Rollup of 6 pull requests #72612
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Rollup of 6 pull requests #72612
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Use raw pointers to avoid making any assertions about the data field.
This will print a diagnostic for crates which are mentioned as `--extern` arguments on the command line, but are never referenced from the source. This diagnostic is controlled by `-Wunused-crate-dependencies` or `#![warn(unused_crate_dependencies)]` and is "allow" by default. There are cases where certain crates need to be linked in but are not directly referenced - for example if they are providing symbols for C linkage. In this case the warning can be suppressed with `use needed_crate as _;`. Thanks to @petrochenkov for simplified core. Resolves issue rust-lang#57274
Co-authored-by: Oliver Scherer <[email protected]>
Warn about unused crate deps Implements rust-lang#57274 by adding -Wunused-crate-dependencies. This will warn about any `--extern` option on the command line which isn't referenced by the crate source either via `use` or `extern crate`. Crates which are added for some side effect but are otherwise unreferenced - such as for symbols they define - the warning can be suppressed with `use somecrate as _;`. If a crate has multiple aliases (eg using `foo = { package = "bar" }` in `Cargo.toml`), then it will warn about each unused alias. This does not consider crate added by some other means than `--extern`, including the standard library. It also doesn't consider any crate without `add_prelude` set (though I'm not sure about this). Unfortunately this probably [does not yet work well with Cargo](rust-lang#57274 (comment)) as it will over-specify crates, causing spurious warnings. As a result, this lint is "allow" by default and must be explicitly enabled either via `#![warn(unused_crate_deps)]` or with `-Wunused-crate-deps`.
Resolve UB in Arc/Weak interaction (2) Use raw pointers to avoid making any assertions about the data field. Follow up from rust-lang#72479, see that PR for more detail on the motivation. @RalfJung I was able to avoid a lot of the changes to `Weak`, by making a helper type (`WeakInner`) - because of auto-deref and because the fields have the same name, the rest of the code continues to compile.
…eled-block, r=davidtwco Allow unlabeled breaks from desugared `?` in labeled blocks `?` is desugared into a `break` targeting the innermost `try` scope in which it resides. The `break` however will not have a label. https://github.com/rust-lang/rust/blob/master/src/librustc_ast_lowering/expr.rs#L1560 Since the `target` of the `break` is known, the compiler should not complain about an unlabeled jump for `break`s desugared from `?`. Closes rust-lang#72483
Update books ## reference 7 commits in 892b928b565e35d25b6f9c47faee03b94bc41489..becdca9477c9eafa96a4eea5156fe7a2730d9dd2 2020-05-11 11:13:51 -0700 to 2020-05-21 21:08:02 +0100 - Update tuple index token. (rust-lang/reference#814) - Fixes minor errors (rust-lang/reference#818) - Update that macros can be deprecated. (rust-lang/reference#813) - work on char/str descriptions (rust-lang/reference#809) - cfg_attr needs a valid predicate (rust-lang/reference#812) - Account for removal of UB in float-to-int casts (rust-lang/reference#810) - Fix stray plus signs. (rust-lang/reference#811) ## book 6 commits in 6247be15a7f7509559f7981ee2209b9e0cc121df..e8a4714a9d8a6136a59b8e63544e149683876e36 2020-05-03 10:55:09 -0500 to 2020-05-25 10:29:27 -0500 - code is 1024 now, not 512 - Clean up install a bit - We don't need build.sh anymore - Fix CI status in README - Port to github actions (rust-lang/book#2337) - operating system -> allocator ## rust-by-example 5 commits in ab072b14393cbd9e8a1d1d75879bf51e27217bbb..7aa82129aa23e7e181efbeb8da03a2a897ef6afc 2020-05-09 08:46:39 -0300 to 2020-05-25 14:54:26 -0300 - Person of age 0 is alive (rust-lang/rust-by-example#1348) - Gramatical fix in std/rc.md (rust-lang/rust-by-example#1347) - Capture example should use String (rust-lang/rust-by-example#1331) - Fix empty bound examples (rust-lang/rust-by-example#1343) - Fix an inline comment in macros/repeat.md (rust-lang/rust-by-example#1344) ## edition-guide 1 commits in 49270740c7a4bff2763e6bc730b191d45b7d5167..0a8ab5046829733eb03df0738c4fafaa9b36b348 2020-05-11 08:50:29 -0500 to 2020-05-18 08:34:23 -0500 - Changes for Rust 1.32 & setup for edition-next (rust-lang/edition-guide#213) ## embedded-book 3 commits in 366c50a03bed928589771eba8a6f18e0c0c01d23..5555a97f04ad7974ac6fb8fb47c267c4274adf4a 2020-05-07 09:04:42 +0000 to 2020-05-25 18:00:51 +0000 - Remove reference to const-fn feature of cortex-m. Closes rust-embedded/book#242. (rust-embedded/book#243) - Spelling: Appplication -> Application (rust-embedded/book#241) - QEMU debugging updates (rust-embedded/book#239)
…an-DPC Add working example for E0617 explanation r? @Dylan-DPC
Eagerly lower asm sub-expressions to HIR even if there is an error Fixes rust-lang#72570 r? @oli-obk
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@bors r+ rollup=never p=5 |
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📌 Commit 06e3a1d has been approved by |
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⌛ Testing commit 06e3a1d with merge e79727c26d40f2bb49d3fd5f468509f4a6b615d4... |
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💔 Test failed - checks-azure |
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Left a comment on the PR that caused the failure, closing. |
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Successful merges:
?in labeled blocks #72581 (Allow unlabeled breaks from desugared?in labeled blocks)Failed merges:
r? @ghost