Rollup of 6 pull requests
Successful merges:
- #84072 (Allow setting `target_family` to multiple values, and implement `target_family="wasm"`)
- #84744 (Add ErrorKind::OutOfMemory)
- #84784 (Add help message to suggest const for unused type param)
- #84811 (RustDoc: Fix bounds linking trait.Foo instead of traitalias.Foo)
- #84818 (suggestion for unit enum variant when matched with a patern)
- #84832 (Do not print visibility in external traits)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Do not print visibility in external traits
This PR fixes the bug that caused traits, which were re-exported, having visibility modifiers in front of methods, which is invalid.
It would be nice to add a test for this, but I don't even know if tests with multiple crates are possible.
Resolves#81274
Add ErrorKind::OutOfMemory
Ability to express `ENOMEM` as an `io::Error`.
I've used `OutOfMemory` as opposed to `NotEnoughMem` or `AllocationFailed`, because "OOM" is used in Rust already.
See also #84612
i8 and u8::to_string() specialisation (far less asm).
Take 2. Around 1/6th of the assembly to without specialisation.
https://godbolt.org/z/bzz8Mq
(partially fixes#73533 )
Fix debuginfo for generators
First, all fields except the discriminant (including `outer_fields`) should be put into structures inside the variant part, which gives an equivalent layout but offers us much better integration with debuggers.
Second, artificial flags in generator variants should be removed.
- Literally, variants are not artificial. We have `yield` statements, upvars and inner variables in the source code.
- Functionally, we don't want debuggers to suppress the variants. It contains the state of the generator, which is useful when debugging. So they shouldn't be marked artificial.
- Debuggers may use artificial flags to find the active variant. In this case, marking variants artificial will make debuggers not work properly.
Fixes#62572.
Fixes#79009.
And refer https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/Debuginfo.20for.20generators.
`Conf` macro improvements
changelog: Allow `default_trait_access` in macros
Mainly this is a change to use serde as in [Manually implementing Deserialize for a struct](https://serde.rs/deserialize-struct.html), which opens the door for a cleaner implementation overall.
* Allow `default_trait_access` in macros (tangential, but used in this PR)
* Deserialize into `TryConf { conf, errors }` instead of using a global `ERRORS` variable.
* Improve the `define_Conf!` macro
* Remove the redundant string literal `(name, "name", ..)`
* Support deprecated configs with `#[conf_deprecated(message)]`. Message shows in error.
* Make the default value optional. Use `Default::default()` if omitted.
* Invalid config value error now shows the key (see test output)
* Cleaner `impl Default for Conf` (no `toml::from_str("")`)
Remove dead code in `rustc_session::Options`
- Don't recompile the same functions for each debugging option
This reduces the amount of items in the crate by quite a lot.
- Remove unused `parse_opt_list` and `parse_pathbuf_push` functions
- Remove unused macro parameters
- Remove `allow(dead_code)`.
