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all of these currently force stronger frame pointers, and
currently the CLI does not override the target
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Don't build a broken/untested profiler runtime on mingw targets
Context: https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/Why.20build.20a.20broken.2Funtested.20profiler.20runtime.20on.20mingw.3F
#75872 added `--enable-profiler` to the `x86_64-mingw` job (to cause some additional tests to run), but had to also add `//@ ignore-windows-gnu` to all of the tests that rely on the profiler runtime actually *working*, because it's broken on that target.
We can achieve a similar outcome by going through all the `//@ needs-profiler-support` tests that don't actually need to produce/run a binary, and making them use `-Zno-profiler-runtime` instead, so that they can run even in configurations that don't have the profiler runtime available. Then we can remove `--enable-profiler` from `x86_64-mingw`, and still get the same amount of testing.
This PR also removes `--enable-profiler` from the mingw dist builds, since it is broken/untested on that target. Those builds have had that flag for a very long time.
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The profiler runtime is no longer built in mingw test jobs, so these tests
should naturally be skipped by `//@ needs-profiler-support`.
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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compiletest: Stricter parsing of `//@ normalize-*` headers
I noticed some problems with the existing parser for these headers:
- It is extremely lax, and basically ignores everything other than the text between two pairs of double-quote characters.
- Unlike other name-value headers, it doesn't even check for a colon after the header name, so the test suite contains a mixture of with-colon and without-colon normalization rules.
- If parsing fails, the header is silently ignored.
The latter is especially bad for platform-specific normalization rules, because the lack of normalization probably won't be noticed until the test mysteriously fails in one of the full CI jobs.
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run-make: annotate library with `#[must_use]` and enforce `unused_must_use` in rmake.rs
This PR adds `#[must_use]` annotations to functions of the `run_make_support` library where it makes sense, and adjusts compiletest to compile rmake.rs with `-Dunused_must_use`.
The rationale is that it's highly likely that unused `#[must_use]` values in rmake.rs test files are bugs. For example, unused fs/io results are often load-bearing to the correctness of the test and often unchecked fs/io results allow the test to silently pass where it would've failed if the result was checked.
This PR is best reviewed commit-by-commit.
try-job: test-various
try-job: x86_64-msvc
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Add {{target}} substitution to compiletest
In ferrocene we have ui tests testing the cli interface of the compiler, one of which tests the `--target` flag. To be able to run this on all targets we require a way to specify a valid target in the `compile-flags` directive that is target independent, as otherwise we can only run the test against the one target we choose to supply in the flags. See https://github.com/ferrocene/ferrocene/blob/383cbc80f4e85859a4055f121f15dac329908346/tests/ui/ferrocene/compiler-arguments/target/target.rs
We figured the project might be able to make use of this substitution as well in the future.
try-job: dist-x86_64-msvc
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This header is much more restrictive than its old name would suggest. As a
result, most of the tests that use it don't actually run in any CI jobs.
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Change how runmake v2 tests are executed
This PR makes execution of v2 runmake tests more sane, by executing each test in a temporary directory by default, rather than running it inside `tests/run-make`. This will have.. a lot of conflicts.
Fixes: https://github.com/rust-lang/rust/issues/126080
Closes https://github.com/rust-lang/rust/issues/125726, because it removes `tmp_dir`, lol.
r? `@jieyouxu`
try-job: x86_64-msvc
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Port `tests/run-make-fulldeps/hotplug_codegen_backend` to ui-fulldeps
This is the last remaining run-make-fulldeps test, which means I actually had to leave behind a dummy README file to prevent compiletest from complaining about a missing directory.
(Removing the run-make-fulldeps suite entirely is non-trivial, so I intend to do so in a separate PR after this one.)
---
I wasn't sure about adding a new kind of aux build just for this one test, so I also tried to just port this test from Makefile to [rmake](https://github.com/rust-lang/rust/issues/121876) instead.
But I found that I couldn't get rmake to fully work for a run-make-fulldeps test, which convinced me that getting rid of run-make-fulldeps is worthwhile.
r? `@jieyouxu`
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And also remove some environment variables passed to compilation of `rmake.rs`.
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compiletest: Allow multiple `//@ run-flags:` headers
While working on some tests, I was annoyed to find that multiple `// `@run-flags:`` headers do not combine with each other (as `//@ compile-flags:` headers do), and instead all but one are silently discarded.
This makes it impossible to split long flag lists into multiple lines.
Fortunately it's easy to just recycle the existing logic from the other command-line-flags headers.
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Port `tests/run-make-fulldeps/issue-19371` to ui-fulldeps
This test can run as an ordinary `tests/ui-fulldeps` test, with the help of some additional header variable substitutions to supply a sysroot and linker.
---
Unlike #125973, this test appears to be testing something vaguely useful and breakable, which is why I didn't just delete it.
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Rewrite `suspicious-library`, `resolve-rename` and `incr-prev-body-beyond-eof` `run-make` tests in `rmake.rs` format
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
Some oddly specific ignore flags in `incr-prev-body-beyond-eof`:
```rs
// ignore-none
// ignore-nvptx64-nvidia-cuda
```
it could be interesting to run a try job, but it seems there is no nvidia-cuda in the CI settings (`jobs.yml`).
try-job: armhf-gnu
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compiletest: fix outdated rmake.rs comment
Noticed in https://github.com/rust-lang/rust/pull/125827#discussion_r1623420820. I fixed the PR description but forgot to update the comment.
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Improve compiletest expected/not found formatting
compiletest, oh compiletest, you are truly one of the tools in this repository. You're the omnipresent gatekeeper, ensuring that every new change works, doesn't break the world, and is nice. We thank you for your work, for your tests, for your test runs, for your features that help writing tests, for all the stability and and good you have caused. Without you, Rust wouldn't exist as it does, without you, nothing would work, without you, we would all go insane from having changes break and having to test them all by hand. Thank you, compiletest.
but holy shit i fucking hate your stupid debug output so much i simply cannot take this anymore aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
By changing a few magic lines in this file called "runtest.rs", we can cause compiletest to emit nicer messages. This is widely regarded as a good thing. We stop wasting vertical space, allowing more errors to be displayed at once. Additionally, we add colors, which make it so much more pretty *and* gay, both of which are very good and useful.
There's a bit of fuckery needed to get the colors to work. `colored` checks whether stdout is a terminal. We also print to stdout, so that works well.
But.... for some stupid reason that I absolutely refuse to even attempt to debug, stdout is *not* a terminal when executing tests *in a terminal*.
But stderr is >:).
So this just checks whether stderr is a terminal.
If you have a use case where you dump compiletest stdout into a place where colors are not supported while having stderr be a terminal, then I'm sorry for you, but you are gonna get colors and you're gonna like it. Stop it with the usual environment variable, which `colored` also respects by default.
### before (bad, hurts your brain, makes you want to cry)
## after (good, gay, makes you want to cry)
r? jieyouxu said he wants to review the PR
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compiletest, oh compiletest, you are truly one of the tools in this
repository. You're the omnipresent gatekeeper, ensuring that every new
change works, doesn't break the world, and is nice. We thank you for
your work, for your tests, for your test runs, for your features that
help writing tests, for all the stability and and good you have caused.
Without you, Rust wouldn't exist as it does, without you, nothing would
work, without you, we would all go insane from having changes break and
having to test them all by hand. Thank you, compiletest.
but holy shit i fucking hate your stupid debug output so much i simply
cannot take this anymore aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
By changing a few magic lines in this file called "runtest.rs", we can
cause compiletest to emit nicer messages. This is widely regarded as a
good thing. We stop wasting vertical space, allowing more errors to be
displayed at once. Additionally, we add colors, which make it so much
more pretty *and* gay, both of which are very good and useful.
There's a bit of fuckery needed to get the colors to work. `colored`
checks whether stdout is a terminal. We also print to stdout, so that
works well.
But.... for some stupid reason that I absolutely refuse to even attempt
to debug, stdout is *not* a terminal when executing tests *in a
terminal*.
But stderr is >:).
So this just checks whether stderr is a terminal.
If you have a use case where you dump compiletest stdout into a place
where colors are not supported while having stderr be a terminal, then
I'm sorry for you, but you are gonna get colors and you're gonna like
it. Stop it with the usual environment variable, which `colored` also
respects by default.
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When implementing support for rmake.rs, I copied over the `$TMPDIR`
directory logic from the legacy Makefile setup. In doing so, I also
compiled recipe `rmake.rs` into executables which unfortunately are
placed into `$TMPDIR` as well.
This causes a problem on Windows where:
- The `rmake.exe` executable is placed in `$TMPDIR`.
- We run the `rmake.exe` as a process.
- The process uses `rmake.exe` inside `$TMPDIR`.
- Windows prevents the .exe file from being deleted when the process
is still alive.
- The recipe test code tries to `remove_dir_all($TMPDIR)`, which fails
with access denied because `rmake.exe` is still being used.
We fix this by separating the recipe executable and the sratch
directory:
```
base_dir/
rmake.exe
scratch/
```
We construct a base directory, unique to each run-make test, under
which we place rmake.exe alongside a `scratch/` directory. This
`scratch/` directory is what is passed to rmake.rs tests as `$TMPDIR`,
so now `remove_dir_all($TMPDIR)` has a chance to succeed because
it no longer contains `rmake.exe`.
Oops. This was a fun one to try figure out.
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This avoids the need to build `rust-demangler` when running coverage tests,
since we typically need to build `coverage-dump` anyway.
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compiletest: clarify COMPILETEST_NEEDS_ALL_LLVM_COMPONENTS error
COMPILETEST_NEEDS_ALL_LLVM_COMPONENTS is a confusing name because elsewhere "needs" means "ignore when requirement not met", but here it means "fail when requirement not met".
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also improve wording for an ignore reason
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This moves a few hundred lines of coverage-specific code out of the main
module, making navigation a bit easier.
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This adds the `only-apple`/`ignore-apple` compiletest directive, and
uses that basically everywhere instead of `only-macos`/`ignore-macos`.
Some of the updates in `run-make` are a bit redundant, as they use
`ignore-cross-compile` and won't run on iOS - but using Apple in these
is still more correct, so I've made that change anyhow.
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r=Nilstrieb
Expand `for_loops_over_fallibles` lint to lint on fallibles behind references.
Extends the scope of the (warn-by-default) lint `for_loops_over_fallibles` from just `for _ in x` where `x: Option<_>/Result<_, _>` to also cover `x: &(mut) Option<_>/Result<_>`
```rs
fn main() {
// Current lints
for _ in Some(42) {}
for _ in Ok::<_, i32>(42) {}
// New lints
for _ in &Some(42) {}
for _ in &mut Some(42) {}
for _ in &Ok::<_, i32>(42) {}
for _ in &mut Ok::<_, i32>(42) {}
// Should not lint
for _ in Some(42).into_iter() {}
for _ in Some(42).iter() {}
for _ in Some(42).iter_mut() {}
for _ in Ok::<_, i32>(42).into_iter() {}
for _ in Ok::<_, i32>(42).iter() {}
for _ in Ok::<_, i32>(42).iter_mut() {}
}
```
<details><summary><code>cargo build</code> diff</summary>
```diff
diff --git a/old.out b/new.out
index 84215aa..ca195a7 100644
--- a/old.out
+++ b/new.out
`@@` -1,33 +1,93 `@@`
warning: for loop over an `Option`. This is more readably written as an `if let` statement
--> src/main.rs:3:14
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3 | for _ in Some(42) {}
| ^^^^^^^^
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= note: `#[warn(for_loops_over_fallibles)]` on by default
help: to check pattern in a loop use `while let`
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3 | while let Some(_) = Some(42) {}
| ~~~~~~~~~~~~~~~ ~~~
help: consider using `if let` to clear intent
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3 | if let Some(_) = Some(42) {}
| ~~~~~~~~~~~~ ~~~
warning: for loop over a `Result`. This is more readably written as an `if let` statement
--> src/main.rs:4:14
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4 | for _ in Ok::<_, i32>(42) {}
| ^^^^^^^^^^^^^^^^
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help: to check pattern in a loop use `while let`
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4 | while let Ok(_) = Ok::<_, i32>(42) {}
| ~~~~~~~~~~~~~ ~~~
help: consider using `if let` to clear intent
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4 | if let Ok(_) = Ok::<_, i32>(42) {}
| ~~~~~~~~~~ ~~~
-warning: `for-loops-over-fallibles` (bin "for-loops-over-fallibles") generated 2 warnings
- Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
+warning: for loop over a `&Option`. This is more readably written as an `if let` statement
+ --> src/main.rs:7:14
+ |
+7 | for _ in &Some(42) {}
+ | ^^^^^^^^^
+ |
+help: to check pattern in a loop use `while let`
+ |
+7 | while let Some(_) = &Some(42) {}
+ | ~~~~~~~~~~~~~~~ ~~~
+help: consider using `if let` to clear intent
+ |
+7 | if let Some(_) = &Some(42) {}
+ | ~~~~~~~~~~~~ ~~~
+
+warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
+ --> src/main.rs:8:14
+ |
+8 | for _ in &mut Some(42) {}
+ | ^^^^^^^^^^^^^
+ |
+help: to check pattern in a loop use `while let`
+ |
+8 | while let Some(_) = &mut Some(42) {}
+ | ~~~~~~~~~~~~~~~ ~~~
+help: consider using `if let` to clear intent
+ |
+8 | if let Some(_) = &mut Some(42) {}
+ | ~~~~~~~~~~~~ ~~~
+
+warning: for loop over a `&Result`. This is more readably written as an `if let` statement
+ --> src/main.rs:9:14
+ |
+9 | for _ in &Ok::<_, i32>(42) {}
+ | ^^^^^^^^^^^^^^^^^
+ |
+help: to check pattern in a loop use `while let`
+ |
+9 | while let Ok(_) = &Ok::<_, i32>(42) {}
+ | ~~~~~~~~~~~~~ ~~~
+help: consider using `if let` to clear intent
+ |
+9 | if let Ok(_) = &Ok::<_, i32>(42) {}
+ | ~~~~~~~~~~ ~~~
+
+warning: for loop over a `&mut Result`. This is more readably written as an `if let` statement
+ --> src/main.rs:10:14
+ |
+10 | for _ in &mut Ok::<_, i32>(42) {}
+ | ^^^^^^^^^^^^^^^^^^^^^
+ |
+help: to check pattern in a loop use `while let`
+ |
+10 | while let Ok(_) = &mut Ok::<_, i32>(42) {}
+ | ~~~~~~~~~~~~~ ~~~
+help: consider using `if let` to clear intent
+ |
+10 | if let Ok(_) = &mut Ok::<_, i32>(42) {}
+ | ~~~~~~~~~~ ~~~
+
+warning: `for-loops-over-fallibles` (bin "for-loops-over-fallibles") generated 6 warnings
+ Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.02s
```
</details>
-----
Question:
* ~~Currently, the article `an` is used for `&Option`, and `&mut Option` in the lint diagnostic, since that's what `Option` uses. Is this okay or should it be changed? (likewise, `a` is used for `&Result` and `&mut Result`)~~ The article `a` is used for `&Option`, `&mut Option`, `&Result`, `&mut Result` and (as before) `Result`. Only `Option` uses `an` (as before).
`@rustbot` label +A-lint
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If a `[revision]` name appears in a test header directive or error annotation,
but isn't declared in the `//@ revisions:` header, that is almost always a
mistake.
In cases where a revision needs to be temporarily disabled, adding it to an
`//@ unused-revision-names:` header will suppress these checks for that name.
Adding the wildcard name `*` to the unused list will suppress these checks for
the entire file.
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this directive prevents compiletest from adding any implicit and
automatic --check-cfg arguments
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Ignore LLVM ABI in dlltool tests since those targets don't use dlltool
Otherwise those two tests fail when running `./x.py test` with this target.
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Use `target_vendor = "apple"` instead of `target_os = "..."`
Use `target_vendor = "apple"` instead of `all(target_os = "macos", target_os = "ios", target_os = "tvos", target_os = "watchos", target_os = "visionos")`.
The apple targets are quite close to being identical, with iOS, tvOS, watchOS and visionOS being even closer, so using `target_vendor` when possible makes it clearer when something is actually OS-specific, or just Apple-specific.
Note that `target_vendor` will [be deprecated in the future](https://github.com/rust-lang/rust/issues/100343), but not before an alternative (like `target_family = "apple"`) is available.
While doing this, I found various inconsistencies and small mistakes in the standard library, see the commits for details. Will follow-up with an extra PR for a similar issue that need a bit more discussion. EDIT: https://github.com/rust-lang/rust/pull/124494
Since you've talked about using `target_vendor = "apple"` in the past:
r? workingjubilee
CC `@simlay,` `@thomcc`
`@rustbot` label O-macos O-ios O-tvos O-watchos O-visionos
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Port repr128-dwarf run-make test to rmake
This PR ports the repr128-dwarf run-make test to rmake, using the `gimli` crate instead of the `llvm-dwarfdump` command.
Note that this PR changes `rmake.rs` files to be compiled with the 2021 edition (previously no edition was passed to `rustc`, meaning they were compiled with the 2015 edition). This means that `panic!("{variable}")` will now work as expected in `rmake.rs` files (there's already a usage in the [wasm-symbols-not-exported test](https://github.com/rust-lang/rust/blob/aca749eefceaed0cda19a7ec5e472fce9387bc00/tests/run-make/wasm-symbols-not-exported/rmake.rs#L34) that this will fix).
Tracking issue: #121876
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