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.
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.
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]
Make most `rustc_type_ir` kinds `Copy` by default
1. There's no reason why `TyKind` and `ConstKind`/`ConstData` can't be `Copy`. This allows us to avoid needing a typed arena for the two types.
2. Simplify some impls into derives.
Stop allowing `rustc::potential_query_instability` on all of
`rustc_codegen_llvm` and instead allow it on a case-by-case basis. In
this case, both instances are safe to allow.
Rollup of 7 pull requests
Successful merges:
- #118445 (Let `reuse` look inside git submodules)
- #118756 (use bold magenta instead of bold white for highlighting)
- #118797 (End locals' live range before suspending coroutine)
- #118840 (remove some redundant clones)
- #118844 (Monomorphize args while building Instance body in StableMIR)
- #118846 (Fix BinOp `ty()` assertion and `fn_sig()` for closures)
- #118848 (Add myself back to review rotation)
r? `@ghost`
`@rustbot` modify labels: rollup
Fix BinOp `ty()` assertion and `fn_sig()` for closures
`BinOp::ty()` was asserting that the argument types were primitives. However, the primitive check doesn't include pointers, which can be used in a `BinaryOperation`. Thus extend the arguments to include them.
Since I had to add methods to check for pointers in TyKind, I just went ahead and added a bunch more utility checks that can be handy for our users and fixed the `fn_sig()` method to also include closures.
`@compiler-errors` just wanted to confirm that today no `BinaryOperation` accept SIMD types. Is that correct?
r? `@compiler-errors`
Monomorphize args while building Instance body in StableMIR
The function `Instance::body()` in StableMIR is supposed to return a monomorphic body by instantiating all possibly generic constructs. We were previously instantiating type and constants, but not generic arguments. This PR ensures that we also instantiate them.
r? ``@compiler-errors``
End locals' live range before suspending coroutine
State transforms retains storage statements for locals that are not
stored inside a coroutine. It ensures those locals are live when
resuming by inserting StorageLive as appropriate. It forgot to end the
storage of those locals when suspending, which is fixed here.
While the end of live range is implicit when executing return, it is
nevertheless useful for inliner which would otherwise extend the live
range beyond return.
Fixes#117733
Let `reuse` look inside git submodules
Changes `collect-license-metadata` and `generate-copyright` so they can now look at the git submodules.
Unfortunately `reuse` chokes on the LLVM submodule - it finds the word "Copyright" or the unicode copyright symbol in all kinds of places, including UTF-8 test cases. The `reuse` tool expressly won't let you ignore folders, so we let it scan everything and then strip out the LLVM sub-folder in post. Instead, we add in a hand-curated list of copyright information gleaned by reading the LLVM codebase carefully, which is stored in `.reuse/dep5` in Debian format where `reuse` can find and use it.
The `.reuse/dep5` continues to track copyright info for files in the tree that do not have SPDX metadata in them (i.e. all of them)
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.
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.
State transforms retains storage statements for locals that are not
stored inside a coroutine. It ensures those locals are live when
resuming by inserting StorageLive as appropriate. It forgot to end the
storage of those locals when suspending, which is fixed here.
While the end of live range is implicit when executing return, it is
nevertheless useful for inliner which would otherwise extend the live
range beyond return.
`.debug_pubnames` and `.debug_pubtypes` are poorly designed and people
seldom use them. However, they take a considerable portion of size in
the final binary. This tells LLVM stop emitting those sections on
DWARFv4 or lower. DWARFv5 use `.debug_names` which is more concise
in size and performant for name lookup.
