Rollup of 7 pull requests
Successful merges:
- #67722 (Minor: note how Any is an unsafe trait in SAFETY comments)
- #68586 (Make conflicting_repr_hints a deny-by-default c-future-compat lint)
- #68598 (Fix null synthetic_implementors error)
- #68603 (Changelog: Demonstrate final build-override syntax)
- #68609 (Set lld flavor for MSVC to link.exe)
- #68611 (Correct ICE caused by macros generating invalid spans.)
- #68627 (Document that write_all will not call write if given an empty buffer)
Failed merges:
r? @ghost
Document that write_all will not call write if given an empty buffer
Some types of Write instances have a semantic meaning associated with
writing an empty buffer, such as sending an empty packet. This works
when calling `write` directly, and supplying an empty buffer. However,
calling `write_all` on an empty buffer will simply never call `write`,
because `write_all` assumes it has no work to do.
Document this behavior, to help prospective users of
datagram-packet-style Write instances.
Set lld flavor for MSVC to link.exe
This enables linking with LLD on Windows with just `-C linker=rust-lld` instead of needing `-C linker=rust-lld -C linker-flavor=lld-link`.
Minor: note how Any is an unsafe trait in SAFETY comments
Motivation: helpful to people like myself reading the standard library source to better understand how to use Any, especially if we do go ahead with https://github.com/rust-lang/rust/pull/67562 and make it an unsafe trait.
Detect use-after-scope bugs with AddressSanitizer
Enable use-after-scope checks by default when using AddressSanitizer.
They allow to detect incorrect use of stack objects after their scope
have already ended. The detection is based on LLVM lifetime intrinsics.
To facilitate the use of this functionality, the lifetime intrinsics are
now emitted regardless of optimization level if enabled sanitizer makes
use of them.
Some types of Write instances have a semantic meaning associated with
writing an empty buffer, such as sending an empty packet. This works
when calling `write` directly, and supplying an empty buffer. However,
calling `write_all` on an empty buffer will simply never call `write`,
because `write_all` assumes it has no work to do.
Document this behavior, to help prospective users of
datagram-packet-style Write instances.
Update links to WASI docs in time.rs module
Since the docs for the WASI API are now evolving in [WebAssembly/WASI] repo,
I thought it might be useful to update the links in the docs to point to that location
instead of using the outdated `CraneStation/wasmtime` destination.
[WebAssembly/WASI]: https://github.com/WebAssembly/WASI
r? @steveklabnik
cc @alexcrichton
rustdoc: Fix re-exporting primitive types
* Generate links to the primitive type docs for re-exports.
* Don't ICE on cross crate primitive type re-exports.
* Make primitive type re-exports show up cross crate.
Fixes#67646Closes#67972
r? @GuillaumeGomez
Don't ICE on path-collision in dep-graph
Collisions in the dep-graph due to path-reuse are rare but can occur.
So, instead of ICE'ing, just fail to mark green in such cases (for `DepKind::{Hir, HirBody, CrateMetadata}`).
Fix#62649.
Since the docs for the WASI API are now evolving in [WebAssembly/WASI] repo,
I thought it might be useful to update the links in the docs to point to that location
instead of using the outdated `CraneStation/wasmtime` destination.
[WebAssembly/WASI]: https://github.com/WebAssembly/WASI
compiletest: Unit tests for `EarlyProps` (+ small cleanup)
* Parse `EarlyProps` from a reader
* Add unit tests for `EarlyProps`
* Remove unused `llvm-cxxflags` option
* Remove unnecessary memory allocations in `iter_header`
* Update mode list displayed in `--help`
This patch enables rustc to emit the required LLVM module flags to enable Control Flow Guard metadata (cfguard=1) or metadata and checks (cfguard=2). The LLVM module flags are ignored on unsupported targets and operating systems.
