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Keep space if arg does not follow punctuation when lint unused parens
Fixes rust-lang/rust#138234
If the arg follows punctuation, still pass `left_pos` with `None` and no space will be added, else then pass `left_pos` with `Some(arg.span.lo())`, so that we can add the space as expected.
And `emit_unused_delims` can make sure no more space will be added if the expr follows space.
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Edited:
Directly use the `value_span` to check whether the expr removed parens will follow identifier or be followed by identifier.
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Bump rustfix 0.8.1 -> 0.8.7
This commit can be replicated by running `cargo update -p rustfix --precise 0.8.7 && x test ui --bless`.
---
The reasons this affects UI tests is as follows:
- The UI test suite runs rustc with `-Z deduplicate-diagnostics=no --error-format=json`, which means that rustc emits multiple errors containing identical suggestions. That caused the weird-looking code that had multiple `X: Copy` suggestions.
- Those suggestions are interpreted not by rustc itself, but by the `rustfix` library, maintained by cargo but published as a separate crates.io library and used by compiletest.
- Sometime between rustfix 0.8.1 and 0.8.7 (probably in rust-lang/cargo#14747, but it's hard to tell because rustfix's versioning doesn't match cargo's), rustfix got smarter and stopped applying duplicate suggestions.
Update rustfix to match cargo's behavior. Ideally, we would always share a version of rustfix between cargo and rustc (perhaps with a path dependency?), to make sure we are testing the behavior we ship. But for now, just manually update it to match.
Note that the latest version of rustfix published to crates.io is 0.9.1, not 0.8.7. But 0.9.1 is not the version used in cargo, which is 0.9.3. Rather than trying to match versions exactly, I just updated rustfix to the latest in the 0.8 branch.
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Display ?Sized, const, and lifetime parameters in trait item suggestions across a crate boundary
context: rust-lang/rust#145929
This fixes the MetaSized issue and adds const generics and early bound lifetimes. Late bound lifetimes are harder because they aren't returned by `generics_of`. I'm going to look into it, but there's no guarantee I'll be successful.
Fixes https://github.com/rust-lang/rust/issues/146404.
r? `@BoxyUwu`
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When writing something like the expression `|_: ...| {}`, we now detect the `...` during parsing explicitly instead of relying on the detection in `parse_ty_common` so that we don't talk about "nested `...` are not supported".
```
error: unexpected `...`
--> $DIR/no-closure.rs:6:35
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LL | const F: extern "C" fn(...) = |_: ...| {};
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= note: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list
```
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DestinationPropagation: avoid creating overlapping assignments.
r? `@Amanieu`
Fixes https://github.com/rust-lang/rust/issues/146383
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Rollup of 9 pull requests
Successful merges:
- rust-lang/rust#145095 (Migrate `UnsizedConstParamTy` to unstable impl of `ConstParamTy_`)
- rust-lang/rust#145960 (Split `FnCtxt::report_args_error` into subfunctions)
- rust-lang/rust#146402 (interpret: fix overlapping aggregate initialization)
- rust-lang/rust#146466 (llvm-wrapper: other cleanup)
- rust-lang/rust#146574 (compiletest: Enable new-output-capture by default)
- rust-lang/rust#146599 (replace some `#[const_trait]` with `const trait`)
- rust-lang/rust#146601 (compiletest: Make `./x test --test-args ...` work again)
- rust-lang/rust#146608 (improve internal bootstrap docs)
- rust-lang/rust#146609 (bootstrap: lower verbosity of cargo to one less than bootstrap's)
r? `@ghost`
`@rustbot` modify labels: rollup
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Migrate `UnsizedConstParamTy` to unstable impl of `ConstParamTy_`
Now that we have ``#[unstable_feature_bound]``, we can remove ``UnsizedConstParamTy`` that was meant to be an unstable impl of stable type and ``ConstParamTy_`` trait.
r? `@BoxyUwU`
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Fix typo in error message
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r=Amanieu
rustc_codegen_llvm: Adjust RISC-V inline assembly's clobber list
Despite that the `fflags` register (representing floating point exception flags) is stated as a flag register [in the reference](https://doc.rust-lang.org/reference/inline-assembly.html#r-asm.rules.preserved-registers), it's not
in the default clobber list of the RISC-V inline assembly and it would be better to fix it.
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r=Mark-Simulacrum
tests/codegen-llvm: Make rust-abi-arch-specific-adjustment portable
This test currently only runs on RISC-V and loongarch hosts, but assumes that the host target is the -gnu target. By using minicore, we can run this test on all host targets, regardless of architecture, as long as the LLVM components are built.
This also fixes this test on musl hosts of these architectures (though I've only tested on loongarch64-unknown-linux-musl).
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non_region_infer
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This commit can be replicated by running
`cargo update -p rustfix --precise 0.8.7 && x test ui --bless`.
---
The reasons this affects UI tests is as follows:
- The UI test suite runs rustc with
`-Z deduplicate-diagnostics=no --error-format=json`,
which means that rustc emits multiple errors containing identical
suggestions. That caused the weird-looking code that had multiple `X: Copy` suggestions.
- Those suggestions are interpreted not by rustc itself, but by the
`rustfix` library, maintained by cargo but published as a separate
crates.io library and used by compiletest.
- Sometime between rustfix 0.8.1 and 0.8.7 (probably in cargo 14747, but
it's hard to tell because rustfix's versioning doesn't match cargo's),
rustfix got smarter and stopped applying duplicate suggestions.
Update rustfix to match cargo's behavior. Ideally, we would always share
a version of rustfix between cargo and rustc (perhaps with a path
dependency?), to make sure we are testing the behavior we ship. But for
now, just manually update it to match.
Note that the latest version of rustfix published to crates.io is 0.9.1,
not 0.8.7. But 0.9.1 is not the version used in cargo, which is 0.9.3.
Rather than trying to match versions exactly, I just updated rustfix to
the latest in the 0.8 branch.
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All of the tier 3 targets in the list now link dynamically by default
(except mips64el-unknown-linux-muslabi64, I overlooked that one).
Adjust the list of targets expected to link statically accordingly.
Signed-off-by: Jens Reidel <adrian@travitia.xyz>
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```
error: unexpected `...`
--> $DIR/varargs-in-closure-isnt-supported.rs:5:20
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LL | let mut lol = |...| ();
| ^^^ not a valid pattern
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= note: C-variadic type `...` is not allowed here
```
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tests: update new test to accept new lifetime format
Same change as rust-lang/rust@258915a55539593423c3d4c30f7b741f65c56e51, just for a newly written test.
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add reference id to test, and fix filename
Noticed the filename is wrong, then took advantage of being there by adding Reference id
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Despite that the `fflags` register (representing floating point
exception flags) is stated as a flag register in the reference, it's not
in the default clobber list of the RISC-V inline assembly and it would
be better to fix it.
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document `core::ffi::VaArgSafe`
tracking issue: https://github.com/rust-lang/rust/issues/44930
A modification of https://github.com/rust-lang/rust/pull/146454, keeping just the documentation changes, but not unsealing the trait.
Although conceptually we'd want to unseal the trait, there are many edge cases to supporting arbitrary types. We'd need to exhaustively test that all targets/calling conventions support all types that rust might generate (or generate proper error messages for unsupported cases). At present, many of the `va_arg` implementations assume that the argument is a scalar, and has an alignment of at most 8. That is totally sufficient for an MVP (accepting all of the "standard" C types), but clearly does not cover all rust types.
This PR also adds some various other tests for edge cases of c-variadic:
- the `#[inline]` attribute in its various forms. At present, LLVM is unable to inline c-variadic functions, but the attribute should still be accepted. `#[rustc_force_inline]` already rejects c-variadic functions.
- naked functions should accept and work with a C variable argument list. In the future we'd like to allow more ABIs with naked functions (basically, any ABI for which we accept defining foreign c-variadic functions), but for now only `"C"` and `"C-unwind` are supported
- guaranteed tail calls: c-variadic functions cannot be tail-called. That was already rejected, but there was not test for it.
r? `@workingjubilee`
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tidy: check that error messages don't start with a capitalized letter
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they don't do anything, because LLVM is unable to inline c-variadic functions (on most targets, anyway)
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as far as I can see this was not tested, though the error message was already implemented
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