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These are semantically the same, but `find_map()` is more concise.
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tidy: change msdn links to newer locations
see accouncement at https://docs.microsoft.com/welcome-to-docs
The script that I used: https://gist.github.com/lzutao/1449c9210ad91899841d62e0058d2caa
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see accouncement at https://docs.microsoft.com/welcome-to-docs
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`description` has been documented as soft-deprecated since 1.27.0 (17
months ago). There is no longer any reason to call it or implement it.
This commit:
- adds #[rustc_deprecated(since = "1.41.0")] to Error::description;
- moves description (and cause, which is also deprecated) below the
source and backtrace methods in the Error trait;
- reduces documentation of description and cause to take up much less
vertical real estate in rustdocs, while preserving the example that
shows how to render errors without needing to call description;
- removes the description function of all *currently unstable* Error
impls in the standard library;
- marks #[allow(deprecated)] the description function of all *stable*
Error impls in the standard library;
- replaces miscellaneous uses of description in example code and the
compiler.
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Since its inception rustbuild has always worked in three stages: one for
libstd, one for libtest, and one for rustc. These three stages were
architected around crates.io dependencies, where rustc wants to depend
on crates.io crates but said crates don't explicitly depend on libstd,
requiring a sysroot assembly step in the middle. This same logic was
applied for libtest where libtest wants to depend on crates.io crates
(`getopts`) but `getopts` didn't say that it depended on std, so it
needed `std` built ahead of time.
Lots of time has passed since the inception of rustbuild, however,
and we've since gotten to the point where even `std` itself is depending
on crates.io crates (albeit with some wonky configuration). This
commit applies the same logic to the two dependencies that the `test`
crate pulls in from crates.io, `getopts` and `unicode-width`. Over the
many years since rustbuild's inception `unicode-width` was the only
dependency picked up by the `test` crate, so the extra configuration
necessary to get crates building in this crate graph is unlikely to be
too much of a burden on developers.
After this patch it means that there are now only two build phasese of
rustbuild, one for libstd and one for rustc. The libtest/libproc_macro
build phase is all lumped into one now with `std`.
This was originally motivated by rust-lang/cargo#7216 where Cargo was
having to deal with synthesizing dependency edges but this commit makes
them explicit in this repository.
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rustbuild
Remove some random unnecessary lint `allow`s
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This reverts commit 3eb4890dfe6db0279fdd3cda19f9643873ae3db9, reversing
changes made to 7a4df3b53da369110984a2b57419c05a53e33b38.
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Cosmetic improvements to doc comments
This has been factored out from https://github.com/rust-lang/rust/pull/58036 to only include changes to documentation comments (throughout the rustc codebase).
r? @steveklabnik
Once you're happy with this, maybe we could get it through with r=1, so it doesn't constantly get invalidated? (I'm not sure this will be an issue, but just in case...) Anyway, thanks for your advice so far!
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Co-authored-by: nikomatsakis
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Prefer to_string() to format!()
Simple benchmarks suggest in some cases it can be faster by even 37%:
```
test converting_f64_long ... bench: 339 ns/iter (+/- 199)
test converting_f64_short ... bench: 136 ns/iter (+/- 34)
test converting_i32_long ... bench: 87 ns/iter (+/- 16)
test converting_i32_short ... bench: 87 ns/iter (+/- 49)
test converting_str ... bench: 54 ns/iter (+/- 15)
test formatting_f64_long ... bench: 349 ns/iter (+/- 176)
test formatting_f64_short ... bench: 145 ns/iter (+/- 14)
test formatting_i32_long ... bench: 98 ns/iter (+/- 14)
test formatting_i32_short ... bench: 93 ns/iter (+/- 15)
test formatting_str ... bench: 86 ns/iter (+/- 23)
```
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These were stabilized in March 2018's #47813, and are the Preferred Way
to Do It going forward (q.v. #51043).
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This permits easier iteration without having to worry about warnings
being denied.
Fixes #49517
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Fixes #41701.
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Like #43008 (f668999), but _much more aggressive_.
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Remove couple of unnecessary `#![feature(staged_api)]`.
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These are now no longer necessary with `-Z force-unstable-if-unmarked`
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As of last year with version 'Sierra', the Mac operating system is now
called 'macOS'.
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Remove not(stage0) from deny(warnings)
Historically this was done to accommodate bugs in lints, but there hasn't been a
bug in a lint since this feature was added which the warnings affected. Let's
completely purge warnings from all our stages by denying warnings in all stages.
This will also assist in tracking down `stage0` code to be removed whenever
we're updating the bootstrap compiler.
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Historically this was done to accommodate bugs in lints, but there hasn't been a
bug in a lint since this feature was added which the warnings affected. Let's
completely purge warnings from all our stages by denying warnings in all stages.
This will also assist in tracking down `stage0` code to be removed whenever
we're updating the bootstrap compiler.
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Resetting the terminal should first try `sgr0` (as per the comment), not
`sg0` which I believe to be a typo.
This will at least fix rustc output in Emacs terminals (e.g., ansi-term)
with `TERM=eterm-color` which does not provide the next fallback `sgr`. In
such a terminal, the final fallback `op` (`\e[39;49`) is used which
resets only colors, not all attributes. This causes all text to be
printed in bold from the first string printed in bold by rustc onwards,
including the terminal prompt and the output from all following commands.
The typo seems to have been introduced by #29999
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Now that we've got a beta build, let's use it!
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cc [`?` tracking issue](https://github.com/rust-lang/rust/issues/31436)
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* Hand rebased from Niels original work on 1.9.0
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