Tweak suggestion for missing field in patterns
Account for parser recovered struct and tuple patterns to avoid invalid
suggestion.
Follow up to #81103.
Refine "remove semicolon" suggestion in trait selection
Don't suggest it if the last statement doesn't have a semicolon
Fixes#81098
See also #54771 for why this suggestion was added
Prevent query cycles in the MIR inliner
r? `@eddyb` `@wesleywiser`
cc `@rust-lang/wg-mir-opt`
The general design is that we have a new query that is run on the `validated_mir` instead of on the `optimized_mir`. That query is forced before going into the optimization pipeline, so as to not try to read from a stolen MIR.
The query should not be cached cross crate, as you should never call it for items from other crates. By its very design calls into other crates can never cause query cycles.
This is a pessimistic approach to inlining, since we strictly have more calls in the `validated_mir` than we have in `optimized_mir`, but that's not a problem imo.
Rollup of 14 pull requests
Successful merges:
- #75180 (Implement Error for &(impl Error))
- #78578 (Permit mutable references in all const contexts)
- #79174 (Make std::future a re-export of core::future)
- #79884 (Replace magic numbers with existing constants)
- #80855 (Expand assert!(expr, args..) to include $crate for hygiene on 2021.)
- #80933 (Fix sysroot option not being honored across rustc)
- #81259 (Replace version_check dependency with own version parsing code)
- #81264 (Add unstable option to control doctest run directory)
- #81279 (Small refactor in typeck)
- #81297 (Don't provide backend_optimization_level query for extern crates)
- #81302 (Fix rendering of stabilization version for trait implementors)
- #81310 (Do not mark unit variants as used when in path pattern)
- #81320 (Make bad shlex parsing a pretty error)
- #81338 (Clean up `dominators_given_rpo`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Do not mark unit variants as used when in path pattern
Record that we are processing a pattern so that code responsible for
handling path resolution can correctly decide whether to mark it as
used or not.
Closes#76788.
Replace version_check dependency with own version parsing code
This gives compiler maintainers a better degree of control
over how the version gets parsed and is a good way to ensure
that there are no changes of behaviour in the future.
Also, issue a warning if the version is invalid instead of erroring
so that we stay forwards compatible with possible future changes
of the versioning scheme.
Last, this improves the present test a little.
Fixes#79436
r? `@petrochenkov`
Expand assert!(expr, args..) to include $crate for hygiene on 2021.
This makes `assert!(expr, args..)` properly hygienic in Rust 2021.
This is part of rust-lang/rfcs#3007, see #80162.
Before edition 2021, this was a breaking change, as `std::panic` and `core::panic` are different. In edition 2021 they will be identical, making it possible to apply proper hygiene here.
Target stack-probe support configurable finely
This adds capability to configure the target's stack probe support in a
more precise manner than just on/off. In particular now we allow
choosing between always inline-asm, always call or either one of those
depending on the LLVM version.
Note that this removes the ability to turn off the generation of the
stack-probe attribute. This is valid to replace it with inline-asm for all targets because
`probe-stack="inline-asm"` will not generate any machine code on targets
that do not currently support stack probes. This makes support for stack
probes on targets that don't have any right now automatic with LLVM
upgrades in the future.
(This is valid to do based on the fact that clang unconditionally sets
this attribute when `-fstack-clash-protection` is used, AFAICT)
cc #77885
r? `@cuviper`
This gives compiler maintainers a better degree of control
over how the version gets parsed and is a good way to ensure
that there are no changes of behaviour in the future.
Also, issue a warning if the version is invalid instead of erroring
so that we stay forwards compatible with possible future changes
of the versioning scheme.
Last, this improves the present test a little.
avoid promoting division, modulo and indexing operations that could fail
For division, `x / y` will still be promoted if `y` is a non-zero integer literal; however, `1/(1+1)` will not be promoted any more.
While at it, also see if we can reject promoting floating-point arithmetic (which are [complicated](https://github.com/rust-lang/unsafe-code-guidelines/issues/237) so maybe we should not promote them).
This will need a crater run to see if there's code out there that relies on these things being promoted.
If we can land this, promoteds in `fn`/`const fn` cannot fail to evaluate any more, which should let us do some simplifications in codegen/Miri!
Cc https://github.com/rust-lang/rfcs/pull/3027
Fixes https://github.com/rust-lang/rust/issues/61821
r? `@oli-obk`
Improve diagnostics when parsing angle args
https://github.com/rust-lang/rust/pull/79266 introduced parsing of generic arguments in associated type constraints, this however resulted in possibly very confusing error messages in cases in which closing angle brackets were missing such as in `Vec<(u32, _, _) = vec![]`, which outputs an incorrectly parsed equality constraint error, as noted by `@cynecx.`
This PR tries to provide better error messages in such cases.
r? `@petrochenkov`
