Redox Support Preview
# Important - This is only a preview of a working `sys::redox`.
Compiling the Redox default distribution with this `libstd` results in a fully functioning distribution. As such, all further changes would be cosmetic or implementing features that have not been used by the default distribution (of which there are only a small number).
I do not expect this to be merged, but would like to discuss how it may be improved and get feedback.
There are a few `unimplemented!()` - `cloexec` for example. I have documented them below. These would be resolved before desiring a merge.
There are also issues with how the Redox syscall library is called - currently I am using a re-export in `libc` but that probably would not be desired.
After the fix of #37453 in PR #37369, instead of pointing at only the
cast type, point at the full cast span when a cast needs a dereference:
```
error: casting `&{float}` as `f32` is invalid
--> ../../../src/test/ui/mismatched_types/cast-rfc0401.rs:81:30
|
81 | vec![0.0].iter().map(|s| s as f32).collect::<Vec<f32>>();
| ^^^^^^^^ cannot cast `&{float}` as `f32`
|
help: did you mean `*s`?
--> ../../../src/test/ui/mismatched_types/cast-rfc0401.rs:81:30
|
81 | vec![0.0].iter().map(|s| s as f32).collect::<Vec<f32>>();
| ^
```
instead of
```
error: casting `&{float}` as `f32` is invalid
--> ../../../src/test/ui/mismatched_types/cast-rfc0401.rs:81:35
|
81 | vec![0.0].iter().map(|s| s as f32).collect::<Vec<f32>>();
| - ^^^
| |
| |
| did you mean `*s`?
| cannot cast `&{float}` as `f32`
```
This commit adds support for sccache, a ccache-like compiler which works on MSVC
and stores results into an S3 bucket. This also switches over all Travis and
AppVeyor automation to using sccache to ensure a shared and unified cache over
time which can be shared across builders.
The support for sccache manifests as a new `--enable-sccache` option which
instructs us to configure LLVM differently to use a 'sccache' binary instead of
a 'ccache' binary. All docker images for Travis builds are updated to download
Mozilla's tooltool builds of sccache onto various containers and systems.
Additionally a new `rust-lang-ci-sccache` bucket is configured to hold all of
our ccache goodies.
This option lists all the tests and benchmarks a binary provides. By default the listing
is sent to stdout, but if --logfile is also specified, it is written there.
If filters are specified, they're applied before the output is emitted.
[LLVM 4.0] Update LLVM global variable debug info API for 4.0
This teaches Rust about an LLVM 4.0 API change for creating debug info
for global variables.
This change was made in upstream LLVM patch https://reviews.llvm.org/D20147
This is almost a 1:1 copy of how clang did it in http://reviews.llvm.org/D20415
- The discriminant must be first in all variants.
- The loop responsible for patching enum variants when the discriminant is enlarged was nonfunctional.
Document --test-args for rustbuild
There are three changes:
* Replace --filter with --test-args
* Delete `./x.py test src/test/run-pass/assert-*` example, which doesn't work
* As driveby, update Buildbot URLs to https
Fix#38275.
r? @alexcrichton
Fix travis builds
After reading some articles [1] [2] yesterday about Docker and the "init"
process I got to thinking about the problems that we've been seeing on Travis.
The basic problem is that a Linux system may need an "init" process to work
properly when processes become zombies. Docker by default doesn't handle this
and the root process typically isn't an init process, so this can occasionally
cause quite a few problems.
We've been seeing spurious errors on Travis inside containers which look like
OOM and such, but my guess is that zombie processes were being reparented to the
top-level shell. The shell didn't expect the zombies and then behaved very
strangely.
This commit fixes these problems by using Yelp's "dumb-init" program [2] as the
init process in all of our containers. This ensures that there's a valid init
ready to reap children when they're reparented, which our test suite apparently
generates a bunch of throughout the tests and such.
[1]: https://blog.phusion.nl/2015/01/20/docker-and-the-pid-1-zombie-reaping-problem/
[2]: https://engineeringblog.yelp.com/2016/01/dumb-init-an-init-for-docker.html
This teaches Rust about an LLVM 4.0 API change for creating debug info
for global variables.
This change was made in upstream LLVM patch https://reviews.llvm.org/D20147
This is almost 1:1 copy of how clang did it in http://reviews.llvm.org/D20415
libtest: add --exact to make filter matching exact
Filter matching is by substring by default. This makes it impossible
to run a single test if its name is a substring of some other test.
For example, its not possible to run just `mymod::test` with these
tests:
```
mymod::test
mymod::test1
mymod::test_module::moretests
```
You could declare by convention that no test has a name that's a
substring of another test, but that's not really practical.
This PR adds the `--exact` flag, to make filter matching exactly
match the complete name.
