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Fix build failure in case file doesn't exist
It fixes the following issue:
```bash
$ ./x.py test src/tools/linkchecker ./build/x86_64-apple-darwin/doc/ --stage 1
Updating only changed submodules
Submodules updated in 0.05 seconds
Finished dev [unoptimized] target(s) in 0.15s
thread 'main' panicked at 'source "/Users/imperio/rust/rust/build/x86_64-apple-darwin/doc/version_info.html" failed to get metadata: No such file or directory (os error 2)', src/build_helper/lib.rs:179:19
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
failed to run: /Users/imperio/rust/rust/build/bootstrap/debug/bootstrap test src/tools/linkchecker ./build/x86_64-apple-darwin/doc/ --stage 1
Build completed unsuccessfully in 0:00:01
```
If the file doesn't exist, it makes sense anyway to just run the command in order to generate it.
r? @Mark-Simulacrum
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Make Allocation::bytes private
Fixes #62931.
Direct immutable access to the bytes is still possible but redirected through the new method `raw_bytes_with_undef_and_ptr`, similar to `get_bytes_with_undef_and_ptr` but without requiring an interpretation context and not doing *any* relocation or bounds checks. The `size` of the allocation is stored separately which makes access as `Size` and `usize` more ergonomic.
cc: @RalfJung
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Test that Wrapping arithmetic ops are implemented for all int types
Closes #49660
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remove the unstable rustdoc parameter --linker
use the code generation parameter -Clinker (same parameter as rustc)
to control what linker to use for building the rustdoc test executables.
closes: #63816
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Suggest call fn ctor passed as arg to fn with type param bounds
_Reviewer note: the relevant changes are in the second commit, the first is simple and mechanical, but verbose._
When forgetting to call a fn in an argument position to an fn that has a generic bound:
```rust
async fn foo() {}
fn bar(f: impl Future<Output=()>) {}
fn main() {
bar(foo); // <- should be `bar(foo());`
}
```
suggest calling it:
```
error[E0277]: the trait bound `fn() -> impl std::future::Future {foo}: std::future::Future` is not satisfied
--> $DIR/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:9:5
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LL | fn bar(f: impl Future<Output=()>) {}
| --------------------------------- required by `bar`
...
LL | bar(foo);
| ^^^ the trait `std::future::Future` is not implemented for `fn() -> impl std::future::Future {foo}`
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= help: it looks like you forgot to use parentheses to call the function: `foo()`
```
Fix #63100. Follow up to #63833 and #63337.
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Rollup of 5 pull requests
Successful merges:
- #63410 (Update BufWriter example to include call to flush())
- #64029 (Account for rounding errors when deciding the diagnostic boundaries)
- #64032 (rustdoc use -Ccodegen-units=1 by default for test compile)
- #64039 (Update sync condvar doc style)
- #64042 (Fix word repetition in str documentation)
Failed merges:
r? @ghost
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Fix word repetition in str documentation
Fixes a few repetitions of "like like" in the `trim*` methods documentation of `str`.
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Update sync condvar doc style
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rustdoc use -Ccodegen-units=1 by default for test compile
as the test is small we do not want split up in multiple codegen units
and also as there is multiple test running at the same time this
will reduce the number of concurrent threads
tested the test time with `./x.py test src/libcore --doc`
for my 16 core 32 thread cpu i get about 6% faster execution
and my 2 core 4 thread cpu I get about 10% faster execution
cc #63638
r? @Mark-Simulacrum
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Account for rounding errors when deciding the diagnostic boundaries
Fix Miri by fixing the bug raised in https://github.com/rust-lang/rust/pull/63402#discussion_r319485328.
Fixes https://github.com/rust-lang/rust/issues/64020
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Update BufWriter example to include call to flush()
I was playing with a writing a Huffman encoder/decoder and was getting weird corruptions and truncations. I finally realized it was was because `BufWriter` was swallowing write errors 😬. I've found Rust to generally be explicit and err on the safe side, so I definitely found this unintuitive and not "rustic".
https://twitter.com/johnterickson/status/1159514988123312128
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Kill borrows from assignments after generating new borrows
Closes #63719
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use the code generation parameter -Clinker (same parameter as rustc)
to control what linker to use for building the rustdoc test executables.
closes: #63816
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rustdoc: warn on empty doc test
Closes #60319.
A doc test that only contains whitespace should result in a warning.
This PR adds detection of empty doc tests to `check-code-block-syntax`, as having an invalid doc test is mutually exclusive with an empty doc test.
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This improves the clarity of the documentation a bit since they can
reference each other when reading the member docs in sequence.
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Fixes a few repetitions of "like like" in the `trim*` methods documentation of `str`.
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remove directory libstd/sys/vxworks/backtrace which is not used any more
r? @alexcrichton
cc @n-salim
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`improper_ctypes`: guard against accidental change to `Unique<T>`
r? @eddyb
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Properly account for left margin when setting terminal width through
CLI flag and don't trim code by default if we can't get the terminal's
dimensions.
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Update rustfmt to 1.4.6
This PR updates rustfmt to 1.4.6. [CHANGELOG](https://github.com/rust-lang/rustfmt/blob/v1.4.6/CHANGELOG.md#146-2019-08-28).
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Rollup of 7 pull requests
Successful merges:
- #62957 (Match the loop examples)
- #63600 (Merge oli-obk mail addresses)
- #63684 (Constify LinkedList new function)
- #63847 ([rustdoc] Fix system theme detection)
- #63999 (Add missing links on AsRef trait)
- #64014 ( miri: detect too large dynamically sized objects )
- #64015 (some const-eval test tweaks)
Failed merges:
r? @ghost
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some const-eval test tweaks
Best reviewed commit-by-commit.
r? @oli-obk
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miri: detect too large dynamically sized objects
Needed to make https://github.com/rust-lang/miri/pull/929 pass.
r? @oli-obk
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Add missing links on AsRef trait
cc @rust-lang/docs
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[rustdoc] Fix system theme detection
Fixes #63830
The problem is that it returns the property "entirely" (so with the quotes in our case). Removing them fixes the issue.
cc @fenhl
r? @kinnison
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Constify LinkedList new function
Change the `LinkedList::new()` function to become a const fn, allowing the use in constant context.
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Match the loop examples
The idea is to show the usefulness of the expression side by side.
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as the test is small we do not want split up in multiple codegen units
and also as there is multiple test running at the same time this
will reduce the number of concurrent threads
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When accessing private field of union, do not misidentify it as a struct
Fix incorrect error message when accessing private field of union.
Fixes #63976.
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Update Clippy
cc rust-lang/rust-clippy#4475
r? @oli-obk
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