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Rollup merge of #41035 - jmesmon:revert-bad-raw-fd-impls, r=aturon

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Revert "Implement AsRawFd/IntoRawFd for RawFd"

This reverts commit 2cf686f2cd (#40842)

RawFd is a type alias for c_int, which is itself a type alias for i32.
As a result, adding AsRawFd and IntoRawFd impls for RawFd actually adds
them for i32.

As a result, the reverted commit makes this valid:

```
use std::os::unix::io::AsRawFd;

fn arf<T: AsRawFd>(_: T) {}

fn main() {
    arf(32i32)
}
```

Implimenting AsRawFd and IntoRawFd for i32 breaks the promises of both
those traits that their methods return a valid RawFd.

r? @aturon
cc @Mic92 @kamalmarhubi
This commit is contained in:
Corey Farwell 2017-04-05 12:44:35 -04:00 committed by GitHub
commit 6251e4bb35
1 changed files with 0 additions and 15 deletions
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15
src/libstd/sys/unix/ext/io.rs
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@ -72,13 +72,6 @@ pub trait IntoRawFd {
fn into_raw_fd(self) -> RawFd;
}
#[stable(feature = "rust1", since = "1.0.0")]
impl AsRawFd for RawFd {
fn as_raw_fd(&self) -> RawFd {
*self
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl AsRawFd for fs::File {
fn as_raw_fd(&self) -> RawFd {
@ -91,14 +84,6 @@ unsafe fn from_raw_fd(fd: RawFd) -> fs::File {
fs::File::from_inner(sys::fs::File::from_inner(fd))
}
}
#[stable(feature = "into_raw_os", since = "1.4.0")]
impl IntoRawFd for RawFd {
fn into_raw_fd(self) -> RawFd {
self
}
}
#[stable(feature = "into_raw_os", since = "1.4.0")]
impl IntoRawFd for fs::File {
fn into_raw_fd(self) -> RawFd {