bootstrap: add `--json-output` for rust-analyzer
Motivation is that this allows us to customize rust-analyzer's "cargo watch" integration to run x.py. You simply have to set the command to run to be `x.py --json-output`
r? @Mark-Simulacrum -- feel free to make changes, this is quick and dirty for sure
Miri engine: stronger type-based sanity check for assignments
r? @oli-obk @eddyb
Fixes https://github.com/rust-lang/rust/issues/70405
That issue says
> be sure to also add appropriate mutability checks to the patterns (mutable for the source, immutable for the dest)
I decided not to do that because I see no good reason to do it. The engine does not care either way, the assignment will happen correctly.
Clean up rustdoc js testers
I realized after the improvement made by @ollie27 on the rustdoc-js-tester that a lot of code was actually duplicated. This PR intends to remove this duplication, making it simpler to update in case of future main.js updates.
r? @ollie27
cc @kinnison
Translate the virtual `/rustc/$hash` prefix back to a real directory.
Closes#53486 and fixes#53081, by undoing the remapping to `/rustc/$hash` on the fly, when appropriate (e.g. our testsuites, or user crates that depend on `libstd`), but not during the Rust build itself (as that could leak the absolute build directory into the artifacts, breaking deterministic builds).
Tested locally by setting `remap-debuginfo = true` in `config.toml`, which without these changes, was causing 56 tests to fail (see https://github.com/rust-lang/rust/issues/53081#issuecomment-606703215 for more details).
cc @Mark-Simulacrum @alexcrichton @ehuss
Rollup of 7 pull requests
Successful merges:
- #70487 (Stabilize float::to_int_unchecked)
- #70595 (Remove unused discriminant reads from MIR bodies)
- #70691 (Improve docs in `AllocRef`)
- #70694 (Use Self over specific type in return position)
- #70700 (Expand on platform details of `include_xxx` macros)
- #70708 (Fix typo in u8::to_ascii_uppercase and u8::to_ascii_lowercase)
- #70716 (Unerase regions in infer_placeholder_type)
Failed merges:
r? @ghost
Expand on platform details of `include_xxx` macros
This is a small detail that is not explicitly mentioned, but it left me scratching my head for a while until I looked into its implementation details. Maybe worth mentioning.
Remove unused discriminant reads from MIR bodies
Allow the `SimplifyLocals` pass to remove reads of discriminants if the
read is never used.
Fixes#70531
r? @oli-obk
Stabilize float::to_int_unchecked
This renames and stabilizes unsafe floating point to integer casts, which are intended to be the substitute for the currently unsound `as` behavior, once that changes to safe-but-slower saturating casts. As such, I believe this also likely unblocks #10184 (our oldest I-unsound issue!), as once this rolls out to stable it would be far easier IMO to change the behavior of `as` to be safe by default.
This does not stabilize the trait or the associated method, as they are deemed internal implementation details (and consumers should not, generally, want to expose them, as in practice all callers likely know statically/without generics what the return type is).
Closes#67058
Handle unterminated raw strings with no #s properly
The modified code to handle parsing raw strings didn't properly account for the case where there was no "#" on either end and erroneously reported this strings as complete. This lead to a panic trying to read off the end of the file.
Fixes#70677
r? @petrochenkov
cc @Centril
add `STILL_FURTHER_SPECIALIZABLE` flag
Contributes to #70285.
This PR adds a `STILL_FURTHER_SPECIALIZABLE` flag to `TypeFlags`
which replaces `needs_infer` and `needs_subst` in `Instance::resolve`
and `assemble_candidates_from_impls`.
r? @eddyb
Remove some reexports in `rustc_middle`
This will help get these imports out of the way of detecting the true dependencies in and out to `rustc_middle`, thereby helping future work towards https://github.com/rust-lang/rust/issues/65031.
Update cargo
8 commits in 8a0d4d9c9abc74fd670353094387d62028b40ae9..6e07d2dfb7fc87b1c9489de41da4dafa239daf03
2020-03-24 17:57:04 +0000 to 2020-03-31 03:22:39 +0000
- Fix man page typo for "Owner Options". (rust-lang/cargo#8057)
- enable progress bar on all UNIX platforms (rust-lang/cargo#8054)
- Squelch some rustdoc warnings. (rust-lang/cargo#8052)
- Remove clippy tests. (rust-lang/cargo#8053)
- Fix -Zfeatures=itarget with certain host dependencies (rust-lang/cargo#8048)
- Checking for binary that is built as an implicit dependency of an integration test. (rust-lang/cargo#8020)
- Use stabilized version of rustdoc's --crate-version (rust-lang/cargo#8039)
- Remove the `git-checkout` subcommand. (rust-lang/cargo#8040)
parse: recover on `const fn()` / `async fn()`
Recover on `const fn()` and `async fn()` function pointers, suggesting to remove the qualifier.
For example:
```
error: an `fn` pointer type cannot be `async`
--> $DIR/recover-const-async-fn-ptr.rs:6:11
|
LL | type T3 = async fn();
| -----^^^^^
| |
| `async` because of this
| help: remove the `async` qualifier
```
r? @estebank
