This resolves#85821. See also the discussion here:
https://github.com/emscripten-core/emscripten/issues/17128
The consensus seems to be that rust_eh_personality is never invoked.
I patched __gxx_personality_v0 to log invocations and then ran
various panic tests and it was never called, so this analysis matches
what seems to happen in practice. This replaces the definition with
an abort, modeled on the structured exception handling implementation.
Add regression test for anonymous lifetimes
Fixes#84634.
Seems like this issue was already solved. I added a regression test just in case so we can close it with peace in mind.
r? `@notriddle`
Move rustfmt downloads from bootstrap.py to rustbuild
- Allow verifying CI downloads using src/stage0.json
- Change download functions not to hard-code `ci-artifacts.rust-lang.org`
- Change `format::format` to take a `Builder` so it has access to `download_component`. I think we may want to reconsider the distinction between Build and Builder at some point; I don't think it's particularly useful.
- Move rustfmt downloads out of bootstrap.py
Fixes https://github.com/rust-lang/rust/issues/95136. Helps with https://github.com/rust-lang/rust/issues/94829. This is based on https://github.com/rust-lang/rust/pull/96687 for simplicity.
Impl Traits lowering minor refactors
This are unrelated changes on my RPIT refactor that may be better to merge before opening the main PR.
r? `@cjgillot`
cc `@nikomatsakis`
Specify DWARF alignment in bits, not bytes.
In DWARF, alignment of types is specified in bits, as is made clear by the
parameter name `AlignInBits`. However, `rustc` was incorrectly passing a byte
alignment. This commit fixes that.
This was noticed in upstream LLVM when I tried to check in a test consisting of
LLVM IR generated from `rustc` and it triggered assertions [1].
[1]: https://reviews.llvm.org/D126835
it feels arbitrary to have `Ty` and `Const` directly
in that module and to not have `GenericArg` and
`GenericArgKind` there. Writing `ty::GenericArg`
can also feel clearer than importing it. Using
`ty::subst::GenericArg` however is ugly.
Use repr(C) when depending on struct layout in ptr tests
The test depends on the layout of this struct `Pair`, so it should use `repr(C)` instead of the default `repr(Rust)`.
Recover missing comma after match arm
If we're missing a comma after a match arm expression, try parsing another pattern and a following `=>`. If we find both of those, then recover by suggesting to insert a `,`.
Fixes#80112
Recover `import` instead of `use` in item
When we definitely don't have a macro invocation (i.e. when we don't have `import ::`), then it's more productive to parse `import` as if it was incorrectly mistaken for `use`.
Not sure if this needs to be a verbose suggestion, but it renders strangely when it's not verbose:
```
error: expected item, found `import`
--> /home/michael/test.rs:1:1
|
1 | import std::{io::{self, Write}, rc::Rc};
| ^^^^^^ help: items are imported using the `use` keyword: `use`
```
Happy to change it to `span_suggestion` instead of `span_suggestion_verbose` though.
Fixes#97788
Remove unwrap from get_vtable
This avoids ICE on issue #97381 I think the bug is a bit deeper though, it compiles fine when `v` is `&v` which makes me think `Deref` is causing some issue with borrowck but it's fine I guess since this thing crashes since `nightly-2020-09-17` 😅
