Users coming from other languages (namely C and C++) often expect
to use a -Wall flag. Rustc doesn't support that, and previously it
simply printed that it didn't recognize the "all" lint.
This change makes rustc print out a help message, explaining:
- Why there is no -Wall flag
- How to view all the available warnings
- Point out that the most commonly used warning is -Wunused
- Instead of using a command-line flag, the user should consider
a !#[warn(unused)] directive in the root of their crate.
This Python script converts documentation comments from the
`#[doc = "..."]` attribute to the `///` syntax. It was added six
years ago, presumably to help with the transition when `///` was
implemented and hasn't really been touched since. I don't think there's
much value in keeping it around at this point.
Turn feature-gate table into a query so it is covered by dependency tracking.
Turn access to feature gates into a query so we handle them correctly during incremental compilation.
Features are still available via `Session` through `features_untracked()`. I wish we had a better way of hiding untracked information. It would be great if we could remove the `sess` field from `TyCtxt`.
Fixes#47003.
The ExplicitSelf::determine function expects to be able to compare regions.
However, when the compare_self_type error reporting code runs we haven't
resolved bound regions yet. Thus we replace them with free regions first.
The error was:
```
[00:05:25] tidy error: /checkout/src/libcore/num/mod.rs:3848: trailing whitespace
[00:05:25] tidy error: /checkout/src/libcore/num/mod.rs:3851: line longer than 100 chars
[00:05:25] tidy error: /checkout/src/libcore/num/mod.rs:3851: trailing whitespace
[00:05:26] some tidy checks failed
```
The line was truncated to 92 characters.
Initially, I wanted to add it directly to the documentation of `str. parse()' method, I finally found that it was more relevant (I hope so?) to directly document the structure in question. I've added a scenario, in which we could all get caught at least once, to make it easier to diagnose the problem when parsing integers.
