This commit removes many unnecessary `unsafe impl` blocks as well as pushing the
needed implementations to the lowest level possible. I noticed that the bounds
for `RwLock` are a little off when reviewing #22574 and wanted to ensure that we
had our story straight on these implementations.
The recent commit on liblibc for nacl break the compilation for OpenBSD (and Bitrig too, I think).
The problem is `ino_t` come from another block too now. This patch remove the extra declaration.
```
.../src/liblibc/lib.rs:98:9: 98:37 error: a type named `ino_t` has already been imported in this module [E0251]
.../src/liblibc/lib.rs:98 pub use types::os::arch::posix01::*;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: aborting due to previous error
```
@dhuseby do you have this problem too ? and if yes, does this patch correct it ?
Two changes:
1. Make traits with assoc types invariant w/r/t their inputs.
2. Fully normalize parameter environments, including any region variables (which were being overlooked).
The former supports the latter, but also just seems like a reasonably good idea.
Fixes#21750
cc @edwardw
r? @pnkfelix
I tried to follow [the style guide][1] as much as possible. This is just from some random readings of the code, so no guarantees on completeness, even in the edited files.
[1]: http://aturon.github.io/style/README.html
This affects the `set_non_blocking` function which cannot fail for Unix or
Windows, given correct parameters. Additionally, the short UDP write error case
has been removed as there is no such thing as \"short UDP writes\", instead, the
operating system will error out if the application tries to send a packet
larger than the MTU of the network path.
Tests often use `vec![1, 2, 3]` instead of shorter and faster `[1, 2, 3]`.
This patch removes a lot of unnecessary `vec!`s. Hopefully, the tests will compile and run a bit faster.
Adds `<module::Type>::method` support and makes `module::Type::method` a shorthand for it.
This is most of #16293, except that chaining multiple associated types is not yet supported.
It also fixes#22563 as `impl`s are no longer treated as modules in resolve.
Unfortunately, this is still a *[breaking-change]*:
* If you used a global path to a primitive type, i.e. `::bool`, `::i32` etc. - that was a bug I had to fix.
Solution: remove the leading `::`.
* If you passed explicit `impl`-side type parameters to an inherent method, e.g.:
```rust
struct Foo<T>(T);
impl<A, B> Foo<(A, B)> {
fn pair(a: A, b: B) -> Foo<(A, B)> { Foo((a, b)) }
}
Foo::<A, B>::pair(a, b)
// Now that is sugar for:
<Foo<A, B>>::pair(a, b)
// Which isn't valid because `Foo` has only one type parameter.
// Solution: replace with:
Foo::<(A, B)>::pair(a, b)
// And, if possible, remove the explicit type param entirely:
Foo::pair(a, b)
```
* If you used the `QPath`-related `AstBuilder` methods @hugwijst added in #21943.
The methods still exist, but `QPath` was replaced by `QSelf`, with the actual path stored separately.
Solution: unpack the pair returned by `cx.qpath` to get the two arguments for `cx.expr_qpath`.
