Improve `f32` and `f64` primitive documentation
I noticed that the docs for the primitive floats were fairly short. I first only wanted to add the IEEE specification information (compare [the reference](https://doc.rust-lang.org/reference/types/numeric.html)), but then also added some more beginner-friendly docs. Let me know what you think!
Random doc team assign:
r? @rylev
Use intra-doc links in /library/core/src/cmp.rs
Helps with #75080.
@rustbot modify labels: T-doc, A-intra-doc-links, T-rustdoc
Known issues:
* Links from `core` to `std` (#74481):
* [`Vec::sort_by_key`]
Std panicking unsafe block in unsafe fn
Partial fix of #73904.
This encloses `unsafe` operations in `unsafe fn` in `libstd/ffi/panicking.rs`.
I also made a two lines change to `libstd/thread/local.rs` to add the necessary `unsafe` block without breaking everything else.
@rustbot modify labels: F-unsafe-block-in-unsafe-fn
Unfortunately, sanitizers do not support versioned symbols[1],
so they break filesystem access via the legacy, pre-ino64 ABI.
To use sanitizers on FreeBSD >= 12, we need to build the libc
crate with LIBC_CI=1 to use the new ABI -- including the libc
used for std. But that removes the st_lspare field std was
expecting for the deprecated metadata extension.
Add a way to skip that field to allow the build to work.
[1]: https://github.com/google/sanitizers/issues/628
Move to intra-doc links in library/std/src/path.rs
Helps with #75080.
@rustbot modify labels: T-doc, A-intra-doc-links, T-rustdoc
Known issue: The following links are broken (they are inside trait impls, undocumented in this file, inheriting from the original doc):
- [`Hasher`]
- [`Self`] (referencing `../primitive.slice.html`)
- [`Ordering`]
remove_dir will error if the path doesn't exist or isn't a directory.
It's useful to clarify that this is "remove dir or fail" not "remove dir
if it exists".
I don't think this belongs in the title. "Removes an existing, empty
directory" is strangely worded-- there's no such thing as a non-existing
directory. Better to just say explicitly it will return an error.
Add back unwinding support for Sony PSP
This PR adds back unwinding support for the Sony PSP. The `mipsel-sony-psp` target works well with unwinding. In [rust-psp], we use the `panic_unwind` crate along with LLVM's libunwind to catch panics, run destructors, and print them to the debug screen without aborting all threads.
[rust-psp]: https://github.com/overdrivenpotato/rust-psp
Rollup of 15 pull requests
Successful merges:
- #74712 (Update E0271 explanation)
- #74842 (adjust remaining targets)
- #75151 (Consistent variable name alloc for raw_vec)
- #75162 (Fix the documentation for move about Fn traits implementations)
- #75248 (Add `as_mut_ptr` to `NonNull<[T]>`)
- #75262 (Show multi extension example for Path in doctests)
- #75266 (Add safety section to `NonNull::as_*` method docs)
- #75284 (Show relative example for Path ancestors)
- #75285 (Separate example for Path strip_prefix)
- #75287 (Show Path extension example change multi extension)
- #75288 (Use assert! for Path exists example to check bool)
- #75289 (Remove ambiguity from PathBuf pop example)
- #75290 (fix `min_const_generics` version)
- #75291 (Clean up E0750)
- #75292 (Clean up E0502)
Failed merges:
r? @ghost
Add safety section to `NonNull::as_*` method docs
This basically adds the safety section of `*mut T::as_{ref,mut}` to the
same methods on `NonNull` with minor modifications to fit the
differences.
Part of #48929.
Simplify array::IntoIter
- Initialization can use `transmute_copy` to do the bitwise copy.
- `as_slice` can use `get_unchecked` and `MaybeUninit::slice_get_ref`,
and `as_mut_slice` can do similar.
- `next` and `next_back` can use the corresponding `Range` methods.
- `Clone` doesn't need any unsafety, and we can dynamically update the
new range to get partial drops if `T::clone` panics.
r? @LukasKalbertodt
Implement `into_keys` and `into_values` for associative maps
This PR implements `into_keys` and `into_values` for HashMap and BTreeMap types. They are implemented as unstable, under `map_into_keys_values` feature.
Fixes#55214.
r? @dtolnay
