The `span` arg is described in a comment as "interior span of the
literal, without quotes", which is incorrect. It's actually the span of
the error part of the literal, corresponding to `range`.
This commit renames `span` and `span_without_quotes` to make things
clearer, and fixes the erroneous comment.
Useless vec false positive
changelog: [`useless_vec`]: fix false positive in macros.
fixes#11861
We delay the emission of `useless_vec` lints to the check_crate_post stage, which allows us to effectively undo lints if we find that a `vec![]` expression is being used multiple times after macro expansion.
Raw strings don't have escape sequences, so for them "unescaping" just
means checking for invalid chars like bare CR. Which means there is no
need to rebuild them one char or byte at a time while escaping, because
the unescaped version will be the same. This commit removes that
rebuilding.
Also, the commit changes things so that "unescaping" is unconditional for
raw strings and raw byte strings. That's simpler and they're rare enough
that the perf effect is negligible.
Add `trim_ascii_start`, `trim_ascii_end`, and `trim_ascii` functions to
`&str` for trimming ASCII whitespace under the `byte_slice_trim_ascii`
feature gate.
Add `inline` to `[u8]` `trim_ascii` functions
new lint to detect infinite loop
closes: #11438
changelog: add new lint to detect infinite loop
~*I'll change the lint name*~. Should I name it `infinite_loop` or `infinite_loops` is fine? Ahhhh, English is hard...
tests: CGU tests require build-pass, not check-pass (remove FIXME)
CGU tests require CGU code to be exercised. We can't merely do "cargo check" on these tests.
Part of #62277
Correctly gate the parsing of match arms without body
https://github.com/rust-lang/rust/pull/118527 accidentally allowed the following to parse on stable:
```rust
match Some(0) {
None => { foo(); }
#[cfg(FALSE)]
Some(_)
}
```
This fixes that oversight. The way I choose which error to emit is the best I could think of, I'm open if you know a better way.
r? `@petrochenkov` since you're the one who noticed
rustc_codegen_llvm: Enforce `rustc::potential_query_instability` lint
Stop allowing `rustc::potential_query_instability` on all of `rustc_codegen_llvm` and instead allow it on a case-by-case basis if it is safe to do so. In this case, all 2 instances are safe to allow.
Part of https://github.com/rust-lang/rust/issues/84447 which is E-help-wanted.
rustdoc-search: clean up parser
The `c === "="` was redundant when `isSeparatorCharacter` already checks that.
The function `isStopCharacter` and `isEndCharacter` functions did exactly the same thing and have synonymous names. There doesn't seem much point in having both.
Improve an error involving attribute values.
Attribute values must be literals. The error you get when that doesn't hold is pretty bad, e.g.:
```
unexpected expression: 1 + 1
```
You also get the same error if the attribute value is a literal, but an invalid literal, e.g.:
```
unexpected expression: "foo"suffix
```
This commit does two things.
- Changes the error message to "attribute value must be a literal", which gives a better idea of what the problem is and how to fix it. It also no longer prints the invalid expression, because the carets below highlight it anyway.
- Separates the "not a literal" case from the "invalid literal" case. Which means invalid literals now get the specific error at the literal level, rather than at the attribute level.
r? `@compiler-errors`
Clarify how to choose a FutureIncompatibilityReason variant.
There has been some confusion about how to choose these variants, or what the procedure is for handling future-incompatible errors. Hopefully this helps provide some more information on how these work.
On borrow return type, suggest borrowing from arg or owned return type
When we encounter a function with a return type that has an anonymous lifetime with no argument to borrow from, besides suggesting the `'static` lifetime we now also suggest changing the arguments to be borrows or changing the return type to be an owned type.
```
error[E0106]: missing lifetime specifier
--> $DIR/variadic-ffi-6.rs:7:6
|
LL | ) -> &usize {
| ^ expected named lifetime parameter
|
= help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
|
LL | ) -> &'static usize {
| +++++++
help: instead, you are more likely to want to change one of the arguments to be borrowed...
|
LL | x: &usize,
| +
help: ...or alternatively, to want to return an owned value
|
LL - ) -> &usize {
LL + ) -> usize {
|
```
Fix#85843.
dont ICE when ConstKind::Expr for is_const_evaluatable
The problem is that we are not handling ConstKind::Expr inside report_not_const_evaluatable_error
Fixes [#114151]
Renamings:
- find -> opt_hir_node
- get -> hir_node
- find_by_def_id -> opt_hir_node_by_def_id
- get_by_def_id -> hir_node_by_def_id
Fix rebase changes using removed methods
Use `tcx.hir_node_by_def_id()` whenever possible in compiler
Fix clippy errors
Fix compiler
Apply suggestions from code review
Co-authored-by: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Add FIXME for `tcx.hir()` returned type about its removal
Simplify with with `tcx.hir_node_by_def_id`
Renamings:
- find -> opt_hir_node
- get -> hir_node
- find_by_def_id -> opt_hir_node_by_def_id
- get_by_def_id -> hir_node_by_def_id
Fix rebase changes using removed methods
Use `tcx.hir_node_by_def_id()` whenever possible in compiler
Fix clippy errors
Fix compiler
Apply suggestions from code review
Co-authored-by: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Add FIXME for `tcx.hir()` returned type about its removal
Simplify with with `tcx.hir_node_by_def_id`
Add `ineffective_open_options` lint
Fixes https://github.com/rust-lang/rust-clippy/issues/9628.
For `OpenOptions`, in case you call both `write(true)` and `append(true)` on `OpenOptions`, then `write(true)` is actually useless since `append(true)` does it.
r? `@flip1995`
changelog: Add `ineffective_open_options` lint
