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72 Commits

Author SHA1 Message Date
Yuki Okushi
f26f201d42
Rollup merge of #75085 - lzutao:ip_union, r=cuviper 
Transmute big endian `s6_addr` and `[u16; 8]`

The old code already made the assumption to reinterpret
`Ipv6Addr` as `[u16; 8]`.

Glibc, Linux, FreeBSD, Win32 all makes this assumption.
The main motivation of using union it to better optimize code.
Godbolt: https://rust.godbolt.org/z/b4bGvo
Const is introducing unsafe when transmuting.

ref:
* https://docs.microsoft.com/en-us/windows/win32/api/in6addr/ns-in6addr-in6_addr
* 1d6e424741/contrib/ntp/lib/isc/include/isc/ipv6.h (L63)
* 8b531aa996/include/net/net_ip.h (L137)
* https://sourceware.org/git/?p=glibc.git;a=blob;f=inet/netinet/in.h;h=f6355c7efe5192b88337b136ef687fe9a5ed648c;hb=HEAD#l216
 2020-08-11 16:23:45 +09:00
bors
a9025c571e Auto merge of #74621 - LukasKalbertodt:float-docs, r=GuillaumeGomez 
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
 2020-08-11 04:10:39 +00:00
Lzu Tao
0210fd3d73 Transmute between big endian s6_addr and [u16; 8]. 
The old code already made the assumption to reinterpret
`Ipv6Addr` as `[u16; 8]`.

Glibc, Linux, FreeBSD, Win32 all makes this assumption.
The main motivation of using union it to better optimize code.

ref:
* https://docs.microsoft.com/en-us/windows/win32/api/in6addr/ns-in6addr-in6_addr
* 1d6e424741/contrib/ntp/lib/isc/include/isc/ipv6.h (L63)
* 8b531aa996/include/net/net_ip.h (L137)
* https://sourceware.org/git/?p=glibc.git;a=blob;f=inet/netinet/in.h;h=f6355c7efe5192b88337b136ef687fe9a5ed648c;hb=HEAD#l216

Co-authored-by: Josh Stone <cuviper@gmail.com>
Co-authored-by: Peter Atashian <retep998@gmail.com>
 2020-08-10 00:50:26 +00:00
Yuki Okushi
df2da4637f
Rollup merge of #75286 - pickfire:patch-9, r=jyn514 
Add additional case for Path starts with

Show what happens if there is an extra extension
 2020-08-10 09:07:52 +09:00
Yuki Okushi
62e5488198
Rollup merge of #74200 - poliorcetics:std-panicking-unsafe-block-in-unsafe-fn, r=Mark-Simulacrum 
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
 2020-08-10 09:07:46 +09:00
Ivan Tham
4b549fa043
show multiple slashes starts_with Path example 
Co-authored-by: Joshua Nelson <joshua@yottadb.com>
 2020-08-10 00:43:45 +08:00
bors
8bc801b050 Auto merge of #75293 - poliorcetics:intra-doc-links-std-path, r=jyn514 
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`]
 2020-08-09 12:31:03 +00:00
Yuki Okushi
3038ecb07b
Rollup merge of #75289 - pickfire:patch-12, r=jonas-schievink 
Remove ambiguity from PathBuf pop example
 2020-08-09 06:41:33 +09:00
Yuki Okushi
6baee9557a
Rollup merge of #75288 - pickfire:patch-11, r=jonas-schievink 
Use assert! for Path exists example to check bool
 2020-08-09 06:41:32 +09:00
Yuki Okushi
42e163bf40
Rollup merge of #75287 - pickfire:patch-10, r=jonas-schievink 
Show Path extension example change multi extension
 2020-08-09 06:41:30 +09:00
Yuki Okushi
28ab318f57
Rollup merge of #75285 - pickfire:patch-8, r=jonas-schievink 
Separate example for Path strip_prefix
 2020-08-09 06:41:28 +09:00
Yuki Okushi
27b864b154
Rollup merge of #75284 - pickfire:patch-7, r=LukasKalbertodt 
Show relative example for Path ancestors
 2020-08-09 06:41:27 +09:00
Yuki Okushi
cbc6914baa
Rollup merge of #75262 - pickfire:patch-6, r=jyn514 
Show multi extension example for Path in doctests
 2020-08-09 06:41:23 +09:00
Yuki Okushi
ccffe18c3e
Rollup merge of #75162 - poliorcetics:move-documentation-fix, r=jyn514 
Fix the documentation for move about Fn traits implementations

Fixes #74997.

This uses the note from the [reference](https://doc.rust-lang.org/reference/types/closure.html#call-traits-and-coercions) but I can also just put a link to it or do both.

@rusbot modify labels: C-bug T-doc T-libs
 2020-08-09 06:41:20 +09:00
Yuki Okushi
dde4fb3fd2
Rollup merge of #74842 - hermitcore:thread_local, r=Mark-Simulacrum 
adjust remaining targets

- fix commit 7dc3886
- previous commit doesn't adjust all targets
 2020-08-09 06:41:16 +09:00
bors
1facd4a77b Auto merge of #75163 - canova:map_into_keys_values, r=dtolnay 
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
 2020-08-08 18:15:50 +00:00
Nazım Can Altınova
4cd2637e2b
Update the tracking issue number of map_into_keys_values 2020-08-08 16:35:54 +02:00
Alexis Bourget
1cd8dffdae Add an example about the behaviour of move and Fn* traits 2020-08-08 15:57:17 +02:00
Alexis Bourget
6d77e40afe Move to intra-doc links in library/std/src/path.rs 2020-08-08 14:21:27 +02:00
bors
c989ac132a Auto merge of #74289 - lzutao:unroll, r=LukasKalbertodt 
Remove some redundant parts from `unrolled_find_u16s`

See each commit message for details.

r? @wesleywiser from old PR #67705 .
 2020-08-08 11:34:18 +00:00
Ivan Tham
4b15b809eb
Remove abmiguity from PathBuf pop example 2020-08-08 18:28:55 +08:00
Ivan Tham
b3ae88f6bb
Use assert! for Path exists example to check bool 2020-08-08 18:23:18 +08:00
Ivan Tham
9532b83912
Show Path extension example change multi extension 2020-08-08 18:14:29 +08:00
Ivan Tham
e7e41a8465
Add additonal case for Path starts with 
Show what happens if there is an extra extension
 2020-08-08 18:06:04 +08:00
Ivan Tham
6dffd2d18e
Separate example for Path strip_prefix 2020-08-08 18:01:34 +08:00
Ivan Tham
a11c27925d
Show relative example for Path ancestors 2020-08-08 17:53:16 +08:00
Alan Egerton
5792840bf5 Prevent __rust_begin_short_backtrace frames from being tail-call optimised away 2020-08-07 19:31:25 +01:00
Ivan Tham
06cf40f8a1
Show multi extension example for Path in doctests 2020-08-08 00:48:12 +08:00
Nazım Can Altınova
25545ed180
Only print the fields that are relevant to iterators for Debug of IntoKeys and IntoValues 2020-08-07 13:47:04 +02:00
Nazım Can Altınova
41dd4ee7ff
Add unit tests for new HashMap::into_{keys,values} methods 2020-08-07 13:13:41 +02:00
Nazım Can Altınova
e31116af50
Add into_{keys,values} methods for HashMap 2020-08-07 13:13:37 +02:00
bors
8b26609481 Auto merge of #70052 - Amanieu:hashbrown7, r=Mark-Simulacrum 
Update hashbrown to 0.8.1

This update includes:
- https://github.com/rust-lang/hashbrown/pull/146, which improves the performance of `Clone` and implements `clone_from`.
- https://github.com/rust-lang/hashbrown/pull/159, which reduces the size of `HashMap` by 8 bytes.
- https://github.com/rust-lang/hashbrown/pull/162, which avoids creating small 1-element tables.

Fixes #28481
 2020-08-07 08:36:15 +00:00
Amanieu d'Antras
d51b7b229a Update hashbrown to 0.8.1 2020-08-07 07:03:12 +01:00
Yuki Okushi
1b61fd3ccf
Rollup merge of #75179 - lzutao:unsed-ipv4-frominner, r=alexcrichton 
Remove unused FromInner impl for Ipv4Addr

The removed is a unused unstable implementation.
 2020-08-07 09:35:16 +09:00
Yuki Okushi
c9c7048038
Rollup merge of #75175 - lzutao:doctest-ipv4-fromu32, r=cuviper 
Make doctests of Ipv4Addr::from(u32) easier to read

There are many zeroes in `0x0d0c0b0au32` which makes it hard to read.
 2020-08-07 09:35:14 +09:00
Tomasz Miąsko
888bc07c6b Keep stdout open in limit_vector_count test 2020-08-06 00:00:00 +00:00
bors
c15bae53b5 Auto merge of #75086 - lzutao:u32const, r=oli-obk 
Use u32::from_ne_bytes to fix a FIXME and add comment about that

`u32::from_ne_bytes` has been const stable since 1.44.
 2020-08-06 14:21:48 +00:00
Adam Reichold
9073acdc98 Add fallback for cfg(unix) targets that do not define libc::_SC_IOV_MAX. 2020-08-05 17:15:08 +02:00
Adam Reichold
04a0114e7e Rely only on POSIX semantics for I/O vector count 
All #[cfg(unix)] platforms follow the POSIX standard and define _SC_IOV_MAX so
that we rely purely on POSIX semantics to determine the limits on I/O vector
count.
 2020-08-05 16:57:02 +02:00
Adam Reichold
87edccf0f0 Reduce synchronization overhead of I/O vector count memoization 2020-08-05 16:57:02 +02:00
Adam Reichold
6672f7be03 Memoize the I/O vector count limit 
Keep the I/O vector count limit in a `SyncOnceCell` to avoid the overhead of
repeatedly calling `sysconf` as these limits are guaranteed to not change during
the lifetime of a process by POSIX.
 2020-08-05 16:57:02 +02:00
Adam Reichold
9468752581 Query maximum vector count on Linux and macOS 
Both Linux and MacOS enforce limits on the vector count when performing vectored
I/O via the readv and writev system calls and return EINVAL when these limits
are exceeded. This changes the standard library to handle those limits as short
reads and writes to avoid forcing its users to query these limits using
platform specific mechanisms.
 2020-08-05 16:57:02 +02:00
Lzu Tao
d9f260e95e Remove unused FromInner impl for Ipv4Addr 2020-08-05 05:53:07 +00:00
Lzu Tao
725d37cae0 Make doctests of Ipv4Addr::from(u32) easier to read 2020-08-05 05:31:17 +00:00
Lzu Tao
30a1455c8d Use u32::from_ne_bytes to fix a FIXME 
Co-authored-by: Weiyi Wang <wwylele@gmail.com>
Co-authored-by: Adam Reichold <adam.reichold@t-online.de>
Co-authored-by: Josh Stone <cuviper@gmail.com>
Co-authored-by: Scott McMurray <scottmcm@users.noreply.github.com>
Co-authored-by: tmiasko <tomasz.miasko@gmail.com>
 2020-08-05 02:49:26 +00:00
Alexis Bourget
d243fa109f Fix the documentation for move about Fn traits implementations 2020-08-04 22:49:25 +02:00
Tim Diekmann
ab9362ad9a Replace Memoryblock with NonNull<[u8]> 2020-08-04 18:03:34 +02:00
Tim Diekmann
24ddf76ed7
Merge branch 'master' into remove-in-place-alloc 2020-08-03 02:18:20 +02:00
Manish Goregaokar
9471ab068c
Rollup merge of #75059 - shengsheng:typos, r=Dylan-DPC 
fix typos

Fix common misspellings with https://en.wikipedia.org/wiki/Wikipedia:Lists_of_common_misspellings/For_machines
 2020-08-02 13:08:47 -07:00
liuzhenyu
3b4151c9f3 fix typos 2020-08-02 23:20:00 +08:00