer to the same trait definition (or no trait).
With this PR the rules are changed to
> When casting `*const X<dyn Src>` -> `*const Y<dyn Dst>`
> - if `Dst` has a principal trait `DstP`,
> - `Src` must have a principal trait `SrcP`
> - `dyn SrcP` and `dyn DstP` must be the same type (modulo the trait object lifetime, `dyn T+'a` -> `dyn T+'b` is allowed)
> - Auto traits in `Dst` must be a subset of auto traits in `Src`
> - Not adhering to this is currently a FCW (warn-by-default + `FutureReleaseErrorReportInDeps`), instead of an error
> - if `Src` has a principal trait `Dst` must as well
> - this restriction will be removed in a follow up PR
This ensures that
1. Principal trait's generic arguments match (no `*const dyn Tr<A>` -> `*const dyn Tr<B>` casts, which are a problem for [#120222](https://github.com/rust-lang/rust/issues/120222))
2. Principal trait's lifetime arguments match (no `*const dyn Tr<'a>` -> `*const dyn Tr<'b>` casts, which are a problem for [#120217](https://github.com/rust-lang/rust/issues/120217))
3. No auto traits can be _added_ (this is a problem for arbitrary self types, see [this comment](https://github.com/rust-lang/rust/pull/120248#discussion_r1463835350))
Some notes:
- We only care about the metadata/last field, so you can still cast `*const dyn T` to `*const WithHeader<dyn T>`, etc
- The lifetime of the trait object itself (`dyn A + 'lt`) is not checked, so you can still cast `*mut FnOnce() + '_` to `*mut FnOnce() + 'static`, etc
- This feels fishy, but I couldn't come up with a reason it must be checked
The diagnostics are currently not great, to say the least, but as far as I can tell this correctly fixes the issues.
cc `@oli-obk` `@compiler-errors` `@lcnr`
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Run alloc sync tests
I was browsing the code and this struck me as weird. We're not running some doc tests because, the comment says, Windows builders deadlock. That should absolutely not happen, at least with our current implementation. And if it does happen I'd like to know.
Just to be sure though I'll do some try builds.
try-job: x86_64-msvc
try-job: i686-msvc
try-job: i686-mingw
try-job: x86_64-mingw
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Give VaList its own home
Just rearranging things internally and reexporting.
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Rollup of 8 pull requests
Successful merges:
- #127179 (Print `TypeId` as hex for debugging)
- #127189 (LinkedList's Cursor: method to get a ref to the cursor's list)
- #127236 (doc: update config file path in platform-support/wasm32-wasip1-threads.md)
- #127297 (Improve std::Path's Hash quality by avoiding prefix collisions)
- #127308 (Attribute cleanups)
- #127354 (Describe Sized requirements for mem::offset_of)
- #127409 (Emit a wrap expr span_bug only if context is not tainted)
- #127447 (once_lock: make test not take as long in Miri)
r? `@ghost`
`@rustbot` modify labels: rollup
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once_lock: make test not take as long in Miri
Allocating 1000 list elements takes a while (`@zachs18` reported >5min), so let's reduce the iteration count when running in Miri. Unfortunately due to this clever `while let i @ 0..LEN =` thing, the count needs to be a constants, and constants cannot be shadowed, so we need to use another trick to hide the `cfg!(miri)` from the docs. (I think this loop condition may be a bit too clever, it took me a bit to decipher. Ideally this would be `while let i = ... && i < LEN`, but that is not stable yet.)
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Describe Sized requirements for mem::offset_of
The container doesn't have to be sized, but the field must be sized (at least until https://github.com/rust-lang/rust/issues/126151 is stable).
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Improve std::Path's Hash quality by avoiding prefix collisions
This adds a bit rotation to the already existing state so that the same sequence of characters chunked at different offsets into separate path components results in different hashes.
The tests are from #127255
Closes #127254
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LinkedList's Cursor: method to get a ref to the cursor's list
We're already providing `.back()` & `.front()`, for which we hold onto a reference to the parent list, so why not share it? Useful for when you got `LinkedList` -> `CursorMut` -> `Cursor` and cannot take another ref to the list, even though you should be able to. This seems to be completely safe & sound.
The name is, of course, bikesheddable.
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Print `TypeId` as hex for debugging
In <https://github.com/rust-lang/rust/pull/127134>, the `Debug` impl for `TypeId` was changed to print a single integer rather than a tuple. Change this again to print as hex for more concise and consistent formatting, as was suggested.
Result:
TypeId(0x1378bb1c0a0202683eb65e7c11f2e4d7)
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Don't check the capacity every time (and also for `Extend` for tuples, as this is how `unzip()` is implemented).
I did this with an unsafe method on `Extend` that doesn't check for growth (`extend_one_unchecked()`). I've marked it as perma-unstable currently, although we may want to expose it in the future so collections outside of std can benefit from it. Then specialize `Extend for (A, B)` for `TrustedLen` to call it.
It may seem that an alternative way of implementing this is to have a semi-public trait (`#[doc(hidden)]` public, so collections outside of core can implement it) for `extend()` inside tuples, and specialize it from collections. However, it is impossible due to limitations of `min_specialization`.
A concern that may arise with the current approach is that implementing `extend_one_unchecked()` correctly must also incur implementing `extend_reserve()`, otherwise you can have UB. This is a somewhat non-local safety invariant. However, I believe this is fine, since to have actual UB you must have unsafe code inside your `extend_one_unchecked()` that makes incorrect assumption, *and* not implement `extend_reserve()`. I've also documented this requirement.
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offset_from, offset: clearly separate safety requirements the user needs to prove from corollaries that automatically follow
By landing https://github.com/rust-lang/rust/pull/116675 we decided that objects larger than `isize::MAX` cannot exist in the address space of a Rust program, which lets us simplify these rules.
For `offset_from`, we can even state that the *absolute* distance fits into an `isize`, and therefore exclude `isize::MIN`. This PR also changes Miri to treat an `isize::MIN` difference like the other isize-overflowing cases.
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Add `new_range_api` for RFC 3550
Initial implementation for #125687
This includes a `From<legacy::RangeInclusive> for RangeInclusive` impl for convenience, instead of the `TryFrom` impl from the RFC. Having `From` is highly convenient and the debug assert should find almost all misuses.
This includes re-exports of all existing `Range` types under `core::range`, plus the range-related traits (`RangeBounds`, `Step`, `OneSidedRange`) and the `Bound` enum.
Currently the iterators are just wrappers around the old range types.
Tracking issues:
- https://github.com/rust-lang/rust/issues/123741
- https://github.com/rust-lang/rust/issues/125687
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Improve readability of some fmt code examples
Some indent was weird. Some examples were too long (overall better to keep it to maximum 80 columns, but only changed the most outstanding ones).
r? ```@Amanieu```
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Improve dead code analysis
Fixes #120770
1. check impl items later if self ty is private although the trait method is public, cause we must use the ty firstly if it's private
2. mark the adt live if it appears in pattern, like generic argument, this implies the use of the adt
3. based on the above, we can handle the case that private adts impl Default, so that we don't need adding rustc_trivial_field_reads on Default, and the logic in should_ignore_item
r? ``@pnkfelix``
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impl PathBuf::add_extension and Path::with_added_extension
See the ACP for motivation and discussions - https://github.com/rust-lang/libs-team/issues/368
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This includes a `From<legacy::RangeInclusive> for RangeInclusive` impl for convenience, instead of the `TryFrom` impl from the RFC.
Having `From` is highly convenient and the assertion is unlikely to be a problem in practice.
This includes re-exports of all existing `Range` types under `core::range`, plus the range-related traits (`RangeBounds`, `Step`, `OneSidedRange`) and the `Bound` enum.
Currently the iterators are just wrappers around the old range types,
and most other trait impls delegate to the old rage types as well.
Also includes an `.iter()` shorthand for `.clone().into_iter()`
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Signed-off-by: tison <wander4096@gmail.com>
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Signed-off-by: tison <wander4096@gmail.com>
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Update windows-bindgen to 0.58.0
This also switches from the bespoke `std` generated bindings to the normal `sys` ones everyone else uses.
This has almost no difference except that the `sys` bindings use the `windows_targets::links!` macro for FFI imports, which we implement manually. This does cause the diff to look much larger than it really is but the bulk of the changes are mostly contained to the generated code.
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Use the native unwind function in miri where possible
Continuation of https://github.com/rust-lang/miri/pull/3319
cc `@RalfJung`
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The container doesn't have to be sized, but the field must be sized (at
least until https://github.com/rust-lang/rust/issues/126151 is stable).
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