remove semicolon -_-
Add rem_bytes to conditional to avoid error when performing mod by 0
Add test file to confirm compilation passes.
Ensure we don't divide or mod by zero in llvm_type. Include test file from issue.
Implement edition hygiene for keywords
Determine "keywordness" of an identifier in its hygienic context.
cc https://github.com/rust-lang/rust/pull/49611
I've resurrected `proc` as an Edition-2015-only keyword for testing purposes, but it should probably be buried again. EDIT: `proc` is removed again.
stop considering location when computing outlives relationships
This doesn't (yet?) use SEME regions, but it does ignore the location for outlives constraints. This makes (I believe) NLL significantly faster -- but we should do some benchmarks. It regresses the "get-default" family of use cases for NLL, which is a shame, but keeps the other benefits, and thus represents a decent step forward.
r? @pnkfelix
Improve format string errors
Point at format string position inside the formatting string:
```
error: invalid format string: unmatched `}` found
--> $DIR/format-string-error.rs:21:22
|
LL | let _ = format!("}");
| ^ unmatched `}` in format string
```
Explain that argument names can't start with an underscore:
```
error: invalid format string: invalid argument name `_foo`
--> $DIR/format-string-error.rs:15:23
|
LL | let _ = format!("{_foo}", _foo = 6usize);
| ^^^^ invalid argument name in format string
|
= note: argument names cannot start with an underscore
```
Fix#23476.
The more accurate spans will only be seen when using `format!` directly, when using `println!` the diagnostics machinery makes the span be the entire statement.
compiletest: Run revisions as independent tests.
Fixes#47604.
- The output of each test is now in its own directory.
- "auxiliary" output is now under the respective test directory.
- `stage_id` removed from filenames, and instead placed in the stamp file as a hash. This helps keep path lengths down for Windows.
In brief, the new layout looks like this:
```
<build_base>/<relative_dir>/<testname>.<revision>.<mode>/
stamp
<testname>.err
<testname>.out
a (binary)
auxiliary/lib<auxname>.dylib
auxiliary/<auxname>/<auxname>.err
auxiliary/<auxname>/<auxname>.out
```
(revision and mode are optional)
- The output of each test is now in its own directory.
- "auxiliary" output is now under the respective test directory.
- `stage_id` removed from filenames, and instead placed in the stamp file as a hash. This helps keep path lengths down for Windows.
In brief, the new layout looks like this:
```
<build_base>/<relative_dir>/<testname>.<revision>.<mode>/
stamp
<testname>.err
<testname>.out
a (binary)
auxiliary/lib<auxname>.dylib
auxiliary/<auxname>/<auxname>.err
auxiliary/<auxname>/<auxname>.out
```
(revision and mode are optional)
rustc: Fix `crate` lint for single-item paths
This commit fixes recommending the `crate` prefix when migrating to 2018 for
paths that look like `use foo;` or `use {bar, baz}`
Closes#50660
Rollup of 17 pull requests
Successful merges:
- #50170 (Implement From for more types on Cow)
- #50638 (Don't unconditionally set CLOEXEC twice on every fd we open on Linux)
- #50656 (Fix `fn main() -> impl Trait` for non-`Termination` trait)
- #50669 (rustdoc: deprecate `#![doc(passes, plugins, no_default_passes)]`)
- #50726 (read2: Use inner function instead of closure)
- #50728 (Fix rustdoc panic with `impl Trait` in type parameters)
- #50736 (env: remove unwrap in examples in favor of try op)
- #50740 (Remove LazyBTreeMap.)
- #50752 (Add missing error codes in libsyntax-ext asm)
- #50779 (Make mutable_noalias and arg_align_attributes be tracked)
- #50787 (Fix run-make wasm tests)
- #50788 (Fix an ICE when casting a nonexistent const)
- #50789 (Ensure libraries built in stage0 have unique metadata)
- #50793 (tidy: Add a check for empty UI test files)
- #50797 (fix a typo in signed-integer::from_str_radix())
- #50808 (Stabilize num::NonZeroU*)
- #50809 (GitHub: Stop treating Cargo.lock as a generated file.)
Failed merges:
tidy: Add a check for empty UI test files
Check for empty `.stderr` and `.stdout` files in UI test directories.
Empty files could still pass testing for `compile-pass` tests with no output
so they can get into the repo accidentally, but they are not necessary and can
be removed.
This is very much an in progress pull request. I'm having an issue with rustfmt. It wanted to reformat the entire file for almost every file by default. And when I run tidy it just errors out because it catches the empty files that are already in the repo.
My next step is goin got be to remove those empty file and see if running tidy again will actually reformat things outside of the context of `cargo fmt`
Fixes https://github.com/rust-lang/rust/issues/50785
Fix rustdoc panic with `impl Trait` in type parameters
Fixes#50702.
I'm not sure `impl Trait`s neither in arguments nor in return types are supposed to work, though.
rustdoc: deprecate `#![doc(passes, plugins, no_default_passes)]`
Closes https://github.com/rust-lang/rust/issues/48164
Blocked on https://github.com/rust-lang/rust/pull/50541 - this includes those changes, which were necessary to create the UI test
cc https://github.com/rust-lang/rust/issues/44136
Turns out, there were special attributes to mess with rustdoc passes and plugins! Who knew! Since we deprecated the CLI flags for this functionality, it makes sense that we do the same for the attributes.
This PR also introduces a `#![doc(document_private_items)]` attribute, to match the `--document-private-items` flag introduced in https://github.com/rust-lang/rust/pull/44138 when the passes/plugins flags were deprecated.
I haven't done a search to see whether these attributes are being used at all, but if the flags were any indication, i don't expect to see any users of these.
Fix `fn main() -> impl Trait` for non-`Termination` trait
Fixes#50595.
This bug currently affects stable. Why I think we can go for hard error:
- It will in stable for at most one cycle and there is no legitimate reason to abuse it, nor any known uses in the wild.
- It only affects `bin` crates (which have a `main`), so there is little practical difference between a hard error or a deny lint, both are a one line fix.
The fix was to just unshadow a variable. Thanks @nikomatsakis for the mentoring!
r? @nikomatsakis
Review proc macro API 1.2
cc https://github.com/rust-lang/rust/issues/38356
Summary of applied changes:
- Documentation for proc macro API 1.2 is expanded.
- Renamed APIs: `Term` -> `Ident`, `TokenTree::Term` -> `TokenTree::Ident`, `Op` -> `Punct`, `TokenTree::Op` -> `TokenTree::Punct`, `Op::op` -> `Punct::as_char`.
- Removed APIs: `Ident::as_str`, use `Display` impl for `Ident` instead.
- New APIs (not stabilized in 1.2): `Ident::new_raw` for creating a raw identifier (I'm not sure `new_x` it's a very idiomatic name though).
- Runtime changes:
- `Punct::new` now ensures that the input `char` is a valid punctuation character in Rust.
- `Ident::new` ensures that the input `str` is a valid identifier in Rust.
- Lifetimes in proc macros are now represented as two joint tokens - `Punct('\'', Spacing::Joint)` and `Ident("lifetime_name_without_quote")` similarly to multi-character operators.
- Stabilized APIs: None yet.
A bit of motivation for renaming (although it was already stated in the review comments):
- With my compiler frontend glasses on `Ident` is the single most appropriate name for this thing, *especially* if we are doing input validation on construction. `TokenTree::Ident` effectively wraps `token::Ident` or `ast::Ident + is_raw`, its meaning is "identifier" and it's already named `ident` in declarative macros.
- Regarding `Punct`, the motivation is that `Op` is actively misleading. The thing doesn't mean an operator, it's neither a subset of operators (there is non-operator punctuation in the language), nor superset (operators can be multicharacter while this thing is always a single character). So I named it `Punct` (first proposed in [the original RFC](https://github.com/rust-lang/rfcs/pull/1566), then [by @SimonSapin](https://github.com/rust-lang/rust/issues/38356#issuecomment-276676526)) , together with input validation it's now a subset of ASCII punctuation character category (`u8::is_ascii_punctuation`).
Implement RFC 2056 trivial constraints in where clauses
This is an implementation of the new behaviour for #48214. Tests are mostly updated to show the effects of this. Feature gate hasn't been added yet.
Some things that are worth noting and are maybe not want we want
* `&mut T: Copy` doesn't allow as much as someone might expect because there is often an implicit reborrow.
* ~There isn't a check that a where clause is well-formed any more, so `where Vec<str>: Debug` is now allowed (without a `str: Sized` bound).~
r? @nikomatsakis
The Great Generics Generalisation: Ty Edition
Part of the generic parameter refactoring effort, split off from https://github.com/rust-lang/rust/pull/48149. Contains the `ty`-relative refactoring.
r? @eddyb
