bors [Mon, 13 Jan 2020 12:49:12 +0000 (12:49 +0000)]
Auto merge of #67850 - GuillaumeGomez:err-codes-checkup, r=Mark-Simulacrum
Error codes checkup and rustdoc test fix
This PR does a few things:
* fix how rustdoc checks that an error code has been thrown (it only checked for "E0XXX" so if it appeared in the output because the file has it in its name or wherever, it passed the test, which was incorrect)
* fix the failing code examples that weren't throwing the expected error code
Aaron Hill [Mon, 6 Jan 2020 03:32:53 +0000 (22:32 -0500)]
Don't run const propagation on items with inconsistent bounds
Using `#![feature(trivial_bounds)]`, it's possible to write functions
with unsatisfiable 'where' clauses, making them uncallable. However, the
user can act as if these 'where' clauses are true inside the body of the
function, leading to code that would normally be impossible to write.
Since const propgation can run even without any user-written calls to a
function, we need to explcitly check for these uncallable functions.
bors [Mon, 13 Jan 2020 08:20:49 +0000 (08:20 +0000)]
Auto merge of #68174 - JohnTitor:rollup-ix4amrj, r=JohnTitor
Rollup of 8 pull requests
Successful merges:
- #67313 (Document more use cases of dataflow)
- #67959 (rustdoc: improve stability mark arrows)
- #68097 (Specify units for test timeout environment variables)
- #68135 (restore some rustc_parse visibilities for rustfmt)
- #68145 (Expose `context::CheckLintNameResult`)
- #68156 (Fix crate paths in comments)
- #68157 (Clean up E0186 explanation)
- #68161 (Fix system call docs for time::Instant)
Yuki Okushi [Mon, 13 Jan 2020 07:44:24 +0000 (16:44 +0900)]
Rollup merge of #68161 - ruuda:fix-instant-docs, r=rkruppe
Fix system call docs for time::Instant
The link for UNIX was pointing to the Cloud ABI docs. It should have been pointing to the `clock_gettime` docs instead. A similar table is repeated in the docs for `SystemTime`, but there the UNIX entry was already correct.
Yuki Okushi [Mon, 13 Jan 2020 07:44:18 +0000 (16:44 +0900)]
Rollup merge of #68135 - calebcartwright:rustc-parse-visibilities, r=Centril
restore some rustc_parse visibilities for rustfmt
In https://github.com/rust-lang/rust/pull/65495/commits/c189565edc5c9fc516170885b3a3061b936205fb some visibilities were reduced on the parse mod (which now resides in the rustc_parse crate) as part of some refactoring and splitting up of libsyntax. However, rustfmt needs access to a few of those items that are no longer visible.
This restores the visibility on those items rustfmt depends on.
The link for UNIX was pointing to the Cloud ABI docs. It should have
been pointing to the clock_gettime docs instead. The table is repeated
in the docs for SystemTime, but there the UNIX entry was already correct.
bors [Sun, 12 Jan 2020 02:28:48 +0000 (02:28 +0000)]
Auto merge of #68142 - Centril:rollup-dl232e9, r=Centril
Rollup of 6 pull requests
Successful merges:
- #67494 (Constify more of alloc::Layout)
- #67867 (Correctly check for opaque types in `assoc_ty_def`)
- #67948 (Galloping search for binary_search_util)
- #68045 (Move more of `rustc::lint` into `rustc_lint`)
- #68089 (Unstabilize `Vec::remove_item`)
- #68108 (Add suggestions when encountering chained comparisons)
Rollup merge of #68108 - varkor:chained-comparison-suggestions, r=Centril
Add suggestions when encountering chained comparisons
Ideally, we'd also prevent the type error, which is just extra noise, but that will require moving the error from the parser, and I think the suggestion makes things clear enough for now.
Rollup merge of #68045 - Centril:liberate-lints, r=Mark-Simulacrum
Move more of `rustc::lint` into `rustc_lint`
Based on https://github.com/rust-lang/rust/pull/67806.
Here we try to consolidate more of the linting infra into `rustc::lint`. Some high-level notes:
- We now store an `Lrc<dyn Any + Send + Sync>` as opposed to `Lrc<LintStore>` in the `GlobalCtxt`. This enables us to avoid referring to the type, breaking a cyclic dependency, and so we can move things from `rustc::lint` to `rustc_lint`.
- `in_derive_expansion` is, and needs to, be moved as a method on `Span`.
- We reduce the number of ways on `tcx` to emit a lint so that the developer UX is more streamlined.
- `LintLevelsBuilder` is moved to `rustc_lint::levels`, leaving behind `LintLevelMap/Set` in a purified form due to current constraints (hopefully fixable in the future after https://github.com/rust-lang/rust/pull/68133).
- `struct_lint_level` is moved to `rustc::lint` due to current dependency constraints.
- `rustc::lint::context` is moved to `rustc_lint::context`.
- The visitors in `rustc::lint` are moved to `rustc_lint::passes`.
Rollup merge of #67494 - lukaslueg:const_alloc, r=oli-obk
Constify more of alloc::Layout
Making more methods of `alloc::Layout` const would allow us to compute alignment/size information for arbitrary (sized) types at compile-time, including placing the information in associated constants. While `mem::size_of` and `mem::align_of` are already const and `Layout` is solely based on those, there is no guarantee in the implementation that a const derived from these functions will be exactly the same as what `Layout` uses and is subsequently used in a call to `alloc::alloc`. Constifying `Layout` makes this possible.
Rollup merge of #68120 - Centril:ban-range-to-dotdotdot, r=oli-obk
Ban `...X` pats, harden tests, and improve diagnostics
Follow up to https://github.com/rust-lang/rust/pull/67258#issuecomment-565656155 and https://github.com/rust-lang/rust/pull/67258#discussion_r357879932.
Rollup merge of #68114 - ecstatic-morse:fix-feature-gating, r=Centril
Don't require `allow_internal_unstable` unless `staged_api` is enabled.
#63770 changed `qualify_min_const_fn` to require `allow_internal_unstable` for *all* crates that used an unstable feature, regardless of whether `staged_api` was enabled or the `fn` that used that feature was stably const. In practice, this meant that every crate in the ecosystem that wanted to use nightly features added `#![feature(const_fn)]`, which skips `qualify_min_const_fn` entirely.
After this PR, crates that do not have `#![feature(staged_api)]` will only need to enable the feature they are interested in. For example, `#![feature(const_if_match)]` will be enough to enable `if` and `match` in constants. Crates with `staged_api` (e.g., `libstd`) require `#[allow_internal_unstable]` to be added to a function if it uses nightly features unless that function is also marked `#[rustc_const_unstable]`. This prevents proliferation of `#[allow_internal_unstable]` into functions that are not callable in a `const` context on stable.
Rollup merge of #68018 - petrochenkov:nosoft, r=Centril
feature_gate: Remove `GateStrength`
The "soft feature gating" from `feature_gate/check.rs` is unused, and even if it were used, hardcoded warning is not a good solution and [deny-by-default lint](https://github.com/rust-lang/rust/issues/64266) would be a better way to do this.
cc https://github.com/rust-lang/rust/pull/67806#discussion_r363091701
r? @Centril
Rollup merge of #67889 - Zoxc:parallel-cgus, r=michaelwoerister
Compile some CGUs in parallel at the start of codegen
This brings the compilation time for `syntex_syntax` from 11.542s to 10.453s with 6 threads in non-incremental debug mode. Just compiling `n` CGUs in parallel at the beginning of codegen seems sufficient to get rid of the staircase effect, at least for `syntex_syntax`.
Based on https://github.com/rust-lang/rust/pull/67777.
r? @michaelwoerister
cc @alexcrichton @Mark-Simulacrum
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