Matthias Krüger
c5d223033b
Rollup merge of #102127 - TaKO8Ki:use-appropriate-variable-names, r=lcnr
...
Use appropriate variable names
2022-09-22 21:34:52 +02:00
Takayuki Maeda
2d7f987715
use appropriate variable names
2022-09-22 16:11:51 +09:00
bors
7a8636c843
Auto merge of #100982 - fee1-dead-contrib:const-impl-requires-const-trait, r=oli-obk
...
Require `#[const_trait]` on `Trait` for `impl const Trait`
r? `@oli-obk`
2022-09-22 04:22:24 +00:00
Jhonny Bill Mena
e52e2344dc
FIX - adopt new Diagnostic naming in newly migrated modules
...
FIX - ambiguous Diagnostic link in docs
UPDATE - rename diagnostic_items to IntoDiagnostic and AddToDiagnostic
[Gardening] FIX - formatting via `x fmt`
FIX - rebase conflicts. NOTE: Confirm wheather or not we want to handle TargetDataLayoutErrorsWrapper this way
DELETE - unneeded allow attributes in Handler method
FIX - broken test
FIX - Rebase conflict
UPDATE - rename residual _SessionDiagnostic and fix LintDiag link
2022-09-21 11:43:22 -04:00
Jhonny Bill Mena
5f91719f75
UPDATE - rename SessionSubdiagnostic macro to Subdiagnostic
...
Also renames:
- sym::AddSubdiagnostic to sym:: Subdiagnostic
- rustc_diagnostic_item = "AddSubdiagnostic" to rustc_diagnostic_item = "Subdiagnostic"
2022-09-21 11:39:53 -04:00
Jhonny Bill Mena
a3396b2070
UPDATE - rename DiagnosticHandler macro to Diagnostic
2022-09-21 11:39:53 -04:00
Jhonny Bill Mena
19b348fed4
UPDATE - rename DiagnosticHandler trait to IntoDiagnostic
2022-09-21 11:39:52 -04:00
Matthias Krüger
a6b34cd928
Rollup merge of #101713 - Bryanskiy:AccessLevels, r=petrochenkov
...
change AccessLevels representation
Part of RFC (https://github.com/rust-lang/rust/issues/48054 ). This patch implements effective visibility table with basic methods and change AccessLevels table representation according to it.
r? ``@petrochenkov``
2022-09-17 23:30:49 +02:00
Dylan DPC
3ad81e0dd8
Rollup merge of #93628 - est31:stabilize_let_else, r=joshtriplett
...
Stabilize `let else`
🎉 **Stabilizes the `let else` feature, added by [RFC 3137](https://github.com/rust-lang/rfcs/pull/3137 ).** 🎉
Reference PR: https://github.com/rust-lang/reference/pull/1156
closes #87335 (`let else` tracking issue)
FCP: https://github.com/rust-lang/rust/pull/93628#issuecomment-1029383585
----------
## Stabilization report
### Summary
The feature allows refutable patterns in `let` statements if the expression is
followed by a diverging `else`:
```Rust
fn get_count_item(s: &str) -> (u64, &str) {
let mut it = s.split(' ');
let (Some(count_str), Some(item)) = (it.next(), it.next()) else {
panic!("Can't segment count item pair: '{s}'");
};
let Ok(count) = u64::from_str(count_str) else {
panic!("Can't parse integer: '{count_str}'");
};
(count, item)
}
assert_eq!(get_count_item("3 chairs"), (3, "chairs"));
```
### Differences from the RFC / Desugaring
Outside of desugaring I'm not aware of any differences between the implementation and the RFC. The chosen desugaring has been changed from the RFC's [original](https://rust-lang.github.io/rfcs/3137-let-else.html#reference-level-explanations ). You can read a detailed discussion of the implementation history of it in `@cormacrelf` 's [summary](https://github.com/rust-lang/rust/pull/93628#issuecomment-1041143670 ) in this thread, as well as the [followup](https://github.com/rust-lang/rust/pull/93628#issuecomment-1046598419 ). Since that followup, further changes have happened to the desugaring, in #98574 , #99518 , #99954 . The later changes were mostly about the drop order: On match, temporaries drop in the same order as they would for a `let` declaration. On mismatch, temporaries drop before the `else` block.
### Test cases
In chronological order as they were merged.
Added by df9a2e0687#87688 ):
* [`ui/pattern/usefulness/top-level-alternation.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/pattern/usefulness/top-level-alternation.rs ) to ensure the unreachable pattern lint visits patterns inside `let else`.
Added by 5b95df4bdc#87688 ):
* [`ui/let-else/let-else-bool-binop-init.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-bool-binop-init.rs ) to ensure that no lazy boolean expressions (using `&&` or `||`) are allowed in the expression, as the RFC mandates.
* [`ui/let-else/let-else-brace-before-else.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-brace-before-else.rs ) to ensure that no `}` directly preceding the `else` is allowed in the expression, as the RFC mandates.
* [`ui/let-else/let-else-check.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-check.rs ) to ensure that `#[allow(...)]` attributes added to the entire `let` statement apply for the `else` block.
* [`ui/let-else/let-else-irrefutable.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-irrefutable.rs ) to ensure that the `irrefutable_let_patterns` lint fires.
* [`ui/let-else/let-else-missing-semicolon.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-missing-semicolon.rs ) to ensure the presence of semicolons at the end of the `let` statement.
* [`ui/let-else/let-else-non-diverging.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-non-diverging.rs ) to ensure the `else` block diverges.
* [`ui/let-else/let-else-run-pass.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-run-pass.rs ) to ensure the feature works in some simple test case settings.
* [`ui/let-else/let-else-scope.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-scope.rs ) to ensure the bindings created by the outer `let` expression are not available in the `else` block of it.
Added by bf7c32a447#89965 ):
* [`ui/let-else/issue-89960.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/issue-89960.rs ) as a regression test for the ICE-on-error bug #89960 . Later in 102b9125e1856541963c#89974 ):
* [`ui/let-else/let-else-if.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-if.rs ) to test for the improved error message that points out that `let else if` is not possible.
Added by 9b45713b6chttps://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-allow-unused.rs ) as a regression test for #89807 , to ensure that `#[allow(...)]` attributes added to the entire `let` statement apply for bindings created by the `let else` pattern.
Added by 61bcd8d307#89841 ):
* [`ui/let-else/let-else-non-copy.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-non-copy.rs ) to ensure that a copy is performed out of non-copy wrapper types. This mirrors `if let` behaviour. The test case bases on rustc internal changes originally meant for #89933 but then removed from the PR due to the error prior to the improvements of #89841 .
* [`ui/let-else/let-else-source-expr-nomove-pass.rs `](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-source-expr-nomove-pass.rs ) to ensure that while there is a move of the binding in the successful case, the `else` case can still access the non-matching value. This mirrors `if let` behaviour.
Added by 102b9125e1#89841 ):
* [`ui/let-else/let-else-ref-bindings.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-ref-bindings.rs ) and [`ui/let-else/let-else-ref-bindings-pass.rs `](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-ref-bindings-pass.rs ) to check `ref` and `ref mut` keywords in the pattern work correctly and error when needed.
Added by 2715c5f984#89841 ):
* Match ergonomic tests adapted from the `rfc2005` test suite.
Added by fec8a507a2#89841 ):
* [`ui/let-else/let-else-deref-coercion-annotated.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-deref-coercion-annotated.rs ) and [`ui/let-else/let-else-deref-coercion.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-deref-coercion.rs ) to check deref coercions.
#### Added since this stabilization report was originally written (2022-02-09)
Added by 76ea566677#94211 ):
* [`ui/let-else/let-else-destructuring.rs`](https://github.com/rust-lang/rust/blob/1.63.0/src/test/ui/let-else/let-else-destructuring.rs ) to give a nice error message if an user tries to do an assignment with a (possibly refutable) pattern and an `else` block, like asked for in #93995 .
Added by e7730dcb7e#94208 ):
* [`ui/let-else/let-else-allow-in-expr.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-allow-in-expr.rs ) to test whether `#[allow(unused_variables)]` works in the expr, as well as its non presence, as well as putting it on the entire `let else` *affects* the expr, too. This was adding a missing test as pointed out by the stabilization report.
* Expansion of `ui/let-else/let-else-allow-unused.rs` and `ui/let-else/let-else-check.rs` to ensure that non-presence of `#[allow(unused)]` does issue the unused lint. This was adding a missing test case as pointed out by the stabilization report.
Added by 5bd71063b3#94208 ):
* [`ui/let-else/let-else-slicing-error.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-slicing-error.rs ), a regression test for #92069 , which got fixed without addition of a regression test. This resolves a missing test as pointed out by the stabilization report.
Added by 5374688e1d#98574 ):
* [`src/test/ui/async-await/async-await-let-else.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/async-await/async-await-let-else.rs ) to test the interaction of async/await with `let else`
Added by 6c529ded86#98574 ):
* [`src/test/ui/let-else/let-else-temporary-lifetime.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-temporary-lifetime.rs ) as a (partial) regression test for #98672
Added by 9b56640106#99518 ):
* [`src/test/ui/let-else/let-else-temp-borrowck.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-temporary-lifetime.rs ) as a regression test for #93951
* Extension of `src/test/ui/let-else/let-else-temporary-lifetime.rs` to include a partial regression test for #98672 (especially regarding `else` drop order)
Added by baf9a7cb57#99518 ):
* Extension of `src/test/ui/let-else/let-else-temporary-lifetime.rs` to include a partial regression test for #93951 , similar to `let-else-temp-borrowck.rs`
Added by 60be2de8b7#99518 ):
* Extension of `src/test/ui/let-else/let-else-temporary-lifetime.rs` to include a program that can now be compiled thanks to borrow checker implications of #99518
Added by 47a7a91c96#100132 ):
* [`src/test/ui/let-else/issue-100103.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/issue-100103.rs ), as a regression test for #100103 , to ensure that there is no ICE when doing `Err(...)?` inside else blocks.
Added by e3c5bd617d#100443 ):
* [`src/test/ui/let-else/let-else-then-diverge.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-then-diverge.rs ), to verify that there is no unreachable code error with the current desugaring.
Added by 981852677c#100443 ):
* [`src/test/ui/let-else/issue-94176.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/issue-94176.rs ), to make sure that a correct span is emitted for a missing trailing expression error. Regression test for #94176 .
Added by e182d12a84#100434 ):
* [src/test/ui/unpretty/pretty-let-else.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/unpretty/pretty-let-else.rs ), as a regression test to ensure pretty printing works for `let else` (this bug surfaced in many different ways)
Added by e26285603c#99954 ):
* [`src/test/ui/let-else/let-else-temporary-lifetime.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-temporary-lifetime.rs ) extended to contain & borrows as well, as this was identified as an earlier issue with the desugaring: https://github.com/rust-lang/rust/issues/98672#issuecomment-1200196921
Added by 2d8460ef43#99291 ):
* [`src/test/ui/let-else/let-else-drop-order.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-drop-order.rs ) a matrix based test for various drop order behaviour of `let else`. Especially, it verifies equality of `let` and `let else` drop orders, [resolving](https://github.com/rust-lang/rust/pull/93628#issuecomment-1238498468 ) a [stabilization blocker](https://github.com/rust-lang/rust/pull/93628#issuecomment-1055738523 ).
Added by 1b87ce0d40#101410 ):
* Edit to `src/test/ui/let-else/let-else-temporary-lifetime.rs` to add the `-Zvalidate-mir` flag, as a regression test for #99228
Added by af591ebe4d#101410 ):
* [`src/test/ui/let-else/issue-99975.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/issue-99975.rs ) as a regression test for the ICE #99975 .
Added by this PR:
* `ui/let-else/let-else.rs`, a simple run-pass check, similar to `ui/let-else/let-else-run-pass.rs`.
### Things not currently tested
* ~~The `#[allow(...)]` tests check whether allow works, but they don't check whether the non-presence of allow causes a lint to fire.~~ → *test added by e7730dcb7eb29a10ee73f269f4dc6e9d606db0da*
* ~~There is no `#[allow(...)]` test for the expression, as there are tests for the pattern and the else block.~~ → *test added by e7730dcb7eb29a10ee73f269f4dc6e9d606db0da*
* ~~`let-else-brace-before-else.rs` forbids the `let ... = {} else {}` pattern and there is a rustfix to obtain `let ... = ({}) else {}`. I'm not sure whether the `.fixed` files are checked by the tooling that they compile. But if there is no such check, it would be neat to make sure that `let ... = ({}) else {}` compiles.~~ → *test added by e7730dcb7eb29a10ee73f269f4dc6e9d606db0da*
* ~~#92069 got closed as fixed, but no regression test was added. Not sure it's worth to add one.~~ → *test added by 5bd71063b3810d977aa376d1e6dd7cec359330cc*
* ~~consistency between `let else` and `if let` regarding lifetimes and drop order: https://github.com/rust-lang/rust/pull/93628#issuecomment-1055738523~~ → *test added by 2d8460ef43d902f34ba2133fe38f66ee8d2fdafc*
Edit: they are all tested now.
### Possible future work / Refutable destructuring assignments
[RFC 2909](https://rust-lang.github.io/rfcs/2909-destructuring-assignment.html ) specifies destructuring assignment, allowing statements like `FooBar { a, b, c } = foo();`.
As it was stabilized, destructuring assignment only allows *irrefutable* patterns, which before the advent of `let else` were the only patterns that `let` supported.
So the combination of `let else` and destructuring assignments gives reason to think about extensions of the destructuring assignments feature that allow refutable patterns, discussed in #93995 .
A naive mapping of `let else` to destructuring assignments in the form of `Some(v) = foo() else { ... };` might not be the ideal way. `let else` needs a diverging `else` clause as it introduces new bindings, while assignments have a default behaviour to fall back to if the pattern does not match, in the form of not performing the assignment. Thus, there is no good case to require divergence, or even an `else` clause at all, beyond the need for having *some* introducer syntax so that it is clear to readers that the assignment is not a given (enums and structs look similar). There are better candidates for introducer syntax however than an empty `else {}` clause, like `maybe` which could be added as a keyword on an edition boundary:
```Rust
let mut v = 0;
maybe Some(v) = foo(&v);
maybe Some(v) = foo(&v) else { bar() };
```
Further design discussion is left to an RFC, or the linked issue.
2022-09-17 15:31:06 +05:30
Rageking8
d433efa649
more simple formatting
2022-09-16 19:07:42 +08:00
Deadbeef
81b1810cd7
Require #[const_trait] for const impls
2022-09-16 11:48:42 +08:00
est31
173eb6f407
Only enable the let_else feature on bootstrap
...
On later stages, the feature is already stable.
Result of running:
rg -l "feature.let_else" compiler/ src/librustdoc/ library/ | xargs sed -s -i "s#\\[feature.let_else#\\[cfg_attr\\(bootstrap, feature\\(let_else\\)#"
2022-09-15 21:06:45 +02:00
Bryanskiy
d7b9221405
change AccessLevels representation
2022-09-14 18:11:00 +03:00
Dylan DPC
94bc08d94f
Rollup merge of #101772 - est31:replace_placeholder_diagnostics, r=jackh726
...
Also replace the placeholder for the stable_features lint
Follow up of #101215 and #100591 .
Fixes #101766
2022-09-14 19:26:21 +05:30
bors
a0d1df4a5d
Auto merge of #101709 - nnethercote:simplify-visitors-more, r=cjgillot
...
Simplify visitors more
A successor to #100392 .
r? `@cjgillot`
2022-09-14 05:21:14 +00:00
est31
3a38d566bd
Also replace the placeholder for the stable_features lint
2022-09-14 03:28:54 +02:00
bors
0df1ddc185
Auto merge of #99556 - davidtwco:collapse-debuginfo, r=wesleywiser
...
ssa: implement `#[collapse_debuginfo]`
cc #39153 rust-lang/compiler-team#386
Debuginfo line information for macro invocations are collapsed by default - line information are replaced by the line of the outermost expansion site. Using `-Zdebug-macros` disables this behaviour.
When the `collapse_debuginfo` feature is enabled, the default behaviour is reversed so that debuginfo is not collapsed by default. In addition, the `#[collapse_debuginfo]` attribute is available and can be applied to macro definitions which will then have their line information collapsed.
r? rust-lang/wg-debugging
2022-09-13 01:19:05 +00:00
Nicholas Nethercote
925363f13d
Remove unused span argument from walk_fn.
2022-09-12 13:24:27 +10:00
Nicholas Nethercote
6568ef338e
Remove path_span argument to the visit_path_segment methods.
...
The `visit_path_segment` method of both the AST and HIR visitors has a
`path_span` argument that isn't necessary. This commit removes it.
There are two very small and inconsequential functional changes.
- One call to `NodeCollector::insert` now is passed a path segment
identifier span instead of a full path span. This span is only used in
a panic message printed in the case of an internal compiler bug.
- Likewise, one call to `LifetimeCollectVisitor::record_elided_anchor`
now uses a path segment identifier span instead of a full path span.
This span is used to make some `'_` lifetimes.
2022-09-12 13:24:25 +10:00
Camille GILLOT
05812df603
Handle generic parameters.
2022-09-09 01:31:46 +00:00
Michael Goulet
78b962a4f3
RPITIT placeholder items
2022-09-09 01:31:44 +00:00
Nicholas Nethercote
e67f39f8bc
Introduce DotDotPos.
...
This shrinks `hir::Pat` from 88 to 72 bytes.
2022-09-08 15:25:50 +10:00
Nicholas Nethercote
4314615ff8
Arena-allocate hir::Lifetime.
...
This shrinks `hir::Ty` from 72 to 48 bytes.
`visit_lifetime` is added to the HIR stats collector because these types
are now stored in memory on their own, instead of being within other
types.
2022-09-08 15:07:19 +10:00
Matthias Krüger
0a1c816dcd
Rollup merge of #101503 - spastorino:add-debug-calls, r=compiler-errors
...
Add debug calls
`@oli-obk` requested this and other changes as a way of simplifying https://github.com/rust-lang/rust/pull/101345 . This is just going to make the diff of https://github.com/rust-lang/rust/pull/101345 smaller.
r? `@oli-obk` `@cjgillot`
2022-09-07 21:48:16 +02:00
Santiago Pastorino
d42afd2bd1
Format hir_id_validator error using pretty print
2022-09-07 10:46:17 -03:00
David Wood
38958aa8bd
ssa: implement #[collapse_debuginfo]
...
Debuginfo line information for macro invocations are collapsed by
default - line information are replaced by the line of the outermost
expansion site. Using `-Zdebug-macros` disables this behaviour.
When the `collapse_debuginfo` feature is enabled, the default behaviour
is reversed so that debuginfo is not collapsed by default. In addition,
the `#[collapse_debuginfo]` attribute is available and can be applied to
macro definitions which will then have their line information collapsed.
Signed-off-by: David Wood <david.wood@huawei.com>
2022-09-07 13:54:51 +01:00
Yuki Okushi
f68d05cf00
Rollup merge of #101486 - asquared31415:invalid_repr_list, r=estebank
...
Add list of recognized repr attributes to the unrecognized repr error
2022-09-07 07:43:54 +09:00
asquared31415
ad275f5096
add list of recognized repr attributes to the unrecognized repr error
2022-09-06 11:02:42 -04:00
bors
6c358c67d4
Auto merge of #101241 - camsteffen:refactor-binding-annotations, r=cjgillot
...
`BindingAnnotation` refactor
* `ast::BindingMode` is deleted and replaced with `hir::BindingAnnotation` (which is moved to `ast`)
* `BindingAnnotation` is changed from an enum to a tuple struct e.g. `BindingAnnotation(ByRef::No, Mutability::Mut)`
* Associated constants added for convenience `BindingAnnotation::{NONE, REF, MUT, REF_MUT}`
One goal is to make it more clear that `BindingAnnotation` merely represents syntax `ref mut` and not the actual binding mode. This was especially confusing since we had `ast::BindingMode`->`hir::BindingAnnotation`->`thir::BindingMode`.
I wish there were more symmetry between `ByRef` and `Mutability` (variant) naming (maybe `Mutable::Yes`?), and I also don't love how long the name `BindingAnnotation` is, but this seems like the best compromise. Ideas welcome.
2022-09-06 03:16:29 +00:00
bors
b44197abb0
Auto merge of #101261 - TaKO8Ki:separate-receiver-from-arguments-in-hir, r=cjgillot
...
Separate the receiver from arguments in HIR
Related to #100232
cc `@cjgillot`
2022-09-05 16:21:40 +00:00
Takayuki Maeda
9cde34e180
use propagate_through_exprs instead of propagate_through_expr
...
fix `ExprKind` static_assert_size
fix hir-stats
2022-09-05 23:11:34 +09:00
bors
2dc703fd6e
Auto merge of #101228 - nnethercote:simplify-hir-PathSegment, r=petrochenkov
...
Simplify `hir::PathSegment`
r? `@petrochenkov`
2022-09-05 13:36:54 +00:00
Takayuki Maeda
fea1c5f5c8
refactor: remove unnecessary variables
2022-09-05 22:31:02 +09:00
Takayuki Maeda
87c6da363f
separate the receiver from arguments in HIR
2022-09-05 22:25:49 +09:00
Dylan DPC
5d55009b79
Rollup merge of #101142 - nnethercote:improve-hir-stats, r=davidtwco
...
Improve HIR stats
#100398 improve the AST stats collection done by `-Zhir-stats`. This PR does the same for HIR stats collection.
r? `@davidtwco`
2022-09-05 14:15:51 +05:30
Nicholas Nethercote
6d850d936b
Make hir::PathSegment::res non-optional.
2022-09-05 14:20:25 +10:00
Camille GILLOT
e7164267a2
Do not call object_lifetime_default on lifetime params.
2022-09-03 21:11:42 +02:00
bors
8c6ce6b91b
Auto merge of #97802 - Enselic:add-no_ignore_sigkill-feature, r=joshtriplett
...
Support `#[unix_sigpipe = "inherit|sig_dfl"]` on `fn main()` to prevent ignoring `SIGPIPE`
When enabled, programs don't have to explicitly handle `ErrorKind::BrokenPipe` any longer. Currently, the program
```rust
fn main() { loop { println!("hello world"); } }
```
will print an error if used with a short-lived pipe, e.g.
% ./main | head -n 1
hello world
thread 'main' panicked at 'failed printing to stdout: Broken pipe (os error 32)', library/std/src/io/stdio.rs:1016:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
by enabling `#[unix_sigpipe = "sig_dfl"]` like this
```rust
#![feature(unix_sigpipe)]
#[unix_sigpipe = "sig_dfl"]
fn main() { loop { println!("hello world"); } }
```
there is no error, because `SIGPIPE` will not be ignored and thus the program will be killed appropriately:
% ./main | head -n 1
hello world
The current libstd behaviour of ignoring `SIGPIPE` before `fn main()` can be explicitly requested by using `#[unix_sigpipe = "sig_ign"]`.
With `#[unix_sigpipe = "inherit"]`, no change at all is made to `SIGPIPE`, which typically means the behaviour will be the same as `#[unix_sigpipe = "sig_dfl"]`.
See https://github.com/rust-lang/rust/issues/62569 and referenced issues for discussions regarding the `SIGPIPE` problem itself
See the [this](https://rust-lang.zulipchat.com/#narrow/stream/219381-t-libs/topic/Proposal.3A.20First.20step.20towards.20solving.20the.20SIGPIPE.20problem ) Zulip topic for more discussions, including about this PR.
Tracking issue: https://github.com/rust-lang/rust/issues/97889
2022-09-02 21:08:08 +00:00
Cameron Steffen
02ba216e3c
Refactor and re-use BindingAnnotation
2022-09-02 12:55:05 -05:00
Matthias Krüger
5a23efd31e
Rollup merge of #101215 - est31:rustdoc_version_placeholder, r=Mark-Simulacrum
...
Also replace the version placeholder in rustc_attr
Replace the version placeholder with the current version in the rustc_attr crate too so that users won't see the placeholder but instead the explicit version. This especially fixes the bug for rustdoc not showing it but instead the placeholder.
Originally reported [here](https://rust-lang.zulipchat.com/#narrow/stream/241545-t-release/topic/libs.20stabilization.20placeholder/near/296057188 ).
cc #100591
2022-09-02 18:22:01 +02:00
est31
0c4ec5df58
Also replace the version placeholder in rustc_attr
...
This fixes rustdoc not showing the current version as stabilization version
for recently stabilized lang features.
2022-09-02 01:47:01 +02:00
Oli Scherer
d3b22c7267
Directly use the instrument macro instead of its full path
2022-09-01 14:53:46 +00:00
Dezhi Wu
b1430fb7ca
Fix a bunch of typo
...
This PR will fix some typos detected by [typos].
I only picked the ones I was sure were spelling errors to fix, mostly in
the comments.
[typos]: https://github.com/crate-ci/typos
2022-08-31 18:24:55 +08:00
Dylan DPC
467d2c1833
Rollup merge of #100941 - lyming2007:issue-100584, r=oli-obk
...
Point at the string inside literal and mention if we need string inte…
…rpolation
modified: compiler/rustc_passes/src/liveness.rs
2022-08-30 16:56:10 +05:30
bors
a0d07093f8
Auto merge of #100812 - Nilstrieb:revert-let-chains-nightly, r=Mark-Simulacrum
...
Revert let_chains stabilization
This is the revert against master, the beta revert was already done in #100538 .
Bumps the stage0 compiler which already has it reverted.
2022-08-30 05:48:22 +00:00
Yiming Lei
39ffabbb40
Point at the string inside literal and mention if we need string interpolation
...
modified: compiler/rustc_passes/src/liveness.rs
new file: src/test/ui/type/issue-100584.rs
new file: src/test/ui/type/issue-100584.stderr
2022-08-29 11:58:20 -07:00
Nilstrieb
d1ef8180f9
Revert let_chains stabilization
...
This reverts commit 3266460749#100538 .
2022-08-29 19:34:11 +02:00
Dylan DPC
5555e13a6e
Rollup merge of #99821 - cjgillot:ast-lifetimes-2, r=compiler-errors
...
Remove separate indexing of early-bound regions
~Based on https://github.com/rust-lang/rust/pull/99728.~
This PR copies some modifications from https://github.com/rust-lang/rust/pull/97839 around object lifetime defaults.
These modifications allow to stop counting generic parameters during lifetime resolution, and rely on the indexing given by `rustc_typeck::collect`.
2022-08-29 16:49:39 +05:30
Matthias Krüger
6667754694
Rollup merge of #100959 - LuisCardosoOliveira:translation-rename-attr-warning, r=davidtwco
...
translations: rename warn_ to warning
## Description
This MR renames the the macro `warn_` to `warning`.
To give a little bit of context, as [explained](https://rust-lang.zulipchat.com/#narrow/stream/336883-i18n/topic/.23100717.20diag.20translation/near/295074146 ) by ```````@davidtwco``````` in the Zulip channel, `warn_` was named like that because the keyword `warn` is a built-in attribute and at the time this macro was created the word `warning` was also
taken.
However, it is no longer the case and we can rename `warn_` to `warning`.
2022-08-29 06:34:47 +02:00
Nicholas Nethercote
f26fdce991
Improve HIR stats collector.
...
Adds and removes some `visit_*` methods accordingly, improving
coverage, and avoiding some double counting. Brings it in line with the
AST stats collector.
2022-08-29 14:16:53 +10:00
