Don't ICE in `might_permit_raw_init` if reference is polymorphic
Emitting optimized MIR for a polymorphic function may require computing layout of a type that isn't (yet) known. This happens in the instcombine pass, for example. Let's fail gracefully in that condition.
cc `@saethlin`
fixes#107999
Demonstrate I/O in File examples
I've noticed that some Rust novices unnecessarily reinvent `std::fs::{read,write}`, presumably because they search for equivalents of `fopen` + `fwrite`. I've added links to `std::fs::{read,write}` in the docs.
The `File` examples were only showing how to open a file, but not how to use the opened handle, unnecessarily leaving out the next step. I've added a variety of different uses of file handles to their examples in docs.
Don't suggest `#[doc(hidden)]` trait methods with matching return type
Fixes#107983, addressing the bad suggestion.
The test can probably be made more specific to this case, but I'm unsure how.
`@rustbot` label +A-diagnostics
Use `target` instead of `machine` for mir interpreter integer handling.
The naming of `machine` only makes sense from a mir interpreter internals perspective, but outside users talk about the `target` platform. As per https://github.com/rust-lang/rust/pull/108029#issuecomment-1429791015
r? `@RalfJung`
make x look for x.py if shell script does not exist
Fixes#107907
Manually tested by doing the following after changes were made:
1. `cargo install --path src/tools/x`
2. checked out old version: commit hash `775c3c0` from https://github.com/rust-lang/rust/pull/99992
3. Ran `x --help` and it works. Previously, it was giving the error `x.py not found`
Fix unintentional UB in ui tests
`@matthiaskrgr` found UB in a bunch of the ui tests. This PR fixes a batch of miscellaneous tests I didn't think needed reviewers from a particular part of the project.
Avoid accessing HIR when it can be avoided
Experiment to see if it helps some incremental cases.
Will be rebased once https://github.com/rust-lang/rust/pull/107942 gets merged.
r? `@ghost`
This WebAssembly proposal is likely to reach stage 4 soon so this starts
the support in Rust for the proposal by adding a target feature that can
be enabled via attributes for the stdarch project to bind the
intrinsics.
Rollup of 7 pull requests
Successful merges:
- #105300 (rework min_choice algorithm of member constraints)
- #107163 (Remove some superfluous type parameters from layout.rs.)
- #107173 (Suggest the correct array length on mismatch)
- #107411 (Handle discriminant in DataflowConstProp)
- #107968 (Enable `#[thread_local]` on armv6k-nintendo-3ds)
- #108032 (Un📦ing the Resolver)
- #108060 (Revert to using `RtlGenRandom` as a fallback)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
