Magic functions for writing to stdout/stderr.
This enables I/O in no_std contexts (or, really, any Miri-specific OS-independent context). Combined with the `abort` intrinsic it should allow a reasonable test framework in no_std.
**Question for maintainers:** So, the `no_std` panic test needs work, for two reasons:
- First, its stdout includes Miri's whole message about the abort intrinsic having been used. I guess whatever panic handler you use in `std` contexts exits cleanly without triggering this message. Comparing the entire output with backtrace as golden seems fragile.
- Second, likely for the same reason, the test framework appears to expect the test to exit successfully, when in fact it exits with status 1 due to the abort. This means the test doesn't actually pass right now.
What shall I do there?
Fix the bug of next_point in source_map
There is a bug in `next_point`, the new span won't move to next position when be called in the first time.
For this reason, our current code is working like this:
1. When we really want to move to the next position, we called two times of `next_point`
2. Some code which use `next_point` actually done the same thing with `shrink_to_hi`
This fix make sure when `next_point` is called, span will move with the width at least 1, and also work correctly in the scenario of multiple bytes.
Ref: https://github.com/rust-lang/rust/pull/103140#discussion_r997710998
r? `@davidtwco`
rustdoc: remove no-op CSS `nav.sub { font-size: 1rem }`
This rule originated as a `font-size: 16px`, when body had `font-size: 13px` set in 4fd061c426.
It remained even when body's font size was bumped up to 16px, 4d5f4ff5e9, making the rule a no-op, and was carried forward when it was converted to 1rem in cc18120425.
Deny hashing ty/re/ct inference variables
cc `@cjgillot` and https://github.com/rust-lang/rust/pull/102695#issuecomment-1275706528
r? `@lcnr`
best reviewed one commit at a time, mostly because the second commit that fixes `ClosureOutlivesRequirement` is mostly noise because of losing its `<'tcx>` lifetime parameter.
Do anonymous lifetimes remapping correctly for nested rpits
Closes#103141
r? `@cjgillot` `@nikomatsakis`
This fixes a stable to stable regression that in my opinion is `P-critical` so, we probably want to backport it all the way up to stable.
This enables I/O in no_std contexts (or, really, any Miri-specific
OS-independent context). Combined with the `abort` intrinsic it should
allow a reasonable test framework in no_std.
Following up on #92964, only add default trait implementations for the
`c-unwind` family of function pointers. The previous attempt in #92964
added trait implementations for many more ABIs and ran into concerns
regarding the increase in size of the libcore rlib.
An attempt to abstract away function pointer types behind a unified
trait to reduce the duplication of trait impls is being discussed in #99531
but this change looks to be blocked on a lang MCP.
Following @RalfJung's suggestion in
https://github.com/rust-lang/rust/pull/99531#issuecomment-1233440142,
this commit is another cut at #92964 but it _only_ adds the impls for
`extern "C-unwind" fn` and `unsafe extern "C-unwind" fn`.
I am interested in landing this patch to unblock the stabilization of
the `c_unwind` feature.
RFC: https://github.com/rust-lang/rfcs/pull/2945
Tracking Issue: https://github.com/rust-lang/rust/issues/74990
Rollup of 7 pull requests
Successful merges:
- #103211 (rustdoc: remove class name `location` from sidebar sibling nav)
- #103223 (Use already checked RHS ty for LHS deref suggestions)
- #103237 (Clean up codeblock-tooltip rustdoc-gui test)
- #103239 (Allow #[unstable] impls for fn() with unstable abi.)
- #103246 (Mark `rust-analyzer` as a host-only tool)
- #103257 (rustdoc: move `setting-line` color CSS to settings.css)
- #103258 (Make miri read_dir test a little more robust)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
This rule originated as a `font-size: 16px`, when body had `font-size: 13px`
set in 4fd061c426.
It remained even when body's font size was bumped up to 16px,
4d5f4ff5e9, making the rule a no-op, and was
carried forward when it was converted to 1rem in
cc18120425.
Mark `rust-analyzer` as a host-only tool
All tools meant to be shipped with host toolchains only should be marked as `ONLY_HOSTS = true`, but rust-analyzer was marked as `ONLY_HOSTS = false` incorrectly. This meant that bootstrap attempted to build rust-analyzer for cross-compilation-only targets, causing errors because libstd is not present on some of them.
It will still be possible to cross-compile rust-analyzer by passing a different `--host` flag to `./x`, like you can cross-compile other tools.
The problem can be reproduced by running:
```
./x build src/tools/rust-analyzer --target x86_64-unknown-linux-gnu,aarch64-unknown-none
```
Use already checked RHS ty for LHS deref suggestions
There's no reason to do the `check_lhs_assignable` and RHS `check_expr_with_hint` in that order, so invert them and use the typeck results to avoid exponential blowup on error.
Fixes#103219
