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Because it complicates lint implementation greatly.
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Fix `expr_to_spanned_string` ICE
Fixes #105011
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On type error with long types, print an abridged type and write the full
type to disk.
Print the widest possible short type while still fitting in the
terminal.
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Rollup of 11 pull requests
Successful merges:
- #104514 (Use node_ty_opt to avoid ICE in visit_ty)
- #104704 (Allow power10-vector feature in PowerPC)
- #104747 (resolve: Don't use constructor def ids in the map for field names)
- #104773 (OpaqueCast projections are always overlapping, they can't possibly be disjoint)
- #104774 (Document split{_ascii,}_whitespace() for empty strings)
- #104780 (make `error_reported` check for delayed bugs)
- #104782 (Bump the const eval step limit)
- #104792 (rustdoc: simplify `.search-results-title` CSS)
- #104796 (lint: do not warn unused parens around higher-ranked function pointers)
- #104820 (Remove normalize_projection_type)
- #104822 (with_query_mode -> new)
Failed merges:
- #104716 (move 2 candidates into builtin candidate)
- #104841 (Assert that we don't capture escaping bound vars in `Fn` trait selection)
r? `@ghost`
`@rustbot` modify labels: rollup
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make `error_reported` check for delayed bugs
Fixes #104768
`error_reported()` was only checking if there were errors emitted, not for `delay_bug`s which can also be a source of `ErrorGuaranteed`. I assume the same is true of `lint_err_count` but i dont know
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Use `as_deref` in compiler (but only where it makes sense)
This simplifies some code :3
(there are some changes that are not exacly `as_deref`, but more like "clever `Option`/`Result` method use")
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Instead of `ast::Lit`.
Literal lowering now happens at two different times. Expression literals
are lowered when HIR is crated. Attribute literals are lowered during
parsing.
This commit changes the language very slightly. Some programs that used
to not compile now will compile. This is because some invalid literals
that are removed by `cfg` or attribute macros will no longer trigger
errors. See this comment for more details:
https://github.com/rust-lang/rust/pull/102944#issuecomment-1277476773
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This option prints all supported values for -Csplit-debuginfo=.., i.e.
only stable ones on stable/beta and all of them on nightly/dev.
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improve `filesearch::get_or_default_sysroot`
`fn get_or_default_sysroot` is now improved and used in `miri` and `clippy`, and tests are still passing as they should. So we no longer need to implement custom workarounds/hacks to find sysroot in tools like miri/clippy.
Resolves https://github.com/rust-lang/rust/issues/98832
re-opened from #103581
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Signed-off-by: Onur Özkan <work@onurozkan.dev>
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Allow use of `-Clto=thin` with `-Ccodegen-units=1` in general
The current logic to ignore ThinLTO when `-Ccodegen-units=1` makes sense for local ThinLTO but even in this scenario, a user may still want (non-local) ThinLTO for the purpose of optimizing dependencies into the final crate which is being compiled with 1 CGU.
The previous behavior was even more confusing because if you were generating a binary (`--emit=link`), then you would get ThinLTO but if you asked for LLVM IR or bytecode, then it would silently change to using regular LTO.
With this change, we only override the defaults for local ThinLTO if you ask for a single output such as LLVM IR or bytecode and in all other cases honor the requested LTO setting.
r? `@michaelwoerister`
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Print valid `--print` requests if request is invalid
When someone makes a typo, it can be useful to see the valid options. This is also useful if someone wants to find out about all the options.
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Track where diagnostics were created.
This implements the `-Ztrack-diagnostics` flag, which uses `#[track_caller]` to track where diagnostics are created. It is meant as a debugging tool much like `-Ztreat-err-as-bug`.
For example, the following code...
```rust
struct A;
struct B;
fn main(){
let _: A = B;
}
```
...now emits the following error message:
```
error[E0308]: mismatched types
--> src\main.rs:5:16
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5 | let _: A = B;
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-Ztrack-diagnostics: created at compiler\rustc_infer\src\infer\error_reporting\mod.rs:2275:31
```
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When someone makes a typo, it can be useful to see the valid options.
This is also useful if someone wants to find out about all the options.
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The current logic to ignore ThinLTO when `-Ccodegen-units=1` makes sense
for local ThinLTO but even in this scenario, a user may still want
(non-local) ThinLTO for the purpose of optimizing dependencies into the
final crate which is being compiled with 1 CGU.
The previous behavior was even more confusing because if you were
generating a binary (`--emit=link`), then you would get ThinLTO but if
you asked for LLVM IR or bytecode, then it would silently change to
using regular LTO.
With this change, we only override the defaults for local ThinLTO if you
ask for a single output such as LLVM IR or bytecode and in all other
cases honor the requested LTO setting.
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Get rid of native_library projection queries
They don't seem particularly useful as I don't expect native libraries to change frequently.
Maybe they do provide significant value of keeping incremental compilation green though, I'm not sure.
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Change process spawning to inherit the parent's signal mask by default
Previously, the signal mask was always reset when a child process is
started. This breaks tools like `nohup` which expect `SIGHUP` to be
blocked for all transitive processes.
With this change, the default behavior changes to inherit the signal mask.
This also changes the signal disposition for `SIGPIPE` to only be changed if the `#[unix_sigpipe]` attribute isn't set.
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translation: doc comments with derives, subdiagnostic-less enum variants, more derive use
- Adds support for `doc` attributes in the diagnostic derives so that documentation comments don't result in the derive failing.
- Adds support for enum variants in the subdiagnostic derive to not actually correspond to an addition to a diagnostic.
- Made use of the derive in more places in the `rustc_ast_lowering`, `rustc_ast_passes`, `rustc_lint`, `rustc_session`, `rustc_infer` - taking advantage of recent additions like eager subdiagnostics, multispan suggestions, etc.
cc #100717
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Previously, the signal mask is always reset when a child process is
started. This breaks tools like `nohup` which expect `SIGHUP` to be
blocked.
With this change, the default behavior changes to inherit the signal mask.
This also changes the signal disposition for `SIGPIPE` to only be
changed if the `#[unix_sigpipe]` attribute isn't set.
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They don't seem particularly useful as I don't expect
native libraries to change frequently.
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It's no longer used.
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Signed-off-by: David Wood <david.wood@huawei.com>
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More dupe word typos
I only picked those changes (from the regex search) that I am pretty certain doesn't change meaning and is just a typo fix. Do correct me if any fix is undesirable and I can revert those. Thanks.
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This way we comply with the Coherence rule given that IntoDiagnostic trait is defined in rustc_errors, and almost all other crates depend on it.
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Add `Noted` marker struct that implements `EmissionGuarantee` so that
`emit_note` and `create_note` can be implemented for struct diagnostics.
Signed-off-by: David Wood <david.wood@huawei.com>
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The compiler currently has `-Ztime` and `-Ztime-passes`. I've used
`-Ztime-passes` for years but only recently learned about `-Ztime`.
What's the difference? Let's look at the `-Zhelp` output:
```
-Z time=val -- measure time of rustc processes (default: no)
-Z time-passes=val -- measure time of each rustc pass (default: no)
```
The `-Ztime-passes` description is clear, but the `-Ztime` one is less so.
Sounds like it measures the time for the entire process?
No. The real difference is that `-Ztime-passes` prints out info about passes,
and `-Ztime` does the same, but only for a subset of those passes. More
specifically, there is a distinction in the profiling code between a "verbose
generic activity" and an "extra verbose generic activity". `-Ztime-passes`
prints both kinds, while `-Ztime` only prints the first one. (It took me
a close reading of the source code to determine this difference.)
In practice this distinction has low value. Perhaps in the past the "extra
verbose" output was more voluminous, but now that we only print stats for a
pass if it exceeds 5ms or alters the RSS, `-Ztime-passes` is less spammy. Also,
a lot of the "extra verbose" cases are for individual lint passes, and you need
to also use `-Zno-interleave-lints` to see those anyway.
Therefore, this commit removes `-Ztime` and the associated machinery. One thing
to note is that the existing "extra verbose" activities all have an extra
string argument, so the commit adds the ability to accept an extra argument to
the "verbose" activities.
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Migrate more of rustc_parse to SessionDiagnostic
Still far from complete, but I thought I'd add a checkpoint here because rebasing was starting to get annoying.
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In #101230, the internal diagnostic migration lints -
`diagnostic_outside_of_impl` and `untranslatable_diagnostic` - were
modified so that they wouldn't trigger on functions annotated with
`#[rustc_lint_diagnostics]`. However, this change has to make it into
the bootstrap compiler before the `#[allow]` annotations that it aims to
remove can be removed, which is possible now that #102051 has landed.
Signed-off-by: David Wood <david.wood@huawei.com>
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Remove support for legacy PM
This removes support for optimizing with LLVM's legacy pass manager, as well as the unstable `-Znew-llvm-pass-manager` option. We have been defaulting to the new PM since LLVM 13 (except for s390x that waited for 14), and LLVM 15 removed support altogether. The only place we still use the legacy PM is for writing the output file, just like `llc` does.
cc #74705
r? ``@nikic``
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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
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Also renames:
- sym::AddSubdiagnostic to sym:: Subdiagnostic
- rustc_diagnostic_item = "AddSubdiagnostic" to rustc_diagnostic_item = "Subdiagnostic"
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