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Small fixes in rustdoc book
I read the `rustdoc` book today and noticed some small typos/problems. Mainly:
- `# fn foo() {}` was displayed when not needed because fenced block code type was `text` instead of `rust`;
- two path separators were missing and some Windows-style separators were not consistent with the rest of them (mainly Linux-style).
Here are my proposed fixes. It is my first PR for the rust project. Don't hesitate to tell me if I am doing it wrong or if you need anything else.
Have a nice day!
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Stable, beta and nightly URLs remain
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Optimize catch_unwind to match C++ try/catch
This refactors the implementation of catching unwinds to allow LLVM to inline the "try" closure directly into the happy path, avoiding indirection. This means that the catch_unwind implementation is (after this PR) zero-cost unless a panic is thrown.
https://rust.godbolt.org/z/cZcUSB is an example of the current codegen in a simple case. Notably, the codegen is *exactly the same* if `-Cpanic=abort` is passed, which is clearly not great.
This PR, on the other hand, generates the following assembly:
```asm
# -Cpanic=unwind:
push rbx
mov ebx,0x2a
call QWORD PTR [rip+0x1c53c] # <happy>
mov eax,ebx
pop rbx
ret
mov rdi,rax
call QWORD PTR [rip+0x1c537] # cleanup function call
call QWORD PTR [rip+0x1c539] # <unfortunate>
mov ebx,0xd
mov eax,ebx
pop rbx
ret
# -Cpanic=abort:
push rax
call QWORD PTR [rip+0x20a1] # <happy>
mov eax,0x2a
pop rcx
ret
```
Fixes #64224, and resolves #64222.
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Co-Authored-By: Yuki Okushi <huyuumi.dev@gmail.com>
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Co-Authored-By: Yuki Okushi <huyuumi.dev@gmail.com>
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Rename rustc guide
This is in preparation for https://github.com/rust-lang/rustc-guide/issues/470
Needs to be merged after we actually rename the guide.
Have used this to rename:
`git grep -l 'rustc_guide' | xargs sed -i 's/rustc_guide/rustc_dev_guide/g'`
`git grep -l 'rustc-guide' | xargs sed -i 's/rustc-guide/rustc-dev-guide/g'`
`git grep -l 'rustc guide' | xargs sed -i 's/rustc guide/rustc dev guide/g'`
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* Rename rustc-guide to rustc-dev-guide
* rust-lang.github.io/rustc-dev-guide -> rustc-dev-guide.rust-lang.org
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Remove spotlight
I had a few comments saying that this feature was at best misunderstood or not even used so I decided to organize a poll about on [twitter](https://twitter.com/imperioworld_/status/1232769353503956994). After 87 votes, the result is very clear: it's not useful. Considering the amount of code we have just to run it, I think it's definitely worth it to remove it.
r? @kinnison
cc @ollie27
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* update all docs to use ./x.py test tidy syntax
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Expose target libdir information via print command
With custom libdir it is required to have an access to library placement.
See https://github.com/RazrFalcon/cargo-bloat/issues/51
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Update books
## nomicon
8 commits in 3e6e1001dc6e095dbd5c88005e80969f60e384e1..9f797e65e6bcc79419975b17aff8e21c9adc039f
2019-12-14 22:08:52 +0000 to 2020-03-04 03:45:13 +0100
- Rustup to latest rustc (rust-lang-nursery/nomicon#203)
- (minor) Add backticks around type names (rust-lang-nursery/nomicon#197)
- Add book.toml (rust-lang-nursery/nomicon#185)
- Rename `Alloc` to `AllocRef` (rust-lang-nursery/nomicon#188)
- Lifetimes: explain how to fix destructor example (rust-lang-nursery/nomicon#195)
- mention soundness (rust-lang-nursery/nomicon#194)
- Fix example in FFI section Calling Rust from C (rust-lang-nursery/nomicon#193)
- Removed repeated word (rust-lang-nursery/nomicon#191)
## reference
8 commits in 64239df6d173562b9deb4f012e4c3e6e960c4754..559e09caa9661043744cf7af7bd88432d966f743
2020-02-10 19:05:13 +0100 to 2020-03-02 01:17:14 +0100
- Syntax error fix (rust-lang-nursery/reference#769)
- Fix incorrect pseudocode for #[repr(C)] struct alignment (rust-lang-nursery/reference#766)
- Replace "Field-Less" with "Fieldless" (rust-lang-nursery/reference#768)
- Removed repeated word (rust-lang-nursery/reference#767)
- Update for change in const lint name. (rust-lang-nursery/reference#764)
- semantic type -> resolved type (rust-lang-nursery/reference#761)
- add behavior change of relative paths without `self` in 2018 edition (rust-lang-nursery/reference#757)
- assignment operator expressions -> compound assignment expressions (rust-lang-nursery/reference#759)
## rust-by-example
3 commits in 32facd5522ddbbf37baf01e4e4b6562bc55c071a..db57f899ea2a56a544c8d280cbf033438666273d
2020-02-11 09:25:06 -0300 to 2020-02-18 17:46:46 -0300
- Minor typo fix in src/mod/visibility (rust-lang/rust-by-example#1309)
- Don't suggest Into implements a reverse conversion (rust-lang/rust-by-example#1307)
- Improve grammar in example of 'in let' section (rust-lang/rust-by-example#1308)
## embedded-book
2 commits in b2e1092bf67bd4d7686c4553f186edbb7f5f92db..b81ffb7a6f4c5aaed92786e770e99db116aa4ebd
2020-01-30 08:45:46 +0000 to 2020-02-27 08:06:04 +0000
- Setting output to `high` needs a `true` argument (rust-embedded/book#227)
- Add licence notes to index.md (rust-embedded/book#226)
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Clean up unstable book
- #58402's feature was renamed to `tidy_test_never_used_anywhere_else` and it is now used for tidy only
- `read_initializer` link is wrong and the doc should be auto-generated so removed
- Add dummy doc for `link_cfg`
- Stop generating `compiler_builtins_lib` doc in favor of b8ccc0f8a60ac16fdc00f4b2e36e1a5db8b78295
- Make `rustc_attrs` tracking issue "None"
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* Just lol
* Update src/appendix/humorust.md
Co-authored-by: Yuki Okushi <huyuumi.dev@gmail.com>
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rename feature to const_eval_limit
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* Get rid of references to the refractored `libsyntax` crate
* Apply suggestions from code review
Co-authored-by: Yuki Okushi <huyuumi.dev@gmail.com>
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It's mentioned further down with more details.
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