r? @steveklabnik
Closes#22698
I wasn't sure that this was appropriate for the book, but I've added this to the reference. I also noticed that one of the U+ symbols in the character literals section was missing the graves.
Fixes#21370.
`unused-macro-with-follow-violation.rs` was already handled correctly. That test is just for good measure. :)
I have a more involved plan to clean this up, but it ran into difficulties such as #22814.
Ensure we do not zero when \"moving\" types that are Copy.
Uses more precise `type_needs_drop` for deciding about emitting cleanup code. Added notes about the weaknesses regarding `ty::type_contents` here.
Fix#22536
We were recording stability attributes applied to fields in the
compiler, and even annotating it in the libs, but the compiler didn't
actually do the checks to give errors/warnings in user crates.
Details in the commit messages.
Implements `Debug` for `RwLock` and `arc::Weak` in the same way it is implemented for `rc::Weak` (basically copy & paste).
The lack of this implementation prevents the automatic implementation of `Debug` for structs containing members of these types.
rustdoc impl item did not include default methods for local crates, but did include them for external crates. This resulted in duplicate methods. Fix so that impl item does not include default methods for external crates.
Fix#22595.
The stability check checks the `PublicItems` map when giving errors if
there is a #[stable] item with a public contents that doesn't not have
its own stability. Without recording this, struct fields and enum
variants will not get errors for e.g. stable modules with unmarked
functions internally.
This is just improving the compiler's precision to give the standard
library developers more information earlier.
E.g.
#![staged_api]
#![feature(staged_api)]
#![crate_type = "lib"]
#[stable(feature = "rust1", since = "1.0.0")]
pub struct Foo {
pub x: i32
}
#[stable(feature = "rust1", since = "1.0.0")]
pub mod bar {
pub fn baz() {}
}
Without the patch it gives:
test.rs:12:5: 12:20 error: This node does not have a stability attribute
test.rs:12 pub fn baz() {}
^~~~~~~~~~~~~~~
error: aborting due to previous error
With the patch it gives:
test.rs:7:9: 7:15 error: This node does not have a stability attribute
test.rs:7 pub x: i32
^~~~~~
test.rs:12:5: 12:20 error: This node does not have a stability attribute
test.rs:12 pub fn baz() {}
^~~~~~~~~~~~~~~
error: aborting due to 2 previous errors
We were recording stability attributes applied to fields in the
compiler, and even annotating it in the libs, but the compiler didn't
actually do the checks to give errors/warnings in user crates.
Avoid `cat_expr Erred` notes when already in error state.
Also, to ensure we do not let the dropck get skipped, ICE if `cat_expr` errors when *not* in error state.
This is not known to be a breaking change (i.e. I do not know of a current case that causes the new ICE to be exercised).
Fix#22265
If the filename for a path is `None` then we know that the creation of the
parent directory created the whole path so there's no need to retry the call to
`create_dir`.
Closes#22737
Specifically, the following actions were takend:
* The `copy_memory` and `copy_nonoverlapping_memory` functions
to drop the `_memory` suffix (as it's implied by the functionality). Both
functions are now marked as `#[stable]`.
* The `set_memory` function was renamed to `write_bytes` and is now stable.
* The `zero_memory` function is now deprecated in favor of `write_bytes`
directly.
* The `Unique` pointer type is now behind its own feature gate called `unique`
to facilitate future stabilization.
[breaking-change]
This commit moves `std::env` away from the `std::old_io` error type as well as
the `std::old_path` module. Methods returning an error now return `io::Error`
and methods consuming or returning paths use `std::path` instead of
`std::old_path`. This commit does not yet mark these APIs as `#[stable]`.
This commit also migrates `std::old_io::TempDir` to `std::fs::TempDir` with
essentially the exact same API. This type was added to interoperate with the new
path API and has its own `tempdir` feature.
Finally, this commit reverts the deprecation of `std::os` APIs returning the old
path API types. This deprecation can come back once the entire `std::old_path`
module is deprecated.
[breaking-change]
