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And mark the new methods as unstable.
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Closes #30156.
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Tracking issue: #30014
This implements the RFC and makes a few other changes.
I have added a few extra tests, and made the Windows and
Unix code as similar as possible.
Part of the RFC mentions the unstable OpenOptionsExt trait
on Windows (see #27720). I have added a few extra methods
to future-proof it for CreateFile2.
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Michael Ellerman pointed out that the system call for getrandom()
on PowerPC Linux is incorrect. This bug was in the powerpc32 port,
and was carried over to the powerpc64 port too.
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This adds support for big endian and little endian PowerPC64.
make check runs clean apart from one big endian backtrace issue.
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In 8d90d3f36871a00023cc1f313f91e351c287ca15 `BufStream`, the only
consumer of `InternalBufWriter`, was removed. As implied by the name,
this type is private, hence it is currently dead code.
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… per aturon’s proposal.
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I also re-enabled the use of `#[thread_local]` on AArch64. It was originally disabled in the PR that introduced AArch64 (#19790), but the reasons for this were not explained. `#[thread_local]` seems to work fine in my tests on AArch64, so I don't think this should be an issue.
cc @alexcrichton @akiss77
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`siginfo_si_addr()` function is used once, and the returned value is
casted to `usize`. So make the function returns a `usize`.
it simplifies OpenBSD case, where the return type wouldn't be a `*mut
libc::c_void` but a `*mut libc::c_char`.
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use the `getentropy()` function instead of `syscall()` and
syscall-numbers.
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* If the requested descriptors to inherit are stdio descriptors there
are situations where they will not be set correctly
* Example: parent's stdout --> child's stderr
parent's stderr --> child's stdout
* Solution: if the requested descriptors for the child are stdio
descriptors, `dup` them before overwriting the child's stdio
Example of a program which exhibits the bug:
```rust
// stdio.rs
use std::io::Write;
use std::io::{stdout, stderr};
use std::process::{Command, Stdio};
use std::os::unix::io::FromRawFd;
fn main() {
stdout().write_all("parent stdout\n".as_bytes()).unwrap();
stderr().write_all("parent stderr\n".as_bytes()).unwrap();
Command::new("sh")
.arg("-c")
.arg("echo 'child stdout'; echo 'child stderr' 1>&2")
.stdin(Stdio::inherit())
.stdout(unsafe { FromRawFd::from_raw_fd(2) })
.stderr(unsafe { FromRawFd::from_raw_fd(1) })
.status()
.unwrap_or_else(|e| { panic!("failed to execute process: {}", e) });
}
```
Before:
```
$ rustc --version
rustc 1.7.0-nightly (8ad12c3e2 2015-12-19)
$ rustc stdio.rs && ./stdio >out 2>err
$ cat out
parent stdout
$ cat err
parent stderr
child stdout
child stderr
```
After (expected):
```
$ rustc --version
rustc 1.7.0-dev (712eccee2 2015-12-19)
$ rustc stdio.rs && ./stdio >out 2>err
$ cat out
parent stdout
child stderr
$ cat err
parent stderr
child stdout
```
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closes #30657
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See rust-lang/rfcs#1413.
r? @alexcrichton
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f64 methods have been stable since rust 1.0, but f32 never got stabilised.
I suggest backporting this to beta as well (needs changing stablilisation version then).
r? @aturon
Fixes https://github.com/rust-lang/rfcs/issues/1438
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f64 methods have been stable since rust 1.0, but f32 never got stabilised.
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When looking in the documentation I often scan the examples the first thing I do. In these 3 cases it's not obvious which direction the operation happens by adding this comment it makes it more obvious.
r? @steveklabnik
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Are trait impls still insta-stable? Considering that this design has been around for a long time on `String` and `OsString` it probably doesn't matter much...
The `From` impl is a bit strange to me. It's stolen from `OsString` but I'm not really sure about it... `String` just impls `From<&str>` instead, would that make more sense?
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Resolves #30507
r? @steveklabnik
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This PR siliences some warnings when compiling stdlib with --test. Mostly remove some unused imports and added a few `#[allow(..)]`.
I also marked some signal handling functions with `#[cfg(not(test))]`, because they are only called through `rt::lang_start`, which is also marked as `#[cfg(not(test))]`
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